10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2021

OR

☐  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _____to_____

Commission File Number	Registrant; State of Incorporation; Address; and Telephone Number	IRS Employer Identification No.
1-9513	CMS ENERGY CORPORATION	38-2726431

(A Michigan Corporation)

One Energy Plaza, Jackson, Michigan 49201

(517) 788‑0550

1-5611 CONSUMERS ENERGY COMPANY 38-0442310

(A Michigan Corporation)

One Energy Plaza, Jackson, Michigan 49201

(517) 788‑0550

Securities registered pursuant to Section 12(b) of the Act:
Title of each class	Trading Symbol(s)	Name of each exchange on which registered
CMS Energy Corporation Common Stock, $0.01 par value	CMS	New York Stock Exchange
CMS Energy Corporation 5.625% Junior Subordinated Notes due 2078	CMSA	New York Stock Exchange
CMS Energy Corporation 5.875% Junior Subordinated Notes due 2078	CMSC	New York Stock Exchange
CMS Energy Corporation 5.875% Junior Subordinated Notes due 2079	CMSD	New York Stock Exchange
CMS Energy Corporation Depositary Shares, each representing a 1/1,000th interest in a share of 4.200% Cumulative Redeemable Perpetual Preferred Stock, Series C	CMS PRC	New York Stock Exchange
Consumers Energy Company Cumulative Preferred Stock, $100 par value: $4.50 Series	CMS-PB	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
CMS Energy Corporation:	Yes	☒	No	☐	Consumers Energy Company:	Yes	☒	No	☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S‑T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).
CMS Energy Corporation:	Yes	☒	No	☐	Consumers Energy Company:	Yes	☒	No	☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non‑accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b‑2 of the Exchange Act.
CMS Energy Corporation:		Consumers Energy Company:
Large accelerated filer	☒	Large accelerated filer	☐
Non‑accelerated filer	☐	Non‑accelerated filer	☒
Accelerated filer	☐	Accelerated filer	☐
Smaller reporting company	☐	Smaller reporting company	☐
Emerging growth company	☐	Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
CMS Energy Corporation:	☐	Consumers Energy Company:	☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b‑2 of the Exchange Act).
CMS Energy Corporation:	Yes	☐	No	☒	Consumers Energy Company:	Yes	☐	No	☒

Indicate the number of shares outstanding of each of the issuer’s classes of common stock at October 11, 2021:
CMS Energy Corporation:
CMS Energy Corporation Common Stock, $0.01 par value	289,697,389
Consumers Energy Company:
Consumers Common Stock, $10 par value, privately held by CMS Energy Corporation	84,108,789

CMS Energy Corporation

Consumers Energy Company

Quarterly Reports on Form 10-Q to the Securities and Exchange Commission for the Period Ended September 30, 2021

Table of Contents

Glossary		2
Filing Format		9
Available Information		9
Forward-Looking Statements and Information		9
Part I—Financial Information		13
Item 1.	Financial Statements	13
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	90
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	90
Item 4.	Controls and Procedures	90
Part II—Other Information		91
Item 1.	Legal Proceedings	91
Item 1A.	Risk Factors	91
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	91
Item 3.	Defaults Upon Senior Securities	92
Item 4.	Mine Safety Disclosures	92
Item 5.	Other Information	92
Item 6.	Exhibits	93
Signatures		95

1

Glossary

Certain terms used in the text and financial statements are defined below.

2016 Energy Law

Michigan’s Public Acts 341 and 342 of 2016

2020 Form 10‑K

Each of CMS Energy’s and Consumers’ Annual Report on Form 10‑K for the year ended December 31, 2020

ABATE

The Association of Businesses Advocating Tariff Equity

Aviator Wind

Aviator Wind, LLC, a VIE in which Aviator Wind Equity Holdings holds a Class B membership interest

Aviator Wind Equity Holdings

Aviator Wind Equity Holdings, LLC, a VIE in which Grand River Wind, LLC, a wholly owned subsidiary of CMS Enterprises, has a 51‑percent interest

Bay Harbor

A residential/commercial real estate area located near Petoskey, Michigan, in which CMS Energy sold its interest in 2002

bcf

Billion cubic feet

CCR

Coal combustion residual

CDC

U.S. Centers for Disease Control and Prevention

CEO

Chief Executive Officer

CERCLA

The Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended

CFO

Chief Financial Officer

2

Clean Air Act

Federal Clean Air Act of 1963, as amended

Clean Energy Plan

Consumers’ long-term strategy for delivering clean, reliable, and affordable energy to its customers through the increased use of energy efficiency and customer demand management programs, additional renewable energy generation, and conservation voltage reduction

Clean Water Act

Federal Water Pollution Control Act of 1972, as amended

CMS Energy

CMS Energy Corporation and its consolidated subsidiaries, unless otherwise noted; the parent of Consumers, CMS Enterprises, and, until October 1, 2021, EnerBank; on October 1, 2021, EnerBank was merged with Regions Bank

CMS Enterprises

CMS Enterprises Company, a wholly owned subsidiary of CMS Energy

CMS ERM

CMS Energy Resource Management Company, a wholly owned subsidiary of CMS Enterprises, formerly known as CMS Marketing, Services and Trading Company

CMS Generation Michigan Power

CMS Generation Michigan Power L.L.C., a wholly owned subsidiary of HYDRA‑CO Enterprises, Inc., a wholly owned subsidiary of CMS Enterprises

CMS Land

CMS Land Company, a wholly owned subsidiary of CMS Capital, L.L.C., a wholly owned subsidiary of CMS Energy

Consumers

Consumers Energy Company and its consolidated subsidiaries, unless otherwise noted; a wholly owned subsidiary of CMS Energy

COVID‑19

Coronavirus disease 2019, a respiratory illness that was declared a pandemic in March 2020 and to which public and private agencies initially responded by instituting social-distancing and other measures designed to slow the spread of the disease

Craven

Craven County Wood Energy Limited Partnership, a VIE in which HYDRA‑CO Enterprises, Inc., a wholly owned subsidiary of CMS Enterprises, has a 50-percent interest

3

CSAPR

The Cross-State Air Pollution Rule of 2011, as amended

DB Pension Plans

Defined benefit pension plans of CMS Energy and Consumers, including certain present and former affiliates and subsidiaries

DIG

Dearborn Industrial Generation, L.L.C., a wholly owned subsidiary of Dearborn Industrial Energy, L.L.C., a wholly owned subsidiary of CMS Enterprises

Dodd-Frank Act

Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010

EGLE

The Michigan Department of Environment, Great Lakes, and Energy, formerly known as the Michigan Department of Environmental Quality

EnerBank

EnerBank USA, until October 1, 2021, a wholly owned subsidiary of CMS Capital, L.L.C., a wholly owned subsidiary of CMS Energy; on October 1, 2021, EnerBank was merged with Regions Bank

energy waste reduction

The reduction of energy consumption through energy efficiency and demand-side energy conservation, as established under the 2016 Energy Law

EPA

U.S. Environmental Protection Agency

EPS

Earnings per share

Exchange Act

Securities Exchange Act of 1934

FERC

The Federal Energy Regulatory Commission

FTR

Financial transmission right

GAAP

U.S. Generally Accepted Accounting Principles

4

GCR

Gas cost recovery

Genesee

Genesee Power Station Limited Partnership, a VIE in which HYDRA‑CO Enterprises, Inc., a wholly owned subsidiary of CMS Enterprises, has a 50-percent interest

Grayling

Grayling Generating Station Limited Partnership, a VIE in which HYDRA‑CO Enterprises, Inc., a wholly owned subsidiary of CMS Enterprises, has a 50-percent interest

IRP

Integrated resource plan

IRS

Internal Revenue Service

kWh

Kilowatt-hour, a unit of energy equal to one thousand watt-hours

LIBOR

The London Interbank Offered Rate

Ludington

Ludington pumped-storage plant, jointly owned by Consumers and DTE Electric Company, a non‑affiliated company

MATS

Mercury and Air Toxics Standards, which limit mercury, acid gases, and other toxic pollution from coal‑fueled and oil‑fueled power plants

MCV Partnership

Midland Cogeneration Venture Limited Partnership

MCV PPA

PPA between Consumers and the MCV Partnership

MD&A

Management’s Discussion and Analysis of Financial Condition and Results of Operations

METC

Michigan Electric Transmission Company, LLC, a non‑affiliated company

5

MGP

Manufactured gas plant

MIOSHA

The Michigan Occupational Safety and Health Administration

MISO

Midcontinent Independent System Operator, Inc.

mothball

To place a generating unit into a state of extended reserve shutdown in which the unit is inactive and unavailable for service for a specified period, during which the unit can be brought back into service after receiving appropriate notification and completing any necessary maintenance or other work; generation owners in MISO must request approval to mothball a unit, and MISO then evaluates the request for reliability impacts

MPSC

Michigan Public Service Commission

MW

Megawatt, a unit of power equal to one million watts

NAAQS

National Ambient Air Quality Standards

NPDES

National Pollutant Discharge Elimination System, a permit system for regulating point sources of pollution under the Clean Water Act

NREPA

Part 201 of Michigan’s Natural Resources and Environmental Protection Act of 1994, as amended

NSR

New Source Review, a construction-permitting program under the Clean Air Act

OPEB

Other Post-Employment Benefits

OPEB Plan

Postretirement health care and life insurance plans of CMS Energy and Consumers, including certain present and former affiliates and subsidiaries

6

OSHA

The Occupational Safety and Health Administration

PCB

Polychlorinated biphenyl

PHMSA

The U.S. Department of Transportation’s Pipeline and Hazardous Materials Safety Administration

PPA

Power purchase agreement

PSCR

Power supply cost recovery

PURPA

The Public Utility Regulatory Policies Act of 1978

RCRA

The Federal Resource Conservation and Recovery Act of 1976

REC

Renewable energy credit

Regions Bank

A subsidiary of Regions Financial Corporation, a non-affiliated company

ROA

Retail Open Access, which allows electric generation customers to choose alternative electric suppliers pursuant to Michigan’s Public Acts 141 and 142 of 2000, as amended

SEC

U.S. Securities and Exchange Commission

securitization

A financing method authorized by statute and approved by the MPSC which allows a utility to sell its right to receive a portion of the rate payments received from its customers for the repayment of securitization bonds issued by a special-purpose entity affiliated with such utility

TCJA

Tax Cuts and Jobs Act of 2017

7

T.E.S. Filer City

T.E.S. Filer City Station Limited Partnership, a VIE in which HYDRA‑CO Enterprises, Inc., a wholly owned subsidiary of CMS Enterprises, has a 50-percent interest

VIE

Variable interest entity

8

Filing Format

This combined Form 10-Q is separately filed by CMS Energy and Consumers. Information in this combined Form 10-Q relating to each individual registrant is filed by such registrant on its own behalf. Consumers makes no representation regarding information relating to any other companies affiliated with CMS Energy other than its own subsidiaries.

CMS Energy is the parent holding company of several subsidiaries, including Consumers and CMS Enterprises. CMS Energy was also the parent holding company of EnerBank until October 1, 2021 when EnerBank was merged with Regions Bank. None of CMS Energy, CMS Enterprises, EnerBank, nor any of CMS Energy’s other subsidiaries (other than Consumers) has any obligation in respect of Consumers’ debt securities or preferred stock and holders of such securities should not consider the financial resources or results of operations of CMS Energy, CMS Enterprises, EnerBank, nor any of CMS Energy’s other subsidiaries (other than Consumers and its own subsidiaries (in relevant circumstances)) in making a decision with respect to Consumers’ debt securities or preferred stock. Similarly, neither Consumers nor any other subsidiary of CMS Energy has any obligation in respect of securities of CMS Energy.

This report should be read in its entirety. No one section of this report deals with all aspects of the subject matter of this report. This report should be read in conjunction with the consolidated financial statements and related notes and with MD&A included in the 2020 Form 10-K.

Available Information

CMS Energy’s internet address is www.cmsenergy.com. CMS Energy routinely posts important information on its website and considers the Investor Relations section, www.cmsenergy.com/investor-relations, a channel of distribution. Information contained on CMS Energy’s website is not incorporated herein.

Forward-Looking Statements and Information

This Form 10‑Q and other CMS Energy and Consumers disclosures may contain forward-looking statements as defined by the Private Securities Litigation Reform Act of 1995. The use of “might,” “may,” “could,” “should,” “anticipates,” “believes,” “estimates,” “expects,” “intends,” “plans,” “projects,” “forecasts,” “predicts,” “assumes,” and other similar words is intended to identify forward-looking statements that involve risk and uncertainty. This discussion of potential risks and uncertainties is designed to highlight important factors that may impact CMS Energy’s and Consumers’ businesses and financial outlook. CMS Energy and Consumers have no obligation to update or revise forward-looking statements regardless of whether new information, future events, or any other factors affect the information contained in the statements. These forward-looking statements are subject to various factors that could cause CMS Energy’s and Consumers’ actual results to differ materially from the results anticipated in these statements. These factors include, but are not limited to, the following, all of which are potentially significant:

•the impact and effect of the COVID-19 pandemic, the response to the COVID-19 pandemic, and the related economic disruption on CMS Energy’s and Consumers’ workforce, operations, revenues, expenses, uncollectible accounts, energy efficiency programs, pension funding, PSCR and GCR costs, capital investment programs, cash flows, liquidity, maintenance of existing assets, and other operating expenses

9

•the impact of new regulation by the MPSC, FERC, and other applicable governmental proceedings and regulations, including any associated impact on electric or gas rates or rate structures

•potentially adverse regulatory treatment or failure to receive timely regulatory orders affecting Consumers that are or could come before the MPSC, FERC, or other governmental authorities

•changes in the performance of or regulations applicable to MISO, METC, pipelines, railroads, vessels, or other service providers that CMS Energy, Consumers, or any of their affiliates rely on to serve their customers

•the adoption of or challenges to federal or state laws or regulations or changes in applicable laws, rules, regulations, principles, or practices, or in their interpretation, such as those related to energy policy, ROA, PURPA, infrastructure integrity or security, cybersecurity, gas pipeline safety, gas pipeline capacity, energy waste reduction, the environment, regulation or deregulation, reliability, COVID-19 vaccination and testing requirements, health care reforms (including comprehensive health care reform enacted in 2010), taxes, accounting matters, climate change, air emissions, renewable energy, the Dodd-Frank Act, and other business issues that could have an impact on CMS Energy’s, Consumers’, or any of their affiliates’ businesses or financial results

•factors affecting operations, such as costs and availability of personnel, equipment, and materials; weather conditions; natural disasters; catastrophic weather-related damage; scheduled or unscheduled equipment outages; maintenance or repairs; environmental incidents; failures of equipment or materials; electric transmission and distribution or gas pipeline system constraints; interconnection requirements; political and social unrest; general strikes; the government and/or paramilitary response to political or social events; and changes in trade policies or regulations

•the ability of Consumers to execute its cost-reduction strategies

•potentially adverse regulatory or legal interpretations or decisions regarding environmental matters, or delayed regulatory treatment or permitting decisions that are or could come before EGLE, the EPA, and/or the U.S. Army Corps of Engineers, and potential environmental remediation costs associated with these interpretations or decisions, including those that may affect Consumers’ routine maintenance, repair, and replacement classification under NSR regulations

•changes in energy markets, including availability and price of electric capacity and the timing and extent of changes in commodity prices and availability and deliverability of coal, natural gas, natural gas liquids, electricity, oil, gasoline, diesel fuel, and certain related products

•the price of CMS Energy common stock, the credit ratings of CMS Energy and Consumers, capital and financial market conditions, and the effect of these market conditions on CMS Energy’s and Consumers’ interest costs and access to the capital markets, including availability of financing to CMS Energy, Consumers, or any of their affiliates

•the potential effects of the future transition from LIBOR to an alternative reference interest rate in the credit and capital markets

•the investment performance of the assets of CMS Energy’s and Consumers’ pension and benefit plans, the discount rates, mortality assumptions, and future medical costs used in calculating the plans’ obligations, and the resulting impact on future funding requirements

10

•the impact of the economy, particularly in Michigan, and potential future volatility in the financial and credit markets on CMS Energy’s, Consumers’, or any of their affiliates’ revenues, ability to collect accounts receivable from customers, or cost and availability of capital

•changes in the economic and financial viability of CMS Energy’s and Consumers’ suppliers, customers, and other counterparties and the continued ability of these third parties, including those in bankruptcy, to meet their obligations to CMS Energy and Consumers

•population changes in the geographic areas where CMS Energy and Consumers conduct business

•national, regional, and local economic, competitive, and regulatory policies, conditions, and developments

•loss of customer demand for electric generation supply to alternative electric suppliers, increased use of self-generation including distributed generation, or energy waste reduction and storage

•increased renewable energy demand due to customers seeking to meet their own sustainability goals

•the reputational or other impact on CMS Energy and Consumers of the failure to achieve ambitions related to reducing their impact on climate change

•adverse consequences of employee, director, or third-party fraud or non‑compliance with codes of conduct or with laws or regulations

•federal regulation of electric sales, including periodic re‑examination by federal regulators of CMS Energy’s and Consumers’ market-based sales authorizations

•any event, change, development, occurrence, or circumstance that could impact the 2021 IRP filing or give rise to the termination of the associated purchase agreements, including any action by a regulatory authority or other third party to prohibit, delay, impair, or deny approval for or consent to the 2021 IRP or the consummation of the proposed acquisitions

•the availability, cost, coverage, and terms of insurance, the stability of insurance providers, and the ability of Consumers to recover the costs of any insurance from customers

•the effectiveness of CMS Energy’s and Consumers’ risk management policies, procedures, and strategies, including strategies to hedge risk related to interest rates and future prices of electricity, natural gas, and other energy-related commodities

•factors affecting development of electric generation projects, gas transmission, gas and electric distribution infrastructure replacement, conversion, and expansion projects, including factors related to project site identification, construction material pricing, schedule delays, availability of qualified construction personnel, permitting, acquisition of property rights, and government approvals

•potential disruption to, interruption of, or other impacts on facilities, utility infrastructure, operations, or backup systems due to accidents, explosions, physical disasters, global pandemics, cyber incidents, civil unrest, vandalism, war, or terrorism, and the ability to obtain or maintain insurance coverage for these events

•changes or disruption in fuel supply, including but not limited to supplier bankruptcy and delivery disruptions

11

•potential costs, lost revenues, reputational harm, or other consequences resulting from misappropriation of assets or sensitive information, corruption of data, or operational disruption in connection with a cyber attack or other cyber incident

•potential disruption to, interruption or failure of, or other impacts on information technology backup or disaster recovery systems

•technological developments in energy production, storage, delivery, usage, and metering

•the ability to implement technology successfully

•the impact of CMS Energy’s and Consumers’ integrated business software system and its effects on their operations, including utility customer billing and collections

•adverse consequences resulting from any past, present, or future assertion of indemnity or warranty claims associated with assets and businesses previously owned by CMS Energy or Consumers, including claims resulting from attempts by foreign or domestic governments to assess taxes on or to impose environmental liability associated with past operations or transactions

•the outcome, cost, and other effects of any legal or administrative claims, proceedings, investigations, or settlements

•the reputational impact on CMS Energy and Consumers of operational incidents, violations of corporate policies, regulatory violations, inappropriate use of social media, and other events

•restrictions imposed by various financing arrangements and regulatory requirements on the ability of Consumers and other subsidiaries of CMS Energy to transfer funds to CMS Energy in the form of cash dividends, loans, or advances

•earnings volatility resulting from the application of fair value accounting to certain energy commodity contracts or interest rate contracts

•changes in financial or regulatory accounting principles or policies (e.g., the adoption of the hypothetical liquidation at book value method of accounting for certain non-regulated renewable energy projects)

•other matters that may be disclosed from time to time in CMS Energy’s and Consumers’ SEC filings, or in other public documents

All forward-looking statements should be considered in the context of the risk and other factors described above and as detailed from time to time in CMS Energy’s and Consumers’ SEC filings. For additional details regarding these and other uncertainties, see Part I—Item 1. Financial Statements—MD&A—Outlook and Notes to the Unaudited Consolidated Financial Statements—Note 1, Regulatory Matters and Note 2, Contingencies and Commitments; and Part II—Item 1A. Risk Factors.

12

Part I—Financial Information

Item 1.    Financial Statements

Index to Financial Statements

Management’s Discussion and Analysis of Financial Condition and Results of Operations		14
CMS Energy Consolidated Financial Statements		46
Consolidated Statements of Income (Unaudited)		46
Consolidated Statements of Comprehensive Income (Unaudited)		48
Consolidated Statements of Cash Flows (Unaudited)		50
Consolidated Balance Sheets (Unaudited)		52
Consolidated Statements of Changes in Equity (Unaudited)		54
Consumers Consolidated Financial Statements		56
Consolidated Statements of Income (Unaudited)		56
Consolidated Statements of Comprehensive Income (Unaudited)		57
Consolidated Statements of Cash Flows (Unaudited)		59
Consolidated Balance Sheets (Unaudited)		60
Consolidated Statements of Changes in Equity (Unaudited)		62
Notes to the Unaudited Consolidated Financial Statements		63
1:	Regulatory Matters	63
2:	Contingencies and Commitments	64
3:	Financings and Capitalization	69
4:	Fair Value Measurements	71
5:	Financial Instruments	74
6:	Retirement Benefits	75
7:	Income Taxes	76
8:	Earnings Per Share—CMS Energy	77
9:	Revenue	78
10:	Cash and Cash Equivalents	82
11:	Reportable Segments	83
12:	Variable Interest Entities	86
13:	Exit Activities and Discontinued Operations	88

13

CMS Energy Corporation

Consumers Energy Company

Management’s Discussion and Analysis of Financial Condition and Results of Operations

This MD&A is a combined report of CMS Energy and Consumers.

Executive Overview

CMS Energy is an energy company operating primarily in Michigan. It is the parent holding company of several subsidiaries, including Consumers, an electric and gas utility; and CMS Enterprises, primarily a domestic independent power producer and marketer. CMS Energy was also the parent holding company of EnerBank, an industrial bank located in Utah, until October 1, 2021 when EnerBank was merged with Regions Bank as described below. Consumers’ electric utility operations include the generation, purchase, distribution, and sale of electricity, and Consumers’ gas utility operations include the purchase, transmission, storage, distribution, and sale of natural gas. Consumers’ customer base consists of a mix of primarily residential, commercial, and diversified industrial customers. CMS Enterprises, through its subsidiaries and equity investments, is engaged in domestic independent power production, including the development and operation of renewable generation, and the marketing of independent power production. EnerBank provides primarily unsecured, fixed-rate installment loans throughout the U.S. to finance home improvements.

In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. CMS Energy received proceeds of approximately $1.0 billion from the transaction and expects to recognize a pre-tax gain of approximately $660 million in the fourth quarter of 2021, both of which may be impacted by customary post-closing adjustments. CMS Energy intends to use the proceeds from the merger to fund key initiatives in its core energy business related to safety, reliability, and its clean energy transformation.

CMS Energy and Consumers manage their businesses by the nature of services each provides. CMS Energy operates principally in three business segments: electric utility; gas utility; and enterprises, its non‑utility operations and investments. EnerBank is not included in the composition of CMS Energy’s reportable segments. EnerBank’s results of operations are presented as income from discontinued operations as a result of the merger described above. Consumers operates principally in two business segments: electric utility and gas utility. CMS Energy’s and Consumers’ businesses are affected primarily by:

•regulation and regulatory matters

•state and federal legislation

•economic conditions

•weather

•energy commodity prices

•interest rates

•their securities’ credit ratings

14

The Triple Bottom Line

CMS Energy’s and Consumers’ purpose is to achieve world class performance while delivering hometown service. In support of this purpose, the companies employ the “CE Way,” a lean operating model designed to improve safety, quality, cost, delivery, and employee morale.

CMS Energy and Consumers measure their progress toward the purpose by considering their impact on the “triple bottom line” of people, planet, and profit, which is underpinned by performance; this consideration takes into account not only the economic value that the companies create for customers and investors, but also their responsibility to social and environmental goals. The triple bottom line balances the interests of the companies’ employees, customers, suppliers, regulators, creditors, Michigan’s residents, the investment community, and other stakeholders, and it reflects the broader societal impacts of the companies’ activities.

Consumers’ Sustainability Report, which is available to the public, describes the company’s progress toward world class performance measured in the areas of people, planet, and profit.

People: The people element of the triple bottom line represents CMS Energy’s and Consumers’ commitment to their employees, their customers, the residents of local communities in which the companies do business, and other stakeholders.

The safety of employees, customers, and the general public is a priority of CMS Energy and Consumers. Accordingly, CMS Energy and Consumers have worked to integrate a set of safety principles into their business operations and culture. These principles include complying with applicable safety, health, and security regulations and implementing programs and processes aimed at continually improving safety and security conditions. Since 2010, Consumers’ OSHA recordable incident rate has decreased by over 53 percent.

In response to the COVID-19 pandemic, CMS Energy and Consumers have issued a response plan that is focused on the health, safety, and well-being of their co-workers, customers, and communities. CMS Energy and Consumers have aligned with safety and health guidelines from the CDC, OSHA, MIOSHA, and the Michigan Department of Health and Human Services in order to protect their employees, customers, and contractors to ensure the continued delivery of critical energy services. To align with, and in addition to, these guidelines, CMS Energy and Consumers have:

•worked with local health departments and hospital systems to facilitate and encourage employee vaccinations

•implemented policies for employees entering homes or businesses to protect them, customers, and the public

•implemented plans to safely provide access to company facilities and put into practice enhanced cleaning protocols

15

•provided paid leave to employees required to self-quarantine, offered additional paid leave to employees to alleviate child care-related burdens, and implemented other interim workforce policies to offer flexibility and reduce employee concerns

•developed programs and committed resources to assist customers, Michigan residents, and small businesses as they return to normal operations

In addition, while CMS Energy and Consumers have not yet experienced significant labor or supply chain disruption as a result of the COVID-19 pandemic, they continue to monitor and take steps to mitigate against future impacts in order to continue to provide safe and reliable service to customers.

CMS Energy and Consumers also place a high priority on customer value and on providing a hometown customer experience. Consumers’ customer-driven investment program is aimed at improving safety and increasing electric and gas reliability, which has resulted in measurable improvements in customer satisfaction.

Central to Consumers’ commitment to its customers are the initiatives it has undertaken to keep electricity and natural gas affordable, including:

•replacement of coal-fueled generation and PPAs with a cost-efficient mix of renewable energy and energy waste reduction and demand response programs

•targeted infrastructure investment to reduce maintenance costs and improve reliability and safety

•supply chain optimization

•information and control system efficiencies

•employee and retiree health care cost sharing

•workforce productivity enhancements

In addition, Consumers’ gas commodity costs declined by 60 percent over the last ten years, due not only to a decrease in market prices but also to Consumers’ improvements to its gas infrastructure and optimization of its gas purchasing and storage strategy. These gas commodity savings are passed on to customers.

Planet: The planet element of the triple bottom line represents CMS Energy’s and Consumers’ commitment to protect the environment. This commitment extends beyond compliance with various state and federal environmental, health, and safety laws and regulations. Management considers climate change and other environmental risks in the companies’ strategy development, business planning, and enterprise risk management processes.

CMS Energy and Consumers continue to focus on opportunities to protect the environment and to reduce their carbon footprint. As a result of actions already taken by CMS Energy and Consumers, the companies have:

•decreased their combined percentage of electric supply (self-generated and purchased) from coal by 21 percentage points since 2015

•reduced carbon dioxide emissions by over 35 percent since 2005

•reduced the amount of water used to generate electricity by over 30 percent since 2012

•reduced landfill waste disposal by over 1.5 million tons since 1992

•reduced methane emissions by 16 percent since 2012

Additionally, Consumers has reduced its sulfur dioxide, nitrogen oxide, particulate matter, and mercury emissions by approximately 90 percent since 2005.

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The 2016 Energy Law:

•raised the renewable energy standard to 12.5 percent in 2019 and 15 percent in 2021; Consumers met the 12.5-percent requirement in 2019 and 2020 and expects to meet the 15-percent requirement in 2021 and future years with a combination of newly generated RECs and previously generated RECs carried over from prior years

•established a goal of 35 percent combined renewable energy and energy waste reduction by 2025; Consumers achieved 25 percent combined renewable energy and energy waste reduction through 2020

•authorized incentives for demand response programs and energy efficiency programs, referring to the combined initiatives as energy waste reduction programs

•established an integrated planning process for new generation resources

Consumers’ Clean Energy Plan details its strategy to meet customers’ long-term energy needs. The Clean Energy Plan was originally outlined in Consumers’ 2018 IRP, which was approved by the MPSC in 2019. Under its Clean Energy Plan, Consumers will meet the requirements of the 2016 Energy Law using its clean and lean strategy, which focuses on increasing the generation of renewable energy, helping customers use less energy, and offering demand response programs to reduce demand during critical peak times.

In June 2021, Consumers filed its 2021 IRP with the MPSC, proposing updates to the Clean Energy Plan. Within its 2021 IRP, which is subject to MPSC approval, Consumers outlines its long-term strategy for delivering clean, reliable, resilient, and affordable energy to its customers, including plans to:

•end the use of coal-fueled generation in 2025, 15 years sooner than initially planned

•purchase existing natural gas-fueled generating units, providing an additional 2,177 MW of nameplate capacity and allowing Consumers to continue providing controllable sources of electricity to customers, and

•expand its investment in renewable energy, adding nearly 8,000 MW of solar generation by 2040

These steps are expected to enable Consumers to meet and exceed the 2016 Energy Law renewable energy requirements and fulfill increasing customer demand for renewable energy. The 2021 IRP is also expected to allow Consumers to exceed its breakthrough goal of at least 50 percent combined renewable energy and energy waste reduction by 2030.

Consumers has a goal of achieving net-zero carbon emissions from its electric business by 2040. This goal includes not only emissions from Consumers’ owned generation, but also emissions from the generation of power purchased through long-term PPAs and from the MISO energy market. Consumers expects to meet 90 percent of its customers’ needs with clean energy sources by 2040 through execution of its 2021 IRP. Carbon offset measures including, but not limited to, carbon sequestration, methane emission capture, and forest preservation and reforestation may be used to close the gap to achieving net-zero carbon emissions.

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Presented in the following illustration is Consumers’ 2020 capacity portfolio and its future capacity portfolio as projected in the 2021 IRP. This illustration includes the effects of purchased capacity and energy waste reduction and uses the nameplate capacity of renewable energy sources:

1    Does not include RECs.

In September 2020, Michigan’s Governor signed an executive order creating the Michigan Healthy Climate Plan, which outlines goals for Michigan to achieve economy-wide net-zero greenhouse gas emissions and to be carbon neutral by 2050. The executive order aims for a 28-percent reduction below 2005 levels of greenhouse gas emissions by 2025. Consumers has already surpassed the 28-percent reduction milestone for its owned electric generation and previously announced a goal of achieving net-zero carbon emissions from its electric business by 2040.

In addition to Consumers’ efforts to reduce the electric utility’s carbon footprint, it is also making efforts to reduce the gas utility’s methane footprint. In 2019, Consumers released its Methane Reduction Plan, which set a goal of net-zero methane emissions from its natural gas delivery system by 2030. Consumers plans to reduce methane emissions from its system by about 80 percent by accelerating the replacement of aging pipe, rehabilitating or retiring outdated infrastructure, and adopting new technologies and practices. The remaining emissions will be offset by purchasing and/or producing renewable natural gas.

Additionally, to advance its environmental stewardship in Michigan and to minimize the impact of future regulations, Consumers announced the following five‑year targets during 2018:

•to reduce its water use by one billion gallons

•to enhance, restore, or protect 5,000 acres of land

•to reduce the amount of waste taken to landfills by 35 percent

Consumers has met each of these targets and is evaluating new targets for the coming years.

CMS Energy and Consumers are monitoring numerous legislative, policy, and regulatory initiatives, including those to regulate greenhouse gases, and related litigation. While CMS Energy and Consumers

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cannot predict the outcome of these matters, which could have a material effect on the companies, they intend to continue to move forward with their clean and lean strategy.

Profit: The profit element of the triple bottom line represents CMS Energy’s and Consumers’ commitment to meeting their financial objectives and providing economic development opportunities and benefits in the communities in which they do business. CMS Energy’s and Consumers’ financial strength allows them to maintain solid investment-grade credit ratings and thereby reduce funding costs for the benefit of customers and investors, to preserve and create jobs, and to reinvest in the communities they serve.

For the nine months ended September 30, 2021, CMS Energy’s net income available to common stockholders was $711 million, and diluted EPS were $2.46. This compares with net income available to common stockholders of $597 million and diluted EPS of $2.09 for the nine months ended September 30, 2020. In 2021, the benefits from gas and electric rate increases and higher electric sales were offset partially by higher distribution, transmission, generation, and compression expenses and increased depreciation and property taxes, reflecting higher capital spending. A more detailed discussion of the factors affecting CMS Energy’s and Consumers’ performance can be found in the Results of Operations section that follows this Executive Overview.

Over the next five years, Consumers expects weather-normalized electric and gas deliveries to remain stable relative to 2020. This outlook reflects the effects of energy waste reduction programs offset largely by modest growth in electric and gas demand.

Performance: Impacting the Triple Bottom Line

CMS Energy and Consumers remain committed to achieving world class performance while delivering hometown service and positively impacting the triple bottom line of people, planet, and profit. During 2021, CMS Energy and Consumers:

•realized over $40 million in cost reductions by leveraging the CE Way and through other initiatives

•achieved five-year planet goals, set in 2018, to save one billion gallons of water; enhance, restore or protect 5000 acres of land in Michigan; and reduce waste sent to landfills by 35 percent

•introduced a new three-year electric vehicle pilot program designed to help fleet owners transition to electric vehicles

•expanded their renewable energy programs that assist both business and residential customers in meeting their sustainability goals

•received recognition as #1 utility company in the U.S. for America’s Best Employers for Women and America’s Best Employers for Diversity by Forbes®

CMS Energy and Consumers will continue to utilize the CE Way to enable them to achieve world class performance and positively impact the triple bottom line. Consumers’ investment plan and the regulatory environment in which it operates also drive its ability to impact the triple bottom line.

Investment Plan: Consumers expects to make capital investments of $25 billion over the next ten years. Over the next five years, Consumers expects to make significant expenditures on infrastructure upgrades and replacements and electric supply projects. While it has a large number of potential investment opportunities that would add customer value, Consumers has prioritized its spending based on the criteria of enhancing public safety, increasing reliability, maintaining affordability for its customers, and advancing its environmental stewardship. Consumers’ investment program is expected to result in annual rate-base growth of six to eight percent. This rate-base growth, together with cost-control measures, should allow Consumers to maintain affordable customer prices.

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The 2021 IRP, which is subject to approval, would add over $1 billion of capital expenditures to the $13.2 billion that Consumers already expects to make from 2021 through 2025, which are presented in the following illustration:

Of this amount, Consumers plans to spend $10.0 billion over the next five years to maintain and upgrade its gas infrastructure and electric distribution systems in order to enhance safety and reliability, improve customer satisfaction, reduce energy waste on those systems, and facilitate its clean energy transformation. The gas infrastructure projects comprise $5.3 billion to sustain deliverability, enhance pipeline integrity and safety, and reduce methane emissions. The electric distribution projects comprise $4.7 billion to strengthen circuits and substations, replace poles, and interconnect clean energy resources. Consumers also expects to spend $2.4 billion on new clean generation, which includes investments in wind, solar, and hydro electric generation resources, and $0.8 billion on other electric supply projects.

Regulation: Regulatory matters are a key aspect of Consumers’ business, particularly rate cases and regulatory proceedings before the MPSC, which permit recovery of new investments while helping to ensure that customer rates are fair and affordable. Important regulatory events and developments not already discussed are summarized below.

2021 Electric Rate Case: In March 2021, Consumers filed an application with the MPSC seeking an annual rate increase of $225 million, based on a 10.5 percent authorized return on equity for the projected twelve-month period ending December 31, 2022. The filing requests authority to recover future investments associated with distribution system reliability, solar generation, environmental compliance, and enhanced technology. In July 2021, Consumers reduced its requested annual rate increase to $201 million.

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Looking Forward

CMS Energy and Consumers will continue to consider the impact on the triple bottom line of people, planet, and profit in their daily operations as well as in their long-term strategic decisions. Consumers will continue to seek fair and timely regulatory treatment that will support its customer-driven investment plan, while pursuing cost-control measures that will allow it to maintain sustainable customer base rates. The CE Way is an important means of realizing CMS Energy’s and Consumers’ purpose of achieving world class performance while delivering hometown service.

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Results of Operations

CMS Energy Consolidated Results of Operations

In Millions, Except Per Share Amounts
	Three Months Ended									Nine Months Ended
September 30	2021			2020			Change			2021			2020			Change
Net Income Available to Common Stockholders		$	186		$	218		$	(32)		$	711		$	597		$	114
Basic Earnings Per Average Common Share		$	0.64		$	0.76		$	(0.12)		$	2.46		$	2.10		$	0.36
Diluted Earnings Per Average Common Share		$	0.64		$	0.76		$	(0.12)		$	2.46		$	2.09		$	0.37

In Millions
	Three Months Ended									Nine Months Ended
September 30	2021			2020			Change			2021			2020			Change
Electric utility		$	195		$	226		$	(31)		$	504		$	463		$	41
Gas utility		(9)			4			(13)			208			162			46
Enterprises		7			13			(6)			26			34			(8)
Corporate interest and other		(37)			(37)			—			(109)			(96)			(13)
Discontinued operations		30			12			18			82			34			48
Net Income Available to Common Stockholders		$	186		$	218		$	(32)		$	711		$	597		$	114

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Presented in the following table is a summary of after-tax changes to net income available to common stockholders for the three and nine months ended September 30, 2021 versus 2020:

In Millions
	Three Months Ended					Nine Months Ended
September 30, 2020				$	218				$	597
Reasons for the change
Consumers electric utility and gas utility
Electric sales		$	17				$	43
Gas sales		(6)					(16)
Electric rate increase		26					83
Gas rate increase		11					74
Lower income tax expense		—					28
Lower non-operating retirement benefits expenses		8					21
Absence of 2020 voluntary separation plan expenses		—					8
Higher distribution, transmission, generation, and compression expenses		(24)					(45)
Higher depreciation and amortization		(13)					(38)
Higher service restoration costs		(44)					(31)
Higher forestry costs		(7)					(20)
Higher property taxes, reflecting higher capital spending		(2)					(14)
Higher demand response expenses		(8)					(5)
Other		(2)					(1)
				$	(44)				$	87
Enterprises				(6)					(8)
Corporate interest and other				—					(13)
Discontinued operations				18					48
September 30, 2021				$	186				$	711

Consumers Electric Utility Results of Operations

Presented in the following table are the detailed changes to the electric utility’s net income available to common stockholders for the three and nine months ended September 30, 2021 versus 2020 (amounts are presented pre-tax, with the exception of income tax changes):

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In Millions
	Three Months Ended					Nine Months Ended
September 30, 2020				$	226				$	463
Reasons for the change
Electric deliveries1 and rate increases
Rate increase, including return on higher renewable capital spending		$	35				$	112
Higher revenue due primarily to favorable weather and sales mix		21					55
Higher energy waste reduction program revenues		6					14
Higher other revenues		1					3
				$	63				$	184
Maintenance and other operating expenses
Absence of 2020 voluntary separation plan expenses		—					6
Higher service restoration costs		(60)					(42)
Higher distribution, transmission, and generation expenses		(15)					(33)
Higher forestry costs		(8)					(26)
Higher energy waste reduction program costs		(6)					(14)
Higher demand response expenses		(10)					(7)
Lower (higher) maintenance and other operating expenses		2					(5)
				(97)					(121)
Depreciation and amortization
Increased plant in service, reflecting higher capital spending				(14)					(36)
General taxes
Higher property taxes, reflecting higher capital spending				(3)					(10)
Other income, net of expenses
Lower non-operating retirement benefits expenses and other		5					15
Higher other income, net of expenses		—					3
				5					18
Interest charges				3					10
Income taxes
Higher production tax credits attributable primarily to new wind generation projects		3					15
Lower (higher) electric utility pre-tax earnings		10					(14)
Absence of prior years’ research and development tax credits2		—					(7)
Lower (higher) other income taxes		(1)					2
				12					(4)
September 30, 2021				$	195				$	504

1For the three months ended September 30, deliveries to end-use customers were 10.1 billion kWh in 2021 and 2020. For the nine months ended September 30, deliveries to end-use customers were 27.5 billion kWh in 2021 and 26.9 billion kWh in 2020.

2See Note 7, Income Taxes.

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Consumers Gas Utility Results of Operations

Presented in the following table are the detailed changes to the gas utility’s net income available to common stockholders for the three and nine months ended September 30, 2021 versus 2020 (amounts are presented pre-tax, with the exception of income tax changes):

In Millions
	Three Months Ended					Nine Months Ended
September 30, 2020				$	4				$	162
Reasons for the change
Gas deliveries1 and rate increases
Rate increase		$	14				$	99
Higher (lower) energy waste reduction program revenues		(2)					15
Lower revenue due to unfavorable weather		(5)					(12)
Higher (lower) other revenues		3					(1)
				$	10				$	101
Maintenance and other operating expenses
Absence of 2020 voluntary separation plan expenses		—					4
Higher distribution, transmission, and compression expenses		(17)					(27)
Lower (higher) energy waste reduction program costs		2					(15)
Higher maintenance and other operating expenses		(12)					(16)
				(27)					(54)
Depreciation and amortization
Increased plant in service, reflecting higher capital spending				(3)					(15)
General taxes
Higher property taxes, reflecting higher capital spending				(1)					(10)
Other income, net of expenses
Lower non-operating retirement benefits expenses and other				5					16
Interest charges				1					—
Income taxes
Lower (higher) income tax expense due primarily to acceleration of tax benefits associated with cost of removal2		(1)					10
Lower (higher) income tax expense due primarily to accelerated amortization of excess deferred income taxes2		(1)					9
Lower (higher) gas utility pre-tax earnings		5					(9)
Absence of prior years’ research and development tax credits2		—					(1)
Higher other income taxes		(1)					(1)
				2					8
September 30, 2021				$	(9)				$	208

1For the three months ended September 30, deliveries to end-use customers were 26 bcf in 2021 and 27 bcf in 2020. For the nine months ended September 30, deliveries to end-use customers were 195 bcf in 2021 and 194 bcf in 2020.

2See Note 7, Income Taxes.

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Enterprises Results of Operations

Presented in the following table are the detailed after-tax changes to the enterprises segment’s net income available to common stockholders for the three and nine months ended September 30, 2021 versus 2020:

In Millions
	Three Months Ended			Nine Months Ended
September 30, 2020		$	13		$	34
Reason for the change
Lower earnings due primarily to timing of tax benefits		$	(6)		$	(4)
Absence of refund for alternative minimum tax credit sequestration1		—			(4)
September 30, 2021		$	7		$	26

1See Note 7, Income Taxes.

Corporate Interest and Other Results of Operations

Presented in the following table are the detailed after-tax changes to corporate interest and other results for the three and nine months ended September 30, 2021 versus 2020:

In Millions
	Three Months Ended			Nine Months Ended
September 30, 2020		$	(37)		$	(96)
Reasons for the change
Lower (higher) fixed charges		$	1		$	(5)
Absence of refund for alternative minimum tax credit sequestration1		—			(5)
Preferred stock dividends		(3)			(3)
Other		2			—
September 30, 2021		$	(37)		$	(109)

1See Note 7, Income Taxes.

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Results of Discontinued Operations

In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. As a result, EnerBank’s results of operations are presented as income from discontinued operations on CMS Energy’s consolidated statements of income for the three and nine months ended September 30, 2021 and 2020. For additional details, see Notes to the Unaudited Consolidated Financial Statements—Note 13, Exit Activities and Discontinued Operations.

Presented in the following table are the detailed after-tax changes to discontinued operations for the three and nine months ended September 30, 2021 versus 2020:

In Millions
	Three Months Ended			Nine Months Ended
September 30, 2020		$	12		$	34
Reason for the change
Higher earnings at discontinued operations		$	20		$	54
Higher transaction costs		(2)			(6)
September 30, 2021		$	30		$	82

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Cash Position, Investing, and Financing

At September 30, 2021, CMS Energy had $236 million of consolidated cash and cash equivalents, which included $30 million of restricted cash and cash equivalents and $104 million of cash and cash equivalents related to discontinued operations and classified as current assets held for sale. At September 30, 2021, Consumers had $55 million of consolidated cash and cash equivalents, which included $26 million of restricted cash and cash equivalents.

Operating Activities

Presented in the following table are specific components of net cash provided by operating activities for the nine months ended September 30, 2021 versus 2020:

In Millions
CMS Energy, including Consumers
Nine Months Ended September 30, 2020	$	1,144
Reasons for the change
Higher net income	$	106
Non‑cash transactions1	(10)
Lower pension contributions	531
Lower cash provided by discontinued operations2	(146)
Unfavorable impact of changes in core working capital,3 due primarily to gas purchased at higher prices and the timing of collections on higher electric deliveries in 2021	(189)
Favorable impact of changes in other assets and liabilities, due primarily to the absence of a payment to settle litigation, offset partially by higher payments on property taxes and environmental remediation activities	47
Nine Months Ended September 30, 2021	$	1,483
Consumers
Nine Months Ended September 30, 2020	$	1,085
Reasons for the change
Higher net income	$	87
Non‑cash transactions1	—
Lower pension contributions	518
Unfavorable impact of changes in core working capital,3 due primarily to gas purchased at higher prices and the timing of collections on higher electric deliveries in 2021	(174)
Favorable impact of changes in other assets and liabilities, due primarily to lower income tax payments to CMS Energy, offset partially by higher payments on property taxes and environmental remediation activities	67
Nine Months Ended September 30, 2021	$	1,583

1Non‑cash transactions comprise depreciation and amortization, changes in deferred income taxes and investment tax credits, and other non‑cash operating activities and reconciling adjustments.

2For information regarding the merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations.

3Core working capital comprises accounts receivable, accrued revenue, inventories, accounts payable, and accrued rate refunds.

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Investing Activities

Presented in the following table are specific components of net cash used in investing activities for the nine months ended September 30, 2021 versus 2020:

In Millions
CMS Energy, including Consumers
Nine Months Ended September 30, 2020	$	(2,298)
Reasons for the change
Lower capital expenditures	$	251
Higher cash provided by discontinued operations1	583
Other investing activities	4
Nine Months Ended September 30, 2021	$	(1,460)
Consumers
Nine Months Ended September 30, 2020	$	(1,700)
Reasons for the change
Lower capital expenditures	$	162
Other investing activities, primarily lower costs to retire property	19
Nine Months Ended September 30, 2021	$	(1,519)

1For information regarding the merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations.

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Financing Activities

Presented in the following table are specific components of net cash provided by (used in) financing activities for the nine months ended September 30, 2021 versus 2020:

In Millions
CMS Energy, including Consumers
Nine Months Ended September 30, 2020	$	1,555
Reasons for the change
Lower debt issuances	$	(2,053)
Lower debt retirements	1,276
Lower repayments under Consumers’ commercial paper program	90
Lower issuances of common stock	(84)
Issuance of preferred stock in 2021	224
Higher payments of dividends on common stock	(29)
Absence of 2020 proceeds from the sale of membership interest in VIE to tax equity investor	(417)
Lower contributions from noncontrolling interest	(30)
Lower cash provided by discontinued operations1	(540)
Other financing activities, primarily the absence of debt prepayment costs in 2020 and lower debt issuance costs	36
Nine Months Ended September 30, 2021	$	28
Consumers
Nine Months Ended September 30, 2020	$	810
Reasons for the change
Lower debt issuances	$	(1,228)
Lower debt retirements	760
Lower repayments under Consumers’ commercial paper program	90
Higher repayments of borrowings from CMS Energy	(307)
Lower stockholder contribution from CMS Energy	(75)
Higher payments of dividends on common stock	(121)
Other financing activities, primarily the absence of debt prepayment costs in 2020 and lower debt issuance costs	27
Nine Months Ended September 30, 2021	$	(44)

1For information regarding the merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations.

Capital Resources and Liquidity

CMS Energy and Consumers expect to have sufficient liquidity to fund their present and future commitments. CMS Energy uses dividends and tax-sharing payments from its subsidiaries and external financing and capital transactions to invest in its utility and non‑utility businesses, retire debt, pay dividends, and fund its other obligations. The ability of CMS Energy’s subsidiaries, including Consumers, to pay dividends to CMS Energy depends upon each subsidiary’s revenues, earnings, cash needs, and other factors. In addition, Consumers’ ability to pay dividends is restricted by certain terms included in its articles of incorporation and potentially by FERC requirements and provisions under the Federal Power Act and the Natural Gas Act. For additional details on Consumers’ dividend restrictions, see Notes to the

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Unaudited Consolidated Financial Statements—Note 3, Financings and Capitalization—Dividend Restrictions. During the nine months ended September 30, 2021, Consumers paid $570 million in dividends on its common stock to CMS Energy.

Consumers uses cash flows generated from operations and external financing transactions, as well as stockholder contributions from CMS Energy, to fund capital expenditures, retire debt, pay dividends, and fund its other obligations. Consumers also uses these sources of funding to contribute to its employee benefit plans.

CMS Energy and Consumers rely on the capital markets to fund their robust capital plan. Barring any sustained market dislocations or disruptions, CMS Energy and Consumers expect to continue to have ready access to the financial and capital markets and will continue to explore possibilities to take advantage of market opportunities as they arise with respect to future funding needs. If access to these markets were to diminish or otherwise become restricted, CMS Energy and Consumers would implement contingency plans to address debt maturities, which could include reduced capital spending.

In 2020, CMS Energy entered into an equity offering program under which it may sell shares of its common stock having an aggregate sales price of up to $500 million in privately negotiated transactions, in “at the market” offerings, through forward sales transactions, or otherwise.

CMS Energy has entered into forward sales transactions under this program, which allow CMS Energy to either physically settle the contracts by issuing shares of its common stock at the then-applicable forward sale price specified by the agreement or net settle the contracts through the delivery or receipt of cash or shares. CMS Energy may settle the contracts at any time through their maturity dates, and presently intends to physically settle the contracts by delivering shares of its common stock.

For more information on these forward sale contracts, see Notes to the Unaudited Consolidated Financial Statements—Note 3, Financings and Capitalization—Issuance of Common Stock.

On July 1, 2021, CMS Energy issued 9.2 million depositary shares, each representing 1/1,000th share of its Series C preferred stock, and received net proceeds of $224 million. For more information on this issuance of preferred stock, see Notes to the Unaudited Consolidated Financial Statements—Note 3, Financings and Capitalization—Issuance of Preferred Stock.

At September 30, 2021, CMS Energy had $532 million of its revolving credit facility available and Consumers had $1.1 billion available under its revolving credit facilities. CMS Energy and Consumers use these credit facilities for general working capital purposes and to issue letters of credit. An additional source of liquidity is Consumers’ commercial paper program, which allows Consumers to issue, in one or more placements, up to $500 million in the aggregate in commercial paper notes with maturities of up to 365 days at market interest rates. These issuances are supported by Consumers’ revolving credit facilities. While the amount of outstanding commercial paper does not reduce the available capacity of the revolving credit facilities, Consumers does not intend to issue commercial paper in an amount exceeding the available capacity of the facilities. At September 30, 2021, there were no commercial paper notes outstanding under this program. For additional details on CMS Energy’s and Consumers’ revolving credit facilities and commercial paper program, see Notes to the Unaudited Consolidated Financial Statements—Note 3, Financings and Capitalization.

In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. CMS Energy received proceeds of approximately $1.0 billion from the transaction and expects to recognize a pre-tax gain of approximately $660 million in the fourth quarter of 2021, both of which may be impacted by customary post-closing adjustments. CMS Energy intends to use the proceeds from the merger to fund key initiatives in its core energy business related to

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safety, reliability, and its clean energy transformation. For information regarding EnerBank, see Notes to the Unaudited Consolidated Financial Statements—Note 13, Exit Activities and Discontinued Operations.

Certain of CMS Energy’s and Consumers’ credit agreements contain covenants that require CMS Energy and Consumers to maintain certain financial ratios, as defined therein. At September 30, 2021, no default had occurred with respect to any financial covenants contained in CMS Energy’s and Consumers’ credit agreements. CMS Energy and Consumers were each in compliance with these covenants as of September 30, 2021, as presented in the following table:

	Limit	Actual
CMS Energy, parent only
Debt to Capital1	< 0.70 to 1.0	0.56 to 1.0
Consumers
Debt to Capital2	< 0.65 to 1.0	0.47 to 1.0

1Applies to CMS Energy’s revolving credit agreement, letter of credit reimbursement agreement, and term loan credit agreement. The debt to capital ratio, as defined by these credit agreements, excludes debt of EnerBank.

2Applies to Consumers’ revolving credit agreements and letter of credit agreement.

Components of CMS Energy’s and Consumers’ cash management plan include controlling operating expenses and capital expenditures and evaluating market conditions for financing and refinancing opportunities. CMS Energy’s and Consumers’ present level of cash and expected cash flows from operating activities, together with access to sources of liquidity, are anticipated to be sufficient to fund the companies’ contractual obligations for 2021 and beyond.

Off-Balance-Sheet Arrangements

CMS Energy, Consumers, and certain of their subsidiaries enter into various arrangements in the normal course of business to facilitate commercial transactions with third parties. These arrangements include indemnities, surety bonds, letters of credit, and financial and performance guarantees. Additionally, CMS Energy has entered into forward sales contracts to sell its common stock in order to invest in its utility and non-utility businesses; as of September 30, 2021, these contracts have an aggregate sales price of $57 million, maturing through 2022. For additional details on the companies’ indemnity and guarantee arrangements, see Notes to the Unaudited Consolidated Financial Statements—Note 2, Contingencies and Commitments—Guarantees. For additional details on letters of credit and CMS Energy’s forward sales contracts, see Notes to the Unaudited Consolidated Financial Statements—Note 3, Financings and Capitalization.

Outlook

Several business trends and uncertainties may affect CMS Energy’s and Consumers’ financial condition and results of operations. These trends and uncertainties could have a material impact on CMS Energy’s and Consumers’ consolidated income, cash flows, or financial position. For additional details regarding these and other uncertainties, see Forward-Looking Statements and Information; Notes to the Unaudited Consolidated Financial Statements—Note 1, Regulatory Matters and Note 2, Contingencies and Commitments; and Part II—Item 1A. Risk Factors.

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Consumers Electric Utility Outlook and Uncertainties

Clean Energy Plan: Consumers’ Clean Energy Plan details its strategy to meet customers’ long-term energy needs. The Clean Energy Plan was originally outlined in Consumers’ 2018 IRP, which was approved by the MPSC in 2019. In June 2021, Consumers filed its 2021 IRP with the MPSC, proposing updates to the Clean Energy Plan. Under its 2021 IRP, Consumers proposes to eliminate the use of coal-fueled generation in 2025 and expects to meet 90 percent of its customers’ needs with clean energy sources by 2040.

Specifically, the 2021 IRP provides for a full transition away from coal-fueled generation by the end of 2025 and includes:

•the retirement of the D.E. Karn oil/gas-fueled and coal-fueled generating units, totaling 1,734 MW of nameplate capacity, in 2023

•the retirement of the J.H. Campbell coal-fueled generating units, totaling 1,407 MW of nameplate capacity, in 2025

The MPSC has authorized Consumers to issue securitization bonds to finance the recovery of and return on the D.E. Karn coal-fueled generating units. In the 2021 IRP, Consumers has requested regulatory asset treatment to recover the remaining book value of and return on the other D.E. Karn units and the J.H. Campbell coal-fueled generating units.

To bridge the transition away from coal generation, the 2021 IRP proposes:

•the purchase of the New Covert Generating Facility, a natural gas-fueled generating unit with 1,176 MW of nameplate capacity in Van Buren County, Michigan, in 2023

•the purchase, in 2025, of the enterprises segment’s three natural gas-fueled generating units, totaling 1,001 MW of nameplate capacity:

◦the 770-MW DIG plant located in Dearborn, Michigan

◦a 156-MW peaking generating unit located in Gaylord, Michigan

◦a 75-MW peaking generating unit located in Comstock, Michigan

These investments will allow Consumers to continue providing controllable sources of electricity to customers while expanding its investment in renewable energy. The 2021 IRP forecasts renewable energy capacity levels of 35 percent in 2025, 47 percent in 2030, and 63 percent in 2040, including the addition of nearly 8,000 MW of solar generation. Under its 2021 IRP, Consumers will continue to bid new capacity competitively. The updated plan proposes that Consumers will own and operate at least 50 percent of new capacity, with the remainder being built and owned by third parties.

Consumers’ Clean Energy Plan provides the foundation for its goal to achieve net-zero carbon emissions from its electric business by 2040. Under this net-zero goal, Consumers plans to eliminate the impact of carbon emissions created by the electricity it generates or purchases for customers.

Through its Clean Energy Plan, Consumers continues to make progress on expanding its customer programs, namely its demand response, energy efficiency, and conservation voltage reduction programs, as well as increasing its renewable energy and pumped storage generation.

In support of its Clean Energy Plan, Consumers issued requests for proposals in 2019 and 2020, each to acquire up to 300 MW of new capacity from projects to be operational in Michigan’s Lower Peninsula by May 2023. Specifically, Consumers solicited offers to enter into PPAs with or purchase solar generation projects ranging in size from 20 MW to 150 MW and to enter into PPAs with PURPA qualifying facilities

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up to 20 MW. Any contracts entered into as a result of the requests for proposals would be subject to MPSC approval.

As a result of the requests for proposals, Consumers has entered into PPAs to purchase renewable capacity, energy, and RECs from solar generating facilities and build transfer agreements to purchase solar generating facilities, as presented in the following table:

Type of Agreement	Capacity (MW)	Location of Facility	Expected Commercial Operation1	Date of Agreement	Date of MPSC Approval
2019 request
PPA (25 years)	140	Calhoun County, Michigan	2022	December 2020	April 2021
Build transfer agreement	150	Southeastern Michigan	2022	January 2021	April 2021
2020 request
PPA (20 years)	30	Manistee, Michigan	2022	May 2021	September 2021
PPA (25 years)2	100	Calhoun County, Michigan	2023	October 2021	Pending
PPA (20 years)2	125	Jackson County, Michigan	2023	October 2021	Pending
Build transfer agreement	150	Southeastern Michigan	2023	October 2021	Pending

1    For build transfer agreements, represents the date Consumers expects to take full ownership and begin commercial operation.

2    This agreement provides Consumers the option to purchase the associated solar generating facility after ten years.

Renewable Energy Plan: The 2016 Energy Law raised the renewable energy standard to 15 percent in 2021. Consumers is required to submit RECs, which represent proof that the associated electricity was generated from a renewable energy resource, in an amount equal to at least the required percentage of Consumers’ electric sales volume each year. Under its renewable energy plan, Consumers expects to meet the 15-percent requirement in 2021 and future years with a combination of newly generated RECs and previously generated RECs carried over from prior years.

Under Consumers’ renewable energy plan, the MPSC has approved the acquisition of up to 525 MW of new wind generation projects and authorized Consumers to earn a 10.7 percent return on equity on any projects approved by the MPSC. Specifically, the MPSC has approved the following:

•purchase and construction of a 150-MW wind generation project in Gratiot County, Michigan; the project became operational in December 2020

•purchase of a 166-MW wind generation project in Hillsdale, Michigan; the project became operational and Consumers took full ownership in February 2021

•purchase of a wind generation project under development, with capacity of up to 201 MW, in Gratiot County, Michigan; Consumers expects to take full ownership and begin commercial operation of the project in 2022

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The MPSC also approved the execution of a 20-year PPA under which Consumers will purchase 100 MW of renewable capacity, energy, and RECs from a 149-MW solar generating facility to be constructed in Calhoun County, Michigan; the facility is expected to be operational in 2022.

Voluntary Large Customer Renewable Energy Program: Consumers provides service under a program that provides large full-service electric customers with the opportunity to advance the development of renewable energy beyond the requirements of the 2016 Energy Law. In September 2021, the MPSC approved Consumers’ request to amend its renewable energy plan to remove the annual subscription limit associated with this program. The MPSC also approved up to 1,000 MW of new wind and solar generation projects between 2024 and 2027 to meet customer demand for the program. Consumers will competitively solicit for additional renewable energy assets based on customer applications and will construct the assets based on customer subscriptions to the program.

Electric Customer Deliveries and Revenue: Consumers’ electric customer deliveries are seasonal and largely dependent on Michigan’s economy. The consumption of electric energy typically increases in the summer months, due primarily to the use of air conditioners and other cooling equipment. In addition, Consumers’ electric rates, which follow a seasonal rate design, are higher in the summer months than in the remaining months of the year. In June 2021, electric residential customers transitioned to a summer peak time-of-use rate that allows them to take advantage of lower-cost energy during off-peak times during the summer months. Thus, customers can reduce their electric bills by shifting their consumption from on‑peak to off‑peak times.

In response to the COVID‑19 pandemic, Michigan’s Governor and the Michigan Department of Health and Human Services have issued numerous orders throughout 2020 and 2021 restricting business, educational, and personal activities at varying levels. In June 2021, almost all restrictions were lifted and Consumers expects businesses and residents to continue resuming normal activities and for weather-normalized electric deliveries to stabilize.

Over the next five years, Consumers expects weather-normalized electric deliveries to remain stable relative to 2020. This outlook reflects the effects of energy waste reduction programs offset largely by modest growth in electric demand. Actual delivery levels will depend on:

•energy conservation measures and results of energy waste reduction programs

•weather fluctuations

•Michigan’s economic conditions, including utilization, expansion, or contraction of manufacturing facilities, population trends, and housing activity

Electric ROA: Michigan law allows electric customers in Consumers’ service territory to buy electric generation service from alternative electric suppliers in an aggregate amount capped at ten percent of Consumers’ sales, with certain exceptions. At September 30, 2021, electric deliveries under the ROA program were at the ten‑percent limit. Of Consumers’ 1.9 million electric customers, fewer than 300, or 0.02 percent, purchased electric generation service under the ROA program.

The 2016 Energy Law established a path to ensure that forward capacity is secured for all electric customers in Michigan, including customers served by alternative electric suppliers under ROA. The law also authorized the MPSC to ensure that alternative electric suppliers have procured enough capacity to cover their anticipated capacity requirements for the four-year forward period. In 2017, the MPSC issued an order establishing a state reliability mechanism for Consumers. Under this mechanism, if an alternative electric supplier does not demonstrate that it has procured its capacity requirements for the four-year forward period, its customers will pay a set charge to the utility for capacity that is not provided by the alternative electric supplier. All alternative electric suppliers have demonstrated that they have procured their capacity requirements through the MISO planning year beginning June 1, 2024.

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During 2017, the MPSC issued orders finding that it has statutory authority to determine and implement a local clearing requirement, which requires all electric suppliers to demonstrate that a portion of the capacity procured to serve customers during peak demand times is located in the MISO footprint in Michigan’s Lower Peninsula. In April 2020, the Michigan Supreme Court affirmed the MPSC’s statutory authority to implement a local clearing requirement on individual electric providers.

In September 2020, ABATE and another intervenor filed a complaint against the MPSC in the U.S. District Court for the Eastern District of Michigan challenging the constitutionality of a local clearing requirement. The complaint requests the federal court to issue a permanent injunction prohibiting the MPSC from implementing a local clearing requirement on individual electric providers. In December 2020, Consumers filed a motion to intervene and defend the local clearing requirement in that federal litigation; this motion was granted in January 2021 and this case remains pending.

Electric Rate Matters: Rate matters are critical to Consumers’ electric utility business. For additional details on rate matters, see Notes to the Unaudited Consolidated Financial Statements—Note 1, Regulatory Matters and Note 2, Contingencies and Commitments.

2021 Electric Rate Case: In March 2021, Consumers filed an application with the MPSC seeking an annual rate increase of $225 million, based on a 10.5 percent authorized return on equity for the projected twelve-month period ending December 31, 2022. The filing requests authority to recover future investments associated with distribution system reliability, solar generation, environmental compliance, and enhanced technology. In July 2021, Consumers reduced its requested annual rate increase to $201 million. Presented in the following table are the components of the revised requested increase in revenue:

In Millions
Projected Twelve-Month Period Ending December 31	2022
Components of the requested rate increase
Investment in rate base	$	115
Operating and maintenance costs	59
Cost of capital	53
Sales and other revenue	(26)
Total	$	201

Depreciation Rate Case: In March 2021, Consumers filed a depreciation case related to its electric and common utility property. In this case, Consumers requested an increase in depreciation expense, and its recovery of that expense, of $43 million annually based on December 31, 2019 balances.

Retention Incentive Program: In 2019, Consumers announced a retention incentive program to ensure necessary staffing at the D.E. Karn generating complex through the anticipated retirement of the coal-fueled generating units. Based on the number of employees that have chosen to participate, the aggregate cost of the program through 2023 is estimated to be $35 million. In its order in Consumers’ 2020 electric rate case, the MPSC approved deferred accounting treatment for these costs. Consumers expects to recognize $8 million of retention benefit costs in 2021; this expense will be deferred as a regulatory asset. For additional details on this program, see Notes to the Unaudited Consolidated Financial Statements—Note 13, Exit Activities and Discontinued Operations. Within its 2021 IRP, Consumers proposes to retire the J.H. Campbell coal-fueled generating units. No retention incentive costs related to this retirement will be recognized unless Consumers’ 2021 IRP is approved by the MPSC.

Electric Environmental Outlook: Consumers’ operations are subject to various state and federal environmental laws and regulations. Consumers estimates that it will incur capital expenditures of

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$260 million from 2021 through 2025 to continue to comply with RCRA, the Clean Water Act, the Clean Air Act, and numerous state and federal environmental regulations. Consumers expects to recover these costs in customer rates, but cannot guarantee this result. Consumers’ primary environmental compliance focus includes, but is not limited to, the following matters.

Air Quality: Multiple air quality regulations apply, or may apply, to Consumers.

CSAPR, which initially became effective in 2015, requires Michigan and many other states to improve air quality by reducing power plant emissions that, according to EPA computer models, contribute to ground-level ozone and fine particle pollution in other downwind states. In 2016, the EPA finalized ozone season standards for CSAPR, which became effective in 2017. In October 2020, in response to a court-ordered remand due to litigation, the EPA proposed a revised CSAPR rule to reflect updated emission reductions from electric generating units in 12 states, including Michigan. The EPA finalized the rule in March 2021 and made provisions for program implementation in May 2021, with continued emission reductions through 2024. Consumers has evaluated its emission compliance strategy for existing units based on the proposed number of allowances allocated to Michigan for 2021 through 2024 and believes the impact of this rule should be minimal.

In 2012, the EPA published emission standards for electric generating units, known as MATS, based on Section 112 of the Clean Air Act. Under MATS, all of Consumers’ existing coal-fueled electric generating units were required to add additional controls for hazardous air pollutants. Consumers met the deadline for five coal-fueled units and two oil/gas-fueled units it continues to operate and retired its seven remaining coal-fueled units. In May 2020, the EPA finalized changes to the supporting analysis used to enact the MATS rule. However, in 2021 the EPA submitted a proposed rule to the U.S. Office of Management and Budget that is expected to unwind the changes made in May 2020. The 2021 proposed rule is expected to be issued soon. Consumers will continue to monitor the MATS reconsideration status and any pending litigation. Consumers does not expect any changes to the MATS rule will have a significant impact on its current MATS compliance strategy.

In 2015, the EPA lowered the NAAQS for ozone. The 2015 ozone NAAQS made it more difficult to construct or modify power plants and other emission sources in areas of the country that have not met the 2015 ozone standard. In 2018, the EPA designated certain areas of Michigan as not meeting the ozone standard. None of Consumers’ fossil-fuel-fired generating units are located in these areas. However, seven counties in southeastern Michigan and three counties in western Michigan were not in attainment with the ozone standard by an August 2021 regulatory deadline, and thus may have their non-attainment designations increased from marginal to moderate. The State of Michigan has convened industry workgroups to seek implementation and control strategy ideas for statewide compliance of the 2015 ozone standard, which will need to be in place by early 2023. Consumers will continue to stay engaged in these workgroups to assess potential impacts to its generating assets.

In August 2020, the EPA proposed to retain the 2015 NAAQS for ozone without revision, and finalized this regulatory decision in December 2020. This regulation is expected to be reconsidered under the Biden administration. Consumers does not expect that any litigation involving NAAQS for ozone or any other criteria pollutant will have a material adverse impact on its generating assets.

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Consumers’ strategy to comply with air quality regulations, including CSAPR, MATS, and NAAQS, as well as its legal obligations, involved the installation and operation of emission control equipment at some facilities and the suspension of operations at others; however, Consumers continues to evaluate these rules in conjunction with other EPA and EGLE rulemakings, litigation, executive orders, treaties, and congressional action. This evaluation could result in:

•a change in Consumers’ fuel mix

•changes in the types of generating units Consumers may purchase or build in the future

•changes in how certain units are used

•the retirement, mothballing, or repowering with an alternative fuel of some of Consumers’ generating units

•changes in Consumers’ environmental compliance costs

Greenhouse Gases: There have been numerous legislative and regulatory initiatives at the state, regional, national, and international levels that involve the potential regulation of greenhouse gases. Consumers continues to monitor and comment on these initiatives and to follow litigation involving greenhouse gases.

In 2015, the EPA finalized new rules pursuant to Section 111(b) of the Clean Air Act to limit carbon dioxide emissions from new electric generating units, as well as modified or reconstructed electric generating units. New coal-fueled units would not be able to meet this limit without installing carbon dioxide control equipment using such methods as carbon capture and sequestration.

In 2018, the EPA proposed a revised Section 111(b) regulation to replace the 2015 standard rule limiting carbon dioxide emissions from new electric generating units, citing limited availability and high costs of carbon capture and sequestration equipment as reasons to change the 2015 rule. The revised Section 111(b) regulation would require new coal-fueled generating units to meet a highly efficient steam cycle performance standard. If finalized, Consumers does not expect this proposal to change its existing environmental strategy. The EPA has not formally indicated whether they intend to finalize this rulemaking or instead pursue a new set of regulations.

In 2019, the EPA finalized the Affordable Clean Energy rule, which required individual states to evaluate coal‑fueled power plants for heat‑rate improvements that could increase overall plant efficiency. In January 2021, the D.C. Circuit Court of Appeals vacated and remanded this rule to the EPA; this decision has been appealed to the U.S. Supreme Court. Consumers cannot evaluate the potential impact of the remand until the EPA takes action and any appeals are resolved. It is anticipated that the EPA will propose a new regulation addressing greenhouse gas emissions from existing fossil-fueled electric generating units; however, Consumers cannot predict the form and extent of such potential regulation.

In 2015, a group of 195 countries, including the U.S., finalized the Paris Agreement, which governs carbon dioxide reduction measures beginning in 2020. While the U.S. had withdrawn from the Paris Agreement, it rejoined the Paris Agreement in 2021. In April 2021, the U.S. announced it is committing to a nationally determined contribution under the Paris Agreement. Nationally determined contributions are the efforts by each country to reduce national greenhouse gas emissions. The commitment made by the U.S. is to reduce greenhouse gas emissions by 50 to 52 percent from 2005 levels by 2030. In its 2021 IRP, pending MPSC approval, Consumers proposed a 60-percent reduction in its carbon emissions from 2005 levels by 2025. At this time, Consumers does not expect any adverse changes to its environmental strategy as a result of these events, as the nationally determined contribution is not binding without new Congressional legislation.

In September 2020, Michigan’s Governor signed an executive order creating the Michigan Healthy Climate Plan, which outlines goals for Michigan to achieve economy-wide net-zero greenhouse gas emissions and to be carbon neutral by 2050. The executive order aims for a 28-percent reduction below

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2005 levels of greenhouse gas emissions by 2025. Consumers has already surpassed the 28-percent reduction milestone for its owned electric generation and previously announced a goal of achieving net-zero carbon emissions from its electric business by 2040. The order directs EGLE to develop and oversee an action plan for achieving these goals. In addition, the Governor established the Council on Climate Solutions, an advisory group of key stakeholders to be appointed by the Governor that will assist EGLE in implementing the plan. These goals are aspirational in nature and any changes in law or regulation to achieve these goals would need to be approved by Michigan Legislature or the relevant regulatory agency. The MPSC has requested comments from utilities and other stakeholders on how the Governor’s goal should be incorporated into future IRP filings. Consumers does not expect any adverse changes to its environmental strategy as a result of these events.

While Consumers cannot predict the outcome of changes in U.S. policy or of other legislative or regulatory initiatives involving the potential regulation of greenhouse gases, it intends to continue to move forward with its Clean Energy Plan, its present net-zero carbon reduction goal, and its emphasis on reliable and resilient supply. Consumers will continue to monitor regulatory and legislative activity and related litigation regarding greenhouse gas emissions standards that may affect electric generating units.

Increased frequency of severe weather events, including those due to climate change, could materially impact Consumers’ facilities, energy sales, and results of operations. Consumers is unable to predict these events or their financial impact; however, Consumers evaluates the potential physical impacts of climate change on its operations, including increased temperature, increased storm activity, increased rainfall, and higher lake and river levels. Consumers is taking steps to mitigate these risks as appropriate.

Litigation, international treaties, executive orders, federal laws and regulations (including regulations by the EPA), and state laws and regulations, if enacted or ratified, could ultimately impact Consumers. Consumers may be required to replace equipment; install additional emission control equipment; purchase emission allowances or credits; curtail operations; arrange for alternative sources of supply; purchase facilities that generate fewer emissions; mothball or retire facilities that generate certain emissions; pursue energy efficiency or demand response measures more swiftly; or take other steps to manage or lower the emission of greenhouse gases. Although associated capital or operating costs relating to greenhouse gas regulation or legislation could be material and cost recovery cannot be assured, Consumers expects to recover these costs in rates consistent with the recovery of other reasonable costs of complying with environmental laws and regulations.

CCRs: In 2015, the EPA published a final rule regulating CCRs under RCRA. The final rule adopts minimum standards for beneficially reusing and disposing of non‑hazardous CCRs. The rule establishes new minimum requirements for site location, groundwater monitoring, flood protection, storm water design, fugitive dust control, and public disclosure of information, including any groundwater protection standard exceedances. The rule also sets out conditions under which some CCR units would be forced to cease receiving CCR and non‑CCR wastewater and initiate closure based on the inability to achieve minimum safety standards, meet a location standard, or meet minimum groundwater standards. The EPA amended the conditions of forced closure in a final rule in August 2020. The August 2020 rule required all unlined CCR units to initiate closure by mid-April 2021, unless conditions that satisfied an alternate closure schedule were approved by the EPA. Consumers aligned with EGLE on closure plans for each of its unlined ash ponds to ensure coordination between federal and state requirements, and completed the work necessary to close each of them prior to the April 2021 closure initiation deadline.

Due to litigation, many aspects of the 2015 CCR rule have been remanded to the EPA, which has resulted in various new rulemakings. These new rulemakings are now in litigation. Continued litigation will add uncertainty around requirements for compliance and state permit programs.

Separately, Congress passed legislation in 2016 allowing participating states to develop permitting programs for CCRs under RCRA. In 2018, the Michigan Legislature adopted a permitting program,

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which requires the EPA’s authorization. This program should reduce costly, duplicative oversight over CCRs and provide local oversight to CCR issues unique to Michigan. In April 2020, EGLE submitted a regulatory package for Michigan’s permit program to the EPA for its review. Federal rulemaking challenges may delay EPA approval of the Michigan permitting program.

Consumers has aligned with EGLE on closure plans for all of its coal ash disposal sites, including those subject to the EPA’s 2015 CCR rule, and adjusted its recorded asset retirement obligation accordingly. Consumers has historically been authorized to recover in electric rates costs related to coal ash disposal sites.

Water: Multiple water-related regulations apply, or may apply, to Consumers.

The EPA regulates cooling water intake systems of existing electric generating plants under Section 316(b) of the Clean Water Act and the corresponding rules that were revised in 2014. The rules seek to reduce alleged harmful impacts on aquatic organisms, such as fish. In 2018, Consumers submitted to EGLE for approval all required studies and recommended plans to comply with Section 316(b), but has not yet received final approval.

In 2015, the EPA released its final effluent limitation guidelines for steam electric generating plants. These guidelines, which are presently being litigated, set stringent new requirements for the discharge from electric generating units into surface waters. The EPA published a final rule in October 2020, with an effective date of December 2020, revising the 2015 guidelines related to the discharge of certain wastewater streams from electric generating units. The rule also allows for extension of the compliance deadline from the end of 2023 to the end of 2025, upon approval by EGLE through the NPDES permitting process. Consumers does not expect any adverse changes to its environmental strategy as a result of these revisions to the rule or any litigation of the guidelines.

In January 2020, the EPA and the U.S. Army Corps of Engineers finalized a rule under the Clean Water Act that repealed a 2015 definition of “Waters of the United States,” narrowed the scope of federal jurisdiction, and reduced the frequency of dual jurisdiction in states with authority to regulate the same waters; Michigan is one such state. The EPA halted the implementation of the 2020 rule and is interpreting the “Waters of the United States” consistent with a pre-2015 interpretation. In August 2021, the EPA and the U.S. Army Corps of Engineers proposed new rulemaking, seeking to once again redefine the scope of federal jurisdiction under the Clean Water Act, and other changes to the Clean Water Act regulations. The proposed August 2021 rulemaking may change how Consumers interacts with federal jurisdictional waters within Michigan, which may add additional requirements to existing compliance programs, or may require additional permitting for infrastructure projects. However, Consumers does not expect adverse changes to its environmental strategy as a result of the current interpretations. “Waters of the United States” continues to be litigated in multiple jurisdictions.

Many of Consumers’ facilities maintain NPDES permits, which are renewed every five years and are vital to the facilities’ operations. Failure of EGLE to renew any NPDES permit, a successful appeal against a permit, a change in the interpretation or scope of NPDES permitting, or onerous terms contained in a permit could have a significant detrimental effect on the operations of a facility.

Other Matters: Other electric environmental matters could have a material impact on Consumers’ outlook. For additional details on other electric environmental matters, see Notes to the Unaudited Consolidated Financial Statements—Note 2, Contingencies and Commitments—Consumers Electric Utility Contingencies—Electric Environmental Matters.

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Consumers Gas Utility Outlook and Uncertainties

Gas Deliveries: Consumers’ gas customer deliveries are seasonal. The peak demand for natural gas typically occurs in the winter due to colder temperatures and the resulting use of natural gas as heating fuel.

Over the next five years, Consumers expects weather-normalized gas deliveries to remain stable relative to 2020. This outlook reflects the effects of energy waste reduction programs offset largely by modest growth in gas demand. Actual delivery levels will depend on:

•weather fluctuations

•use by power producers

•availability and development of renewable energy sources

•gas price changes

•Michigan’s economic conditions, including population trends and housing activity

•the price or demand of competing energy sources or fuels

•energy efficiency and conservation impacts

Gas Rate Matters: Rate matters are critical to Consumers’ gas utility business. For additional details on rate matters, see Notes to the Unaudited Consolidated Financial Statements—Note 1, Regulatory Matters and Note 2, Contingencies and Commitments.

Gas Pipeline and Storage Integrity and Safety: The PHMSA has published various rules that expand federal safety standards for gas transmission pipelines and underground storage facilities. To comply with these rules, Consumers will incur increased capital and operating and maintenance costs to install and remediate pipelines and to expand inspections, maintenance, and monitoring of its existing pipelines and storage facilities. The initial requirements in the regulation took effect in July 2020, with future regulation phases to be released over numerous years.

Although associated capital or operating and maintenance costs relating to these regulations could be material and cost recovery cannot be assured, Consumers expects to recover such costs in rates consistent with the recovery of other reasonable costs of complying with laws and regulations. Consumers will continue to monitor gas safety regulations and continue implementation of the American Petroleum Institute’s Recommended Practice 1173, Pipeline Safety Management Systems. This program minimizes gas system asset- and performance-related risks by ensuring that there are policies, procedures, work instructions, forms, and records in place to streamline adoption and deployment of any existing or future regulations.

Gas Environmental Outlook: Consumers expects to incur response activity costs at a number of sites, including 23 former MGP sites. For additional details, see Notes to the Unaudited Consolidated Financial Statements—Note 2, Contingencies and Commitments—Consumers Gas Utility Contingencies—Gas Environmental Matters.

Air Quality: In 2015, the EPA lowered the NAAQS for ozone. The 2015 ozone NAAQS made it more difficult to construct or modify power plants and other emission sources in areas of the country that have not met the 2015 ozone standard. In 2018, the EPA designated certain areas of Michigan as not meeting the ozone standard. Specifically, seven counties in southeastern Michigan and three counties in western Michigan were not in attainment with the ozone standard by an August 2021 regulatory deadline, and thus may have their non-attainment designations increased from marginal to moderate. Some of Consumers’ compressor stations are located in these areas. The State of Michigan has convened industry workgroups to seek implementation and control strategy ideas for statewide compliance of the 2015 ozone standard,

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which will need to be in place by early 2023. Consumers will continue to stay engaged in these workgroups to assess potential impacts to its compressor stations.

Greenhouse Gases: Consumers is making voluntary efforts to reduce its gas utility’s methane emissions. In 2019, Consumers released its Methane Reduction Plan, which set a goal of net-zero methane emissions from its natural gas delivery system by 2030. Under its Methane Reduction Plan, Consumers plans to reduce methane emissions from its system by about 80 percent by accelerating the replacement of aging pipe, rehabilitating or retiring outdated infrastructure, and adopting new technologies and practices. The remaining emissions will be offset by purchasing and/or producing renewable natural gas.

In September 2020, Michigan’s Governor signed an executive order creating the Michigan Healthy Climate Plan, which outlines goals for Michigan to achieve economy-wide net-zero greenhouse gas emissions and to be carbon neutral by 2050. The executive order aims for a 28-percent reduction below 2005 levels of greenhouse gas emissions by 2025. These new goals could impact Consumers’ gas business over the long term. Consumers is evaluating decarbonization options for its gas business including energy efficiency, renewable natural gas, and hydrogen. For additional details on the executive order, see Consumers Electric Utility Outlook and Uncertainties—Electric Environmental Outlook.

In 2015, a group of 195 countries, including the U.S., finalized the Paris Agreement, which governs carbon dioxide reduction measures beginning in 2020. While the U.S. had withdrawn from the Paris Agreement, it rejoined the Paris Agreement in 2021. In April 2021, the U.S. announced it is committing to a nationally determined contribution under the Paris Agreement. Nationally determined contributions are the efforts by each country to reduce national greenhouse gas emissions. The commitment made by the U.S. is to reduce greenhouse gas emissions by 50 to 52 percent from 2005 levels by 2030. In its 2021 IRP, pending MPSC approval, Consumers proposed a 60-percent reduction in its carbon emissions from 2005 levels by 2025. At this time, Consumers does not expect any adverse changes to its environmental strategy as a result of these events, as the nationally determined contribution is not binding without new Congressional legislation.

There is increasing interest at the federal, state, and local levels involving potential regulation of greenhouse gases or its sources. Such regulation, if adopted, may involve requirements to reduce methane emissions from Consumers’ gas utility operations and carbon dioxide emissions from natural gas customer use. No such measures apply to Consumers at this time. Consumers continues to monitor these initiatives and comment as appropriate. Consumers cannot predict the impact of any potential future legislation or regulation on its gas utility.

Consumers Electric Utility and Gas Utility Outlook and Uncertainties

Energy Waste Reduction Plan: The 2016 Energy Law authorized incentives for demand response programs and energy efficiency programs, referring to the combined initiatives as energy waste reduction programs. The law also set a requirement to achieve annual reductions of 1.0 percent in customers’ electricity use through 2021 and 0.75 percent in customers’ natural gas use indefinitely and established a goal of 35 percent combined renewable energy and energy waste reduction by 2025. Consumers achieved 25 percent combined renewable energy and energy waste reduction through 2020.

Additionally, the MPSC has approved the recovery of demand response costs and an associated financial incentive based on demand response target performance.

Under its energy waste reduction plan, Consumers provides its customers with incentives to reduce usage by offering energy audits; rebates and discounts on purchases of highly efficient appliances; and other incentives and programs.

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Enterprises Outlook and Uncertainties

CMS Energy’s primary focus with respect to its enterprises businesses is to maximize the value of generating assets, its share of which represents 1,480 MW of capacity, and to pursue opportunities for the development of renewable generation projects.

In June 2021, DIG, CMS Generation Michigan Power, and CMS ERM entered into an agreement with Consumers to sell, for $515 million, subject to certain adjustments, the enterprises segment’s three natural gas-fueled generating units, totaling 1,001 MW of nameplate capacity:

•the 770-MW DIG plant located in Dearborn, Michigan

•a 156-MW peaking generating unit located in Gaylord, Michigan

•a 75-MW peaking generating unit located in Comstock, Michigan

The parties plan to close the sale, which is dependent upon regulatory approvals, in 2025.

The enterprises segment’s assets may be affected by environmental laws and regulations. The 2015 ozone NAAQS made it more difficult to construct or modify power plants and other emission sources in areas of the country that have not met the 2015 ozone standard. In 2018, the EPA designated certain areas of Michigan as not meeting the ozone standard. The DIG plant is in one such area and, as a result, would be subject to additional permitting restrictions in the event of any future modifications. For additional details regarding the new ozone NAAQS, see Consumers Electric Utility Outlook and Uncertainties—Electric Environmental Outlook.

Trends, uncertainties, and other matters related to the enterprises segment that could have a material impact on CMS Energy’s consolidated income, cash flows, or financial position include:

•investment in and financial benefits received from renewable energy and energy storage projects

•changes in energy and capacity prices

•severe weather events and climate change associated with increasing levels of greenhouse gases

•changes in commodity prices and interest rates on certain derivative contracts that do not qualify for hedge accounting and must be marked to market through earnings

•changes in various environmental laws, regulations, principles, or practices, or in their interpretation

•indemnity and environmental remediation obligations at Bay Harbor, including an inability to renew an NPDES permit

•indemnity obligations assumed in connection with the purchase or ownership of an interest in one or more facilities that involve tax equity financing

•representations, warranties, and indemnities provided by CMS Energy in connection with previous sales of assets

For additional details regarding the enterprises segment’s uncertainties, see Notes to the Unaudited Consolidated Financial Statements—Note 2, Contingencies and Commitments.

Other Outlook and Uncertainties

Discontinued Operations: In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. CMS Energy received proceeds of approximately $1.0 billion from the transaction and expects to recognize a pre-tax gain of approximately $660 million in the fourth quarter of 2021, both of which may be impacted by customary post-closing adjustments. CMS Energy intends to use the proceeds from the merger to fund key initiatives in its core energy business related to safety, reliability, and its clean energy transformation. For information

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regarding EnerBank, see Notes to the Unaudited Consolidated Financial Statements—Note 13, Exit Activities and Discontinued Operations.

Litigation: CMS Energy, Consumers, and certain of their subsidiaries are named as parties in various litigation matters, as well as in administrative proceedings before various courts and governmental agencies, arising in the ordinary course of business. For additional details regarding these and other legal matters, see Notes to the Unaudited Consolidated Financial Statements—Note 1, Regulatory Matters and Note 2, Contingencies and Commitments.

New Accounting Standards

There are no new accounting standards issued but not yet effective that are expected to have a material impact on CMS Energy’s or Consumers’ consolidated financial statements.

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45

CMS Energy Corporation

Consolidated Statements of Income (Unaudited)

In Millions, Except Per Share Amounts
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Operating Revenue		$	1,725		$	1,507		$	5,296		$	4,691
Operating Expenses
Fuel for electric generation		184			108			438			274
Purchased and interchange power		462			430			1,230			1,149
Purchased power – related parties		21			13			56			45
Cost of gas sold		57			35			432			390
Maintenance and other operating expenses		410			281			1,076			885
Depreciation and amortization		250			226			832			763
General taxes		81			74			290			262
Total operating expenses		1,465			1,167			4,354			3,768
Operating Income		260			340			942			923
Other Income (Expense)
Interest income		—			1			2			3
Interest income – related parties		—			—			—			7
Allowance for equity funds used during construction		2			1			5			4
Income from equity method investees		4			—			8			1
Non-operating retirement benefits, net		40			29			121			90
Other income		1			1			7			3
Other expense		(3)			(4)			(7)			(9)
Total other income		44			28			136			99
Interest Charges
Interest on long-term debt		120			124			359			361
Interest expense – related parties		3			3			9			9
Other interest expense		3			4			8			10
Allowance for borrowed funds used during construction		(1)			(1)			(2)			(2)
Total interest charges		125			130			374			378
Income Before Income Taxes		179			238			704			644
Income Tax Expense		26			40			90			88
Income From Continuing Operations		153			198			614			556
Income From Discontinued Operations, Net of Tax of $9, $4, $25, and $10		30			12			82			34
Net Income		183			210			696			590
Loss Attributable to Noncontrolling Interests		(6)			(8)			(18)			(7)

46

In Millions, Except Per Share Amounts
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Net Income Attributable to CMS Energy		189			218			714			597
Preferred Stock Dividends		3			—			3			—
Net Income Available to Common Stockholders		$	186		$	218		$	711		$	597
Basic Earnings Per Average Common Share
Income from continuing operations per average common share available to common stockholders		$	0.54		$	0.72		$	2.18		$	1.98
Income from discontinued operations per average common share available to common stockholders		0.10			0.04			0.28			0.12
Basic earnings per average common share		$	0.64		$	0.76		$	2.46		$	2.10
Diluted Earnings Per Average Common Share
Income from continuing operations per average common share available to common stockholders		$	0.54		$	0.72		$	2.18		$	1.97
Income from discontinued operations per average common share available to common stockholders		0.10			0.04			0.28			0.12
Diluted earnings per average common share		$	0.64		$	0.76		$	2.46		$	2.09

The accompanying notes are an integral part of these statements.

47

CMS Energy Corporation

Consolidated Statements of Comprehensive Income (Unaudited)

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Net Income		$	183		$	210		$	696		$	590
Retirement Benefits Liability
Net loss arising during the period, net of tax of $—, $(2), $—, and $(2)		—			(5)			—			(5)
Settlement arising during the period, net of tax of $— for all periods		—			1			—			1
Amortization of net actuarial loss, net of tax of $—, $—, $1, and $1		1			1			5			3
Amortization of prior service credit, net of tax of $— for all periods		—			—			(1)			(1)
Derivatives
Unrealized gain (loss) on derivative instruments, net of tax of $—, $—, $—, and $(1)		—			(1)			1			(5)
Reclassification adjustments included in net income, net of tax of $—, $—, $1, and $—		—			1			—			1
Other Comprehensive Income (Loss)		1			(3)			5			(6)
Comprehensive Income		184			207			701			584
Comprehensive Loss Attributable to Noncontrolling Interests		(6)			(8)			(18)			(7)
Comprehensive Income Attributable to CMS Energy		$	190		$	215		$	719		$	591

The accompanying notes are an integral part of these statements.

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49

CMS Energy Corporation

Consolidated Statements of Cash Flows (Unaudited)

In Millions
Nine Months Ended September 30	2021			2020
Cash Flows from Operating Activities
Net income		$	696		$	590
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization		832			763
Deferred income taxes and investment tax credits		110			140
Other non‑cash operating activities and reconciling adjustments		(71)			(22)
Pension contributions		—			(531)
Net cash provided by (used in) discontinued operations		(111)			35
Changes in assets and liabilities
Accounts receivable and accrued revenue		129			221
Inventories		(185)			(34)
Accounts payable and accrued rate refunds		84			30
Other current assets and liabilities		(30)			(91)
Other non‑current assets and liabilities		29			43
Net cash provided by operating activities		1,483			1,144
Cash Flows from Investing Activities
Capital expenditures (excludes assets placed under finance lease)		(1,442)			(1,693)
Net cash provided by (used in) discontinued operations		78			(505)
Cost to retire property and other investing activities		(96)			(100)
Net cash used in investing activities		(1,460)			(2,298)
Cash Flows from Financing Activities
Proceeds from issuance of debt		300			2,353
Retirement of debt		(18)			(1,294)
Decrease in notes payable		—			(90)
Issuance of common stock, net of issuance costs		23			107
Issuance of preferred stock, net of issuance costs		224			—
Payment of dividends on common and preferred stock		(380)			(351)
Proceeds from the sale of membership interest in VIE to tax equity investor		—			417
Contribution from noncontrolling interest		1			31
Net cash provided by (used in) discontinued operations		(84)			456
Other financing costs		(38)			(74)
Net cash provided by financing activities		28			1,555
Net Increase in Cash and Cash Equivalents, Including Restricted Amounts		51			401
Cash and Cash Equivalents, Including Restricted Amounts, Beginning of Period		185			157
Cash and Cash Equivalents, Including Restricted Amounts, End of Period		$	236		$	558

50

In Millions
Nine Months Ended September 30	2021			2020
Other Non‑cash Investing and Financing Activities
Non‑cash transactions
Capital expenditures not paid		$	172		$	140

The accompanying notes are an integral part of these statements.

51

CMS Energy Corporation

Consolidated Balance Sheets (Unaudited)

ASSETS
In Millions
	September 30 2021			December 31 2020
Current Assets
Cash and cash equivalents		$	102		$	32
Restricted cash and cash equivalents		30			17
Accounts receivable and accrued revenue, less allowance of $24 in 2021 and $29 in 2020		713			853
Accounts receivable – related parties		17			19
Accrued gas revenue		5			—
Inventories at average cost
Gas in underground storage		556			353
Materials and supplies		173			155
Generating plant fuel stock		31			68
Deferred property taxes		215			332
Regulatory assets		11			42
Assets held for sale		494			429
Prepayments and other current assets		130			104
Total current assets		2,477			2,404
Plant, Property, and Equipment
Plant, property, and equipment, gross		29,450			27,870
Less accumulated depreciation and amortization		8,489			7,938
Plant, property, and equipment, net		20,961			19,932
Construction work in progress		973			1,085
Total plant, property, and equipment		21,934			21,017
Other Non‑current Assets
Regulatory assets		2,588			2,653
Accounts receivable		18			19
Investments		73			70
Assets held for sale		2,606			2,680
Other		817			823
Total other non‑current assets		6,102			6,245
Total Assets		$	30,513		$	29,666

52

LIABILITIES AND EQUITY
In Millions
	September 30 2021			December 31 2020
Current Liabilities
Current portion of long-term debt, finance leases, and other financing		$	585		$	591
Accounts payable		787			661
Accounts payable – related parties		8			7
Accrued rate refunds		9			20
Accrued interest		112			104
Accrued taxes		146			454
Regulatory liabilities		191			151
Liabilities held for sale		1,233			953
Other current liabilities		183			133
Total current liabilities		3,254			3,074
Non‑current Liabilities
Long-term debt		12,027			11,744
Non-current portion of finance leases and other financing		48			56
Regulatory liabilities		3,758			3,744
Postretirement benefits		147			152
Asset retirement obligations		599			553
Deferred investment tax credit		113			115
Deferred income taxes		2,014			1,863
Liabilities held for sale		1,523			1,894
Other non‑current liabilities		377			394
Total non‑current liabilities		20,606			20,515
Commitments and Contingencies (Notes 1, 2, and 3)
Equity
Common stockholders’ equity
Common stock, authorized 350.0 shares; outstanding 289.7 shares in 2021 and 288.9 shares in 2020		3			3
Other paid-in capital		5,397			5,365
Accumulated other comprehensive loss		(81)			(86)
Retained earnings		547			214
Total common stockholders’ equity		5,866			5,496
Cumulative preferred stock, Series C, authorized 9.2 depositary shares in 2021; outstanding 9.2 depositary shares in 2021		224			—
Total stockholders’ equity		6,090			5,496
Noncontrolling interests		563			581
Total equity		6,653			6,077
Total Liabilities and Equity		$	30,513		$	29,666

The accompanying notes are an integral part of these statements.

53

CMS Energy Corporation

Consolidated Statements of Changes in Equity (Unaudited)

In Millions, Except Per Share Amounts
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Total Equity at Beginning of Period		$	6,366		$	5,251		$	6,077		$	5,055
Common Stock
At beginning and end of period		3			3			3			3
Other Paid-in Capital
At beginning of period		5,389			5,217			5,365			5,113
Common stock issued		8			8			41			125
Common stock repurchased		—			—			(9)			(13)
At end of period		5,397			5,225			5,397			5,225
Accumulated Other Comprehensive Loss
At beginning of period		(82)			(76)			(86)			(73)
Retirement benefits liability
At beginning of period		(77)			(68)			(80)			(69)
Net loss arising during the period		—			(5)			—			(5)
Settlement arising during the period		—			1			—			1
Amortization of net actuarial loss		1			1			5			3
Amortization of prior service credit		—			—			(1)			(1)
At end of period		(76)			(71)			(76)			(71)
Derivative instruments
At beginning of period		(5)			(8)			(6)			(4)
Unrealized gain (loss) on derivative instruments		—			(1)			1			(5)
Reclassification adjustments included in net income		—			1			—			1
At end of period		(5)			(8)			(5)			(8)
At end of period		(81)			(79)			(81)			(79)
Retained Earnings
At beginning of period		487			70			214			(25)
Cumulative effect of change in accounting principle		—			—			—			(51)
Net income attributable to CMS Energy		189			218			714			597
Dividends declared on common stock		(126)			(117)			(378)			(350)
Dividends declared on preferred stock		(3)			—			(3)			—
At end of period		547			171			547			171
Cumulative Preferred Stock
At beginning of period		—			—			—			—
Preferred stock issued, net of issuance costs		224			—			224			—
At end of period		224			—			224			—

54

In Millions, Except Per Share Amounts
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Noncontrolling Interests
At beginning of period		569			37			581			37
Impact of purchase and consolidation of VIE		—			101			—			101
Sale of membership interest in VIE to tax equity investor		—			417			—			417
Contribution from noncontrolling interest		—			31			1			31
Loss attributable to noncontrolling interests		(6)			(8)			(18)			(7)
Distributions and other changes in noncontrolling interests		—			—			(1)			(1)
At end of period		563			578			563			578
Total Equity at End of Period		$	6,653		$	5,898		$	6,653		$	5,898
Dividends declared per common share		$	0.4350		$	0.4075		$	1.3050		$	1.2225
Dividends declared per preferred stock Series C depositary share		$	0.3063		$	—		$	0.3063		$	—

The accompanying notes are an integral part of these statements.

55

Consumers Energy Company

Consolidated Statements of Income (Unaudited)

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Operating Revenue		$	1,644		$	1,450		$	5,074		$	4,524
Operating Expenses
Fuel for electric generation		147			85			340			207
Purchased and interchange power		450			420			1,200			1,121
Purchased power – related parties		21			13			56			45
Cost of gas sold		53			33			425			383
Maintenance and other operating expenses		390			266			1,021			846
Depreciation and amortization		241			223			804			753
General taxes		77			72			277			256
Total operating expenses		1,379			1,112			4,123			3,611
Operating Income		265			338			951			913
Other Income (Expense)
Interest income		1			1			2			3
Interest and dividend income – related parties		1			2			4			4
Allowance for equity funds used during construction		2			1			5			4
Non-operating retirement benefits, net		37			28			113			85
Other income		1			1			7			3
Other expense		(3)			(4)			(7)			(9)
Total other income		39			29			124			90
Interest Charges
Interest on long-term debt		74			76			220			227
Interest expense – related parties		3			3			9			9
Other interest expense		2			4			6			9
Allowance for borrowed funds used during construction		(1)			(1)			(2)			(2)
Total interest charges		78			82			233			243
Income Before Income Taxes		226			285			842			760
Income Tax Expense		40			55			130			135
Net Income		186			230			712			625
Preferred Stock Dividends		—			—			1			1
Net Income Available to Common Stockholder		$	186		$	230		$	711		$	624

The accompanying notes are an integral part of these statements.

56

Consumers Energy Company

Consolidated Statements of Comprehensive Income (Unaudited)

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Net Income		$	186		$	230		$	712		$	625
Retirement Benefits Liability
Amortization of net actuarial loss, net of tax of $—, $—, $—, and $1		1			1			2			1
Other Comprehensive Income		1			1			2			1
Comprehensive Income		$	187		$	231		$	714		$	626

The accompanying notes are an integral part of these statements.

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58

Consumers Energy Company

Consolidated Statements of Cash Flows (Unaudited)

In Millions
Nine Months Ended September 30	2021			2020
Cash Flows from Operating Activities
Net income		$	712		$	625
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization		804			753
Deferred income taxes and investment tax credits		129			136
Other non‑cash operating activities and reconciling adjustments		(65)			(21)
Pension contributions		—			(518)
Changes in assets and liabilities
Accounts and notes receivable and accrued revenue		137			190
Inventories		(186)			(34)
Accounts payable and accrued rate refunds		60			29
Other current assets and liabilities		(24)			(103)
Other non-current assets and liabilities		16			28
Net cash provided by operating activities		1,583			1,085
Cash Flows from Investing Activities
Capital expenditures (excludes assets placed under finance lease)		(1,433)			(1,595)
Cost to retire property and other investing activities		(86)			(105)
Net cash used in investing activities		(1,519)			(1,700)
Cash Flows from Financing Activities
Proceeds from issuance of debt		300			1,528
Retirement of debt		(13)			(773)
Decrease in notes payable		—			(90)
Decrease in notes payable – related parties		(307)			—
Stockholder contribution		575			650
Payment of dividends on common and preferred stock		(571)			(450)
Other financing costs		(28)			(55)
Net cash provided by (used in) financing activities		(44)			810
Net Increase in Cash and Cash Equivalents, Including Restricted Amounts		20			195
Cash and Cash Equivalents, Including Restricted Amounts, Beginning of Period		35			28
Cash and Cash Equivalents, Including Restricted Amounts, End of Period		$	55		$	223
Other Non‑cash Investing and Financing Activities
Non‑cash transactions
Capital expenditures not paid		$	168		$	156

The accompanying notes are an integral part of these statements.

59

Consumers Energy Company

Consolidated Balance Sheets (Unaudited)

ASSETS
In Millions
	September 30 2021			December 31 2020
Current Assets
Cash and cash equivalents		$	29		$	20
Restricted cash and cash equivalents		26			15
Accounts receivable and accrued revenue, less allowance of $24 in 2021 and $29 in 2020		683			828
Accounts and notes receivable – related parties		8			18
Accrued gas revenue		5			—
Inventories at average cost
Gas in underground storage		556			353
Materials and supplies		168			149
Generating plant fuel stock		31			67
Deferred property taxes		215			332
Regulatory assets		11			42
Prepayments and other current assets		112			68
Total current assets		1,844			1,892
Plant, Property, and Equipment
Plant, property, and equipment, gross		28,331			26,757
Less accumulated depreciation and amortization		8,367			7,844
Plant, property, and equipment, net		19,964			18,913
Construction work in progress		930			1,058
Total plant, property, and equipment		20,894			19,971
Other Non-current Assets
Regulatory assets		2,588			2,653
Accounts receivable		24			25
Accounts and notes receivable – related parties		103			105
Other		736			753
Total other non-current assets		3,451			3,536
Total Assets		$	26,189		$	25,399

60

LIABILITIES AND EQUITY
In Millions
	September 30 2021			December 31 2020
Current Liabilities
Current portion of long-term debt, finance leases, and other financing		$	377		$	384
Notes payable – related parties		—			307
Accounts payable		745			636
Accounts payable – related parties		13			7
Accrued rate refunds		9			20
Accrued interest		80			72
Accrued taxes		158			458
Regulatory liabilities		191			151
Other current liabilities		128			104
Total current liabilities		1,701			2,139
Non-current Liabilities
Long-term debt		8,028			7,742
Non-current portion of finance leases and other financing		48			56
Regulatory liabilities		3,758			3,744
Postretirement benefits		108			112
Asset retirement obligations		576			530
Deferred investment tax credit		113			115
Deferred income taxes		2,265			2,094
Other non-current liabilities		318			311
Total non-current liabilities		15,214			14,704
Commitments and Contingencies (Notes 1 and 2)
Equity
Common stockholder’s equity
Common stock, authorized 125.0 shares; outstanding 84.1 shares in both periods		841			841
Other paid-in capital		6,599			6,024
Accumulated other comprehensive loss		(34)			(36)
Retained earnings		1,831			1,690
Total common stockholder’s equity		9,237			8,519
Cumulative preferred stock, $4.50 series, authorized 7.5 shares; outstanding 0.4 shares in both periods		37			37
Total equity		9,274			8,556
Total Liabilities and Equity		$	26,189		$	25,399

The accompanying notes are an integral part of these statements.

61

Consumers Energy Company

Consolidated Statements of Changes in Equity (Unaudited)

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Total Equity at Beginning of Period		$	8,977		$	8,505		$	8,556		$	7,737
Common Stock
At beginning and end of period		841			841			841			841
Other Paid-in Capital
At beginning of period		6,299			6,024			6,024			5,374
Stockholder contribution		300			—			575			650
At end of period		6,599			6,024			6,599			6,024
Accumulated Other Comprehensive Loss
At beginning of period		(35)			(28)			(36)			(28)
Retirement benefits liability
At beginning of period		(35)			(28)			(36)			(28)
Amortization of net actuarial loss		1			1			2			1
At end of period		(34)			(27)			(34)			(27)
At end of period		(34)			(27)			(34)			(27)
Retained Earnings
At beginning of period		1,835			1,631			1,690			1,513
Net income		186			230			712			625
Dividends declared on common stock		(190)			(173)			(570)			(449)
Dividends declared on preferred stock		—			—			(1)			(1)
At end of period		1,831			1,688			1,831			1,688
Cumulative Preferred Stock
At beginning and end of period		37			37			37			37
Total Equity at End of Period		$	9,274		$	8,563		$	9,274		$	8,563

The accompanying notes are an integral part of these statements.

62

CMS Energy Corporation

Consumers Energy Company

Notes to the Unaudited Consolidated Financial Statements

These interim consolidated financial statements have been prepared by CMS Energy and Consumers in accordance with GAAP for interim financial information and with the instructions to Form 10‑Q and Article 10 of Regulation S‑X. As a result, CMS Energy and Consumers have condensed or omitted certain information and note disclosures normally included in consolidated financial statements prepared in accordance with GAAP. CMS Energy and Consumers have reclassified certain prior period amounts to conform to the presentation in the present period. The most significant of these reclassifications is related to CMS Energy’s agreement for EnerBank to merge with Regions Bank; the merger was completed in October 2021. The assets and liabilities of EnerBank are presented as held for sale on CMS Energy’s consolidated balance sheets at September 30, 2021 and December 31, 2020. Additionally, EnerBank’s results of operations are presented as income from discontinued operations on CMS Energy’s consolidated statements of income for the three and nine months ended September 30, 2021 and 2020. For information regarding the merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations.

CMS Energy and Consumers are required to make estimates using assumptions that may affect reported amounts and disclosures; actual results could differ from these estimates. In management’s opinion, the unaudited information contained in this report reflects all adjustments of a normal recurring nature necessary to ensure that CMS Energy’s and Consumers’ financial position, results of operations, and cash flows for the periods presented are fairly stated. The notes to the unaudited consolidated financial statements and the related unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in the 2020 Form 10‑K. Due to the seasonal nature of CMS Energy’s and Consumers’ operations, the results presented for this interim period are not necessarily indicative of results to be achieved for the fiscal year.

1:    Regulatory Matters

Regulatory matters are critical to Consumers. The Michigan Attorney General, ABATE, the MPSC Staff, and certain other parties typically participate in MPSC proceedings concerning Consumers, such as Consumers’ rate cases and PSCR and GCR processes. These parties often challenge various aspects of those proceedings, including the prudence of Consumers’ policies and practices, and seek cost disallowances and other relief. The parties also have appealed significant MPSC orders. Depending upon the specific issues, the outcomes of rate cases and proceedings, including judicial proceedings challenging MPSC orders or other actions, could negatively affect CMS Energy’s and Consumers’ liquidity, financial condition, and results of operations. Consumers cannot predict the outcome of these proceedings.

There are multiple appeals pending that involve various issues concerning cost recovery from customers, the MPSC’s authority to approve voluntary revenue refunds, and other matters. Consumers is unable to predict the outcome of these appeals.

Electric Rate Case: In June 2021, the MPSC Staff filed testimony in the general electric rate case that Consumers filed in March 2021. In its testimony, the MPSC Staff recommended the disallowance of cost recovery for certain categories of recently completed capital expenditures incurred by Consumers. In October 2021, the administrative law judge issued a proposal for decision supporting the MPSC Staff’s recommended disallowance. At September 30, 2021, Consumers had incurred $39 million of such expenditures. A material disallowance of incurred capital costs could negatively affect CMS Energy’s and

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Consumers’ results of operations. Consumers cannot predict the outcome of this proceeding. The MPSC is expected to issue a final order in December 2021.

Reserve for Customer Refunds: In December 2020, the MPSC issued an order authorizing Consumers to refund $28 million voluntarily to utility customers. In May 2021, the MPSC approved a filing submitted by Consumers that proposed the refund take the form of incremental spending in 2021 above amounts included in rates on various programs, including electric service restoration and gas and electric technology expenses. If Consumers does not achieve the incremental spending, the remaining balance will be provided to electric or gas utility customers through a bill credit. Consumers had recorded a current regulatory liability of $8 million at September 30, 2021 and $28 million at December 31, 2020 related to this voluntary refund.

Voluntary Transmission Asset Sale Gain Share: In October 2020, Consumers completed a sale of the electric utility’s remaining transmission equipment to METC. In December 2020, Consumers filed an application with the MPSC requesting approval to share voluntarily half of the gain from the sale with electric utility customers through incremental service restoration spending in 2021; this application was approved by the MPSC in February 2021. As a result, the $14 million gain was recorded on Consumers’ consolidated balance sheets as a current regulatory liability at December 31, 2020 and was shared with customers in 2021.

Energy Waste Reduction Plan Incentive: Consumers filed its 2020 energy waste reduction reconciliation in May 2021, requesting the MPSC’s approval to collect from customers the maximum performance incentive of $42 million for exceeding statutory savings targets in 2020. Consumers recognized incentive revenue under this program of $42 million in 2020.

2:    Contingencies and Commitments

CMS Energy and Consumers are involved in various matters that give rise to contingent liabilities. Depending on the specific issues, the resolution of these contingencies could negatively affect CMS Energy’s and Consumers’ liquidity, financial condition, and results of operations. In their disclosures of these matters, CMS Energy and Consumers provide an estimate of the possible loss or range of loss when such an estimate can be made. Disclosures that state that CMS Energy or Consumers cannot predict the outcome of a matter indicate that they are unable to estimate a possible loss or range of loss for the matter.

CMS Energy Contingencies

Bay Harbor: CMS Land retained environmental remediation obligations for the collection and treatment of leachate at Bay Harbor after selling its interests in the development in 2002. Leachate is produced when water enters into cement kiln dust piles left over from former cement plant operations at the site. In 2012, CMS Land and EGLE finalized an agreement that established the final remedies and the future water quality criteria at the site. CMS Land completed all construction necessary to implement the remedies required by the agreement and will continue to maintain and operate a system to discharge treated leachate into Little Traverse Bay under an NPDES permit, which was valid through September 2020. CMS Land submitted a renewal request for the permit in April 2020. CMS Land is allowed to continue operating under the previous NPDES permit until a response is received from EGLE.

At September 30, 2021, CMS Energy had a recorded liability of $44 million for its remaining obligations for environmental remediation. CMS Energy calculated this liability based on discounted projected costs, using a discount rate of 4.34 percent and an inflation rate of one percent on annual operating and maintenance costs. The undiscounted amount of the remaining obligation is $54 million. CMS Energy

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expects to pay the following amounts for long-term leachate disposal and operating and maintenance costs during the remainder of 2021 and in each of the next five years:

In Millions
	2021			2022			2023			2024			2025			2026
CMS Energy
Long-term leachate disposal and operating and maintenance costs		$	1		$	4		$	4		$	4		$	4		$	4

CMS Energy’s estimate of response activity costs and the timing of expenditures could change if there are changes in circumstances or assumptions used in calculating the liability. Although a liability for its present estimate of remaining response activity costs has been recorded, CMS Energy cannot predict the ultimate financial impact or outcome of this matter.

Equatorial Guinea Tax Claim: In 2002, CMS Energy sold its oil, gas, and methanol investments in Equatorial Guinea. The government of Equatorial Guinea claims that, in connection with the sale, CMS Energy owes $152 million in taxes, plus substantial penalties and interest that could be up to or exceed the amount of the taxes claimed. In 2015, the matter was proceeding to formal arbitration; however, since then, the government of Equatorial Guinea has stopped communicating. CMS Energy has concluded that the government’s tax claim is without merit and believes the likelihood of material loss to be remote, but cannot predict the financial impact or outcome of the matter. An unfavorable outcome could have a material adverse effect on CMS Energy’s liquidity, financial condition, and results of operations.

Consumers Electric Utility Contingencies

Electric Environmental Matters: Consumers’ operations are subject to environmental laws and regulations. Historically, Consumers has generally been able to recover, in customer rates, the costs to operate its facilities in compliance with these laws and regulations.

Cleanup and Solid Waste: Consumers expects to incur remediation and other response activity costs at a number of sites under NREPA. Consumers believes that these costs should be recoverable in rates, but cannot guarantee that outcome. Consumers estimates that its liability for NREPA sites for which it can estimate a range of loss will be between $2 million and $4 million. At September 30, 2021, Consumers had a recorded liability of $2 million, the minimum amount in the range of its estimated probable NREPA liability, as no amount in the range was considered a better estimate than any other amount.

Consumers is a potentially responsible party at a number of contaminated sites administered under CERCLA. CERCLA liability is joint and several. In 2010, Consumers received official notification from the EPA that identified Consumers as a potentially responsible party for cleanup of PCBs at the Kalamazoo River CERCLA site. The notification claimed that the EPA has reason to believe that Consumers disposed of PCBs and arranged for the disposal and treatment of PCB-containing materials at portions of the site. In 2011, Consumers received a follow-up letter from the EPA requesting that Consumers agree to participate in a removal action plan along with several other companies for an area of lower Portage Creek, which is connected to the Kalamazoo River. All parties, including Consumers, that were asked to participate in the removal action plan declined to accept liability. Until further information is received from the EPA, Consumers is unable to estimate a range of potential liability for cleanup of the river.

Based on its experience, Consumers estimates that its share of the total liability for known CERCLA sites will be between $3 million and $8 million. Various factors, including the number and creditworthiness of

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potentially responsible parties involved with each site, affect Consumers’ share of the total liability. At September 30, 2021, Consumers had a recorded liability of $3 million for its share of the total liability at these sites, the minimum amount in the range of its estimated probable CERCLA liability, as no amount in the range was considered a better estimate than any other amount.

The timing of payments related to Consumers’ remediation and other response activities at its CERCLA and NREPA sites is uncertain. Consumers periodically reviews these cost estimates. A change in the underlying assumptions, such as an increase in the number of sites, different remediation techniques, the nature and extent of contamination, and legal and regulatory requirements, could affect its estimates of NREPA and CERCLA liability.

Ludington PCB: In 1998, during routine maintenance activities, Consumers identified PCB as a component in certain paint, grout, and sealant materials at Ludington. Consumers removed part of the PCB material and replaced it with non‑PCB material. Consumers has had several communications with the EPA regarding this matter, but cannot predict the financial impact or outcome.

MCV PPA: In 2017, the MCV Partnership initiated arbitration against Consumers, asserting a breach of contract associated with the MCV PPA. In 2019, an arbitration panel issued an order concluding that the MCV Partnership is not entitled to any damages associated with a claim against Consumers that was related to the Clean Air Act. In November 2020, the MCV Partnership and Consumers signed a settlement agreement resolving all remaining disputes between the parties, and filed the settlement and associated agreements with the MPSC for approval. In March 2021, the MPSC approved the settlement and associated agreements.

Plant Purchase Commitment: In conjunction with its 2021 IRP, Consumers executed agreements to purchase:

•the New Covert Generating Facility, a natural gas-fueled generating unit with 1,176 MW of nameplate capacity in Van Buren County, Michigan, for $810 million, subject to certain adjustments, in 2023

•the enterprises segment’s three natural gas-fueled generating units, totaling 1,001 MW of nameplate capacity, for $515 million, subject to certain adjustments, in 2025

These agreements are subject to the approval of the MPSC and FERC and the New Covert Generating Facility agreement is subject to the expiration of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976.

Consumers Gas Utility Contingencies

Gas Environmental Matters: Consumers expects to incur remediation and other response activity costs at a number of sites under NREPA. These sites include 23 former MGP facilities. Consumers operated the facilities on these sites for some part of their operating lives. For some of these sites, Consumers has no present ownership interest or may own only a portion of the original site.

At September 30, 2021, Consumers had a recorded liability of $57 million for its remaining obligations for these sites. This amount represents the present value of long-term projected costs, using a discount rate of 2.57 percent and an inflation rate of 2.5 percent. The undiscounted amount of the remaining

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obligation is $62 million. Consumers expects to pay the following amounts for remediation and other response activity costs during the remainder of 2021 and in each of the next five years:

In Millions
	2021			2022			2023			2024			2025			2026
Consumers
Remediation and other response activity costs		$	1		$	4		$	9		$	24		$	11		$	1

Consumers periodically reviews these cost estimates. Any significant change in the underlying assumptions, such as an increase in the number of sites, changes in remediation techniques, or legal and regulatory requirements, could affect Consumers’ estimates of annual response activity costs and the MGP liability.

Pursuant to orders issued by the MPSC, Consumers defers its MGP-related remediation costs and recovers them from its customers over a ten-year period. At September 30, 2021, Consumers had a regulatory asset of $114 million related to the MGP sites.

Consumers estimates that its liability to perform remediation and other response activities at NREPA sites other than the MGP sites could reach $3 million. At September 30, 2021, Consumers had a recorded liability of $1 million, the minimum amount in the range of its estimated probable liability, as no amount in the range was considered a better estimate than any other amount.

Ray Compressor Station: On January 30, 2019, Consumers experienced a fire at the Ray Compressor Station, which resulted in the Ray Storage Field being off‑line or operating at significantly reduced capacity, which negatively affected Consumers’ natural gas supply and delivery capacity. This incident, which occurred during the extreme polar vortex weather condition, required Consumers to request voluntary reductions in customer load, to implement contingency gas supply purchases, and to implement a curtailment of natural gas deliveries for industrial and large commercial customers pursuant to Consumers’ MPSC curtailment tariff. The curtailment and request for voluntary reductions of customer loads were canceled as of midnight, February 1, 2019. Consumers investigated the cause of the incident, and filed a report on the incident with the MPSC in April 2019. In response, the MPSC issued an order in July 2019, directing Consumers to file additional reports regarding the incident and to include detail of the resulting costs in a future rate proceeding. The compressor station is presently operating at full capacity.

In May 2020, the MPSC approved an administrative settlement agreement between Consumers and the MPSC Staff, which resulted in a $10,000 civil penalty in connection with the fire. Consumers may also be subject to various claims from impacted customers and claims for damages.

In September 2020, the MPSC disallowed the recovery of $7 million in incremental gas purchases related to the fire. In January 2021, the MPSC denied Consumers’ petition for a rehearing challenging this disallowance. In February 2021, Consumers filed an appeal of the MPSC’s denial with the Michigan Court of Appeals. Consumers could also be subject to disallowances of costs associated with the repair and modification of the Ray Compressor Station. At September 30, 2021, Consumers had incurred capital expenditures of $17 million to restore and modify the compressor station.

As of September 30, 2021, Consumers had recorded an insurance recovery of $10 million related to the compressor station. Consumers recognized $4 million of the insurance recovery as a reduction to plant, property, and equipment, $3 million as a reduction of maintenance and other operating expenses, and $3 million as operating revenue, which represented recovery of incremental gas purchases related to the fire.

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At this time, Consumers cannot predict the outcome of these matters or other gas-related incidents and a reasonable estimate of a total loss cannot be made, but they could have a material adverse effect on CMS Energy’s and Consumers’ results of operations, financial condition, or liquidity, and could subject Consumers’ gas utility to increased regulatory scrutiny.

Guarantees

Presented in the following table are CMS Energy’s and Consumers’ guarantees at September 30, 2021:

In Millions
Guarantee Description	Issue Date	Expiration Date	Maximum Obligation			Carrying Amount
CMS Energy, including Consumers
Indemnity obligations from purchase of VIE1	September 2020	indefinite		$	320		$	—
Indemnity obligations from stock and asset sale agreements2	various	indefinite		153			2
Guarantee3	July 2011	indefinite		30			—
Consumers
Guarantee3	July 2011	indefinite		$	30		$	—

1In conjunction with the purchase of its interest in Aviator Wind Equity Holdings, CMS Enterprises assumed certain indemnity obligations that protect the associated tax equity investor against losses incurred as a result of breaches of representations and warranties provided by Aviator Wind Equity Holdings and its subsidiaries. These obligations are generally capped at an amount equal to the tax equity investor’s capital contributions plus a specified return, less any distributions and tax benefits it receives, in connection with its membership interest in Aviator Wind. CMS Enterprises would recover 49 percent of any amounts paid to the tax equity investor from the other owner of Aviator Wind Equity Holdings. Additionally, Aviator Wind holds insurance coverage that would partially protect against losses incurred as a result of certain failures to qualify for production tax credits. For further details on CMS Enterprises’ ownership interest in Aviator Wind Equity Holdings, see Note 12, Variable Interest Entities.

2These obligations arose from stock and asset sale agreements under which CMS Energy or a subsidiary of CMS Energy indemnified the purchaser for losses resulting from various matters, primarily claims related to taxes. The maximum obligation amount is mostly related to the Equatorial Guinea tax claim discussed in the CMS Energy Contingencies section of this Note. CMS Energy believes the likelihood of material loss to be remote for the indemnity obligations not recorded as liabilities.

3This obligation comprises a guarantee provided by Consumers to the U.S. Department of Energy in connection with a settlement agreement regarding damages resulting from the department’s failure to accept spent nuclear fuel from nuclear power plants formerly owned by Consumers.

Additionally, in the normal course of business, CMS Energy, Consumers, and certain other subsidiaries of CMS Energy have entered into various agreements containing tax and other indemnity provisions for which they are unable to estimate the maximum potential obligation. At September 30, 2021, the carrying value of these indemnity obligations was $1 million. CMS Energy and Consumers consider the likelihood that they would be required to perform or incur substantial losses related to these indemnities to be remote.

Other Contingencies

In addition to the matters disclosed in this Note and Note 1, Regulatory Matters, there are certain other lawsuits and administrative proceedings before various courts and governmental agencies, as well as

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unasserted claims that may result in such proceedings, arising in the ordinary course of business to which CMS Energy, Consumers, and certain other subsidiaries of CMS Energy are parties. These other lawsuits, proceedings, and unasserted claims may involve personal injury, property damage, contracts, environmental matters, federal and state taxes, rates, licensing, employment, and other matters. Further, CMS Energy and Consumers occasionally self-report certain regulatory non‑compliance matters that may or may not eventually result in administrative proceedings. CMS Energy and Consumers believe that the outcome of any one of these proceedings and potential claims will not have a material negative effect on their consolidated results of operations, financial condition, or liquidity.

3:    Financings and Capitalization

Financings: Presented in the following table is a summary of major long-term debt issuances during the nine months ended September 30, 2021:

	Principal (In Millions)			Interest Rate	Issuance Date	Maturity Date
Consumers
First mortgage bonds		$	300	2.650%	August 2021	August 2052

In July 2020, Consumers purchased, in lieu of redemption, $35 million of variable-rate tax-exempt revenue bonds that mature in April 2035. In October 2021, Consumers remarketed the $35 million variable-rate tax-exempt revenue bonds, bearing interest at a rate of 0.875 percent through October 2026, at which time the rate will reset.

In October 2021, CMS Energy retired its $200 million term loan with a maturity of November 2021.

Credit Facilities: The following credit facilities with banks were available at September 30, 2021:

In Millions
Expiration Date	Amount of Facility			Amount Borrowed			Letters of Credit Outstanding			Amount Available
CMS Energy, parent only
June 5, 2024		$	550		$	—		$	18		$	532
September 23, 20221		31			—			31			—
CMS Enterprises, including subsidiaries
September 25, 20252		$	39		$	—		$	39		$	—
September 30, 20253		18			—			8			10
Consumers4
June 5, 2024		$	850		$	—		$	12		$	838
November 19, 2022		250			—			1			249
April 18, 2022		30			—			30			—

1The maximum aggregate of letters of credit that may be issued under this facility is $50 million. The amount remaining under the facility is uncommitted.

2This letter of credit facility is available to Aviator Wind Equity Holdings. For more information regarding Aviator Wind Equity Holdings, see Note 12, Variable Interest Entities.

3Under this facility, $8 million is available solely for the purpose of issuing letters of credit. Obligations under this facility are secured by the collateral accounts with the lending bank.

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4Obligations under these facilities are secured by first mortgage bonds of Consumers.

Short-term Borrowings: Under Consumers’ commercial paper program, Consumers may issue, in one or more placements, investment-grade commercial paper notes with maturities of up to 365 days at market interest rates. These issuances are supported by Consumers’ revolving credit facilities and may have an aggregate principal amount outstanding of up to $500 million. While the amount of outstanding commercial paper does not reduce the available capacity of the revolving credit facilities, Consumers does not intend to issue commercial paper in an amount exceeding the available capacity of the facilities. At September 30, 2021, there were no commercial paper notes outstanding under this program.

In December 2020, Consumers renewed a short-term credit agreement with CMS Energy, permitting Consumers to borrow up to $350 million at an interest rate of one month LIBOR minus 0.100 percent. In October 2021, Consumers increased the limit at which it could borrow under the agreement to $500 million. At September 30, 2021, there were no outstanding loans under the agreement.

Dividend Restrictions: At September 30, 2021, payment of dividends by CMS Energy on its common stock was limited to $5.9 billion under provisions of the Michigan Business Corporation Act of 1972.

Under the provisions of its articles of incorporation, at September 30, 2021, Consumers had $1.8 billion of unrestricted retained earnings available to pay dividends on its common stock to CMS Energy. Provisions of the Federal Power Act and the Natural Gas Act appear to restrict dividends payable by Consumers to the amount of Consumers’ retained earnings. Several decisions from FERC suggest that, under a variety of circumstances, dividends from Consumers on its common stock would not be limited to amounts in Consumers’ retained earnings. Any decision by Consumers to pay dividends on its common stock in excess of retained earnings would be based on specific facts and circumstances and would be subject to a formal regulatory filing process.

During the nine months ended September 30, 2021, Consumers paid $570 million in dividends on its common stock to CMS Energy.

Issuance of Common Stock: In 2020, CMS Energy entered into an equity offering program under which it may sell, from time to time, shares of CMS Energy common stock. Under the program, CMS Energy may sell its common stock in privately negotiated transactions, in “at the market” offerings, through forward sales transactions, or otherwise.

CMS Energy may sell shares of its common stock having an aggregate sales price of up to $500 million. Presented in the following table are details of CMS Energy’s forward sales contracts under this program at September 30, 2021:

			Forward Price Per Share
Contract Date	Maturity Date	Number of Shares	Initial			September 30, 2021
September 15, 2020	June 30, 2022	846,759		$	61.04		$	59.01
December 22, 2020	June 22, 2022	115,595		61.81			60.27

These contracts allow CMS Energy to either physically settle the contracts by issuing shares of its common stock at the then-applicable forward sale price specified by the agreement or net settle the contracts through the delivery or receipt of cash or shares. CMS Energy may settle the contracts at any time through their maturity dates, and presently intends to physically settle the contracts by delivering shares of its common stock.

The initial forward price in the forward equity sale contracts includes a deduction for commissions and will be adjusted on a daily basis over the term based on an interest rate factor and decreased on certain

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dates by certain predetermined amounts to reflect expected dividend payments. No amounts are recorded on CMS Energy’s consolidated balance sheets until settlements of the forward equity sale contracts occur. If CMS Energy had elected to net share settle the contracts as of September 30, 2021, CMS Energy would have been required to deliver 10,266 shares.

Issuance of Preferred Stock: On July 1, 2021, CMS Energy issued 9.2 million depositary shares, each representing 1/1,000th share of its Series C preferred stock, at a price of $25.00 per depositary share. The transaction resulted in net proceeds of $224 million, which will be used for general corporate purposes. Dividends on the preferred stock accumulate at an annual rate of 4.200 percent and are payable quarterly, commencing on October 15, 2021.

The Series C preferred stock has no maturity or mandatory redemption date and is not redeemable at the option of the holders. CMS Energy may, at its option, redeem the Series C preferred stock, in whole or in part, at a price equal to $25,000 per share (equivalent to $25.00 per depositary share), plus accumulated and unpaid dividends, at any time on or after July 15, 2026. The Series C preferred stock ranks senior to CMS Energy’s common stock with respect to dividend rights and distribution rights upon liquidation.

4:    Fair Value Measurements

Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. When measuring fair value, CMS Energy and Consumers are required to incorporate all assumptions that market participants would use in pricing an asset or liability, including assumptions about risk. A fair value hierarchy prioritizes inputs used to measure fair value according to their observability in the market. The three levels of the fair value hierarchy are as follows:

•Level 1 inputs are unadjusted quoted prices in active markets for identical assets or liabilities.

•Level 2 inputs are observable, market-based inputs, other than Level 1 prices. Level 2 inputs may include quoted prices for similar assets or liabilities in active markets, quoted prices in inactive markets, and inputs derived from or corroborated by observable market data.

•Level 3 inputs are unobservable inputs that reflect CMS Energy’s or Consumers’ own assumptions about how market participants would value their assets and liabilities.

CMS Energy and Consumers classify fair value measurements within the fair value hierarchy based on the lowest level of input that is significant to the fair value measurement in its entirety.

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Assets and Liabilities Measured at Fair Value on a Recurring Basis

Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:

In Millions
	CMS Energy, including Consumers						Consumers
	September 30 2021			December 31 2020			September 30 2021			December 31 2020
Assets1
Restricted cash equivalents		$	30		$	17		$	26		$	15
Nonqualified deferred compensation plan assets		25			23			20			18
Derivative instruments		2			1			2			1
Total assets		$	57		$	41		$	48		$	34
Liabilities1
Nonqualified deferred compensation plan liabilities		$	25		$	23		$	20		$	18
Derivative instruments		9			11			—			—
Total liabilities		$	34		$	34		$	20		$	18

1All assets and liabilities were classified as Level 1 with the exception of derivative contracts, which were classified as Level 2 or Level 3.

Restricted Cash Equivalents: Restricted cash equivalents consist of money market funds with daily liquidity. For further details, see Note 10, Cash and Cash Equivalents.

Nonqualified Deferred Compensation Plan Assets and Liabilities: The nonqualified deferred compensation plan assets consist of mutual funds, which are valued using the daily quoted net asset values. CMS Energy and Consumers value their nonqualified deferred compensation plan liabilities based on the fair values of the plan assets, as they reflect the amount owed to the plan participants in accordance with their investment elections. CMS Energy and Consumers report the assets in other non‑current assets and the liabilities in other non‑current liabilities on their consolidated balance sheets.

Derivative Instruments: CMS Energy and Consumers value their derivative instruments using either a market approach that incorporates information from market transactions, or an income approach that discounts future expected cash flows to a present value amount. CMS Energy’s and Consumers’ derivatives are classified as Level 2 or Level 3.

The derivatives classified as Level 2 are interest rate swaps at CMS Energy, which are valued using market-based inputs. CMS Energy uses interest rate swaps to manage its interest rate risk on certain long‑term debt obligations.

A subsidiary of CMS Enterprises uses floating-to-fixed interest rate swaps to reduce the impact of interest rate fluctuations associated with future interest payments on certain long‑term variable-rate debt. The interest rate swaps are accounted for as cash flow hedges of the future variability of interest payments on debt with a notional amount of $81 million at September 30, 2021 and $85 million at December 31, 2020. Gains or losses on these swaps are initially reported in other comprehensive income (loss) and then, as interest payments are made on the hedged debt, are recognized in earnings within interest on long-term debt on CMS Energy’s consolidated statements of income. CMS Energy recorded gains (losses) in other

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comprehensive income (loss) of $1 million for the nine months ended September 30, 2021 and $(6) million for the nine months ended September 30, 2020. There were no material impacts on interest on long-term debt associated with these swaps during the periods presented. The fair value of these swaps recorded in other liabilities on CMS Energy’s consolidated balance sheets totaled $6 million at September 30, 2021 and $9 million at December 31, 2020. CMS Energy also has other interest rate swaps that economically hedge interest rate risk on debt, but that do not qualify for cash flow hedge accounting; the amounts associated with these swaps were not material for the periods presented.

The majority of derivatives classified as Level 3 are FTRs held by Consumers. Due to the lack of quoted pricing information, Consumers determines the fair value of its FTRs based on Consumers’ average historical settlements. There was no material activity within the Level 3 categories of assets and liabilities during the periods presented.

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5:    Financial Instruments

Presented in the following table are the carrying amounts and fair values, by level within the fair value hierarchy, of CMS Energy’s and Consumers’ financial instruments that are not recorded at fair value. The table excludes cash, cash equivalents, short-term financial instruments, and trade accounts receivable and payable whose carrying amounts approximate their fair values. For information about assets and liabilities recorded at fair value and for additional details regarding the fair value hierarchy, see Note 4, Fair Value Measurements.

In Millions
	September 30, 2021															December 31, 2020
	Carrying Amount			Fair Value												Carrying Amount			Fair Value
				Total			Level												Total			Level
							1			2			3									1			2			3
CMS Energy, including Consumers
Assets
Long-term receivables1		$	14		$	14		$	—		$	—		$	14		$	17		$	17		$	—		$	—		$	17
Liabilities
Long-term debt2		12,599			13,886			1,195			10,727			1,964			12,315			14,601			1,249			11,267			2,085
Long-term payables3		31			32			—			—			32			33			35			—			—			35
Consumers
Assets
Long-term receivables1		$	14		$	14		$	—		$	—		$	14		$	17		$	17		$	—		$	—		$	17
Notes receivable – related party4		104			104			—			—			104			107			107			—			—			107
Liabilities
Long-term debt5		8,392			9,411			—			7,447			1,964			8,106			9,801			—			7,716			2,085

1Includes current portion of long-term accounts receivable of $9 million at September 30, 2021 and $12 million at December 31, 2020.

2Includes current portion of long-term debt of $572 million at September 30, 2021 and $571 million at December 31, 2020.

3Includes current portion of long-term payables of $22 million at September 30, 2021 and $6 million at December 31, 2020.

4Includes current portion of notes receivable – related party of $7 million at September 30, 2021 and December 31, 2020.

5Includes current portion of long-term debt of $364 million at September 30, 2021 and December 31, 2020.

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6:    Retirement Benefits

CMS Energy and Consumers provide pension, OPEB, and other retirement benefits to employees under a number of different plans.

Costs: Presented in the following table are the costs (credits) and other changes in plan assets and benefit obligations incurred in CMS Energy’s and Consumers’ retirement benefits plans:

In Millions
	DB Pension Plans												OPEB Plan
	Three Months Ended						Nine Months Ended						Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020			2021			2020			2021			2020
CMS Energy, including Consumers
Net periodic cost (credit)
Service cost		$	14		$	12		$	41		$	37		$	5		$	4		$	14		$	12
Interest cost		14			20			44			61			6			8			17			25
Settlement loss		—			1			—			1			—			—			—			—
Expected return on plan assets		(51)			(47)			(155)			(143)			(28)			(25)			(82)			(75)
Amortization of:
Net loss		25			23			76			67			2			4			6			11
Prior service cost (credit)		1			—			3			1			(14)			(14)			(40)			(42)
Settlement loss		1			—			4			—			—			—			—			—
Net periodic cost (credit)		$	4		$	9		$	13		$	24		$	(29)		$	(23)		$	(85)		$	(69)
Consumers
Net periodic cost (credit)
Service cost		$	14		$	12		$	40		$	36		$	4		$	3		$	13		$	11
Interest cost		14			20			42			59			6			8			17			24
Expected return on plan assets		(49)			(45)			(147)			(136)			(26)			(23)			(77)			(70)
Amortization of:
Net loss		24			22			73			64			2			4			6			11
Prior service cost (credit)		1			—			3			1			(12)			(13)			(38)			(40)
Settlement loss		1			—			4			—			—			—			—			—
Net periodic cost (credit)		$	5		$	9		$	15		$	24		$	(26)		$	(21)		$	(79)		$	(64)

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7:    Income Taxes

Presented in the following table is a reconciliation of the statutory U.S. federal income tax rate to the effective income tax rate from continuing operations:

Nine Months Ended September 30	2021			2020
CMS Energy, including Consumers
U.S. federal income tax rate		21.0	%		21.0	%
Increase (decrease) in income taxes from:
State and local income taxes, net of federal effect		5.5			4.8
TCJA excess deferred taxes1		(5.8)			(4.3)
Production tax credits		(4.8)			(3.3)
Accelerated flow-through of regulatory tax benefits2		(3.2)			(1.6)
Research and development tax credits, net3		(0.3)			(1.6)
Refund of alternative minimum tax sequestration4		—			(1.4)
Other, net		0.4			0.1
Effective tax rate		12.8	%		13.7	%
Consumers
U.S. federal income tax rate		21.0	%		21.0	%
Increase (decrease) in income taxes from:
State and local income taxes, net of federal effect		5.2			5.0
TCJA excess deferred taxes1		(4.6)			(3.6)
Production tax credits		(3.5)			(1.9)
Accelerated flow-through of regulatory tax benefits2		(2.2)			(1.1)
Research and development tax credits, net3		(0.3)			(1.3)
Other, net		(0.2)			(0.3)
Effective tax rate		15.4	%		17.8	%

1In September 2020, the MPSC authorized Consumers to accelerate the amortization of a regulatory liability associated with unprotected, non‑property-related excess deferred income taxes resulting from the TCJA. The regulatory liability, which was previously scheduled to be amortized through 2029, will now be fully amortized by the end of 2022.

2In September 2020, the MPSC authorized Consumers to accelerate the amortization of income tax benefits associated with the cost to remove gas plant assets. These tax benefits, which were previously scheduled to be amortized through 2025, will now be fully amortized by the end of 2022.

3In March 2020, CMS Energy finalized a study of research and development tax credits for tax years 2012 through 2018. As a result, in 2020, CMS Energy, including Consumers, recognized a $9 million increase in the credit, net of reserves for uncertain tax positions. Of this amount, $8 million was recognized at Consumers.

4In January 2020, the IRS issued a decision restoring alternative minimum tax credit refunds sequestered in years prior to 2018. As a result, in 2020, CMS Energy recognized a $9 million income tax benefit for sequestered amounts related to its 2017 tax return. CMS Energy received the refund in April 2020.

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8:    Earnings Per Share—CMS Energy

Presented in the following table are CMS Energy’s basic and diluted EPS computations based on income from continuing operations:

In Millions, Except Per Share Amounts
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Income available to common stockholders
Income from continuing operations		$	153		$	198		$	614		$	556
Less loss attributable to noncontrolling interests		(6)			(8)			(18)			(7)
Less preferred stock dividends		3			—			3			—
Income from continuing operations available to common stockholders – basic and diluted		$	156		$	206		$	629		$	563
Average common shares outstanding
Weighted-average shares – basic		289.1			285.6			288.9			284.8
Add dilutive nonvested stock awards		0.5			0.8			0.5			0.9
Add dilutive forward equity sale contracts		—			0.5			—			0.6
Weighted-average shares – diluted		289.6			286.9			289.4			286.3
Income from continuing operations per average common share available to common stockholders
Basic		$	0.54		$	0.72		$	2.18		$	1.98
Diluted		0.54			0.72			2.18			1.97

Nonvested Stock Awards

CMS Energy’s nonvested stock awards are composed of participating and non‑participating securities. The participating securities accrue cash dividends when common stockholders receive dividends. Since the recipient is not required to return the dividends to CMS Energy if the recipient forfeits the award, the nonvested stock awards are considered participating securities. As such, the participating nonvested stock awards were included in the computation of basic EPS. The non‑participating securities accrue stock dividends that vest concurrently with the stock award. If the recipient forfeits the award, the stock dividends accrued on the non‑participating securities are also forfeited. Accordingly, the non‑participating awards and stock dividends were included in the computation of diluted EPS, but not in the computation of basic EPS.

Forward Equity Sale Contracts

CMS Energy has entered into forward equity sale contracts. These forward equity sale contracts are non‑participating securities. While the forward sale price in the forward equity sale contract is decreased on certain dates by certain predetermined amounts to reflect expected dividend payments, these price adjustments were set upon inception of the agreement and the forward contract does not give the owner the right to participate in undistributed earnings. Accordingly, the forward equity sale contracts were included in the computation of diluted EPS, but not in the computation of basic EPS. For further details on the forward equity sale contracts, see Note 3, Financings and Capitalization.

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9:    Revenue

Presented in the following tables are the components of operating revenue:

In Millions
Three Months Ended September 30, 2021	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	1,416		$	224		$	—		$	1,640
Other		—			—			31			31
Revenue recognized from contracts with customers		$	1,416		$	224		$	31		$	1,671
Leasing income		—			—			50			50
Financing income		2			1			—			3
Consumers alternative-revenue programs		1			—			—			1
Total operating revenue – CMS Energy		$	1,419		$	225		$	81		$	1,725
Consumers
Consumers utility revenue
Residential		$	718		$	143					$	861
Commercial		456			36						492
Industrial		167			5						172
Other		75			40						115
Revenue recognized from contracts with customers		$	1,416		$	224					$	1,640
Financing income		2			1						3
Alternative-revenue programs		1			—						1
Total operating revenue – Consumers		$	1,419		$	225					$	1,644

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $35 million for the three months ended September 30, 2021.

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In Millions
Three Months Ended September 30, 2020	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	1,255		$	192		$	—		$	1,447
Other		—			—			21			21
Revenue recognized from contracts with customers		$	1,255		$	192		$	21		$	1,468
Leasing income		—			—			36			36
Financing income		2			1			—			3
Total operating revenue – CMS Energy		$	1,257		$	193		$	57		$	1,507
Consumers
Consumers utility revenue
Residential		$	624		$	120					$	744
Commercial		413			27						440
Industrial		161			5						166
Other		57			40						97
Revenue recognized from contracts with customers		$	1,255		$	192					$	1,447
Financing income		2			1						3
Total operating revenue – Consumers		$	1,257		$	193					$	1,450

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $23 million for the three months ended September 30, 2020.

In Millions
Nine Months Ended September 30, 2021	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	3,705		$	1,357		$	—		$	5,062
Other		—			—			86			86
Revenue recognized from contracts with customers		$	3,705		$	1,357		$	86		$	5,148
Leasing income		—			—			136			136
Financing income		7			4			—			11
Consumers alternative-revenue programs		1			—			—			1
Total operating revenue – CMS Energy		$	3,713		$	1,361		$	222		$	5,296
Consumers
Consumers utility revenue
Residential		$	1,847		$	917					$	2,764
Commercial		1,191			258						1,449
Industrial		458			36						494
Other		209			146						355
Revenue recognized from contracts with customers		$	3,705		$	1,357					$	5,062
Financing income		7			4						11
Alternative-revenue programs		1			—						1
Total operating revenue – Consumers		$	3,713		$	1,361					$	5,074

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1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $94 million for the nine months ended September 30, 2021.

In Millions
Nine Months Ended September 30, 2020	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	3,300		$	1,212		$	—		$	4,512
Other		—			—			57			57
Revenue recognized from contracts with customers		$	3,300		$	1,212		$	57		$	4,569
Leasing income		—			—			110			110
Financing income		7			5			—			12
Total operating revenue – CMS Energy		$	3,307		$	1,217		$	167		$	4,691
Consumers
Consumers utility revenue
Residential		$	1,612		$	819					$	2,431
Commercial		1,093			227						1,320
Industrial		427			32						459
Other		168			134						302
Revenue recognized from contracts with customers		$	3,300		$	1,212					$	4,512
Financing income		7			5						12
Total operating revenue – Consumers		$	3,307		$	1,217					$	4,524

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $69 million for the nine months ended September 30, 2020.

Electric and Gas Utilities

Consumers Utility Revenue: Consumers recognizes revenue primarily from the sale of electric and gas utility services at tariff-based rates regulated by the MPSC. Consumers’ customer base consists of a mix of residential, commercial, and diversified industrial customers. Consumers’ tariff-based sales performance obligations are described below.

•Consumers has performance obligations for the service of standing ready to deliver electricity or natural gas to customers, and it satisfies these performance obligations over time. Consumers recognizes revenue at a fixed rate as it provides these services. These arrangements generally do not have fixed terms and remain in effect as long as the customer consumes the utility service. The rates are set by the MPSC through the rate-making process and represent the stand-alone selling price of Consumers’ service to stand ready to deliver.

•Consumers has performance obligations for the service of delivering the commodity of electricity or natural gas to customers, and it satisfies these performance obligations upon delivery. Consumers recognizes revenue at a price per unit of electricity or natural gas delivered, based on

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the tariffs established by the MPSC. These arrangements generally do not have fixed terms and remain in effect as long as the customer consumes the utility service. The rates are set by the MPSC through the rate-making process and represent the stand-alone selling price of a bundled product comprising the commodity, electricity or natural gas, and the service of delivering such commodity.

In some instances, Consumers has specific fixed-term contracts with large commercial and industrial customers to provide electricity or gas at certain tariff rates or to provide gas transportation services at contracted rates. The amount of electricity and gas to be delivered under these contracts and the associated future revenue to be received are generally dependent on the customers’ needs. Accordingly, Consumers recognizes revenues at the tariff or contracted rate as electricity or gas is delivered to the customer. Consumers also has other miscellaneous contracts with customers related to pole and other property rentals, appliance service plans, and utility contract work. Generally, these contracts are short term or evergreen in nature.

Accounts Receivable and Unbilled Revenues: Accounts receivable comprise trade receivables and unbilled receivables. CMS Energy and Consumers record their accounts receivable at cost less an allowance for uncollectible accounts. The allowance is increased for uncollectible accounts expense and decreased for account write-offs net of recoveries. CMS Energy and Consumers establish the allowance based on historical losses, management’s assessment of existing economic conditions, customer payment trends, and reasonable and supported forecast information. CMS Energy and Consumers assess late payment fees on trade receivables based on contractual past-due terms established with customers. Accounts are written off when deemed uncollectible, which is generally when they become six months past due. CMS Energy and Consumers recorded uncollectible accounts expense of $6 million for the three months ended September 30, 2021 and $5 million for the three months ended September 30, 2020. CMS Energy and Consumers recorded uncollectible accounts expense of $17 million for the nine months ended September 30, 2021 and $18 million for the nine months ended September 30, 2020.

Consumers’ customers are billed monthly in cycles having billing dates that do not generally coincide with the end of a calendar month. This results in customers having received electricity or natural gas that they have not been billed for as of the month-end. Consumers estimates its unbilled revenues by applying an average billed rate to total unbilled deliveries for each customer class. Unbilled revenues, which are recorded as accounts receivable and accrued revenue on CMS Energy’s and Consumers’ consolidated balance sheets, were $340 million at September 30, 2021 and $437 million at December 31, 2020.

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10:    Cash and Cash Equivalents

Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:

In Millions
	September 30, 2021			December 31, 2020
CMS Energy, including Consumers
Cash and cash equivalents		$	102		$	32
Restricted cash and cash equivalents		30			17
Current assets held for sale		104			136
Cash and cash equivalents, including restricted amounts – CMS Energy		$	236		$	185
Consumers
Cash and cash equivalents		$	29		$	20
Restricted cash and cash equivalents		26			15
Cash and cash equivalents, including restricted amounts – Consumers		$	55		$	35

Cash and Cash Equivalents: Cash and cash equivalents include short-term, highly liquid investments with original maturities of three months or less.

Restricted Cash and Cash Equivalents: Restricted cash and cash equivalents are held primarily for the repayment of securitization bonds and funds held in escrow. Cash and cash equivalents may also be restricted to pay other contractual obligations such as leasing of coal railcars. These amounts are classified as current assets since they relate to payments that could or will occur within one year.

Current Assets Held for Sale: In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. As a result, EnerBank’s cash and cash equivalents are presented as assets held for sale on CMS Energy’s consolidated balance sheets at September 30, 2021 and December 31, 2020. For information regarding the merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations.

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11:    Reportable Segments

Reportable segments consist of business units defined by the products and services they offer. CMS Energy and Consumers evaluate the performance of each segment based on its contribution to net income available to CMS Energy’s common stockholders.

CMS Energy

The segments reported for CMS Energy are:

•electric utility, consisting of regulated activities associated with the generation, purchase, distribution, and sale of electricity in Michigan

•gas utility, consisting of regulated activities associated with the purchase, transmission, storage, distribution, and sale of natural gas in Michigan

•enterprises, consisting of various subsidiaries engaging in domestic independent power production, including the development and operation of renewable generation, and the marketing of independent power production

In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. As a result, EnerBank is not included in the composition of CMS Energy’s reportable segments. EnerBank’s results of operations are presented as income from discontinued operations on CMS Energy’s consolidated statements of income for the three and nine months ended September 30, 2021 and 2020. The assets and liabilities of EnerBank are presented as held for sale on CMS Energy’s consolidated balance sheets at September 30, 2021 and December 31, 2020. For information regarding the merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations.

CMS Energy presents corporate interest and other expenses, discontinued operations, and Consumers’ other consolidated entities within other reconciling items. Beginning in 2021, CMS Land, which holds the environmental remediation obligations at Bay Harbor, will be included within other reconciling items rather than within the enterprises segment. This change was not material and was made to align segment reporting with the legal organization and internal reporting of CMS Energy.

Consumers

The segments reported for Consumers are:

•electric utility, consisting of regulated activities associated with the generation, purchase, distribution, and sale of electricity in Michigan

•gas utility, consisting of regulated activities associated with the purchase, transmission, storage, distribution, and sale of natural gas in Michigan

Consumers’ other consolidated entities are presented within other reconciling items.

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Presented in the following tables is financial information by segment:

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
CMS Energy, including Consumers
Operating revenue
Electric utility		$	1,419		$	1,257		$	3,713		$	3,307
Gas utility		225			193			1,361			1,217
Enterprises		81			57			222			167
Total operating revenue – CMS Energy		$	1,725		$	1,507		$	5,296		$	4,691
Consumers
Operating revenue
Electric utility		$	1,419		$	1,257		$	3,713		$	3,307
Gas utility		225			193			1,361			1,217
Total operating revenue – Consumers		$	1,644		$	1,450		$	5,074		$	4,524
CMS Energy, including Consumers
Net income (loss) available to common stockholders
Electric utility		$	195		$	226		$	504		$	463
Gas utility		(9)			4			208			162
Enterprises		7			13			26			34
Other reconciling items		(7)			(25)			(27)			(62)
Total net income available to common stockholders – CMS Energy		$	186		$	218		$	711		$	597
Consumers
Net income (loss) available to common stockholder
Electric utility		$	195		$	226		$	504		$	463
Gas utility		(9)			4			208			162
Other reconciling items		—			—			(1)			(1)
Total net income available to common stockholder – Consumers		$	186		$	230		$	711		$	624

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In Millions
	September 30, 2021			December 31, 2020
CMS Energy, including Consumers
Plant, property, and equipment, gross
Electric utility1		$	17,992		$	17,155
Gas utility1		10,317			9,581
Enterprises		1,119			1,113
Other reconciling items		22			21
Total plant, property, and equipment, gross – CMS Energy		$	29,450		$	27,870
Consumers
Plant, property, and equipment, gross
Electric utility1		$	17,992		$	17,155
Gas utility1		10,317			9,581
Other reconciling items		22			21
Total plant, property, and equipment, gross – Consumers		$	28,331		$	26,757
CMS Energy, including Consumers
Total assets
Electric utility1		$	16,092		$	15,829
Gas utility1		9,969			9,429
Enterprises		1,275			1,276
Other reconciling items		3,177			3,132
Total assets – CMS Energy		$	30,513		$	29,666
Consumers
Total assets
Electric utility1		$	16,154		$	15,893
Gas utility1		10,017			9,477
Other reconciling items		18			29
Total assets – Consumers		$	26,189		$	25,399

1Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.

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12:    Variable Interest Entities

CMS Enterprises has a 51-percent ownership interest in Aviator Wind Equity Holdings, which holds a Class B membership interest in Aviator Wind, a 525-MW wind generation project in Coke County, Texas. The Class A membership interest in Aviator Wind is held by a tax equity investor, BHE Renewables, LLC, a subsidiary of Berkshire Hathaway Energy Company. Earnings, tax attributes, and cash flows generated by Aviator Wind are allocated among and distributed to the membership classes in accordance with the ratios specified in the associated limited liability company operating agreement; these ratios change over time and are not representative of the ownership interest percentages of each membership class.

Aviator Wind Equity Holdings and Aviator Wind represent VIEs. In accordance with the associated limited liability company operating agreement, the tax equity investor is guaranteed preferred returns from Aviator Wind. However, CMS Enterprises manages and controls the operating activities of Aviator Wind Equity Holdings and, ultimately, Aviator Wind. As a result, CMS Enterprises is the primary beneficiary of Aviator Wind Equity Holdings and Aviator Wind, as it has the power to direct the activities that most significantly impact the economic performance of the companies, as well as the obligation to absorb losses or the right to receive benefits from the companies. CMS Enterprises consolidates Aviator Wind Equity Holdings and Aviator Wind and presents the Class A membership interest and 49 percent of the Class B membership interest in Aviator Wind as noncontrolling interests.

Presented in the following table are the carrying values of the VIEs’ assets and liabilities included on CMS Energy’s consolidated balance sheets:

In Millions
	September 30, 2021			December 31, 2020
Current
Cash and cash equivalents		$	15		$	7
Accounts receivable		8			5
Prepayments and other current assets		1			1
Non-current
Plant, property, and equipment, net		675			692
Total assets1		$	699		$	705
Current
Accounts payable		$	13		$	3
Non-current
Asset retirement obligations		20			19
Total liabilities		$	33		$	22

1Assets may be used only to meet VIEs’ obligations and commitments.

CMS Enterprises is obligated under certain indemnities that protect the tax equity investor against losses incurred as a result of breaches of representations and warranties provided by Aviator Wind Equity Holdings and its subsidiaries. For additional details on these indemnity obligations, see Note 2, Contingencies and Commitments—Guarantees.

Other VIEs: CMS Energy has variable interests in T.E.S. Filer City, Grayling, Genesee, and Craven. While CMS Energy owns 50 percent of each partnership, it is not the primary beneficiary of any of these partnerships because decision making is shared among unrelated parties, and no one party has the ability

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to direct the activities that most significantly impact the entities’ economic performance, such as operations and maintenance, plant dispatch, and fuel strategy. The partners must agree on all major decisions for each of the partnerships.

Presented in the following table is information about these partnerships:

Name	Nature of the Entity	Nature of CMS Energy’s Involvement
T.E.S. Filer City	Coal-fueled power generator	Long-term PPA between partnership and Consumers
		Employee assignment agreement
Grayling	Wood waste-fueled power generator	Long-term PPA between partnership and Consumers
		Reduced dispatch agreement with Consumers1
		Operating and management contract
Genesee	Wood waste-fueled power generator	Long-term PPA between partnership and Consumers
		Reduced dispatch agreement with Consumers1
		Operating and management contract
Craven	Wood waste-fueled power generator	Operating and management contract

1Reduced dispatch agreements allow the facilities to be dispatched based on the market price of power compared with the cost of production of the plants. This results in fuel cost savings that each partnership shares with Consumers’ customers.

The creditors of these partnerships do not have recourse to the general credit of CMS Energy or Consumers. CMS Energy and Consumers have not provided any financial or other support during the periods presented that was not previously contractually required.

CMS Energy’s investment in these partnerships is included in investments on its consolidated balance sheets in the amount of $73 million at September 30, 2021 and $70 million at December 31, 2020.

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13:    Exit Activities and Discontinued Operations

Exit Activities: Under its Clean Energy Plan, Consumers plans to retire the D.E. Karn coal-fueled electric generating units in 2023. In 2019, Consumers announced a retention incentive program to ensure necessary staffing at the D.E. Karn generating complex through the anticipated retirement of the coal-fueled generating units. Based on the number of employees that have chosen to participate, the aggregate cost of the program through 2023 is estimated to be $35 million. In its order in Consumers’ 2020 electric rate case, the MPSC approved deferred accounting treatment for these costs; Consumers began deferring these costs as a regulatory asset in 2021. Within its 2021 IRP, Consumers proposes to retire the J.H. Campbell coal-fueled generating units. No retention incentive costs related to this retirement will be recognized unless Consumers’ 2021 IRP is approved by the MPSC.

As of September 30, 2021, the cumulative cost incurred and charged to expense related to the D.E. Karn retention incentive program was $16 million. Additionally, an amount of $4 million has been capitalized as a cost of plant, property, and equipment and an amount of $5 million has been deferred as a regulatory asset. Presented in the following table is a reconciliation of the retention benefit liability recorded in other liabilities on Consumers’ consolidated balance sheets:

In Millions
	Nine Months Ended
September 30	2021			2020
Retention benefit liability at beginning of period		$	11		$	4
Costs incurred and charged to maintenance and other operating expenses		—			11
Costs deferred as a regulatory asset1		5			—
Costs incurred and capitalized		1			1
Retention benefit liability at the end of the period2		$	17		$	16

1Includes $1 million for the three months ended September 30, 2021.

2Includes current portion of other liabilities of $5 million at September 30, 2021 and $7 million at September 30, 2020.

Discontinued Operations: In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. CMS Energy received proceeds of approximately $1.0 billion from the transaction and expects to recognize a pre-tax gain of approximately $660 million in the fourth quarter of 2021, both of which may be impacted by customary post-closing adjustments. CMS Energy intends to use the proceeds from the merger to fund key initiatives in its core energy business related to safety, reliability, and its clean energy transformation. Under the merger agreement, CMS Energy agreed to indemnify Regions Bank for losses resulting from various matters, primarily breaches of representations and warranties and covenants. CMS Energy considers it remote that it would be required to indemnify or incur substantial losses related to these matters.

As a result of the agreement, EnerBank’s results of operations are presented as income from discontinued operations on CMS Energy’s consolidated statements of income for the three and nine months ended September 30, 2021 and 2020. The assets and liabilities of EnerBank are presented as held for sale on CMS Energy’s consolidated balance sheets at September 30, 2021 and December 31, 2020. Also, as a result of the agreement, EnerBank is not included in the composition of CMS Energy’s reportable segments. For more information regarding the composition of CMS Energy’s reportable segments, see Note 11, Reportable Segments.

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The table below presents the financial results of EnerBank included in income from discontinued operations:

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Operating revenue		$	70		$	68		$	209		$	191
Expenses
Operating expenses		17			39			60			104
Interest expense		11			13			34			43
Income before income taxes		$	42		$	16		$	115		$	44
Transaction costs		(3)			—			(8)			—
Income from discontinued operations before income taxes		$	39		$	16		$	107		$	44
Income tax expense		9			4			25			10
Income from discontinued operations, net of tax		$	30		$	12		$	82		$	34

The table below presents the aggregate carrying amounts for the major classes of assets and liabilities held for sale related to EnerBank:

In Millions
	September 30, 2021			December 31, 2020
Assets
Current
Cash and cash equivalents		$	104		$	136
Accounts receivable and other current assets		143			18
Notes receivable, less allowance of $28 in 2021 and $32 in 2020		247			275
Total current assets		$	494		$	429
Non‑current
Plant, property, and equipment, net		$	29		$	22
Notes receivable, less allowance of $84 in 2021 and $91 in 2020		2,532			2,612
Other non‑current assets		45			46
Total non‑current assets		$	2,606		$	2,680
Total assets		$	3,100		$	3,109
Liabilities
Current
Current portion of long-term debt		$	1,199		$	915
Accounts payable and other current liabilities		34			38
Total current liabilities		$	1,233		$	953
Non‑current
Long-term debt		$	1,522		$	1,890
Other non‑current liabilities		1			4
Total non‑current liabilities		$	1,523		$	1,894
Total liabilities		$	2,756		$	2,847

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Item 2.    Management’s Discussion and Analysis of Financial Condition and Results of Operations

Management’s discussion and analysis of financial condition and results of operations for CMS Energy and Consumers is contained in Part I—Item 1. Financial Statements—MD&A, which is incorporated by reference herein.

Item 3.    Quantitative and Qualitative Disclosures About Market Risk

There have been no material changes to market risk as previously disclosed in Part II—Item 7A. Quantitative and Qualitative Disclosures About Market Risk, in the 2020 Form 10‑K.

Item 4.    Controls and Procedures

CMS Energy

Disclosure Controls and Procedures: CMS Energy’s management, with the participation of its CEO and CFO, has evaluated the effectiveness of its disclosure controls and procedures (as such term is defined in Rules 13a‑15(e) and 15d‑15(e) under the Exchange Act) as of the end of the period covered by this report. Based on such evaluation, CMS Energy’s CEO and CFO have concluded that, as of the end of such period, its disclosure controls and procedures are effective.

Internal Control Over Financial Reporting: There have not been any changes in CMS Energy’s internal control over financial reporting (as such term is defined in Rules 13a‑15(f) and 15d‑15(f) under the Exchange Act) during the last fiscal quarter that have materially affected, or are reasonably likely to affect materially, its internal control over financial reporting.

Consumers

Disclosure Controls and Procedures: Consumers’ management, with the participation of its CEO and CFO, has evaluated the effectiveness of its disclosure controls and procedures (as such term is defined in Rules 13a‑15(e) and 15d‑15(e) under the Exchange Act) as of the end of the period covered by this report. Based on such evaluation, Consumers’ CEO and CFO have concluded that, as of the end of such period, its disclosure controls and procedures are effective.

Internal Control Over Financial Reporting: There have not been any changes in Consumers’ internal control over financial reporting (as such term is defined in Rules 13a‑15(f) and 15d‑15(f) under the Exchange Act) during the last fiscal quarter that have materially affected, or are reasonably likely to affect materially, its internal control over financial reporting.

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Part II—Other Information

Item 1.    Legal Proceedings

CMS Energy, Consumers, and certain of their affiliates are parties to various lawsuits and regulatory matters in the ordinary course of business. For information regarding material legal proceedings, including updates to information reported under Part I—Item 3. Legal Proceedings, of the 2020 Form 10‑K, see Part I—Item 1. Financial Statements—Notes to the Unaudited Consolidated Financial Statements—Note 1, Regulatory Matters and Note 2, Contingencies and Commitments.

Item 1A.    Risk Factors

The following risk factor is in addition to the risk factors included in Part I—Item 1A. Risk Factors in the 2020 Form 10-K. Actual results in future periods for CMS Energy and Consumers could differ materially from historical results and the forward-looking statements contained in this report. Factors that might cause or contribute to these differences include those discussed in the following sections and in Part I—Item 1A. Risk Factors in the 2020 Form 10-K. CMS Energy’s and Consumers’ businesses are influenced by many factors that are difficult to predict, that involve uncertainties that may materially affect results, and that are often beyond their control. Additional risks and uncertainties not presently known or that management believes to be immaterial may also adversely affect CMS Energy or Consumers. The risk factor, as well as the other information included in this report and in other documents filed with the SEC, should be considered carefully before making an investment in securities of CMS Energy or Consumers. Risk factors of Consumers are also risk factors of CMS Energy.

CMS Energy and Consumers have announced an ambitious plan to reduce their impact on climate change. Achieving this plan depends on numerous factors, many of which are outside of their control.

Consumers has announced a long-term strategy for delivering clean, reliable, resilient, and affordable energy, including a plan to end coal use in 2025 as set forth in the 2021 IRP. The MPSC, FERC, other regulatory authorities, or other third parties may prohibit, delay, impair, or deny approval or consent of the 2021 IRP and some or all of the 2021 IRP-associated natural gas-fueled plant acquisitions, or deny reasonable rate recovery of the undepreciated plant balances associated with the retirement of coal-fueled plants necessary to proceed with the 2021 IRP. Consumers may be unable to acquire, site, and/or permit some or all of the generation capacity proposed in the 2021 IRP. Consumers’ ability to implement the 2021 IRP may be affected by global supply chain disruptions. Changes in the cost, availability, and supply of generation capacity may affect the 2021 IRP. Advancements in technology related to items such as battery storage and electric vehicles may not become commercially available or economically feasible as projected in the 2021 IRP. Customer programs such as energy efficiency and demand response may not realize the projected levels of customer participation. CMS Energy and Consumers could suffer financial loss, reputational damage, or other negative repercussions if they are unable to achieve their ambitious plan.

Item 2.    Unregistered Sales of Equity Securities and Use of Proceeds

Unregistered Sales of Equity Securities

None.

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Issuer Repurchases of Equity Securities

Presented in the following table are CMS Energy’s repurchases of common stock for the three months ended September 30, 2021:

Period	Total Number of Shares Purchased1		Average Price Paid per Share			Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs		Maximum Number of Shares That May Yet Be Purchased Under Publicly Announced Plans or Programs
July 1, 2021 to July 31, 2021		161		$	61.82		—		—
August 1, 2021 to August 31, 2021		201		63.27			—		—
September 1, 2021 to September 30, 2021		4,606		64.80			—		—
Total		4,968		$	64.64		—		—

1All of the common shares were repurchased to satisfy the minimum statutory income tax withholding obligation for common shares that have vested under the Performance Incentive Stock Plan. The value of shares repurchased is based on the market price on the vesting date.

Item 3.    Defaults Upon Senior Securities

None.

Item 4.    Mine Safety Disclosures

Not applicable.

Item 5.    Other Information

None.

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Item 6.    Exhibits

CMS Energy’s and Consumers’ Exhibit Index

The agreements included as exhibits to this Form 10-Q filing are included solely to provide information regarding the terms of the agreements and are not intended to provide any other factual or disclosure information about CMS Energy, Consumers, or other parties to the agreements. The agreements may contain representations and warranties made by each of the parties to each of the agreements that were made exclusively for the benefit of the parties involved in each of the agreements and should not be treated as statements of fact. The representations and warranties were made as a way to allocate risk if one or more of those statements prove to be incorrect. The statements were qualified by disclosures of the parties to each of the agreements that may not be reflected in each of the agreements. The agreements may apply standards of materiality that are different than standards applied to other investors. Additionally, the statements were made as of the date of the agreements or as specified in the agreements and have not been updated. The representations and warranties may not describe the actual state of affairs of the parties to each agreement.

Additional information about CMS Energy and Consumers may be found in this filing, at www.cmsenergy.com, at www.consumersenergy.com, and through the SEC’s website at www.sec.gov.

Exhibits		Description
4.11	—	Deposit Agreement, dated as of July 1, 2021, among CMS Energy, Equiniti Trust Company, and the holders from time to time of the depositary receipts described therein (Exhibit 4.2 to Form 8-K filed July 1, 2021 and incorporated herein by reference)
4.21	—	Form of Depositary Receipt (included in Exhibit 4.1)
4.3	—	144th Supplemental Indenture dated as of August 12, 2021 between Consumers Energy and The Bank of New York Mellon, as Trustee. (Exhibit 4.1 to Form 8-K filed August 12, 2021 and incorporated herein by reference)
10.11	—	Amendment No. 1 dated as of August 9, 2021 to the Agreement and Plan of Merger, dated June 7, 2021, by and among CMS Energy, EnerBank USA and Regions Bank
31.1	—	CMS Energy’s certification of the CEO pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	—	CMS Energy’s certification of the CFO pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.3	—	Consumers’ certification of the CEO pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.4	—	Consumers’ certification of the CFO pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	—	CMS Energy’s certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	—	Consumers’ certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	—	Inline XBRL Instance Document
101.SCH	—	Inline XBRL Taxonomy Extension Schema
101.CAL	—	Inline XBRL Taxonomy Extension Calculation Linkbase
101.DEF	—	Inline XBRL Taxonomy Extension Definition Linkbase
101.LAB	—	Inline XBRL Taxonomy Extension Labels Linkbase

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Exhibits		Description
101.PRE	—	Inline XBRL Taxonomy Extension Presentation Linkbase
104	—	Cover Page Interactive Data File (the cover page XBRL tags are embedded in the Inline XBRL document)

1    Obligations of CMS Energy or its subsidiaries, but not of Consumers.

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Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, each registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. The signature for each undersigned company shall be deemed to relate only to matters having reference to such company or its subsidiary.

		CMS ENERGY CORPORATION
Dated: October 28, 2021	By:	/s/ Rejji P. Hayes
		Rejji P. Hayes
		Executive Vice President and Chief Financial Officer
		CONSUMERS ENERGY COMPANY
Dated: October 28, 2021	By:	/s/ Rejji P. Hayes
		Rejji P. Hayes
		Executive Vice President and Chief Financial Officer

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EX-10.1

Exhibit 10.1

AMENDMENT NO. 1 TO THE AGREEMENT AND PLAN OF MERGER

This Amendment No. 1, dated as of August 9, 2021 (this “Amendment”), to that certain Agreement and Plan of Merger, dated as of June 7, 2021 (as amended, restated, supplemented or otherwise modified from time to time, the “Merger Agreement”), by and among CMS Energy Corporation, a Michigan corporation (“Seller”), EnerBank USA, a Utah corporation and an indirect, wholly owned subsidiary of Seller (“Bank”), and Regions Bank, an Alabama state-chartered bank (“Purchaser”).

WHEREAS, in accordance with Section 11.01 of the Merger Agreement, the Parties wish to amend the Merger Agreement as set forth below.

NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties, intending to be legally bound, agree as follows:

1.Defined Terms: Capitalized terms used herein and not otherwise defined herein shall have the meanings ascribed to such terms in the Merger Agreement.

2.Amendments.

a.    The following defined terms and definitions shall be added to Section 1.01:

“‘September 1 Condition’ means, on September 1, 2021, each of the conditions set forth in Article VIII has been satisfied or, to the extent permitted by Law, waived by the Party entitled to the benefits thereof in accordance with this Agreement (other than conditions that by their terms are to be satisfied at the Closing, but subject to the satisfaction or, to the extent permitted by Law, waiver of all such conditions by the Party entitled to the benefits thereof at the Closing).”

“‘September-Closing Indemnity Cap’ means an amount equal to the greater of (a) zero and (b) an amount equal to (i) the Closing Stockholder’s Equity minus (ii) the Closing Stockholder’s Equity (for the purposes of this subclause (ii), as though the Closing Date were September 1, 2021).”

b.    The definition of “Deposit Instrument Amount” in the Merger Agreement is hereby amended and restated in its entirety as follows:

“‘Deposit Instrument Amount’ means an amount equal to:

(a) (i) the principal amount of the deposit liabilities of Bank, as of the Measurement Time, in respect of deposit instruments that (A) have an initial minimum term of greater than six (6) months, (B) are not callable by the Company (or its successors or assigns) at par value three (3) months or earlier after the initial date of funding by the depositor of such deposit instrument and (C) were entered into between (but not including) the date hereof and the earlier of (x) if the September 1 Condition (I) is satisfied, September 1, 2021 or (II) is not

1

satisfied, the Measurement Time and (y) December 15, 2021, multiplied by (ii) 0.25%; plus

(b) (i) the principal amount of the deposit liabilities of Bank, as of the Measurement Time, in respect of deposit instruments that (A) have an initial minimum term of greater than six (6) months, (B) are callable by the Company (or its successors or assigns) at par value three (3) months or earlier after the initial date of funding by the depositor of such deposit instrument and (C) were entered into between (but not including) the date hereof and the earlier of (x) if the September 1 Condition (I) is satisfied, September 1, 2021 or (II) is not satisfied, the Measurement Time and (y) December 15, 2021, multiplied by (ii) 0.15%.”

c.    The definition of “Material Adverse Effect” in the Merger Agreement shall be hereby amended to add the following at the end of the current definition:

“provided, further, that, if the September 1 Condition is satisfied, the definition of “Material Adverse Effect” shall be as follows:

“Material Adverse Effect” means any event, change, occurrence, circumstance or effect that, individually or in the aggregate with any other event, change, occurrence, circumstance or effect, (a) has or would reasonably be expected to have a material adverse effect on the business, results of operation or financial condition of Bank; or (b) would prevent, materially impede or materially delay the consummation of the Merger; provided that, in determining whether a Material Adverse Effect has occurred with respect to the foregoing clause (a), there shall be excluded any event, change, occurrence, circumstance or effect to the extent attributable to, arising out of or resulting from (i) changes of any type in general economic conditions or in equity or debt market conditions, including trading levels and volatility in any capital market; (ii) changes in GAAP or applicable regulatory accounting requirements or authoritative interpretations thereof; (iii) changes in Law or the interpretation or enforcement thereof by any Governmental Authority; (iv) changes in economic, business, credit or financial conditions or trends generally affecting the banking and/or home improvement financing sectors in the United States and its territories generally, including changes in the credit markets, any downgrades in the credit markets, or adverse credit events resulting in deterioration in the credit markets generally, as well as changes to any previously applied asset marks resulting therefrom; (v) the announcement, pendency or performance of this Agreement, the Merger or the other transactions contemplated hereby or the identity of Purchaser (or its Affiliates) as the actual or potential acquirer of Bank, including any termination of, reduction in or similar negative impact on the relationships of Bank, contractual or otherwise, with its customers, suppliers, agents, service providers, Third Party administrators, contractors, partners or employees to the extent attributable to, arising out of or resulting from the identity of Purchaser (or its Affiliates) as the actual or potential acquirer of Bank; (vi) failure, in and of itself, of Bank to meet internal or published projections regarding budgets, plans or forecasts of its revenue, earnings or other financial performance or results of operations, for any period (but not including the underlying causes thereof, unless otherwise excluded from

2

the definition of Material Adverse Effect); (vii) changes in national or international political or social conditions (including the outbreak or escalation of any war, military action, sabotage, cyberattack or acts of terrorism); (viii) actions or omissions, and the effects thereof, taken in connection with this Agreement (including pursuant to Section 7.02) to obtain any consent, approval, authorization or waiver under Law in connection with the Merger and the other transactions contemplated by this Agreement; (ix) actions, or effects of actions, taken by Seller, Bank or any of their Affiliates at the written direction of, or with the prior written consent of, Purchaser or its Affiliates; (x) any breach, violation or non-performance of any provision of this Agreement by Purchaser or any of its Affiliates; (xi) natural disasters, other acts of nature, Contagion Events or “acts of God”; (xii) any action reasonably taken (or not taken) by Bank in good faith in response to Contagion Events; (xiii) any cyberattack or cybersecurity event involving Bank (occurring on or after September 1, 2021); (xiv) the death or incapacitation of Charlie Knadler or the departure, termination or other separation of Charlie Knadler from Bank for any reason (occurring on or after September 1, 2021) or (xv) any termination (or notice of termination) of or reduction in business under any Key Sponsor Contract by any Key Sponsor, or any adverse development in respect of the business relationship between Bank and any Key Sponsor (in each case, occurring on or after September 1, 2021), other than as the result of a material breach or material nonperformance by Bank or its Affiliates (occurring on or after September 1, 2021) under any Key Sponsor Contract; provided that, in the case of clauses (i), (ii), (iii), (iv), (vii), or (xi), only to the extent that such event, change, occurrence, circumstance or effect is disproportionally adverse to Bank as compared to other Persons operating in the home improvement financing industry, as applicable, then only the disproportionate effect of such event, change, occurrence, circumstance or effect will be taken into account in determining whether a Material Adverse Effect has occurred.”

d.    Section 2.03 of the Merger Agreement is hereby amended and restated in its entirety as follows:

“Closing. The closing of the Merger (the “Closing” and the date on which the Closing occurs, the “Closing Date”) shall take place at 10:00 a.m., New York City time, on the first Business Day of the calendar month immediately following the month in which each of the conditions set forth in Article VIII have been satisfied or, to the extent permitted by Law, waived by the Party entitled to the benefits thereof in accordance with this Agreement (other than conditions that by their terms are to be satisfied at the Closing, but subject to the satisfaction or, to the extent permitted by Law, waiver of all such conditions by the Party entitled to the benefits thereof at the Closing), or at such other place, time and date as the Parties may mutually agree in writing, in each case, by electronic exchange of documents (by facsimile, “portable document format,” email or other form of electronic communication) all of which will be deemed to be originals; provided that, notwithstanding the foregoing, the Parties agree that the Closing shall not occur prior to October 1, 2021.”

3

e.    Section 7.11(f)(i)(C) of the Merger Agreement is hereby amended and restated in its entirety as follows:

“Taxes associated with a breach by Seller of the representations in Section 5.16, which such breach occurs prior to, if the September 1 Condition (i) is satisfied, September 1, 2021 or (ii) is not satisfied, the Closing.”

f.    Section 9.02(a)(ii) of the Merger Agreement is hereby amended and restated in its entirety as follows:

“the failure of any of the representations or warranties made by Seller or Bank in Article IV or V (other than the Bank and Seller Fundamental Representations and the representations and warranties in Section 5.15(b)) to be true and correct as of the date such representation or warranty was made (or was deemed made) that arise from any event, fact, development or circumstance that occurred (A) prior to September 1, 2021 and (B) on or after September 1, 2021; and

g.    Section 9.02(b) of the Merger Agreement is hereby amended and restated in its entirety as follows:

“(i)    Seller shall not have any liability under Section 9.02(a)(ii)(A) or Section 7.11(f) for Losses (A) for any individual claim (together with all other claims, if any, arising out of substantially similar facts, events and circumstances) less than $75,000 (the “De Minimis Amount”) and (B) unless and until the aggregate amount of the indemnifiable Losses (excluding any claims that are not indemnifiable pursuant to Section 9.02(b)(i)(A)) exceeds $9,600,000 and then only for Losses in excess of such amount (the “Deductible”);

(ii)    Seller shall not have any liability under Section 9.02(a)(ii)(B) for Losses (A) for any individual claim (together with all other claims, if any, arising out of substantially similar facts, events and circumstances) less than the De Minimis Amount and (ii) unless and until the aggregate amount of the indemnifiable Losses (excluding any claims that are not indemnifiable pursuant to Section 9.02(b)(ii)(A)) exceeds $9,600,000 (less the amount of any indemnifiable Losses applied towards the Deductible contemplated in Section 9.02(b)(i)(B)) and then only for Losses in excess of such amount; provided that, if the September 1 Condition is satisfied, in no event will the aggregate indemnification obligations of Seller pursuant to Section 9.02(a)(ii)(B) for Losses actually suffered by the Purchaser Indemnified Parties exceed the September-Closing Indemnity Cap for any failure, breach, inaccuracy or violation of any of the representations or warranties made by Seller or Bank in Article IV or V (other than the Bank and Seller Fundamental Representations and the representations and warranties in Section 5.15(b)) that occur on or after September 1, 2021 (or to the extent continuing on or after September 1, 2021); and

(iii)    In no event will the aggregate indemnification obligation of Seller pursuant to Section 9.02(a)(ii) (in the aggregate) exceed $72,000,000 (the “Indemnity Cap”). Notwithstanding the foregoing, in no event will the aggregate

4

indemnification obligation of Seller pursuant to Section 9.02(a) exceed the Final Purchase Price.”

h.    Exhibit A (Accounting Guidelines) of the Merger Agreement is hereby amended as set forth on Schedule A hereto.

3.Acknowledgement. As of the date hereof, to the Knowledge of Purchaser, Purchaser is not aware of any event, fact, occurrence, circumstance or development (individually or in the aggregate) that would result in the conditions set forth in Section 8.01 and Section 8.02 of the Merger Agreement not being satisfied in accordance with the Merger Agreement.

4.No Other Amendments to Purchase Agreement.

a.On and after the date hereof, each reference in the Merger Agreement to “this Agreement”, “herein”, “hereof”, “hereunder” or words of similar import shall mean and be a reference to the Merger Agreement as amended hereby; provided that the foregoing shall not alter in any way references in the Merger Agreement to “date of this Agreement”, “date hereof” or words of similar import.

b.Except as otherwise expressly provided herein, all of the terms and conditions of the Merger Agreement remain unchanged and continue in full force and effect.

5.Miscellaneous. The provisions of Article XI of the Merger Agreement are incorporated into, and shall apply to, this Amendment, mutatis mutandis.

[Remainder of page intentionally left blank; signature page follows]

5

    IN WITNESS WHEREOF, the Parties have caused this Amendment No. 1 to be duly executed as of the day and year first above written.

CMS ENERGY CORPORATION

By: /s/Garrick Rochow

Name:    Garrick Rochow

Title:    President and

    Chief Executive Officer

[Signature Page – Amendment No. 1 to Agreement and Plan of Merger]

ENERBANK USA

By: /s/Charles Knadler

Name:    Charles Knadler

Title:    President and

    Chief Executive Officer

[Signature Page – Amendment No. 1 to Agreement and Plan of Merger]

REGIONS BANK

By: /s/John M. Turner, Jr.

Name    John M. Turner, Jr.

Title:     President and Chief Executive

Officer

[Signature Page – Amendment No. 1 to Agreement and Plan of Merger]

Schedule A

1.Exhibit A (Accounting Guidelines) of the Merger Agreement is hereby amended to include the following as paragraph 11:

“Forgone Budgeted Loan Sales.

(a)    Definitions. For purposes of this paragraph 11:

“Actual Loan Sales” means the aggregate principal balance of all Loans sold by Bank to any Third Party between (and including) January 1, 2021 and the Measurement Time; provided that, if a Quarterly Loan Sale has not been consummated prior to the Measurement Time in the Quarter in which the Closing occurs, the foregoing amount shall be increased by $75,000,000.

“Budgeted Loan Sales” means, if the Closing occurs in (i) September 2021, $525,000,000; (ii) October 2021, $525,000,000; (iii) November 2021, $525,000,000; or (iv) December 2021, $600,000,000.

“Loan Sale Adjustment Amount” means an amount (which may be positive, negative or zero) equal to the lesser of (i) $125,000,000 and (ii) (A) Budgeted Loan Sales minus (ii) Actual Loan Sales.

(b)    Statement Adjustment.

(i)    If the Loan Sale Adjustment Amount is a positive amount:

A.    “Loans” (asset) shall be increased by the product of (x) the Loan Sale Adjustment Amount multiplied by (y) 2.6%; and

B.    “Allowance for loan losses” shall be decreased by the product of (x) the Loan Sale Adjustment Amount multiplied by (y) 3%.

(ii)    If the Loan Sale Adjustment Amount is zero or a negative amount, no adjustment to the Statements shall be made pursuant to this paragraph 11.”

It is understood and agreed that (x) the Reference Statement does not reflect the addition of new paragraph 11, as the Reference Statement was prepared prior to the foregoing amendment to Exhibit A (Accounting Guidelines) of the Merger Agreement, and (y) the omission of the impact of new paragraph 11 on the Reference Statement shall in no way prevent or limit new paragraph 11 from being applied to (and its effects being reflected in) any Statement (as defined in the Accounting Guidelines).

2.    Paragraph 1(a) of Exhibit A (Accounting Guidelines) of the Merger Agreement is hereby amended and restated as follows:

A-1

“the specific accounting and tax policies, principles, practices, procedures, categorizations, definitions, recognition bases, methods and estimation techniques (including in respect of management judgment) set forth below in paragraphs 2 through 11 of this Exhibit A (the “Specific Policies”);”

[Remainder of page intentionally left blank]

A-2

EX-31.1

Exhibit 31.1

Certification of Garrick J. Rochow

I, Garrick J. Rochow, certify that:

1.I have reviewed this quarterly report on Form 10-Q of CMS Energy Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a‑15(e) and 15d‑15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a‑15(f) and 15d‑15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: October 28, 2021	By:	/s/ Garrick J. Rochow
		Garrick J. Rochow
		President and Chief Executive Officer

EX-31.2

Exhibit 31.2

Certification of Rejji P. Hayes

I, Rejji P. Hayes, certify that:

1.I have reviewed this quarterly report on Form 10-Q of CMS Energy Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a‑15(e) and 15d‑15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a‑15(f) and 15d‑15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: October 28, 2021	By:	/s/ Rejji P. Hayes
		Rejji P. Hayes
		Executive Vice President and Chief Financial Officer

EX-31.3

Exhibit 31.3

Certification of Garrick J. Rochow

I, Garrick J. Rochow, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Consumers Energy Company;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a‑15(e) and 15d‑15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a‑15(f) and 15d‑15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: October 28, 2021	By:	/s/ Garrick J. Rochow
		Garrick J. Rochow
		President and Chief Executive Officer

EX-31.4

Exhibit 31.4

Certification of Rejji P. Hayes

I, Rejji P. Hayes, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Consumers Energy Company;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a‑15(e) and 15d‑15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a‑15(f) and 15d‑15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: October 28, 2021	By:	/s/ Rejji P. Hayes
		Rejji P. Hayes
		Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification of CEO and CFO Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q of CMS Energy Corporation (the “Company”) for the quarterly period endedSeptember 30, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Garrick J. Rochow, as President and Chief Executive Officer of the Company, and Rejji P. Hayes, as Executive Vice President and Chief Financial Officer of the Company, each hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Garrick J. Rochow
Name:	Garrick J. Rochow
Title:	President and Chief Executive Officer
Date:	October 28, 2021
/s/ Rejji P. Hayes
Name:	Rejji P. Hayes
Title:	Executive Vice President and Chief Financial Officer
Date:	October 28, 2021

EX-32.2

Exhibit 32.2

Certification of CEO and CFO Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q of Consumers Energy Company (the “Company”) for the quarterly period endedSeptember 30, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Garrick J. Rochow, as President and Chief Executive Officer of the Company, and Rejji P. Hayes, as Executive Vice President and Chief Financial Officer of the Company, each hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Garrick J. Rochow
Name:	Garrick J. Rochow
Title:	President andChief Executive Officer
Date:	October 28, 2021
/s/ Rejji P. Hayes
Name:	Rejji P. Hayes
Title:	Executive Vice President and Chief Financial Officer
Date:	October 28, 2021

XML

Cover page - shares	9 Months Ended
	Sep. 30, 2021	Oct. 11, 2021
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	1-9513
Entity Registrant Name	CMS ENERGY CORPORATION
Entity Tax Identification Number	38-2726431
Entity Incorporation, State or Country Code	MI
Entity Address, Address Line One	One Energy Plaza
Entity Address, City or Town	Jackson
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	49201
City Area Code	517
Local Phone Number	788‑0550
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		289,697,389
Entity Central Index Key	0000811156
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Consumers Energy Company
Document Information [Line Items]
Entity File Number	1-5611
Entity Registrant Name	CONSUMERS ENERGY COMPANY
Entity Tax Identification Number	38-0442310
Entity Incorporation, State or Country Code	MI
Entity Address, Address Line One	One Energy Plaza
Entity Address, City or Town	Jackson
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	49201
City Area Code	517
Local Phone Number	788‑0550
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		84,108,789
Entity Central Index Key	0000201533
CMS Energy Corporation Common Stock, $0.01 par value
Document Information [Line Items]
Title of 12(b) Security	CMS Energy Corporation Common Stock
Trading Symbol	CMS
Security Exchange Name	NYSE
CMS Energy Corporation 5.625% Junior Subordinated Notes due 2078
Document Information [Line Items]
Title of 12(b) Security	CMS Energy Corporation 5.625% Junior Subordinated Notes due 2078
Trading Symbol	CMSA
Security Exchange Name	NYSE
CMS Energy Corporation 5.875% Junior Subordinated Notes due 2078
Document Information [Line Items]
Title of 12(b) Security	CMS Energy Corporation 5.875% Junior Subordinated Notes due 2078
Trading Symbol	CMSC
Security Exchange Name	NYSE
CMS Energy Corporation 5.875% Junior Subordinated Notes due 2079
Document Information [Line Items]
Title of 12(b) Security	CMS Energy Corporation 5.875% Junior Subordinated Notes due 2079
Trading Symbol	CMSD
Security Exchange Name	NYSE
CMS Energy Corporation Depositary Shares, each representing a 1/1,000th interest in a share of 4.200% Cumulative Redeemable Perpetual Preferred Stock, Series C
Document Information [Line Items]
Title of 12(b) Security	CMS Energy Corporation Depositary Shares
Trading Symbol	CMS PRC
Security Exchange Name	NYSE
Consumers Energy Company Cumulative Preferred Stock, $100 par value: $4.50 Series
Document Information [Line Items]
Title of 12(b) Security	Consumers Energy Company Cumulative Preferred Stock, $100 par value: $4.50 Series
Trading Symbol	CMS-PB
Security Exchange Name	NYSE

XML

Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating Revenue	$ 1,725	$ 1,507	$ 5,296	$ 4,691
Operating Expenses
Fuel for electric generation	184	108	438	274
Purchased power – related parties	21	13	56	45
Maintenance and other operating expenses	410	281	1,076	885
Depreciation and amortization	250	226	832	763
General taxes	81	74	290	262
Total operating expenses	1,465	1,167	4,354	3,768
Operating Income	260	340	942	923
Other Income (Expense)
Interest income	0	1	2	3
Interest and dividend income – related parties	0	0	0	7
Allowance for equity funds used during construction	2	1	5	4
Income from equity method investees	4	0	8	1
Non-operating retirement benefits, net	40	29	121	90
Other income	1	1	7	3
Other expense	(3)	(4)	(7)	(9)
Total other income	44	28	136	99
Interest Charges
Interest on long-term debt	120	124	359	361
Interest expense – related parties	3	3	9	9
Other interest expense	3	4	8	10
Allowance for borrowed funds used during construction	(1)	(1)	(2)	(2)
Total interest charges	125	130	374	378
Income Before Income Taxes	179	238	704	644
Income Tax Expense	26	40	90	88
Income From Continuing Operations	153	198	614	556
Income From Discontinued Operations, Net of Tax of $9, $4, $25, and $10	30	12	82	34
Net Income	183	210	696	590
Loss Attributable to Noncontrolling Interests	(6)	(8)	(18)	(7)
Net Income attributable to CMS Energy	189	218	714	597
Preferred Stock Dividends	3	0	3	0
Net Income Available to Common Stockholders	$ 186	$ 218	$ 711	$ 597
Basic earnings per average common share, income from continuing operations per average common share available to common stockholders (in dollars per share)	$ 0.54	$ 0.72	$ 2.18	$ 1.98
Basic earnings per average common share, income from discontinued operations per average common share available to common stockholders (in dollars per share)	0.10	0.04	0.28	0.12
Basic earnings per average common share (in dollars per share)	0.64	0.76	2.46	2.10
Diluted earnings per average common share, income from continuing operations per average common share available to common stockholders (in dollars per share)	0.54	0.72	2.18	1.97
Diluted earnings per average common share, income from discontinued operations per average common share available to common stockholders (in dollars per share)	0.10	0.04	0.28	0.12
Diluted earnings per average common share (in dollars per share)	$ 0.64	$ 0.76	$ 2.46	$ 2.09
Consumers Energy Company
Operating Revenue	$ 1,644	$ 1,450	$ 5,074	$ 4,524
Operating Expenses
Fuel for electric generation	147	85	340	207
Purchased and interchange power	450	420	1,200	1,121
Purchased power – related parties	21	13	56	45
Cost of gas sold	53	33	425	383
Maintenance and other operating expenses	390	266	1,021	846
Depreciation and amortization	241	223	804	753
General taxes	77	72	277	256
Total operating expenses	1,379	1,112	4,123	3,611
Operating Income	265	338	951	913
Other Income (Expense)
Interest income	1	1	2	3
Interest and dividend income – related parties	1	2	4	4
Allowance for equity funds used during construction	2	1	5	4
Non-operating retirement benefits, net	37	28	113	85
Other income	1	1	7	3
Other expense	(3)	(4)	(7)	(9)
Total other income	39	29	124	90
Interest Charges
Interest on long-term debt	74	76	220	227
Interest expense – related parties	3	3	9	9
Other interest expense	2	4	6	9
Allowance for borrowed funds used during construction	(1)	(1)	(2)	(2)
Total interest charges	78	82	233	243
Income Before Income Taxes	226	285	842	760
Income Tax Expense	40	55	130	135
Net Income	186	230	712	625
Net Income attributable to CMS Energy	186	230	712	625
Preferred Stock Dividends	0	0	1	1
Net Income Available to Common Stockholders	186	230	711	624
Purchased and interchange power
Operating Expenses
Cost of goods and services sold	462	430	1,230	1,149
Cost of gas sold
Operating Expenses
Cost of goods and services sold	$ 57	$ 35	$ 432	$ 390

XML

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net Income	$ 183	$ 210	$ 696	$ 590
Retirement Benefits Liability
Net loss arising during the period, net of tax	0	(5)	0	(5)
Settlement arising during the period, net of tax	0	1	0	1
Amortization of net actuarial loss, net of tax	1	1	5	3
Amortization of prior service credit	0	0	(1)	(1)
Derivatives
Unrealized gain (loss) on derivative instruments, net of tax of $—, $—, $—, and $(1)	0	(1)	1	(5)
Reclassification adjustments included in net income, net of tax of $—, $—, $1, and $—	0	1	0	1
Other Comprehensive Income (Loss)	1	(3)	5	(6)
Comprehensive Income	184	207	701	584
Comprehensive Loss Attributable to Noncontrolling Interests	(6)	(8)	(18)	(7)
Comprehensive Income Attributable to CMS Energy	190	215	719	591
Consumers Energy Company
Net Income	186	230	712	625
Retirement Benefits Liability
Amortization of net actuarial loss, net of tax	1	1	2	1
Derivatives
Other Comprehensive Income (Loss)	1	1	2	1
Comprehensive Income	$ 187	$ 231	$ 714	$ 626

XML

Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net gain arising during the period, TAX	$ 0	$ (2)	$ 0	$ (2)
Settlement arising during the period, TAX	0	0	0	0
Amortization of net actuarial loss, TAX	0	0	1	1
Amortization of prior service credit, TAX	0	0	0	0
Unrealized loss on derivative instruments, TAX	0	0	0	(1)
Reclassification adjustments included in net income , TAX	0	0	1	0
Consumers Energy Company
Amortization of net actuarial loss, TAX	$ 0	$ 0	$ 0	$ 1

XML

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities
Net Income	$ 696	$ 590
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	832	763
Deferred income taxes and investment tax credits	110	140
Other non‑cash operating activities and reconciling adjustments	(71)	(22)
Pension contributions	0	(531)
Net cash provided by (used in) discontinued operations	(111)	35
Changes in assets and liabilities
Accounts receivable and accrued revenue	129	221
Inventories	(185)	(34)
Accounts payable and accrued rate refunds	84	30
Other current assets and liabilities	(30)	(91)
Other non‑current assets and liabilities	29	43
Net cash provided by operating activities	1,483	1,144
Cash Flows from Investing Activities
Capital expenditures (excludes assets placed under finance lease)	(1,442)	(1,693)
Net cash provided by (used in) discontinued operations	78	(505)
Cost to retire property and other investing activities	(96)	(100)
Net cash used in investing activities	(1,460)	(2,298)
Cash Flows from Financing Activities
Proceeds from issuance of debt	300	2,353
Retirement of debt	(18)	(1,294)
Decrease in notes payable	0	(90)
Issuance of common stock, net of issuance costs	23	107
Issuance of preferred stock, net of issuance costs	224	0
Payment of dividends on common and preferred stock	(380)	(351)
Proceeds from the sale of membership interest in VIE to tax equity investor	0	417
Contribution from noncontrolling interest	1	31
Net cash provided by (used in) discontinued operations	(84)	456
Other financing costs	(38)	(74)
Net cash provided by financing activities	28	1,555
Net Increase in Cash and Cash Equivalents, Including Restricted Amounts	51	401
Cash and Cash Equivalents, Including Restricted Amounts, Beginning of Period	185	157
Cash and Cash Equivalents, Including Restricted Amounts, End of Period	236	558
Non‑cash transactions
Capital expenditures not paid	172	140
Consumers Energy Company
Cash Flows from Operating Activities
Net Income	712	625
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	804	753
Deferred income taxes and investment tax credits	129	136
Other non‑cash operating activities and reconciling adjustments	(65)	(21)
Pension contributions	0	(518)
Changes in assets and liabilities
Accounts receivable and accrued revenue	137	190
Inventories	(186)	(34)
Accounts payable and accrued rate refunds	60	29
Other current assets and liabilities	(24)	(103)
Other non‑current assets and liabilities	16	28
Net cash provided by operating activities	1,583	1,085
Cash Flows from Investing Activities
Capital expenditures (excludes assets placed under finance lease)	(1,433)	(1,595)
Cost to retire property and other investing activities	(86)	(105)
Net cash used in investing activities	(1,519)	(1,700)
Cash Flows from Financing Activities
Proceeds from issuance of debt	300	1,528
Retirement of debt	(13)	(773)
Decrease in notes payable	0	(90)
Decrease in notes payable – related parties	(307)	0
Stockholder contribution	575	650
Payment of dividends on common and preferred stock	(571)	(450)
Other financing costs	(28)	(55)
Net cash provided by financing activities	(44)	810
Net Increase in Cash and Cash Equivalents, Including Restricted Amounts	20	195
Cash and Cash Equivalents, Including Restricted Amounts, Beginning of Period	35	28
Cash and Cash Equivalents, Including Restricted Amounts, End of Period	55	223
Non‑cash transactions
Capital expenditures not paid	$ 168	$ 156

XML

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current Assets
Cash and cash equivalents	$ 102	$ 32
Restricted cash and cash equivalents	30	17
Accounts receivable and accrued revenue	713	853
Accounts receivable – related parties	17	19
Accrued gas revenue	5	0
Inventories at average cost
Gas in underground storage	556	353
Materials and supplies	173	155
Generating plant fuel stock	31	68
Deferred property taxes	215	332
Regulatory assets	11	42
Assets held for sale	494	429
Prepayments and other current assets	130	104
Total current assets	2,477	2,404
Plant, Property, and Equipment
Plant, property, and equipment, gross	29,450	27,870
Less accumulated depreciation and amortization	8,489	7,938
Plant, property, and equipment, net	20,961	19,932
Construction work in progress	973	1,085
Total plant, property, and equipment	21,934	21,017
Other Non‑current Assets
Regulatory assets	2,588	2,653
Accounts receivable	18	19
Investments	73	70
Assets held for sale	2,606	2,680
Other	817	823
Total other non‑current assets	6,102	6,245
Total Assets	30,513	29,666
Current Liabilities
Current portion of long-term debt, finance leases, and other financing	585	591
Accounts payable	787	661
Accounts payable – related parties	8	7
Accrued rate refunds	9	20
Accrued interest	112	104
Accrued taxes	146	454
Regulatory liabilities	191	151
Liabilities held for sale	1,233	953
Other current liabilities	183	133
Total current liabilities	3,254	3,074
Non‑current Liabilities
Long-term debt	12,027	11,744
Non-current portion of finance leases and other financing	48	56
Regulatory liabilities	3,758	3,744
Postretirement benefits	147	152
Asset retirement obligations	599	553
Deferred investment tax credit	113	115
Deferred income taxes	2,014	1,863
Liabilities held for sale	1,523	1,894
Other non‑current liabilities	377	394
Total non‑current liabilities	20,606	20,515
Commitments and Contingencies
Common stockholders’ equity
Common stock	3	3
Other paid-in capital	5,397	5,365
Accumulated other comprehensive loss	(81)	(86)
Retained earnings	547	214
Total common stockholders’ equity	5,866	5,496
Cumulative preferred stock	224	0
Total stockholders’ equity	6,090	5,496
Noncontrolling interests	563	581
Total equity	6,653	6,077
Total Liabilities and Equity	30,513	29,666
Consumers Energy Company
Current Assets
Cash and cash equivalents	29	20
Restricted cash and cash equivalents	26	15
Accounts receivable and accrued revenue	683	828
Accounts receivable – related parties	8	18
Accrued gas revenue	5	0
Inventories at average cost
Gas in underground storage	556	353
Materials and supplies	168	149
Generating plant fuel stock	31	67
Deferred property taxes	215	332
Regulatory assets	11	42
Prepayments and other current assets	112	68
Total current assets	1,844	1,892
Plant, Property, and Equipment
Plant, property, and equipment, gross	28,331	26,757
Less accumulated depreciation and amortization	8,367	7,844
Plant, property, and equipment, net	19,964	18,913
Construction work in progress	930	1,058
Total plant, property, and equipment	20,894	19,971
Other Non‑current Assets
Regulatory assets	2,588	2,653
Accounts receivable	24	25
Accounts and notes receivable – related parties	103	105
Other	736	753
Total other non‑current assets	3,451	3,536
Total Assets	26,189	25,399
Current Liabilities
Current portion of long-term debt, finance leases, and other financing	377	384
Notes payable – related parties	0	307
Accounts payable	745	636
Accounts payable – related parties	13	7
Accrued rate refunds	9	20
Accrued interest	80	72
Accrued taxes	158	458
Regulatory liabilities	191	151
Other current liabilities	128	104
Total current liabilities	1,701	2,139
Non‑current Liabilities
Long-term debt	8,028	7,742
Non-current portion of finance leases and other financing	48	56
Regulatory liabilities	3,758	3,744
Postretirement benefits	108	112
Asset retirement obligations	576	530
Deferred investment tax credit	113	115
Deferred income taxes	2,265	2,094
Other non‑current liabilities	318	311
Total non‑current liabilities	15,214	14,704
Commitments and Contingencies
Common stockholders’ equity
Common stock	841	841
Other paid-in capital	6,599	6,024
Accumulated other comprehensive loss	(34)	(36)
Retained earnings	1,831	1,690
Total common stockholders’ equity	9,237	8,519
Cumulative preferred stock	37	37
Total stockholders’ equity	9,274	8,556
Total equity	9,274	8,556
Total Liabilities and Equity	$ 26,189	$ 25,399

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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Accounts receivable and accrued revenue, ALLOWANCE	$ 24	$ 29
Common stock authorized (in shares)	350,000,000.0	350,000,000.0
Common stock outstanding (in shares)	289,700,000	288,900,000
Preferred stock authorized (in shares)	9,200,000
Preferred stock outstanding (in shares)	9,200,000
Consumers Energy Company
Accounts receivable and accrued revenue, ALLOWANCE	$ 24	$ 29
Common stock authorized (in shares)	125,000,000.0	125,000,000.0
Common stock outstanding (in shares)	84,100,000	84,100,000
Preferred stock authorized (in shares)	7,500,000	7,500,000
Preferred stock outstanding (in shares)	400,000	400,000

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Consolidated Statements of Changes In Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Other Paid-in Capital	Accumulated Other Comprehensive Loss	Retirement benefits liability	Derivative instruments	Retained Earnings (Accumulated Deficit)	Retained Earnings (Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjustment	Cumulative Preferred Stock	Noncontrolling Interests	Consumers Energy Company	Consumers Energy Company Common Stock	Consumers Energy Company Other Paid-in Capital	Consumers Energy Company Accumulated Other Comprehensive Loss	Consumers Energy Company Retirement benefits liability	Consumers Energy Company Retained Earnings (Accumulated Deficit)	Consumers Energy Company Cumulative Preferred Stock
Total Equity at Beginning of Period at Dec. 31, 2019	$ 5,055	$ 3	$ 5,113	$ (73)	$ (69)	$ (4)	$ (25)	$ (51)	$ 0	$ 37	$ 7,737	$ 841	$ 5,374	$ (28)	$ (28)	$ 1,513	$ 37
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued			125						0
Common stock repurchased			(13)
Stockholder contribution													650
Net loss arising during the period, net of tax	(5)				(5)
Settlement arising during the period, net of tax	1				1
Amortization of net actuarial loss	3				3						1				1
Amortization of prior service credit	(1)				(1)
Unrealized gain (loss) on derivative instruments	(5)					(5)
Reclassification adjustments included in net income	1					1
Net Income	590						597			(7)	625					625
Dividends declared on common stock							(350)									(449)
Dividends declared on preferred stock							0									(1)
Impact of purchase and consolidation of VIE										101
Sale of membership interest in VIE to tax equity investor										417
Contribution from noncontrolling interest										31
Distributions and other changes in noncontrolling interests										(1)
Total Equity at End of Period at Sep. 30, 2020	$ 5,898	3	5,225	(79)	(71)	(8)	171		0	578	8,563	841	6,024	(27)	(27)	1,688	37
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in dollars per share)	$ 1.2225
Dividends declared per preferred stock Series C depositary share (in dollars per share)	$ 0
Total Equity at Beginning of Period at Jun. 30, 2020	$ 5,251	3	5,217	(76)	(68)	(8)	70	0	0	37	8,505	841	6,024	(28)	(28)	1,631	37
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued			8						0
Common stock repurchased			0
Stockholder contribution													0
Net loss arising during the period, net of tax	(5)				(5)
Settlement arising during the period, net of tax	1				1
Amortization of net actuarial loss	1				1						1				1
Amortization of prior service credit	0				0
Unrealized gain (loss) on derivative instruments	(1)					(1)
Reclassification adjustments included in net income	1					1
Net Income	210						218			(8)	230					230
Dividends declared on common stock							(117)									(173)
Dividends declared on preferred stock							0									0
Impact of purchase and consolidation of VIE										101
Sale of membership interest in VIE to tax equity investor										417
Contribution from noncontrolling interest										31
Distributions and other changes in noncontrolling interests										0
Total Equity at End of Period at Sep. 30, 2020	$ 5,898	3	5,225	(79)	(71)	(8)	171		0	578	8,563	841	6,024	(27)	(27)	1,688	37
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in dollars per share)	$ 0.4075
Dividends declared per preferred stock Series C depositary share (in dollars per share)	$ 0
Total Equity at Beginning of Period at Dec. 31, 2020	$ 6,077	3	5,365	(86)	(80)	(6)	214	0	0	581	8,556	841	6,024	(36)	(36)	1,690	37
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued			41						224
Common stock repurchased			(9)
Stockholder contribution													575
Net loss arising during the period, net of tax	0				0
Settlement arising during the period, net of tax	0				0
Amortization of net actuarial loss	5				5						2				2
Amortization of prior service credit	(1)				(1)
Unrealized gain (loss) on derivative instruments	1					1
Reclassification adjustments included in net income	0					0
Net Income	696						714			(18)	712					712
Dividends declared on common stock							(378)									(570)
Dividends declared on preferred stock							(3)									(1)
Impact of purchase and consolidation of VIE										0
Sale of membership interest in VIE to tax equity investor										0
Contribution from noncontrolling interest										1
Distributions and other changes in noncontrolling interests										(1)
Total Equity at End of Period at Sep. 30, 2021	$ 6,653	3	5,397	(81)	(76)	(5)	547		224	563	9,274	841	6,599	(34)	(34)	1,831	37
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in dollars per share)	$ 1.3050
Dividends declared per preferred stock Series C depositary share (in dollars per share)	$ 0.3063
Total Equity at Beginning of Period at Jun. 30, 2021	$ 6,366	3	5,389	(82)	(77)	(5)	487	$ 0	0	569	8,977	841	6,299	(35)	(35)	1,835	37
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued			8						224
Common stock repurchased			0
Stockholder contribution													300
Net loss arising during the period, net of tax	0				0
Settlement arising during the period, net of tax	0				0
Amortization of net actuarial loss	1				1						1				1
Amortization of prior service credit	0				0
Unrealized gain (loss) on derivative instruments	0					0
Reclassification adjustments included in net income	0					0
Net Income	183						189			(6)	186					186
Dividends declared on common stock							(126)									(190)
Dividends declared on preferred stock							(3)									0
Impact of purchase and consolidation of VIE										0
Sale of membership interest in VIE to tax equity investor										0
Contribution from noncontrolling interest										0
Distributions and other changes in noncontrolling interests										0
Total Equity at End of Period at Sep. 30, 2021	$ 6,653	$ 3	$ 5,397	$ (81)	$ (76)	$ (5)	$ 547		$ 224	$ 563	$ 9,274	$ 841	$ 6,599	$ (34)	$ (34)	$ 1,831	$ 37
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in dollars per share)	$ 0.4350
Dividends declared per preferred stock Series C depositary share (in dollars per share)	$ 0.3063

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Consolidated Statements of Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Tax effect of discontinued operation	$ 9	$ 4	$ 25	$ 10

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Regulatory Matters

9 Months Ended

Sep. 30, 2021

Public Utilities, General Disclosures [Line Items]

Regulatory Matters

Regulatory Matters

Regulatory matters are critical to Consumers. The Michigan Attorney General, ABATE, the MPSC Staff, and certain other parties typically participate in MPSC proceedings concerning Consumers, such as Consumers’ rate cases and PSCR and GCR processes. These parties often challenge various aspects of those proceedings, including the prudence of Consumers’ policies and practices, and seek cost disallowances and other relief. The parties also have appealed significant MPSC orders. Depending upon the specific issues, the outcomes of rate cases and proceedings, including judicial proceedings challenging MPSC orders or other actions, could negatively affect CMS Energy’s and Consumers’ liquidity, financial condition, and results of operations. Consumers cannot predict the outcome of these proceedings.

There are multiple appeals pending that involve various issues concerning cost recovery from customers, the MPSC’s authority to approve voluntary revenue refunds, and other matters. Consumers is unable to predict the outcome of these appeals.

Electric Rate Case: In June 2021, the MPSC Staff filed testimony in the general electric rate case that Consumers filed in March 2021. In its testimony, the MPSC Staff recommended the disallowance of cost recovery for certain categories of recently completed capital expenditures incurred by Consumers. In October 2021, the administrative law judge issued a proposal for decision supporting the MPSC Staff’s recommended disallowance. At September 30, 2021, Consumers had incurred $39 million of such expenditures. A material disallowance of incurred capital costs could negatively affect CMS Energy’s and

Consumers’ results of operations. Consumers cannot predict the outcome of this proceeding. The MPSC is expected to issue a final order in December 2021.

Reserve for Customer Refunds: In December 2020, the MPSC issued an order authorizing Consumers to refund $28 million voluntarily to utility customers. In May 2021, the MPSC approved a filing submitted by Consumers that proposed the refund take the form of incremental spending in 2021 above amounts included in rates on various programs, including electric service restoration and gas and electric technology expenses. If Consumers does not achieve the incremental spending, the remaining balance will be provided to electric or gas utility customers through a bill credit. Consumers had recorded a current regulatory liability of $8 million at September 30, 2021 and $28 million at December 31, 2020 related to this voluntary refund.

Voluntary Transmission Asset Sale Gain Share: In October 2020, Consumers completed a sale of the electric utility’s remaining transmission equipment to METC. In December 2020, Consumers filed an application with the MPSC requesting approval to share voluntarily half of the gain from the sale with electric utility customers through incremental service restoration spending in 2021; this application was approved by the MPSC in February 2021. As a result, the $14 million gain was recorded on Consumers’ consolidated balance sheets as a current regulatory liability at December 31, 2020 and was shared with customers in 2021.

Energy Waste Reduction Plan Incentive: Consumers filed its 2020 energy waste reduction reconciliation in May 2021, requesting the MPSC’s approval to collect from customers the maximum performance incentive of $42 million for exceeding statutory savings targets in 2020. Consumers recognized incentive revenue under this program of $42 million in 2020.

Consumers Energy Company

Public Utilities, General Disclosures [Line Items]

Regulatory Matters

Regulatory Matters

Regulatory matters are critical to Consumers. The Michigan Attorney General, ABATE, the MPSC Staff, and certain other parties typically participate in MPSC proceedings concerning Consumers, such as Consumers’ rate cases and PSCR and GCR processes. These parties often challenge various aspects of those proceedings, including the prudence of Consumers’ policies and practices, and seek cost disallowances and other relief. The parties also have appealed significant MPSC orders. Depending upon the specific issues, the outcomes of rate cases and proceedings, including judicial proceedings challenging MPSC orders or other actions, could negatively affect CMS Energy’s and Consumers’ liquidity, financial condition, and results of operations. Consumers cannot predict the outcome of these proceedings.

There are multiple appeals pending that involve various issues concerning cost recovery from customers, the MPSC’s authority to approve voluntary revenue refunds, and other matters. Consumers is unable to predict the outcome of these appeals.

Electric Rate Case: In June 2021, the MPSC Staff filed testimony in the general electric rate case that Consumers filed in March 2021. In its testimony, the MPSC Staff recommended the disallowance of cost recovery for certain categories of recently completed capital expenditures incurred by Consumers. In October 2021, the administrative law judge issued a proposal for decision supporting the MPSC Staff’s recommended disallowance. At September 30, 2021, Consumers had incurred $39 million of such expenditures. A material disallowance of incurred capital costs could negatively affect CMS Energy’s and

Consumers’ results of operations. Consumers cannot predict the outcome of this proceeding. The MPSC is expected to issue a final order in December 2021.

Reserve for Customer Refunds: In December 2020, the MPSC issued an order authorizing Consumers to refund $28 million voluntarily to utility customers. In May 2021, the MPSC approved a filing submitted by Consumers that proposed the refund take the form of incremental spending in 2021 above amounts included in rates on various programs, including electric service restoration and gas and electric technology expenses. If Consumers does not achieve the incremental spending, the remaining balance will be provided to electric or gas utility customers through a bill credit. Consumers had recorded a current regulatory liability of $8 million at September 30, 2021 and $28 million at December 31, 2020 related to this voluntary refund.

Voluntary Transmission Asset Sale Gain Share: In October 2020, Consumers completed a sale of the electric utility’s remaining transmission equipment to METC. In December 2020, Consumers filed an application with the MPSC requesting approval to share voluntarily half of the gain from the sale with electric utility customers through incremental service restoration spending in 2021; this application was approved by the MPSC in February 2021. As a result, the $14 million gain was recorded on Consumers’ consolidated balance sheets as a current regulatory liability at December 31, 2020 and was shared with customers in 2021.

Energy Waste Reduction Plan Incentive: Consumers filed its 2020 energy waste reduction reconciliation in May 2021, requesting the MPSC’s approval to collect from customers the maximum performance incentive of $42 million for exceeding statutory savings targets in 2020. Consumers recognized incentive revenue under this program of $42 million in 2020.

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Contingencies and Commitments

9 Months Ended

Sep. 30, 2021

Other Commitments [Line Items]

Contingencies and Commitments

Contingencies and Commitments

CMS Energy and Consumers are involved in various matters that give rise to contingent liabilities. Depending on the specific issues, the resolution of these contingencies could negatively affect CMS Energy’s and Consumers’ liquidity, financial condition, and results of operations. In their disclosures of these matters, CMS Energy and Consumers provide an estimate of the possible loss or range of loss when such an estimate can be made. Disclosures that state that CMS Energy or Consumers cannot predict the outcome of a matter indicate that they are unable to estimate a possible loss or range of loss for the matter.

CMS Energy Contingencies

Bay Harbor: CMS Land retained environmental remediation obligations for the collection and treatment of leachate at Bay Harbor after selling its interests in the development in 2002. Leachate is produced when water enters into cement kiln dust piles left over from former cement plant operations at the site. In 2012, CMS Land and EGLE finalized an agreement that established the final remedies and the future water quality criteria at the site. CMS Land completed all construction necessary to implement the remedies required by the agreement and will continue to maintain and operate a system to discharge treated leachate into Little Traverse Bay under an NPDES permit, which was valid through September 2020. CMS Land submitted a renewal request for the permit in April 2020. CMS Land is allowed to continue operating under the previous NPDES permit until a response is received from EGLE.

At September 30, 2021, CMS Energy had a recorded liability of $44 million for its remaining obligations for environmental remediation. CMS Energy calculated this liability based on discounted projected costs, using a discount rate of 4.34 percent and an inflation rate of one percent on annual operating and maintenance costs. The undiscounted amount of the remaining obligation is $54 million. CMS Energy

expects to pay the following amounts for long-term leachate disposal and operating and maintenance costs during the remainder of 2021 and in each of the next five years:

In Millions
	2021			2022			2023			2024			2025			2026
CMS Energy
Long-term leachate disposal and operating and maintenance costs		$	1		$	4		$	4		$	4		$	4		$	4

CMS Energy’s estimate of response activity costs and the timing of expenditures could change if there are changes in circumstances or assumptions used in calculating the liability. Although a liability for its present estimate of remaining response activity costs has been recorded, CMS Energy cannot predict the ultimate financial impact or outcome of this matter.

Equatorial Guinea Tax Claim: In 2002, CMS Energy sold its oil, gas, and methanol investments in Equatorial Guinea. The government of Equatorial Guinea claims that, in connection with the sale, CMS Energy owes $152 million in taxes, plus substantial penalties and interest that could be up to or exceed the amount of the taxes claimed. In 2015, the matter was proceeding to formal arbitration; however, since then, the government of Equatorial Guinea has stopped communicating. CMS Energy has concluded that the government’s tax claim is without merit and believes the likelihood of material loss to be remote, but cannot predict the financial impact or outcome of the matter. An unfavorable outcome could have a material adverse effect on CMS Energy’s liquidity, financial condition, and results of operations.

Consumers Electric Utility Contingencies

Electric Environmental Matters: Consumers’ operations are subject to environmental laws and regulations. Historically, Consumers has generally been able to recover, in customer rates, the costs to operate its facilities in compliance with these laws and regulations.

Cleanup and Solid Waste: Consumers expects to incur remediation and other response activity costs at a number of sites under NREPA. Consumers believes that these costs should be recoverable in rates, but cannot guarantee that outcome. Consumers estimates that its liability for NREPA sites for which it can estimate a range of loss will be between $2 million and $4 million. At September 30, 2021, Consumers had a recorded liability of $2 million, the minimum amount in the range of its estimated probable NREPA liability, as no amount in the range was considered a better estimate than any other amount.

Consumers is a potentially responsible party at a number of contaminated sites administered under CERCLA. CERCLA liability is joint and several. In 2010, Consumers received official notification from the EPA that identified Consumers as a potentially responsible party for cleanup of PCBs at the Kalamazoo River CERCLA site. The notification claimed that the EPA has reason to believe that Consumers disposed of PCBs and arranged for the disposal and treatment of PCB-containing materials at portions of the site. In 2011, Consumers received a follow-up letter from the EPA requesting that Consumers agree to participate in a removal action plan along with several other companies for an area of lower Portage Creek, which is connected to the Kalamazoo River. All parties, including Consumers, that were asked to participate in the removal action plan declined to accept liability. Until further information is received from the EPA, Consumers is unable to estimate a range of potential liability for cleanup of the river.

Based on its experience, Consumers estimates that its share of the total liability for known CERCLA sites will be between $3 million and $8 million. Various factors, including the number and creditworthiness of

potentially responsible parties involved with each site, affect Consumers’ share of the total liability. At September 30, 2021, Consumers had a recorded liability of $3 million for its share of the total liability at these sites, the minimum amount in the range of its estimated probable CERCLA liability, as no amount in the range was considered a better estimate than any other amount.

The timing of payments related to Consumers’ remediation and other response activities at its CERCLA and NREPA sites is uncertain. Consumers periodically reviews these cost estimates. A change in the underlying assumptions, such as an increase in the number of sites, different remediation techniques, the nature and extent of contamination, and legal and regulatory requirements, could affect its estimates of NREPA and CERCLA liability.

Ludington PCB: In 1998, during routine maintenance activities, Consumers identified PCB as a component in certain paint, grout, and sealant materials at Ludington. Consumers removed part of the PCB material and replaced it with non‑PCB material. Consumers has had several communications with the EPA regarding this matter, but cannot predict the financial impact or outcome.

MCV PPA: In 2017, the MCV Partnership initiated arbitration against Consumers, asserting a breach of contract associated with the MCV PPA. In 2019, an arbitration panel issued an order concluding that the MCV Partnership is not entitled to any damages associated with a claim against Consumers that was related to the Clean Air Act. In November 2020, the MCV Partnership and Consumers signed a settlement agreement resolving all remaining disputes between the parties, and filed the settlement and associated agreements with the MPSC for approval. In March 2021, the MPSC approved the settlement and associated agreements.

Plant Purchase Commitment: In conjunction with its 2021 IRP, Consumers executed agreements to purchase:

•the New Covert Generating Facility, a natural gas-fueled generating unit with 1,176 MW of nameplate capacity in Van Buren County, Michigan, for $810 million, subject to certain adjustments, in 2023

•the enterprises segment’s three natural gas-fueled generating units, totaling 1,001 MW of nameplate capacity, for $515 million, subject to certain adjustments, in 2025

These agreements are subject to the approval of the MPSC and FERC and the New Covert Generating Facility agreement is subject to the expiration of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976.

Consumers Gas Utility Contingencies

Gas Environmental Matters: Consumers expects to incur remediation and other response activity costs at a number of sites under NREPA. These sites include 23 former MGP facilities. Consumers operated the facilities on these sites for some part of their operating lives. For some of these sites, Consumers has no present ownership interest or may own only a portion of the original site.

At September 30, 2021, Consumers had a recorded liability of $57 million for its remaining obligations for these sites. This amount represents the present value of long-term projected costs, using a discount rate of 2.57 percent and an inflation rate of 2.5 percent. The undiscounted amount of the remaining

obligation is $62 million. Consumers expects to pay the following amounts for remediation and other response activity costs during the remainder of 2021 and in each of the next five years:

In Millions
	2021			2022			2023			2024			2025			2026
Consumers
Remediation and other response activity costs		$	1		$	4		$	9		$	24		$	11		$	1

Consumers periodically reviews these cost estimates. Any significant change in the underlying assumptions, such as an increase in the number of sites, changes in remediation techniques, or legal and regulatory requirements, could affect Consumers’ estimates of annual response activity costs and the MGP liability.

Pursuant to orders issued by the MPSC, Consumers defers its MGP-related remediation costs and recovers them from its customers over a ten-year period. At September 30, 2021, Consumers had a regulatory asset of $114 million related to the MGP sites.

Consumers estimates that its liability to perform remediation and other response activities at NREPA sites other than the MGP sites could reach $3 million. At September 30, 2021, Consumers had a recorded liability of $1 million, the minimum amount in the range of its estimated probable liability, as no amount in the range was considered a better estimate than any other amount.

Ray Compressor Station: On January 30, 2019, Consumers experienced a fire at the Ray Compressor Station, which resulted in the Ray Storage Field being off‑line or operating at significantly reduced capacity, which negatively affected Consumers’ natural gas supply and delivery capacity. This incident, which occurred during the extreme polar vortex weather condition, required Consumers to request voluntary reductions in customer load, to implement contingency gas supply purchases, and to implement a curtailment of natural gas deliveries for industrial and large commercial customers pursuant to Consumers’ MPSC curtailment tariff. The curtailment and request for voluntary reductions of customer loads were canceled as of midnight, February 1, 2019. Consumers investigated the cause of the incident, and filed a report on the incident with the MPSC in April 2019. In response, the MPSC issued an order in July 2019, directing Consumers to file additional reports regarding the incident and to include detail of the resulting costs in a future rate proceeding. The compressor station is presently operating at full capacity.

In May 2020, the MPSC approved an administrative settlement agreement between Consumers and the MPSC Staff, which resulted in a $10,000 civil penalty in connection with the fire. Consumers may also be subject to various claims from impacted customers and claims for damages.

In September 2020, the MPSC disallowed the recovery of $7 million in incremental gas purchases related to the fire. In January 2021, the MPSC denied Consumers’ petition for a rehearing challenging this disallowance. In February 2021, Consumers filed an appeal of the MPSC’s denial with the Michigan Court of Appeals. Consumers could also be subject to disallowances of costs associated with the repair and modification of the Ray Compressor Station. At September 30, 2021, Consumers had incurred capital expenditures of $17 million to restore and modify the compressor station.

As of September 30, 2021, Consumers had recorded an insurance recovery of $10 million related to the compressor station. Consumers recognized $4 million of the insurance recovery as a reduction to plant, property, and equipment, $3 million as a reduction of maintenance and other operating expenses, and $3 million as operating revenue, which represented recovery of incremental gas purchases related to the fire.

At this time, Consumers cannot predict the outcome of these matters or other gas-related incidents and a reasonable estimate of a total loss cannot be made, but they could have a material adverse effect on CMS Energy’s and Consumers’ results of operations, financial condition, or liquidity, and could subject Consumers’ gas utility to increased regulatory scrutiny.

Guarantees

Presented in the following table are CMS Energy’s and Consumers’ guarantees at September 30, 2021:

In Millions
Guarantee Description	Issue Date	Expiration Date	Maximum Obligation			Carrying Amount
CMS Energy, including Consumers
Indemnity obligations from purchase of VIE1	September 2020	indefinite		$	320		$	—
Indemnity obligations from stock and asset sale agreements2	various	indefinite		153			2
Guarantee3	July 2011	indefinite		30			—
Consumers
Guarantee3	July 2011	indefinite		$	30		$	—

1In conjunction with the purchase of its interest in Aviator Wind Equity Holdings, CMS Enterprises assumed certain indemnity obligations that protect the associated tax equity investor against losses incurred as a result of breaches of representations and warranties provided by Aviator Wind Equity Holdings and its subsidiaries. These obligations are generally capped at an amount equal to the tax equity investor’s capital contributions plus a specified return, less any distributions and tax benefits it receives, in connection with its membership interest in Aviator Wind. CMS Enterprises would recover 49 percent of any amounts paid to the tax equity investor from the other owner of Aviator Wind Equity Holdings. Additionally, Aviator Wind holds insurance coverage that would partially protect against losses incurred as a result of certain failures to qualify for production tax credits. For further details on CMS Enterprises’ ownership interest in Aviator Wind Equity Holdings, see Note 12, Variable Interest Entities.

2These obligations arose from stock and asset sale agreements under which CMS Energy or a subsidiary of CMS Energy indemnified the purchaser for losses resulting from various matters, primarily claims related to taxes. The maximum obligation amount is mostly related to the Equatorial Guinea tax claim discussed in the CMS Energy Contingencies section of this Note. CMS Energy believes the likelihood of material loss to be remote for the indemnity obligations not recorded as liabilities.

3This obligation comprises a guarantee provided by Consumers to the U.S. Department of Energy in connection with a settlement agreement regarding damages resulting from the department’s failure to accept spent nuclear fuel from nuclear power plants formerly owned by Consumers.

Additionally, in the normal course of business, CMS Energy, Consumers, and certain other subsidiaries of CMS Energy have entered into various agreements containing tax and other indemnity provisions for which they are unable to estimate the maximum potential obligation. At September 30, 2021, the carrying value of these indemnity obligations was $1 million. CMS Energy and Consumers consider the likelihood that they would be required to perform or incur substantial losses related to these indemnities to be remote.

Other Contingencies

In addition to the matters disclosed in this Note and Note 1, Regulatory Matters, there are certain other lawsuits and administrative proceedings before various courts and governmental agencies, as well as

unasserted claims that may result in such proceedings, arising in the ordinary course of business to which CMS Energy, Consumers, and certain other subsidiaries of CMS Energy are parties. These other lawsuits, proceedings, and unasserted claims may involve personal injury, property damage, contracts, environmental matters, federal and state taxes, rates, licensing, employment, and other matters. Further, CMS Energy and Consumers occasionally self-report certain regulatory non‑compliance matters that may or may not eventually result in administrative proceedings. CMS Energy and Consumers believe that the outcome of any one of these proceedings and potential claims will not have a material negative effect on their consolidated results of operations, financial condition, or liquidity.

Consumers Energy Company

Other Commitments [Line Items]

Contingencies and Commitments

Contingencies and Commitments

CMS Energy and Consumers are involved in various matters that give rise to contingent liabilities. Depending on the specific issues, the resolution of these contingencies could negatively affect CMS Energy’s and Consumers’ liquidity, financial condition, and results of operations. In their disclosures of these matters, CMS Energy and Consumers provide an estimate of the possible loss or range of loss when such an estimate can be made. Disclosures that state that CMS Energy or Consumers cannot predict the outcome of a matter indicate that they are unable to estimate a possible loss or range of loss for the matter.

CMS Energy Contingencies

Bay Harbor: CMS Land retained environmental remediation obligations for the collection and treatment of leachate at Bay Harbor after selling its interests in the development in 2002. Leachate is produced when water enters into cement kiln dust piles left over from former cement plant operations at the site. In 2012, CMS Land and EGLE finalized an agreement that established the final remedies and the future water quality criteria at the site. CMS Land completed all construction necessary to implement the remedies required by the agreement and will continue to maintain and operate a system to discharge treated leachate into Little Traverse Bay under an NPDES permit, which was valid through September 2020. CMS Land submitted a renewal request for the permit in April 2020. CMS Land is allowed to continue operating under the previous NPDES permit until a response is received from EGLE.

At September 30, 2021, CMS Energy had a recorded liability of $44 million for its remaining obligations for environmental remediation. CMS Energy calculated this liability based on discounted projected costs, using a discount rate of 4.34 percent and an inflation rate of one percent on annual operating and maintenance costs. The undiscounted amount of the remaining obligation is $54 million. CMS Energy

expects to pay the following amounts for long-term leachate disposal and operating and maintenance costs during the remainder of 2021 and in each of the next five years:

In Millions
	2021			2022			2023			2024			2025			2026
CMS Energy
Long-term leachate disposal and operating and maintenance costs		$	1		$	4		$	4		$	4		$	4		$	4

CMS Energy’s estimate of response activity costs and the timing of expenditures could change if there are changes in circumstances or assumptions used in calculating the liability. Although a liability for its present estimate of remaining response activity costs has been recorded, CMS Energy cannot predict the ultimate financial impact or outcome of this matter.

Equatorial Guinea Tax Claim: In 2002, CMS Energy sold its oil, gas, and methanol investments in Equatorial Guinea. The government of Equatorial Guinea claims that, in connection with the sale, CMS Energy owes $152 million in taxes, plus substantial penalties and interest that could be up to or exceed the amount of the taxes claimed. In 2015, the matter was proceeding to formal arbitration; however, since then, the government of Equatorial Guinea has stopped communicating. CMS Energy has concluded that the government’s tax claim is without merit and believes the likelihood of material loss to be remote, but cannot predict the financial impact or outcome of the matter. An unfavorable outcome could have a material adverse effect on CMS Energy’s liquidity, financial condition, and results of operations.

Consumers Electric Utility Contingencies

Electric Environmental Matters: Consumers’ operations are subject to environmental laws and regulations. Historically, Consumers has generally been able to recover, in customer rates, the costs to operate its facilities in compliance with these laws and regulations.

Cleanup and Solid Waste: Consumers expects to incur remediation and other response activity costs at a number of sites under NREPA. Consumers believes that these costs should be recoverable in rates, but cannot guarantee that outcome. Consumers estimates that its liability for NREPA sites for which it can estimate a range of loss will be between $2 million and $4 million. At September 30, 2021, Consumers had a recorded liability of $2 million, the minimum amount in the range of its estimated probable NREPA liability, as no amount in the range was considered a better estimate than any other amount.

Consumers is a potentially responsible party at a number of contaminated sites administered under CERCLA. CERCLA liability is joint and several. In 2010, Consumers received official notification from the EPA that identified Consumers as a potentially responsible party for cleanup of PCBs at the Kalamazoo River CERCLA site. The notification claimed that the EPA has reason to believe that Consumers disposed of PCBs and arranged for the disposal and treatment of PCB-containing materials at portions of the site. In 2011, Consumers received a follow-up letter from the EPA requesting that Consumers agree to participate in a removal action plan along with several other companies for an area of lower Portage Creek, which is connected to the Kalamazoo River. All parties, including Consumers, that were asked to participate in the removal action plan declined to accept liability. Until further information is received from the EPA, Consumers is unable to estimate a range of potential liability for cleanup of the river.

Based on its experience, Consumers estimates that its share of the total liability for known CERCLA sites will be between $3 million and $8 million. Various factors, including the number and creditworthiness of

potentially responsible parties involved with each site, affect Consumers’ share of the total liability. At September 30, 2021, Consumers had a recorded liability of $3 million for its share of the total liability at these sites, the minimum amount in the range of its estimated probable CERCLA liability, as no amount in the range was considered a better estimate than any other amount.

The timing of payments related to Consumers’ remediation and other response activities at its CERCLA and NREPA sites is uncertain. Consumers periodically reviews these cost estimates. A change in the underlying assumptions, such as an increase in the number of sites, different remediation techniques, the nature and extent of contamination, and legal and regulatory requirements, could affect its estimates of NREPA and CERCLA liability.

Ludington PCB: In 1998, during routine maintenance activities, Consumers identified PCB as a component in certain paint, grout, and sealant materials at Ludington. Consumers removed part of the PCB material and replaced it with non‑PCB material. Consumers has had several communications with the EPA regarding this matter, but cannot predict the financial impact or outcome.

MCV PPA: In 2017, the MCV Partnership initiated arbitration against Consumers, asserting a breach of contract associated with the MCV PPA. In 2019, an arbitration panel issued an order concluding that the MCV Partnership is not entitled to any damages associated with a claim against Consumers that was related to the Clean Air Act. In November 2020, the MCV Partnership and Consumers signed a settlement agreement resolving all remaining disputes between the parties, and filed the settlement and associated agreements with the MPSC for approval. In March 2021, the MPSC approved the settlement and associated agreements.

Plant Purchase Commitment: In conjunction with its 2021 IRP, Consumers executed agreements to purchase:

•the New Covert Generating Facility, a natural gas-fueled generating unit with 1,176 MW of nameplate capacity in Van Buren County, Michigan, for $810 million, subject to certain adjustments, in 2023

•the enterprises segment’s three natural gas-fueled generating units, totaling 1,001 MW of nameplate capacity, for $515 million, subject to certain adjustments, in 2025

These agreements are subject to the approval of the MPSC and FERC and the New Covert Generating Facility agreement is subject to the expiration of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976.

Consumers Gas Utility Contingencies

Gas Environmental Matters: Consumers expects to incur remediation and other response activity costs at a number of sites under NREPA. These sites include 23 former MGP facilities. Consumers operated the facilities on these sites for some part of their operating lives. For some of these sites, Consumers has no present ownership interest or may own only a portion of the original site.

At September 30, 2021, Consumers had a recorded liability of $57 million for its remaining obligations for these sites. This amount represents the present value of long-term projected costs, using a discount rate of 2.57 percent and an inflation rate of 2.5 percent. The undiscounted amount of the remaining

obligation is $62 million. Consumers expects to pay the following amounts for remediation and other response activity costs during the remainder of 2021 and in each of the next five years:

In Millions
	2021			2022			2023			2024			2025			2026
Consumers
Remediation and other response activity costs		$	1		$	4		$	9		$	24		$	11		$	1

Consumers periodically reviews these cost estimates. Any significant change in the underlying assumptions, such as an increase in the number of sites, changes in remediation techniques, or legal and regulatory requirements, could affect Consumers’ estimates of annual response activity costs and the MGP liability.

Pursuant to orders issued by the MPSC, Consumers defers its MGP-related remediation costs and recovers them from its customers over a ten-year period. At September 30, 2021, Consumers had a regulatory asset of $114 million related to the MGP sites.

Consumers estimates that its liability to perform remediation and other response activities at NREPA sites other than the MGP sites could reach $3 million. At September 30, 2021, Consumers had a recorded liability of $1 million, the minimum amount in the range of its estimated probable liability, as no amount in the range was considered a better estimate than any other amount.

Ray Compressor Station: On January 30, 2019, Consumers experienced a fire at the Ray Compressor Station, which resulted in the Ray Storage Field being off‑line or operating at significantly reduced capacity, which negatively affected Consumers’ natural gas supply and delivery capacity. This incident, which occurred during the extreme polar vortex weather condition, required Consumers to request voluntary reductions in customer load, to implement contingency gas supply purchases, and to implement a curtailment of natural gas deliveries for industrial and large commercial customers pursuant to Consumers’ MPSC curtailment tariff. The curtailment and request for voluntary reductions of customer loads were canceled as of midnight, February 1, 2019. Consumers investigated the cause of the incident, and filed a report on the incident with the MPSC in April 2019. In response, the MPSC issued an order in July 2019, directing Consumers to file additional reports regarding the incident and to include detail of the resulting costs in a future rate proceeding. The compressor station is presently operating at full capacity.

In May 2020, the MPSC approved an administrative settlement agreement between Consumers and the MPSC Staff, which resulted in a $10,000 civil penalty in connection with the fire. Consumers may also be subject to various claims from impacted customers and claims for damages.

In September 2020, the MPSC disallowed the recovery of $7 million in incremental gas purchases related to the fire. In January 2021, the MPSC denied Consumers’ petition for a rehearing challenging this disallowance. In February 2021, Consumers filed an appeal of the MPSC’s denial with the Michigan Court of Appeals. Consumers could also be subject to disallowances of costs associated with the repair and modification of the Ray Compressor Station. At September 30, 2021, Consumers had incurred capital expenditures of $17 million to restore and modify the compressor station.

As of September 30, 2021, Consumers had recorded an insurance recovery of $10 million related to the compressor station. Consumers recognized $4 million of the insurance recovery as a reduction to plant, property, and equipment, $3 million as a reduction of maintenance and other operating expenses, and $3 million as operating revenue, which represented recovery of incremental gas purchases related to the fire.

At this time, Consumers cannot predict the outcome of these matters or other gas-related incidents and a reasonable estimate of a total loss cannot be made, but they could have a material adverse effect on CMS Energy’s and Consumers’ results of operations, financial condition, or liquidity, and could subject Consumers’ gas utility to increased regulatory scrutiny.

Guarantees

Presented in the following table are CMS Energy’s and Consumers’ guarantees at September 30, 2021:

In Millions
Guarantee Description	Issue Date	Expiration Date	Maximum Obligation			Carrying Amount
CMS Energy, including Consumers
Indemnity obligations from purchase of VIE1	September 2020	indefinite		$	320		$	—
Indemnity obligations from stock and asset sale agreements2	various	indefinite		153			2
Guarantee3	July 2011	indefinite		30			—
Consumers
Guarantee3	July 2011	indefinite		$	30		$	—

1In conjunction with the purchase of its interest in Aviator Wind Equity Holdings, CMS Enterprises assumed certain indemnity obligations that protect the associated tax equity investor against losses incurred as a result of breaches of representations and warranties provided by Aviator Wind Equity Holdings and its subsidiaries. These obligations are generally capped at an amount equal to the tax equity investor’s capital contributions plus a specified return, less any distributions and tax benefits it receives, in connection with its membership interest in Aviator Wind. CMS Enterprises would recover 49 percent of any amounts paid to the tax equity investor from the other owner of Aviator Wind Equity Holdings. Additionally, Aviator Wind holds insurance coverage that would partially protect against losses incurred as a result of certain failures to qualify for production tax credits. For further details on CMS Enterprises’ ownership interest in Aviator Wind Equity Holdings, see Note 12, Variable Interest Entities.

2These obligations arose from stock and asset sale agreements under which CMS Energy or a subsidiary of CMS Energy indemnified the purchaser for losses resulting from various matters, primarily claims related to taxes. The maximum obligation amount is mostly related to the Equatorial Guinea tax claim discussed in the CMS Energy Contingencies section of this Note. CMS Energy believes the likelihood of material loss to be remote for the indemnity obligations not recorded as liabilities.

3This obligation comprises a guarantee provided by Consumers to the U.S. Department of Energy in connection with a settlement agreement regarding damages resulting from the department’s failure to accept spent nuclear fuel from nuclear power plants formerly owned by Consumers.

Additionally, in the normal course of business, CMS Energy, Consumers, and certain other subsidiaries of CMS Energy have entered into various agreements containing tax and other indemnity provisions for which they are unable to estimate the maximum potential obligation. At September 30, 2021, the carrying value of these indemnity obligations was $1 million. CMS Energy and Consumers consider the likelihood that they would be required to perform or incur substantial losses related to these indemnities to be remote.

Other Contingencies

In addition to the matters disclosed in this Note and Note 1, Regulatory Matters, there are certain other lawsuits and administrative proceedings before various courts and governmental agencies, as well as

unasserted claims that may result in such proceedings, arising in the ordinary course of business to which CMS Energy, Consumers, and certain other subsidiaries of CMS Energy are parties. These other lawsuits, proceedings, and unasserted claims may involve personal injury, property damage, contracts, environmental matters, federal and state taxes, rates, licensing, employment, and other matters. Further, CMS Energy and Consumers occasionally self-report certain regulatory non‑compliance matters that may or may not eventually result in administrative proceedings. CMS Energy and Consumers believe that the outcome of any one of these proceedings and potential claims will not have a material negative effect on their consolidated results of operations, financial condition, or liquidity.

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Financings And Capitalization

9 Months Ended

Sep. 30, 2021

Debt Instrument [Line Items]

Financings and Capitalization

Financings and Capitalization

Financings: Presented in the following table is a summary of major long-term debt issuances during the nine months ended September 30, 2021:

	Principal (In Millions)			Interest Rate	Issuance Date	Maturity Date
Consumers
First mortgage bonds		$	300	2.650%	August 2021	August 2052

In July 2020, Consumers purchased, in lieu of redemption, $35 million of variable-rate tax-exempt revenue bonds that mature in April 2035. In October 2021, Consumers remarketed the $35 million variable-rate tax-exempt revenue bonds, bearing interest at a rate of 0.875 percent through October 2026, at which time the rate will reset.

In October 2021, CMS Energy retired its $200 million term loan with a maturity of November 2021.

Credit Facilities: The following credit facilities with banks were available at September 30, 2021:

In Millions
Expiration Date	Amount of Facility			Amount Borrowed			Letters of Credit Outstanding			Amount Available
CMS Energy, parent only
June 5, 2024		$	550		$	—		$	18		$	532
September 23, 20221		31			—			31			—
CMS Enterprises, including subsidiaries
September 25, 20252		$	39		$	—		$	39		$	—
September 30, 20253		18			—			8			10
Consumers4
June 5, 2024		$	850		$	—		$	12		$	838
November 19, 2022		250			—			1			249
April 18, 2022		30			—			30			—

1The maximum aggregate of letters of credit that may be issued under this facility is $50 million. The amount remaining under the facility is uncommitted.

2This letter of credit facility is available to Aviator Wind Equity Holdings. For more information regarding Aviator Wind Equity Holdings, see Note 12, Variable Interest Entities.

3Under this facility, $8 million is available solely for the purpose of issuing letters of credit. Obligations under this facility are secured by the collateral accounts with the lending bank.

4Obligations under these facilities are secured by first mortgage bonds of Consumers.

Short-term Borrowings: Under Consumers’ commercial paper program, Consumers may issue, in one or more placements, investment-grade commercial paper notes with maturities of up to 365 days at market interest rates. These issuances are supported by Consumers’ revolving credit facilities and may have an aggregate principal amount outstanding of up to $500 million. While the amount of outstanding commercial paper does not reduce the available capacity of the revolving credit facilities, Consumers does not intend to issue commercial paper in an amount exceeding the available capacity of the facilities. At September 30, 2021, there were no commercial paper notes outstanding under this program.

In December 2020, Consumers renewed a short-term credit agreement with CMS Energy, permitting Consumers to borrow up to $350 million at an interest rate of one month LIBOR minus 0.100 percent. In October 2021, Consumers increased the limit at which it could borrow under the agreement to $500 million. At September 30, 2021, there were no outstanding loans under the agreement.

Dividend Restrictions: At September 30, 2021, payment of dividends by CMS Energy on its common stock was limited to $5.9 billion under provisions of the Michigan Business Corporation Act of 1972.

Under the provisions of its articles of incorporation, at September 30, 2021, Consumers had $1.8 billion of unrestricted retained earnings available to pay dividends on its common stock to CMS Energy. Provisions of the Federal Power Act and the Natural Gas Act appear to restrict dividends payable by Consumers to the amount of Consumers’ retained earnings. Several decisions from FERC suggest that, under a variety of circumstances, dividends from Consumers on its common stock would not be limited to amounts in Consumers’ retained earnings. Any decision by Consumers to pay dividends on its common stock in excess of retained earnings would be based on specific facts and circumstances and would be subject to a formal regulatory filing process.

During the nine months ended September 30, 2021, Consumers paid $570 million in dividends on its common stock to CMS Energy.

Issuance of Common Stock: In 2020, CMS Energy entered into an equity offering program under which it may sell, from time to time, shares of CMS Energy common stock. Under the program, CMS Energy may sell its common stock in privately negotiated transactions, in “at the market” offerings, through forward sales transactions, or otherwise.

CMS Energy may sell shares of its common stock having an aggregate sales price of up to $500 million. Presented in the following table are details of CMS Energy’s forward sales contracts under this program at September 30, 2021:

			Forward Price Per Share
Contract Date	Maturity Date	Number of Shares	Initial			September 30, 2021
September 15, 2020	June 30, 2022	846,759		$	61.04		$	59.01
December 22, 2020	June 22, 2022	115,595		61.81			60.27

These contracts allow CMS Energy to either physically settle the contracts by issuing shares of its common stock at the then-applicable forward sale price specified by the agreement or net settle the contracts through the delivery or receipt of cash or shares. CMS Energy may settle the contracts at any time through their maturity dates, and presently intends to physically settle the contracts by delivering shares of its common stock.

The initial forward price in the forward equity sale contracts includes a deduction for commissions and will be adjusted on a daily basis over the term based on an interest rate factor and decreased on certain

dates by certain predetermined amounts to reflect expected dividend payments. No amounts are recorded on CMS Energy’s consolidated balance sheets until settlements of the forward equity sale contracts occur. If CMS Energy had elected to net share settle the contracts as of September 30, 2021, CMS Energy would have been required to deliver 10,266 shares.

Issuance of Preferred Stock: On July 1, 2021, CMS Energy issued 9.2 million depositary shares, each representing 1/1,000th share of its Series C preferred stock, at a price of $25.00 per depositary share. The transaction resulted in net proceeds of $224 million, which will be used for general corporate purposes. Dividends on the preferred stock accumulate at an annual rate of 4.200 percent and are payable quarterly, commencing on October 15, 2021.

The Series C preferred stock has no maturity or mandatory redemption date and is not redeemable at the option of the holders. CMS Energy may, at its option, redeem the Series C preferred stock, in whole or in part, at a price equal to $25,000 per share (equivalent to $25.00 per depositary share), plus accumulated and unpaid dividends, at any time on or after July 15, 2026. The Series C preferred stock ranks senior to CMS Energy’s common stock with respect to dividend rights and distribution rights upon liquidation.

Consumers Energy Company

Debt Instrument [Line Items]

Financings and Capitalization

Financings and Capitalization

Financings: Presented in the following table is a summary of major long-term debt issuances during the nine months ended September 30, 2021:

	Principal (In Millions)			Interest Rate	Issuance Date	Maturity Date
Consumers
First mortgage bonds		$	300	2.650%	August 2021	August 2052

In July 2020, Consumers purchased, in lieu of redemption, $35 million of variable-rate tax-exempt revenue bonds that mature in April 2035. In October 2021, Consumers remarketed the $35 million variable-rate tax-exempt revenue bonds, bearing interest at a rate of 0.875 percent through October 2026, at which time the rate will reset.

In October 2021, CMS Energy retired its $200 million term loan with a maturity of November 2021.

Credit Facilities: The following credit facilities with banks were available at September 30, 2021:

In Millions
Expiration Date	Amount of Facility			Amount Borrowed			Letters of Credit Outstanding			Amount Available
CMS Energy, parent only
June 5, 2024		$	550		$	—		$	18		$	532
September 23, 20221		31			—			31			—
CMS Enterprises, including subsidiaries
September 25, 20252		$	39		$	—		$	39		$	—
September 30, 20253		18			—			8			10
Consumers4
June 5, 2024		$	850		$	—		$	12		$	838
November 19, 2022		250			—			1			249
April 18, 2022		30			—			30			—

1The maximum aggregate of letters of credit that may be issued under this facility is $50 million. The amount remaining under the facility is uncommitted.

2This letter of credit facility is available to Aviator Wind Equity Holdings. For more information regarding Aviator Wind Equity Holdings, see Note 12, Variable Interest Entities.

3Under this facility, $8 million is available solely for the purpose of issuing letters of credit. Obligations under this facility are secured by the collateral accounts with the lending bank.

4Obligations under these facilities are secured by first mortgage bonds of Consumers.

Short-term Borrowings: Under Consumers’ commercial paper program, Consumers may issue, in one or more placements, investment-grade commercial paper notes with maturities of up to 365 days at market interest rates. These issuances are supported by Consumers’ revolving credit facilities and may have an aggregate principal amount outstanding of up to $500 million. While the amount of outstanding commercial paper does not reduce the available capacity of the revolving credit facilities, Consumers does not intend to issue commercial paper in an amount exceeding the available capacity of the facilities. At September 30, 2021, there were no commercial paper notes outstanding under this program.

In December 2020, Consumers renewed a short-term credit agreement with CMS Energy, permitting Consumers to borrow up to $350 million at an interest rate of one month LIBOR minus 0.100 percent. In October 2021, Consumers increased the limit at which it could borrow under the agreement to $500 million. At September 30, 2021, there were no outstanding loans under the agreement.

Dividend Restrictions: At September 30, 2021, payment of dividends by CMS Energy on its common stock was limited to $5.9 billion under provisions of the Michigan Business Corporation Act of 1972.

Under the provisions of its articles of incorporation, at September 30, 2021, Consumers had $1.8 billion of unrestricted retained earnings available to pay dividends on its common stock to CMS Energy. Provisions of the Federal Power Act and the Natural Gas Act appear to restrict dividends payable by Consumers to the amount of Consumers’ retained earnings. Several decisions from FERC suggest that, under a variety of circumstances, dividends from Consumers on its common stock would not be limited to amounts in Consumers’ retained earnings. Any decision by Consumers to pay dividends on its common stock in excess of retained earnings would be based on specific facts and circumstances and would be subject to a formal regulatory filing process.

During the nine months ended September 30, 2021, Consumers paid $570 million in dividends on its common stock to CMS Energy.

Issuance of Common Stock: In 2020, CMS Energy entered into an equity offering program under which it may sell, from time to time, shares of CMS Energy common stock. Under the program, CMS Energy may sell its common stock in privately negotiated transactions, in “at the market” offerings, through forward sales transactions, or otherwise.

CMS Energy may sell shares of its common stock having an aggregate sales price of up to $500 million. Presented in the following table are details of CMS Energy’s forward sales contracts under this program at September 30, 2021:

			Forward Price Per Share
Contract Date	Maturity Date	Number of Shares	Initial			September 30, 2021
September 15, 2020	June 30, 2022	846,759		$	61.04		$	59.01
December 22, 2020	June 22, 2022	115,595		61.81			60.27

These contracts allow CMS Energy to either physically settle the contracts by issuing shares of its common stock at the then-applicable forward sale price specified by the agreement or net settle the contracts through the delivery or receipt of cash or shares. CMS Energy may settle the contracts at any time through their maturity dates, and presently intends to physically settle the contracts by delivering shares of its common stock.

The initial forward price in the forward equity sale contracts includes a deduction for commissions and will be adjusted on a daily basis over the term based on an interest rate factor and decreased on certain

dates by certain predetermined amounts to reflect expected dividend payments. No amounts are recorded on CMS Energy’s consolidated balance sheets until settlements of the forward equity sale contracts occur. If CMS Energy had elected to net share settle the contracts as of September 30, 2021, CMS Energy would have been required to deliver 10,266 shares.

Issuance of Preferred Stock: On July 1, 2021, CMS Energy issued 9.2 million depositary shares, each representing 1/1,000th share of its Series C preferred stock, at a price of $25.00 per depositary share. The transaction resulted in net proceeds of $224 million, which will be used for general corporate purposes. Dividends on the preferred stock accumulate at an annual rate of 4.200 percent and are payable quarterly, commencing on October 15, 2021.

The Series C preferred stock has no maturity or mandatory redemption date and is not redeemable at the option of the holders. CMS Energy may, at its option, redeem the Series C preferred stock, in whole or in part, at a price equal to $25,000 per share (equivalent to $25.00 per depositary share), plus accumulated and unpaid dividends, at any time on or after July 15, 2026. The Series C preferred stock ranks senior to CMS Energy’s common stock with respect to dividend rights and distribution rights upon liquidation.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2021

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value Measurements

Fair Value Measurements

Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. When measuring fair value, CMS Energy and Consumers are required to incorporate all assumptions that market participants would use in pricing an asset or liability, including assumptions about risk. A fair value hierarchy prioritizes inputs used to measure fair value according to their observability in the market. The three levels of the fair value hierarchy are as follows:

•Level 1 inputs are unadjusted quoted prices in active markets for identical assets or liabilities.

•Level 2 inputs are observable, market-based inputs, other than Level 1 prices. Level 2 inputs may include quoted prices for similar assets or liabilities in active markets, quoted prices in inactive markets, and inputs derived from or corroborated by observable market data.

•Level 3 inputs are unobservable inputs that reflect CMS Energy’s or Consumers’ own assumptions about how market participants would value their assets and liabilities.

CMS Energy and Consumers classify fair value measurements within the fair value hierarchy based on the lowest level of input that is significant to the fair value measurement in its entirety.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:

In Millions
	CMS Energy, including Consumers						Consumers
	September 30 2021			December 31 2020			September 30 2021			December 31 2020
Assets1
Restricted cash equivalents		$	30		$	17		$	26		$	15
Nonqualified deferred compensation plan assets		25			23			20			18
Derivative instruments		2			1			2			1
Total assets		$	57		$	41		$	48		$	34
Liabilities1
Nonqualified deferred compensation plan liabilities		$	25		$	23		$	20		$	18
Derivative instruments		9			11			—			—
Total liabilities		$	34		$	34		$	20		$	18

1All assets and liabilities were classified as Level 1 with the exception of derivative contracts, which were classified as Level 2 or Level 3.

Restricted Cash Equivalents: Restricted cash equivalents consist of money market funds with daily liquidity. For further details, see Note 10, Cash and Cash Equivalents.

Nonqualified Deferred Compensation Plan Assets and Liabilities: The nonqualified deferred compensation plan assets consist of mutual funds, which are valued using the daily quoted net asset values. CMS Energy and Consumers value their nonqualified deferred compensation plan liabilities based on the fair values of the plan assets, as they reflect the amount owed to the plan participants in accordance with their investment elections. CMS Energy and Consumers report the assets in other non‑current assets and the liabilities in other non‑current liabilities on their consolidated balance sheets.

Derivative Instruments: CMS Energy and Consumers value their derivative instruments using either a market approach that incorporates information from market transactions, or an income approach that discounts future expected cash flows to a present value amount. CMS Energy’s and Consumers’ derivatives are classified as Level 2 or Level 3.

The derivatives classified as Level 2 are interest rate swaps at CMS Energy, which are valued using market-based inputs. CMS Energy uses interest rate swaps to manage its interest rate risk on certain long‑term debt obligations.

A subsidiary of CMS Enterprises uses floating-to-fixed interest rate swaps to reduce the impact of interest rate fluctuations associated with future interest payments on certain long‑term variable-rate debt. The interest rate swaps are accounted for as cash flow hedges of the future variability of interest payments on debt with a notional amount of $81 million at September 30, 2021 and $85 million at December 31, 2020. Gains or losses on these swaps are initially reported in other comprehensive income (loss) and then, as interest payments are made on the hedged debt, are recognized in earnings within interest on long-term debt on CMS Energy’s consolidated statements of income. CMS Energy recorded gains (losses) in other

comprehensive income (loss) of $1 million for the nine months ended September 30, 2021 and $(6) million for the nine months ended September 30, 2020. There were no material impacts on interest on long-term debt associated with these swaps during the periods presented. The fair value of these swaps recorded in other liabilities on CMS Energy’s consolidated balance sheets totaled $6 million at September 30, 2021 and $9 million at December 31, 2020. CMS Energy also has other interest rate swaps that economically hedge interest rate risk on debt, but that do not qualify for cash flow hedge accounting; the amounts associated with these swaps were not material for the periods presented.

The majority of derivatives classified as Level 3 are FTRs held by Consumers. Due to the lack of quoted pricing information, Consumers determines the fair value of its FTRs based on Consumers’ average historical settlements. There was no material activity within the Level 3 categories of assets and liabilities during the periods presented.

Consumers Energy Company

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value Measurements

Fair Value Measurements

Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. When measuring fair value, CMS Energy and Consumers are required to incorporate all assumptions that market participants would use in pricing an asset or liability, including assumptions about risk. A fair value hierarchy prioritizes inputs used to measure fair value according to their observability in the market. The three levels of the fair value hierarchy are as follows:

•Level 1 inputs are unadjusted quoted prices in active markets for identical assets or liabilities.

•Level 2 inputs are observable, market-based inputs, other than Level 1 prices. Level 2 inputs may include quoted prices for similar assets or liabilities in active markets, quoted prices in inactive markets, and inputs derived from or corroborated by observable market data.

•Level 3 inputs are unobservable inputs that reflect CMS Energy’s or Consumers’ own assumptions about how market participants would value their assets and liabilities.

CMS Energy and Consumers classify fair value measurements within the fair value hierarchy based on the lowest level of input that is significant to the fair value measurement in its entirety.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:

In Millions
	CMS Energy, including Consumers						Consumers
	September 30 2021			December 31 2020			September 30 2021			December 31 2020
Assets1
Restricted cash equivalents		$	30		$	17		$	26		$	15
Nonqualified deferred compensation plan assets		25			23			20			18
Derivative instruments		2			1			2			1
Total assets		$	57		$	41		$	48		$	34
Liabilities1
Nonqualified deferred compensation plan liabilities		$	25		$	23		$	20		$	18
Derivative instruments		9			11			—			—
Total liabilities		$	34		$	34		$	20		$	18

1All assets and liabilities were classified as Level 1 with the exception of derivative contracts, which were classified as Level 2 or Level 3.

Restricted Cash Equivalents: Restricted cash equivalents consist of money market funds with daily liquidity. For further details, see Note 10, Cash and Cash Equivalents.

Nonqualified Deferred Compensation Plan Assets and Liabilities: The nonqualified deferred compensation plan assets consist of mutual funds, which are valued using the daily quoted net asset values. CMS Energy and Consumers value their nonqualified deferred compensation plan liabilities based on the fair values of the plan assets, as they reflect the amount owed to the plan participants in accordance with their investment elections. CMS Energy and Consumers report the assets in other non‑current assets and the liabilities in other non‑current liabilities on their consolidated balance sheets.

Derivative Instruments: CMS Energy and Consumers value their derivative instruments using either a market approach that incorporates information from market transactions, or an income approach that discounts future expected cash flows to a present value amount. CMS Energy’s and Consumers’ derivatives are classified as Level 2 or Level 3.

The derivatives classified as Level 2 are interest rate swaps at CMS Energy, which are valued using market-based inputs. CMS Energy uses interest rate swaps to manage its interest rate risk on certain long‑term debt obligations.

A subsidiary of CMS Enterprises uses floating-to-fixed interest rate swaps to reduce the impact of interest rate fluctuations associated with future interest payments on certain long‑term variable-rate debt. The interest rate swaps are accounted for as cash flow hedges of the future variability of interest payments on debt with a notional amount of $81 million at September 30, 2021 and $85 million at December 31, 2020. Gains or losses on these swaps are initially reported in other comprehensive income (loss) and then, as interest payments are made on the hedged debt, are recognized in earnings within interest on long-term debt on CMS Energy’s consolidated statements of income. CMS Energy recorded gains (losses) in other

comprehensive income (loss) of $1 million for the nine months ended September 30, 2021 and $(6) million for the nine months ended September 30, 2020. There were no material impacts on interest on long-term debt associated with these swaps during the periods presented. The fair value of these swaps recorded in other liabilities on CMS Energy’s consolidated balance sheets totaled $6 million at September 30, 2021 and $9 million at December 31, 2020. CMS Energy also has other interest rate swaps that economically hedge interest rate risk on debt, but that do not qualify for cash flow hedge accounting; the amounts associated with these swaps were not material for the periods presented.

The majority of derivatives classified as Level 3 are FTRs held by Consumers. Due to the lack of quoted pricing information, Consumers determines the fair value of its FTRs based on Consumers’ average historical settlements. There was no material activity within the Level 3 categories of assets and liabilities during the periods presented.

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Financial Instruments

9 Months Ended

Sep. 30, 2021

Financial Instruments [Line Items]

Financial Instruments

Financial Instruments

Presented in the following table are the carrying amounts and fair values, by level within the fair value hierarchy, of CMS Energy’s and Consumers’ financial instruments that are not recorded at fair value. The table excludes cash, cash equivalents, short-term financial instruments, and trade accounts receivable and payable whose carrying amounts approximate their fair values. For information about assets and liabilities recorded at fair value and for additional details regarding the fair value hierarchy, see Note 4, Fair Value Measurements.

In Millions
	September 30, 2021															December 31, 2020
	Carrying Amount			Fair Value												Carrying Amount			Fair Value
				Total			Level												Total			Level
							1			2			3									1			2			3
CMS Energy, including Consumers
Assets
Long-term receivables1		$	14		$	14		$	—		$	—		$	14		$	17		$	17		$	—		$	—		$	17
Liabilities
Long-term debt2		12,599			13,886			1,195			10,727			1,964			12,315			14,601			1,249			11,267			2,085
Long-term payables3		31			32			—			—			32			33			35			—			—			35
Consumers
Assets
Long-term receivables1		$	14		$	14		$	—		$	—		$	14		$	17		$	17		$	—		$	—		$	17
Notes receivable – related party4		104			104			—			—			104			107			107			—			—			107
Liabilities
Long-term debt5		8,392			9,411			—			7,447			1,964			8,106			9,801			—			7,716			2,085

1Includes current portion of long-term accounts receivable of $9 million at September 30, 2021 and $12 million at December 31, 2020.

2Includes current portion of long-term debt of $572 million at September 30, 2021 and $571 million at December 31, 2020.

3Includes current portion of long-term payables of $22 million at September 30, 2021 and $6 million at December 31, 2020.

4Includes current portion of notes receivable – related party of $7 million at September 30, 2021 and December 31, 2020.

5Includes current portion of long-term debt of $364 million at September 30, 2021 and December 31, 2020.

Consumers Energy Company

Financial Instruments [Line Items]

Financial Instruments

Financial Instruments

Presented in the following table are the carrying amounts and fair values, by level within the fair value hierarchy, of CMS Energy’s and Consumers’ financial instruments that are not recorded at fair value. The table excludes cash, cash equivalents, short-term financial instruments, and trade accounts receivable and payable whose carrying amounts approximate their fair values. For information about assets and liabilities recorded at fair value and for additional details regarding the fair value hierarchy, see Note 4, Fair Value Measurements.

In Millions
	September 30, 2021															December 31, 2020
	Carrying Amount			Fair Value												Carrying Amount			Fair Value
				Total			Level												Total			Level
							1			2			3									1			2			3
CMS Energy, including Consumers
Assets
Long-term receivables1		$	14		$	14		$	—		$	—		$	14		$	17		$	17		$	—		$	—		$	17
Liabilities
Long-term debt2		12,599			13,886			1,195			10,727			1,964			12,315			14,601			1,249			11,267			2,085
Long-term payables3		31			32			—			—			32			33			35			—			—			35
Consumers
Assets
Long-term receivables1		$	14		$	14		$	—		$	—		$	14		$	17		$	17		$	—		$	—		$	17
Notes receivable – related party4		104			104			—			—			104			107			107			—			—			107
Liabilities
Long-term debt5		8,392			9,411			—			7,447			1,964			8,106			9,801			—			7,716			2,085

1Includes current portion of long-term accounts receivable of $9 million at September 30, 2021 and $12 million at December 31, 2020.

2Includes current portion of long-term debt of $572 million at September 30, 2021 and $571 million at December 31, 2020.

3Includes current portion of long-term payables of $22 million at September 30, 2021 and $6 million at December 31, 2020.

4Includes current portion of notes receivable – related party of $7 million at September 30, 2021 and December 31, 2020.

5Includes current portion of long-term debt of $364 million at September 30, 2021 and December 31, 2020.

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Retirement Benefits

9 Months Ended

Sep. 30, 2021

Defined Benefit Plan Disclosure [Line Items]

Retirement Benefits

Retirement BenefitsCMS Energy and Consumers provide pension, OPEB, and other retirement benefits to employees under a number of different plans.

Costs: Presented in the following table are the costs (credits) and other changes in plan assets and benefit obligations incurred in CMS Energy’s and Consumers’ retirement benefits plans:

In Millions
	DB Pension Plans												OPEB Plan
	Three Months Ended						Nine Months Ended						Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020			2021			2020			2021			2020
CMS Energy, including Consumers
Net periodic cost (credit)
Service cost		$	14		$	12		$	41		$	37		$	5		$	4		$	14		$	12
Interest cost		14			20			44			61			6			8			17			25
Settlement loss		—			1			—			1			—			—			—			—
Expected return on plan assets		(51)			(47)			(155)			(143)			(28)			(25)			(82)			(75)
Amortization of:
Net loss		25			23			76			67			2			4			6			11
Prior service cost (credit)		1			—			3			1			(14)			(14)			(40)			(42)
Settlement loss		1			—			4			—			—			—			—			—
Net periodic cost (credit)		$	4		$	9		$	13		$	24		$	(29)		$	(23)		$	(85)		$	(69)
Consumers
Net periodic cost (credit)
Service cost		$	14		$	12		$	40		$	36		$	4		$	3		$	13		$	11
Interest cost		14			20			42			59			6			8			17			24
Expected return on plan assets		(49)			(45)			(147)			(136)			(26)			(23)			(77)			(70)
Amortization of:
Net loss		24			22			73			64			2			4			6			11
Prior service cost (credit)		1			—			3			1			(12)			(13)			(38)			(40)
Settlement loss		1			—			4			—			—			—			—			—
Net periodic cost (credit)		$	5		$	9		$	15		$	24		$	(26)		$	(21)		$	(79)		$	(64)

Consumers Energy Company

Defined Benefit Plan Disclosure [Line Items]

Retirement Benefits

Retirement BenefitsCMS Energy and Consumers provide pension, OPEB, and other retirement benefits to employees under a number of different plans.

Costs: Presented in the following table are the costs (credits) and other changes in plan assets and benefit obligations incurred in CMS Energy’s and Consumers’ retirement benefits plans:

In Millions
	DB Pension Plans												OPEB Plan
	Three Months Ended						Nine Months Ended						Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020			2021			2020			2021			2020
CMS Energy, including Consumers
Net periodic cost (credit)
Service cost		$	14		$	12		$	41		$	37		$	5		$	4		$	14		$	12
Interest cost		14			20			44			61			6			8			17			25
Settlement loss		—			1			—			1			—			—			—			—
Expected return on plan assets		(51)			(47)			(155)			(143)			(28)			(25)			(82)			(75)
Amortization of:
Net loss		25			23			76			67			2			4			6			11
Prior service cost (credit)		1			—			3			1			(14)			(14)			(40)			(42)
Settlement loss		1			—			4			—			—			—			—			—
Net periodic cost (credit)		$	4		$	9		$	13		$	24		$	(29)		$	(23)		$	(85)		$	(69)
Consumers
Net periodic cost (credit)
Service cost		$	14		$	12		$	40		$	36		$	4		$	3		$	13		$	11
Interest cost		14			20			42			59			6			8			17			24
Expected return on plan assets		(49)			(45)			(147)			(136)			(26)			(23)			(77)			(70)
Amortization of:
Net loss		24			22			73			64			2			4			6			11
Prior service cost (credit)		1			—			3			1			(12)			(13)			(38)			(40)
Settlement loss		1			—			4			—			—			—			—			—
Net periodic cost (credit)		$	5		$	9		$	15		$	24		$	(26)		$	(21)		$	(79)		$	(64)

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Income Taxes

9 Months Ended

Sep. 30, 2021

Income Taxes [Line Items]

Income Taxes

Income Taxes

Presented in the following table is a reconciliation of the statutory U.S. federal income tax rate to the effective income tax rate from continuing operations:

Nine Months Ended September 30	2021			2020
CMS Energy, including Consumers
U.S. federal income tax rate		21.0	%		21.0	%
Increase (decrease) in income taxes from:
State and local income taxes, net of federal effect		5.5			4.8
TCJA excess deferred taxes1		(5.8)			(4.3)
Production tax credits		(4.8)			(3.3)
Accelerated flow-through of regulatory tax benefits2		(3.2)			(1.6)
Research and development tax credits, net3		(0.3)			(1.6)
Refund of alternative minimum tax sequestration4		—			(1.4)
Other, net		0.4			0.1
Effective tax rate		12.8	%		13.7	%
Consumers
U.S. federal income tax rate		21.0	%		21.0	%
Increase (decrease) in income taxes from:
State and local income taxes, net of federal effect		5.2			5.0
TCJA excess deferred taxes1		(4.6)			(3.6)
Production tax credits		(3.5)			(1.9)
Accelerated flow-through of regulatory tax benefits2		(2.2)			(1.1)
Research and development tax credits, net3		(0.3)			(1.3)
Other, net		(0.2)			(0.3)
Effective tax rate		15.4	%		17.8	%

1In September 2020, the MPSC authorized Consumers to accelerate the amortization of a regulatory liability associated with unprotected, non‑property-related excess deferred income taxes resulting from the TCJA. The regulatory liability, which was previously scheduled to be amortized through 2029, will now be fully amortized by the end of 2022.

2In September 2020, the MPSC authorized Consumers to accelerate the amortization of income tax benefits associated with the cost to remove gas plant assets. These tax benefits, which were previously scheduled to be amortized through 2025, will now be fully amortized by the end of 2022.

3In March 2020, CMS Energy finalized a study of research and development tax credits for tax years 2012 through 2018. As a result, in 2020, CMS Energy, including Consumers, recognized a $9 million increase in the credit, net of reserves for uncertain tax positions. Of this amount, $8 million was recognized at Consumers.

4In January 2020, the IRS issued a decision restoring alternative minimum tax credit refunds sequestered in years prior to 2018. As a result, in 2020, CMS Energy recognized a $9 million income tax benefit for sequestered amounts related to its 2017 tax return. CMS Energy received the refund in April 2020.

Consumers Energy Company

Income Taxes [Line Items]

Income Taxes

Income Taxes

Presented in the following table is a reconciliation of the statutory U.S. federal income tax rate to the effective income tax rate from continuing operations:

Nine Months Ended September 30	2021			2020
CMS Energy, including Consumers
U.S. federal income tax rate		21.0	%		21.0	%
Increase (decrease) in income taxes from:
State and local income taxes, net of federal effect		5.5			4.8
TCJA excess deferred taxes1		(5.8)			(4.3)
Production tax credits		(4.8)			(3.3)
Accelerated flow-through of regulatory tax benefits2		(3.2)			(1.6)
Research and development tax credits, net3		(0.3)			(1.6)
Refund of alternative minimum tax sequestration4		—			(1.4)
Other, net		0.4			0.1
Effective tax rate		12.8	%		13.7	%
Consumers
U.S. federal income tax rate		21.0	%		21.0	%
Increase (decrease) in income taxes from:
State and local income taxes, net of federal effect		5.2			5.0
TCJA excess deferred taxes1		(4.6)			(3.6)
Production tax credits		(3.5)			(1.9)
Accelerated flow-through of regulatory tax benefits2		(2.2)			(1.1)
Research and development tax credits, net3		(0.3)			(1.3)
Other, net		(0.2)			(0.3)
Effective tax rate		15.4	%		17.8	%

1In September 2020, the MPSC authorized Consumers to accelerate the amortization of a regulatory liability associated with unprotected, non‑property-related excess deferred income taxes resulting from the TCJA. The regulatory liability, which was previously scheduled to be amortized through 2029, will now be fully amortized by the end of 2022.

2In September 2020, the MPSC authorized Consumers to accelerate the amortization of income tax benefits associated with the cost to remove gas plant assets. These tax benefits, which were previously scheduled to be amortized through 2025, will now be fully amortized by the end of 2022.

3In March 2020, CMS Energy finalized a study of research and development tax credits for tax years 2012 through 2018. As a result, in 2020, CMS Energy, including Consumers, recognized a $9 million increase in the credit, net of reserves for uncertain tax positions. Of this amount, $8 million was recognized at Consumers.

4In January 2020, the IRS issued a decision restoring alternative minimum tax credit refunds sequestered in years prior to 2018. As a result, in 2020, CMS Energy recognized a $9 million income tax benefit for sequestered amounts related to its 2017 tax return. CMS Energy received the refund in April 2020.

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Earnings Per Share - CMS Energy

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Earnings Per Share - CMS Energy

Earnings Per Share—CMS Energy

Presented in the following table are CMS Energy’s basic and diluted EPS computations based on income from continuing operations:

In Millions, Except Per Share Amounts
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Income available to common stockholders
Income from continuing operations		$	153		$	198		$	614		$	556
Less loss attributable to noncontrolling interests		(6)			(8)			(18)			(7)
Less preferred stock dividends		3			—			3			—
Income from continuing operations available to common stockholders – basic and diluted		$	156		$	206		$	629		$	563
Average common shares outstanding
Weighted-average shares – basic		289.1			285.6			288.9			284.8
Add dilutive nonvested stock awards		0.5			0.8			0.5			0.9
Add dilutive forward equity sale contracts		—			0.5			—			0.6
Weighted-average shares – diluted		289.6			286.9			289.4			286.3
Income from continuing operations per average common share available to common stockholders
Basic		$	0.54		$	0.72		$	2.18		$	1.98
Diluted		0.54			0.72			2.18			1.97

Nonvested Stock Awards

CMS Energy’s nonvested stock awards are composed of participating and non‑participating securities. The participating securities accrue cash dividends when common stockholders receive dividends. Since the recipient is not required to return the dividends to CMS Energy if the recipient forfeits the award, the nonvested stock awards are considered participating securities. As such, the participating nonvested stock awards were included in the computation of basic EPS. The non‑participating securities accrue stock dividends that vest concurrently with the stock award. If the recipient forfeits the award, the stock dividends accrued on the non‑participating securities are also forfeited. Accordingly, the non‑participating awards and stock dividends were included in the computation of diluted EPS, but not in the computation of basic EPS.

Forward Equity Sale Contracts

CMS Energy has entered into forward equity sale contracts. These forward equity sale contracts are non‑participating securities. While the forward sale price in the forward equity sale contract is decreased on certain dates by certain predetermined amounts to reflect expected dividend payments, these price adjustments were set upon inception of the agreement and the forward contract does not give the owner the right to participate in undistributed earnings. Accordingly, the forward equity sale contracts were included in the computation of diluted EPS, but not in the computation of basic EPS. For further details on the forward equity sale contracts, see Note 3, Financings and Capitalization.

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Revenue

9 Months Ended

Sep. 30, 2021

Disaggregation of Revenue [Line Items]

Revenue

RevenuePresented in the following tables are the components of operating revenue:

In Millions
Three Months Ended September 30, 2021	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	1,416		$	224		$	—		$	1,640
Other		—			—			31			31
Revenue recognized from contracts with customers		$	1,416		$	224		$	31		$	1,671
Leasing income		—			—			50			50
Financing income		2			1			—			3
Consumers alternative-revenue programs		1			—			—			1
Total operating revenue – CMS Energy		$	1,419		$	225		$	81		$	1,725
Consumers
Consumers utility revenue
Residential		$	718		$	143					$	861
Commercial		456			36						492
Industrial		167			5						172
Other		75			40						115
Revenue recognized from contracts with customers		$	1,416		$	224					$	1,640
Financing income		2			1						3
Alternative-revenue programs		1			—						1
Total operating revenue – Consumers		$	1,419		$	225					$	1,644

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $35 million for the three months ended September 30, 2021.

In Millions
Three Months Ended September 30, 2020	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	1,255		$	192		$	—		$	1,447
Other		—			—			21			21
Revenue recognized from contracts with customers		$	1,255		$	192		$	21		$	1,468
Leasing income		—			—			36			36
Financing income		2			1			—			3
Total operating revenue – CMS Energy		$	1,257		$	193		$	57		$	1,507
Consumers
Consumers utility revenue
Residential		$	624		$	120					$	744
Commercial		413			27						440
Industrial		161			5						166
Other		57			40						97
Revenue recognized from contracts with customers		$	1,255		$	192					$	1,447
Financing income		2			1						3
Total operating revenue – Consumers		$	1,257		$	193					$	1,450

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $23 million for the three months ended September 30, 2020.

In Millions
Nine Months Ended September 30, 2021	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	3,705		$	1,357		$	—		$	5,062
Other		—			—			86			86
Revenue recognized from contracts with customers		$	3,705		$	1,357		$	86		$	5,148
Leasing income		—			—			136			136
Financing income		7			4			—			11
Consumers alternative-revenue programs		1			—			—			1
Total operating revenue – CMS Energy		$	3,713		$	1,361		$	222		$	5,296
Consumers
Consumers utility revenue
Residential		$	1,847		$	917					$	2,764
Commercial		1,191			258						1,449
Industrial		458			36						494
Other		209			146						355
Revenue recognized from contracts with customers		$	3,705		$	1,357					$	5,062
Financing income		7			4						11
Alternative-revenue programs		1			—						1
Total operating revenue – Consumers		$	3,713		$	1,361					$	5,074

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $94 million for the nine months ended September 30, 2021.

In Millions
Nine Months Ended September 30, 2020	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	3,300		$	1,212		$	—		$	4,512
Other		—			—			57			57
Revenue recognized from contracts with customers		$	3,300		$	1,212		$	57		$	4,569
Leasing income		—			—			110			110
Financing income		7			5			—			12
Total operating revenue – CMS Energy		$	3,307		$	1,217		$	167		$	4,691
Consumers
Consumers utility revenue
Residential		$	1,612		$	819					$	2,431
Commercial		1,093			227						1,320
Industrial		427			32						459
Other		168			134						302
Revenue recognized from contracts with customers		$	3,300		$	1,212					$	4,512
Financing income		7			5						12
Total operating revenue – Consumers		$	3,307		$	1,217					$	4,524

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $69 million for the nine months ended September 30, 2020.

Electric and Gas Utilities

Consumers Utility Revenue: Consumers recognizes revenue primarily from the sale of electric and gas utility services at tariff-based rates regulated by the MPSC. Consumers’ customer base consists of a mix of residential, commercial, and diversified industrial customers. Consumers’ tariff-based sales performance obligations are described below.

•Consumers has performance obligations for the service of standing ready to deliver electricity or natural gas to customers, and it satisfies these performance obligations over time. Consumers recognizes revenue at a fixed rate as it provides these services. These arrangements generally do not have fixed terms and remain in effect as long as the customer consumes the utility service. The rates are set by the MPSC through the rate-making process and represent the stand-alone selling price of Consumers’ service to stand ready to deliver.

•Consumers has performance obligations for the service of delivering the commodity of electricity or natural gas to customers, and it satisfies these performance obligations upon delivery. Consumers recognizes revenue at a price per unit of electricity or natural gas delivered, based on

the tariffs established by the MPSC. These arrangements generally do not have fixed terms and remain in effect as long as the customer consumes the utility service. The rates are set by the MPSC through the rate-making process and represent the stand-alone selling price of a bundled product comprising the commodity, electricity or natural gas, and the service of delivering such commodity.

In some instances, Consumers has specific fixed-term contracts with large commercial and industrial customers to provide electricity or gas at certain tariff rates or to provide gas transportation services at contracted rates. The amount of electricity and gas to be delivered under these contracts and the associated future revenue to be received are generally dependent on the customers’ needs. Accordingly, Consumers recognizes revenues at the tariff or contracted rate as electricity or gas is delivered to the customer. Consumers also has other miscellaneous contracts with customers related to pole and other property rentals, appliance service plans, and utility contract work. Generally, these contracts are short term or evergreen in nature.

Accounts Receivable and Unbilled Revenues: Accounts receivable comprise trade receivables and unbilled receivables. CMS Energy and Consumers record their accounts receivable at cost less an allowance for uncollectible accounts. The allowance is increased for uncollectible accounts expense and decreased for account write-offs net of recoveries. CMS Energy and Consumers establish the allowance based on historical losses, management’s assessment of existing economic conditions, customer payment trends, and reasonable and supported forecast information. CMS Energy and Consumers assess late payment fees on trade receivables based on contractual past-due terms established with customers. Accounts are written off when deemed uncollectible, which is generally when they become six months past due. CMS Energy and Consumers recorded uncollectible accounts expense of $6 million for the three months ended September 30, 2021 and $5 million for the three months ended September 30, 2020. CMS Energy and Consumers recorded uncollectible accounts expense of $17 million for the nine months ended September 30, 2021 and $18 million for the nine months ended September 30, 2020.

Consumers’ customers are billed monthly in cycles having billing dates that do not generally coincide with the end of a calendar month. This results in customers having received electricity or natural gas that they have not been billed for as of the month-end. Consumers estimates its unbilled revenues by applying an average billed rate to total unbilled deliveries for each customer class. Unbilled revenues, which are recorded as accounts receivable and accrued revenue on CMS Energy’s and Consumers’ consolidated balance sheets, were $340 million at September 30, 2021 and $437 million at December 31, 2020.

Consumers Energy Company

Disaggregation of Revenue [Line Items]

Revenue

RevenuePresented in the following tables are the components of operating revenue:

In Millions
Three Months Ended September 30, 2021	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	1,416		$	224		$	—		$	1,640
Other		—			—			31			31
Revenue recognized from contracts with customers		$	1,416		$	224		$	31		$	1,671
Leasing income		—			—			50			50
Financing income		2			1			—			3
Consumers alternative-revenue programs		1			—			—			1
Total operating revenue – CMS Energy		$	1,419		$	225		$	81		$	1,725
Consumers
Consumers utility revenue
Residential		$	718		$	143					$	861
Commercial		456			36						492
Industrial		167			5						172
Other		75			40						115
Revenue recognized from contracts with customers		$	1,416		$	224					$	1,640
Financing income		2			1						3
Alternative-revenue programs		1			—						1
Total operating revenue – Consumers		$	1,419		$	225					$	1,644

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $35 million for the three months ended September 30, 2021.

In Millions
Three Months Ended September 30, 2020	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	1,255		$	192		$	—		$	1,447
Other		—			—			21			21
Revenue recognized from contracts with customers		$	1,255		$	192		$	21		$	1,468
Leasing income		—			—			36			36
Financing income		2			1			—			3
Total operating revenue – CMS Energy		$	1,257		$	193		$	57		$	1,507
Consumers
Consumers utility revenue
Residential		$	624		$	120					$	744
Commercial		413			27						440
Industrial		161			5						166
Other		57			40						97
Revenue recognized from contracts with customers		$	1,255		$	192					$	1,447
Financing income		2			1						3
Total operating revenue – Consumers		$	1,257		$	193					$	1,450

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $23 million for the three months ended September 30, 2020.

In Millions
Nine Months Ended September 30, 2021	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	3,705		$	1,357		$	—		$	5,062
Other		—			—			86			86
Revenue recognized from contracts with customers		$	3,705		$	1,357		$	86		$	5,148
Leasing income		—			—			136			136
Financing income		7			4			—			11
Consumers alternative-revenue programs		1			—			—			1
Total operating revenue – CMS Energy		$	3,713		$	1,361		$	222		$	5,296
Consumers
Consumers utility revenue
Residential		$	1,847		$	917					$	2,764
Commercial		1,191			258						1,449
Industrial		458			36						494
Other		209			146						355
Revenue recognized from contracts with customers		$	3,705		$	1,357					$	5,062
Financing income		7			4						11
Alternative-revenue programs		1			—						1
Total operating revenue – Consumers		$	3,713		$	1,361					$	5,074

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $94 million for the nine months ended September 30, 2021.

In Millions
Nine Months Ended September 30, 2020	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	3,300		$	1,212		$	—		$	4,512
Other		—			—			57			57
Revenue recognized from contracts with customers		$	3,300		$	1,212		$	57		$	4,569
Leasing income		—			—			110			110
Financing income		7			5			—			12
Total operating revenue – CMS Energy		$	3,307		$	1,217		$	167		$	4,691
Consumers
Consumers utility revenue
Residential		$	1,612		$	819					$	2,431
Commercial		1,093			227						1,320
Industrial		427			32						459
Other		168			134						302
Revenue recognized from contracts with customers		$	3,300		$	1,212					$	4,512
Financing income		7			5						12
Total operating revenue – Consumers		$	3,307		$	1,217					$	4,524

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $69 million for the nine months ended September 30, 2020.

Electric and Gas Utilities

Consumers Utility Revenue: Consumers recognizes revenue primarily from the sale of electric and gas utility services at tariff-based rates regulated by the MPSC. Consumers’ customer base consists of a mix of residential, commercial, and diversified industrial customers. Consumers’ tariff-based sales performance obligations are described below.

•Consumers has performance obligations for the service of standing ready to deliver electricity or natural gas to customers, and it satisfies these performance obligations over time. Consumers recognizes revenue at a fixed rate as it provides these services. These arrangements generally do not have fixed terms and remain in effect as long as the customer consumes the utility service. The rates are set by the MPSC through the rate-making process and represent the stand-alone selling price of Consumers’ service to stand ready to deliver.

•Consumers has performance obligations for the service of delivering the commodity of electricity or natural gas to customers, and it satisfies these performance obligations upon delivery. Consumers recognizes revenue at a price per unit of electricity or natural gas delivered, based on

the tariffs established by the MPSC. These arrangements generally do not have fixed terms and remain in effect as long as the customer consumes the utility service. The rates are set by the MPSC through the rate-making process and represent the stand-alone selling price of a bundled product comprising the commodity, electricity or natural gas, and the service of delivering such commodity.

In some instances, Consumers has specific fixed-term contracts with large commercial and industrial customers to provide electricity or gas at certain tariff rates or to provide gas transportation services at contracted rates. The amount of electricity and gas to be delivered under these contracts and the associated future revenue to be received are generally dependent on the customers’ needs. Accordingly, Consumers recognizes revenues at the tariff or contracted rate as electricity or gas is delivered to the customer. Consumers also has other miscellaneous contracts with customers related to pole and other property rentals, appliance service plans, and utility contract work. Generally, these contracts are short term or evergreen in nature.

Accounts Receivable and Unbilled Revenues: Accounts receivable comprise trade receivables and unbilled receivables. CMS Energy and Consumers record their accounts receivable at cost less an allowance for uncollectible accounts. The allowance is increased for uncollectible accounts expense and decreased for account write-offs net of recoveries. CMS Energy and Consumers establish the allowance based on historical losses, management’s assessment of existing economic conditions, customer payment trends, and reasonable and supported forecast information. CMS Energy and Consumers assess late payment fees on trade receivables based on contractual past-due terms established with customers. Accounts are written off when deemed uncollectible, which is generally when they become six months past due. CMS Energy and Consumers recorded uncollectible accounts expense of $6 million for the three months ended September 30, 2021 and $5 million for the three months ended September 30, 2020. CMS Energy and Consumers recorded uncollectible accounts expense of $17 million for the nine months ended September 30, 2021 and $18 million for the nine months ended September 30, 2020.

Consumers’ customers are billed monthly in cycles having billing dates that do not generally coincide with the end of a calendar month. This results in customers having received electricity or natural gas that they have not been billed for as of the month-end. Consumers estimates its unbilled revenues by applying an average billed rate to total unbilled deliveries for each customer class. Unbilled revenues, which are recorded as accounts receivable and accrued revenue on CMS Energy’s and Consumers’ consolidated balance sheets, were $340 million at September 30, 2021 and $437 million at December 31, 2020.

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Cash And Cash Equivalents

9 Months Ended

Sep. 30, 2021

Cash and Cash Equivalents [Line Items]

Cash And Cash Equivalents

Cash and Cash Equivalents

Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:

In Millions
	September 30, 2021			December 31, 2020
CMS Energy, including Consumers
Cash and cash equivalents		$	102		$	32
Restricted cash and cash equivalents		30			17
Current assets held for sale		104			136
Cash and cash equivalents, including restricted amounts – CMS Energy		$	236		$	185
Consumers
Cash and cash equivalents		$	29		$	20
Restricted cash and cash equivalents		26			15
Cash and cash equivalents, including restricted amounts – Consumers		$	55		$	35

Cash and Cash Equivalents: Cash and cash equivalents include short-term, highly liquid investments with original maturities of three months or less.

Restricted Cash and Cash Equivalents: Restricted cash and cash equivalents are held primarily for the repayment of securitization bonds and funds held in escrow. Cash and cash equivalents may also be restricted to pay other contractual obligations such as leasing of coal railcars. These amounts are classified as current assets since they relate to payments that could or will occur within one year.

Current Assets Held for Sale: In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. As a result, EnerBank’s cash and cash equivalents are presented as assets held for sale on CMS Energy’s consolidated balance sheets at September 30, 2021 and December 31, 2020. For information regarding the merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations.

Consumers Energy Company

Cash and Cash Equivalents [Line Items]

Cash And Cash Equivalents

Cash and Cash Equivalents

Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:

In Millions
	September 30, 2021			December 31, 2020
CMS Energy, including Consumers
Cash and cash equivalents		$	102		$	32
Restricted cash and cash equivalents		30			17
Current assets held for sale		104			136
Cash and cash equivalents, including restricted amounts – CMS Energy		$	236		$	185
Consumers
Cash and cash equivalents		$	29		$	20
Restricted cash and cash equivalents		26			15
Cash and cash equivalents, including restricted amounts – Consumers		$	55		$	35

Cash and Cash Equivalents: Cash and cash equivalents include short-term, highly liquid investments with original maturities of three months or less.

Restricted Cash and Cash Equivalents: Restricted cash and cash equivalents are held primarily for the repayment of securitization bonds and funds held in escrow. Cash and cash equivalents may also be restricted to pay other contractual obligations such as leasing of coal railcars. These amounts are classified as current assets since they relate to payments that could or will occur within one year.

Current Assets Held for Sale: In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. As a result, EnerBank’s cash and cash equivalents are presented as assets held for sale on CMS Energy’s consolidated balance sheets at September 30, 2021 and December 31, 2020. For information regarding the merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations.

XML

Reportable Segments

9 Months Ended

Sep. 30, 2021

Segment Reporting Information [Line Items]

Reportable Segments

Reportable SegmentsReportable segments consist of business units defined by the products and services they offer. CMS Energy and Consumers evaluate the performance of each segment based on its contribution to net income available to CMS Energy’s common stockholders.

CMS Energy

The segments reported for CMS Energy are:

•electric utility, consisting of regulated activities associated with the generation, purchase, distribution, and sale of electricity in Michigan

•gas utility, consisting of regulated activities associated with the purchase, transmission, storage, distribution, and sale of natural gas in Michigan

•enterprises, consisting of various subsidiaries engaging in domestic independent power production, including the development and operation of renewable generation, and the marketing of independent power production

In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. As a result, EnerBank is not included in the composition of CMS Energy’s reportable segments. EnerBank’s results of operations are presented as income from discontinued operations on CMS Energy’s consolidated statements of income for the three and nine months ended September 30, 2021 and 2020. The assets and liabilities of EnerBank are presented as held for sale on CMS Energy’s consolidated balance sheets at September 30, 2021 and December 31, 2020. For information regarding the merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations.

CMS Energy presents corporate interest and other expenses, discontinued operations, and Consumers’ other consolidated entities within other reconciling items. Beginning in 2021, CMS Land, which holds the environmental remediation obligations at Bay Harbor, will be included within other reconciling items rather than within the enterprises segment. This change was not material and was made to align segment reporting with the legal organization and internal reporting of CMS Energy.

Consumers

The segments reported for Consumers are:

•electric utility, consisting of regulated activities associated with the generation, purchase, distribution, and sale of electricity in Michigan

•gas utility, consisting of regulated activities associated with the purchase, transmission, storage, distribution, and sale of natural gas in Michigan

Consumers’ other consolidated entities are presented within other reconciling items.

Presented in the following tables is financial information by segment:

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
CMS Energy, including Consumers
Operating revenue
Electric utility		$	1,419		$	1,257		$	3,713		$	3,307
Gas utility		225			193			1,361			1,217
Enterprises		81			57			222			167
Total operating revenue – CMS Energy		$	1,725		$	1,507		$	5,296		$	4,691
Consumers
Operating revenue
Electric utility		$	1,419		$	1,257		$	3,713		$	3,307
Gas utility		225			193			1,361			1,217
Total operating revenue – Consumers		$	1,644		$	1,450		$	5,074		$	4,524
CMS Energy, including Consumers
Net income (loss) available to common stockholders
Electric utility		$	195		$	226		$	504		$	463
Gas utility		(9)			4			208			162
Enterprises		7			13			26			34
Other reconciling items		(7)			(25)			(27)			(62)
Total net income available to common stockholders – CMS Energy		$	186		$	218		$	711		$	597
Consumers
Net income (loss) available to common stockholder
Electric utility		$	195		$	226		$	504		$	463
Gas utility		(9)			4			208			162
Other reconciling items		—			—			(1)			(1)
Total net income available to common stockholder – Consumers		$	186		$	230		$	711		$	624

In Millions
	September 30, 2021			December 31, 2020
CMS Energy, including Consumers
Plant, property, and equipment, gross
Electric utility1		$	17,992		$	17,155
Gas utility1		10,317			9,581
Enterprises		1,119			1,113
Other reconciling items		22			21
Total plant, property, and equipment, gross – CMS Energy		$	29,450		$	27,870
Consumers
Plant, property, and equipment, gross
Electric utility1		$	17,992		$	17,155
Gas utility1		10,317			9,581
Other reconciling items		22			21
Total plant, property, and equipment, gross – Consumers		$	28,331		$	26,757
CMS Energy, including Consumers
Total assets
Electric utility1		$	16,092		$	15,829
Gas utility1		9,969			9,429
Enterprises		1,275			1,276
Other reconciling items		3,177			3,132
Total assets – CMS Energy		$	30,513		$	29,666
Consumers
Total assets
Electric utility1		$	16,154		$	15,893
Gas utility1		10,017			9,477
Other reconciling items		18			29
Total assets – Consumers		$	26,189		$	25,399

1Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.

Consumers Energy Company

Segment Reporting Information [Line Items]

Reportable Segments

Reportable SegmentsReportable segments consist of business units defined by the products and services they offer. CMS Energy and Consumers evaluate the performance of each segment based on its contribution to net income available to CMS Energy’s common stockholders.

CMS Energy

The segments reported for CMS Energy are:

•electric utility, consisting of regulated activities associated with the generation, purchase, distribution, and sale of electricity in Michigan

•gas utility, consisting of regulated activities associated with the purchase, transmission, storage, distribution, and sale of natural gas in Michigan

•enterprises, consisting of various subsidiaries engaging in domestic independent power production, including the development and operation of renewable generation, and the marketing of independent power production

In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. As a result, EnerBank is not included in the composition of CMS Energy’s reportable segments. EnerBank’s results of operations are presented as income from discontinued operations on CMS Energy’s consolidated statements of income for the three and nine months ended September 30, 2021 and 2020. The assets and liabilities of EnerBank are presented as held for sale on CMS Energy’s consolidated balance sheets at September 30, 2021 and December 31, 2020. For information regarding the merger of EnerBank, see Note 13, Exit Activities and Discontinued Operations.

CMS Energy presents corporate interest and other expenses, discontinued operations, and Consumers’ other consolidated entities within other reconciling items. Beginning in 2021, CMS Land, which holds the environmental remediation obligations at Bay Harbor, will be included within other reconciling items rather than within the enterprises segment. This change was not material and was made to align segment reporting with the legal organization and internal reporting of CMS Energy.

Consumers

The segments reported for Consumers are:

•electric utility, consisting of regulated activities associated with the generation, purchase, distribution, and sale of electricity in Michigan

•gas utility, consisting of regulated activities associated with the purchase, transmission, storage, distribution, and sale of natural gas in Michigan

Consumers’ other consolidated entities are presented within other reconciling items.

Presented in the following tables is financial information by segment:

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
CMS Energy, including Consumers
Operating revenue
Electric utility		$	1,419		$	1,257		$	3,713		$	3,307
Gas utility		225			193			1,361			1,217
Enterprises		81			57			222			167
Total operating revenue – CMS Energy		$	1,725		$	1,507		$	5,296		$	4,691
Consumers
Operating revenue
Electric utility		$	1,419		$	1,257		$	3,713		$	3,307
Gas utility		225			193			1,361			1,217
Total operating revenue – Consumers		$	1,644		$	1,450		$	5,074		$	4,524
CMS Energy, including Consumers
Net income (loss) available to common stockholders
Electric utility		$	195		$	226		$	504		$	463
Gas utility		(9)			4			208			162
Enterprises		7			13			26			34
Other reconciling items		(7)			(25)			(27)			(62)
Total net income available to common stockholders – CMS Energy		$	186		$	218		$	711		$	597
Consumers
Net income (loss) available to common stockholder
Electric utility		$	195		$	226		$	504		$	463
Gas utility		(9)			4			208			162
Other reconciling items		—			—			(1)			(1)
Total net income available to common stockholder – Consumers		$	186		$	230		$	711		$	624

In Millions
	September 30, 2021			December 31, 2020
CMS Energy, including Consumers
Plant, property, and equipment, gross
Electric utility1		$	17,992		$	17,155
Gas utility1		10,317			9,581
Enterprises		1,119			1,113
Other reconciling items		22			21
Total plant, property, and equipment, gross – CMS Energy		$	29,450		$	27,870
Consumers
Plant, property, and equipment, gross
Electric utility1		$	17,992		$	17,155
Gas utility1		10,317			9,581
Other reconciling items		22			21
Total plant, property, and equipment, gross – Consumers		$	28,331		$	26,757
CMS Energy, including Consumers
Total assets
Electric utility1		$	16,092		$	15,829
Gas utility1		9,969			9,429
Enterprises		1,275			1,276
Other reconciling items		3,177			3,132
Total assets – CMS Energy		$	30,513		$	29,666
Consumers
Total assets
Electric utility1		$	16,154		$	15,893
Gas utility1		10,017			9,477
Other reconciling items		18			29
Total assets – Consumers		$	26,189		$	25,399

1Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.

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Variable Interest Entities

9 Months Ended

Sep. 30, 2021

Variable Interest Entities [Abstract]

Variable Interest Entities

Variable Interest Entities

CMS Enterprises has a 51-percent ownership interest in Aviator Wind Equity Holdings, which holds a Class B membership interest in Aviator Wind, a 525-MW wind generation project in Coke County, Texas. The Class A membership interest in Aviator Wind is held by a tax equity investor, BHE Renewables, LLC, a subsidiary of Berkshire Hathaway Energy Company. Earnings, tax attributes, and cash flows generated by Aviator Wind are allocated among and distributed to the membership classes in accordance with the ratios specified in the associated limited liability company operating agreement; these ratios change over time and are not representative of the ownership interest percentages of each membership class.

Aviator Wind Equity Holdings and Aviator Wind represent VIEs. In accordance with the associated limited liability company operating agreement, the tax equity investor is guaranteed preferred returns from Aviator Wind. However, CMS Enterprises manages and controls the operating activities of Aviator Wind Equity Holdings and, ultimately, Aviator Wind. As a result, CMS Enterprises is the primary beneficiary of Aviator Wind Equity Holdings and Aviator Wind, as it has the power to direct the activities that most significantly impact the economic performance of the companies, as well as the obligation to absorb losses or the right to receive benefits from the companies. CMS Enterprises consolidates Aviator Wind Equity Holdings and Aviator Wind and presents the Class A membership interest and 49 percent of the Class B membership interest in Aviator Wind as noncontrolling interests.

Presented in the following table are the carrying values of the VIEs’ assets and liabilities included on CMS Energy’s consolidated balance sheets:

In Millions
	September 30, 2021			December 31, 2020
Current
Cash and cash equivalents		$	15		$	7
Accounts receivable		8			5
Prepayments and other current assets		1			1
Non-current
Plant, property, and equipment, net		675			692
Total assets1		$	699		$	705
Current
Accounts payable		$	13		$	3
Non-current
Asset retirement obligations		20			19
Total liabilities		$	33		$	22

1Assets may be used only to meet VIEs’ obligations and commitments.

CMS Enterprises is obligated under certain indemnities that protect the tax equity investor against losses incurred as a result of breaches of representations and warranties provided by Aviator Wind Equity Holdings and its subsidiaries. For additional details on these indemnity obligations, see Note 2, Contingencies and Commitments—Guarantees.

Other VIEs: CMS Energy has variable interests in T.E.S. Filer City, Grayling, Genesee, and Craven. While CMS Energy owns 50 percent of each partnership, it is not the primary beneficiary of any of these partnerships because decision making is shared among unrelated parties, and no one party has the ability

to direct the activities that most significantly impact the entities’ economic performance, such as operations and maintenance, plant dispatch, and fuel strategy. The partners must agree on all major decisions for each of the partnerships.

Presented in the following table is information about these partnerships:

Name	Nature of the Entity	Nature of CMS Energy’s Involvement
T.E.S. Filer City	Coal-fueled power generator	Long-term PPA between partnership and Consumers
		Employee assignment agreement
Grayling	Wood waste-fueled power generator	Long-term PPA between partnership and Consumers
		Reduced dispatch agreement with Consumers1
		Operating and management contract
Genesee	Wood waste-fueled power generator	Long-term PPA between partnership and Consumers
		Reduced dispatch agreement with Consumers1
		Operating and management contract
Craven	Wood waste-fueled power generator	Operating and management contract

1Reduced dispatch agreements allow the facilities to be dispatched based on the market price of power compared with the cost of production of the plants. This results in fuel cost savings that each partnership shares with Consumers’ customers.

The creditors of these partnerships do not have recourse to the general credit of CMS Energy or Consumers. CMS Energy and Consumers have not provided any financial or other support during the periods presented that was not previously contractually required.

CMS Energy’s investment in these partnerships is included in investments on its consolidated balance sheets in the amount of $73 million at September 30, 2021 and $70 million at December 31, 2020.

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Exit Activities and Discontinued Operations

9 Months Ended

Sep. 30, 2021

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Exit Activities and Discontinued Operations

Exit Activities and Discontinued Operations

Exit Activities: Under its Clean Energy Plan, Consumers plans to retire the D.E. Karn coal-fueled electric generating units in 2023. In 2019, Consumers announced a retention incentive program to ensure necessary staffing at the D.E. Karn generating complex through the anticipated retirement of the coal-fueled generating units. Based on the number of employees that have chosen to participate, the aggregate cost of the program through 2023 is estimated to be $35 million. In its order in Consumers’ 2020 electric rate case, the MPSC approved deferred accounting treatment for these costs; Consumers began deferring these costs as a regulatory asset in 2021. Within its 2021 IRP, Consumers proposes to retire the J.H. Campbell coal-fueled generating units. No retention incentive costs related to this retirement will be recognized unless Consumers’ 2021 IRP is approved by the MPSC.

As of September 30, 2021, the cumulative cost incurred and charged to expense related to the D.E. Karn retention incentive program was $16 million. Additionally, an amount of $4 million has been capitalized as a cost of plant, property, and equipment and an amount of $5 million has been deferred as a regulatory asset. Presented in the following table is a reconciliation of the retention benefit liability recorded in other liabilities on Consumers’ consolidated balance sheets:

In Millions
	Nine Months Ended
September 30	2021			2020
Retention benefit liability at beginning of period		$	11		$	4
Costs incurred and charged to maintenance and other operating expenses		—			11
Costs deferred as a regulatory asset1		5			—
Costs incurred and capitalized		1			1
Retention benefit liability at the end of the period2		$	17		$	16

1Includes $1 million for the three months ended September 30, 2021.

2Includes current portion of other liabilities of $5 million at September 30, 2021 and $7 million at September 30, 2020.

Discontinued Operations: In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. CMS Energy received proceeds of approximately $1.0 billion from the transaction and expects to recognize a pre-tax gain of approximately $660 million in the fourth quarter of 2021, both of which may be impacted by customary post-closing adjustments. CMS Energy intends to use the proceeds from the merger to fund key initiatives in its core energy business related to safety, reliability, and its clean energy transformation. Under the merger agreement, CMS Energy agreed to indemnify Regions Bank for losses resulting from various matters, primarily breaches of representations and warranties and covenants. CMS Energy considers it remote that it would be required to indemnify or incur substantial losses related to these matters.

As a result of the agreement, EnerBank’s results of operations are presented as income from discontinued operations on CMS Energy’s consolidated statements of income for the three and nine months ended September 30, 2021 and 2020. The assets and liabilities of EnerBank are presented as held for sale on CMS Energy’s consolidated balance sheets at September 30, 2021 and December 31, 2020. Also, as a result of the agreement, EnerBank is not included in the composition of CMS Energy’s reportable segments. For more information regarding the composition of CMS Energy’s reportable segments, see Note 11, Reportable Segments.

The table below presents the financial results of EnerBank included in income from discontinued operations:

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Operating revenue		$	70		$	68		$	209		$	191
Expenses
Operating expenses		17			39			60			104
Interest expense		11			13			34			43
Income before income taxes		$	42		$	16		$	115		$	44
Transaction costs		(3)			—			(8)			—
Income from discontinued operations before income taxes		$	39		$	16		$	107		$	44
Income tax expense		9			4			25			10
Income from discontinued operations, net of tax		$	30		$	12		$	82		$	34

The table below presents the aggregate carrying amounts for the major classes of assets and liabilities held for sale related to EnerBank:

In Millions
	September 30, 2021			December 31, 2020
Assets
Current
Cash and cash equivalents		$	104		$	136
Accounts receivable and other current assets		143			18
Notes receivable, less allowance of $28 in 2021 and $32 in 2020		247			275
Total current assets		$	494		$	429
Non‑current
Plant, property, and equipment, net		$	29		$	22
Notes receivable, less allowance of $84 in 2021 and $91 in 2020		2,532			2,612
Other non‑current assets		45			46
Total non‑current assets		$	2,606		$	2,680
Total assets		$	3,100		$	3,109
Liabilities
Current
Current portion of long-term debt		$	1,199		$	915
Accounts payable and other current liabilities		34			38
Total current liabilities		$	1,233		$	953
Non‑current
Long-term debt		$	1,522		$	1,890
Other non‑current liabilities		1			4
Total non‑current liabilities		$	1,523		$	1,894
Total liabilities		$	2,756		$	2,847

Consumers Energy Company

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Exit Activities and Discontinued Operations

Exit Activities and Discontinued Operations

Exit Activities: Under its Clean Energy Plan, Consumers plans to retire the D.E. Karn coal-fueled electric generating units in 2023. In 2019, Consumers announced a retention incentive program to ensure necessary staffing at the D.E. Karn generating complex through the anticipated retirement of the coal-fueled generating units. Based on the number of employees that have chosen to participate, the aggregate cost of the program through 2023 is estimated to be $35 million. In its order in Consumers’ 2020 electric rate case, the MPSC approved deferred accounting treatment for these costs; Consumers began deferring these costs as a regulatory asset in 2021. Within its 2021 IRP, Consumers proposes to retire the J.H. Campbell coal-fueled generating units. No retention incentive costs related to this retirement will be recognized unless Consumers’ 2021 IRP is approved by the MPSC.

As of September 30, 2021, the cumulative cost incurred and charged to expense related to the D.E. Karn retention incentive program was $16 million. Additionally, an amount of $4 million has been capitalized as a cost of plant, property, and equipment and an amount of $5 million has been deferred as a regulatory asset. Presented in the following table is a reconciliation of the retention benefit liability recorded in other liabilities on Consumers’ consolidated balance sheets:

In Millions
	Nine Months Ended
September 30	2021			2020
Retention benefit liability at beginning of period		$	11		$	4
Costs incurred and charged to maintenance and other operating expenses		—			11
Costs deferred as a regulatory asset1		5			—
Costs incurred and capitalized		1			1
Retention benefit liability at the end of the period2		$	17		$	16

1Includes $1 million for the three months ended September 30, 2021.

2Includes current portion of other liabilities of $5 million at September 30, 2021 and $7 million at September 30, 2020.

Discontinued Operations: In June 2021, CMS Energy entered into an agreement for EnerBank to merge with Regions Bank. The merger was completed on October 1, 2021. CMS Energy received proceeds of approximately $1.0 billion from the transaction and expects to recognize a pre-tax gain of approximately $660 million in the fourth quarter of 2021, both of which may be impacted by customary post-closing adjustments. CMS Energy intends to use the proceeds from the merger to fund key initiatives in its core energy business related to safety, reliability, and its clean energy transformation. Under the merger agreement, CMS Energy agreed to indemnify Regions Bank for losses resulting from various matters, primarily breaches of representations and warranties and covenants. CMS Energy considers it remote that it would be required to indemnify or incur substantial losses related to these matters.

As a result of the agreement, EnerBank’s results of operations are presented as income from discontinued operations on CMS Energy’s consolidated statements of income for the three and nine months ended September 30, 2021 and 2020. The assets and liabilities of EnerBank are presented as held for sale on CMS Energy’s consolidated balance sheets at September 30, 2021 and December 31, 2020. Also, as a result of the agreement, EnerBank is not included in the composition of CMS Energy’s reportable segments. For more information regarding the composition of CMS Energy’s reportable segments, see Note 11, Reportable Segments.

The table below presents the financial results of EnerBank included in income from discontinued operations:

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Operating revenue		$	70		$	68		$	209		$	191
Expenses
Operating expenses		17			39			60			104
Interest expense		11			13			34			43
Income before income taxes		$	42		$	16		$	115		$	44
Transaction costs		(3)			—			(8)			—
Income from discontinued operations before income taxes		$	39		$	16		$	107		$	44
Income tax expense		9			4			25			10
Income from discontinued operations, net of tax		$	30		$	12		$	82		$	34

The table below presents the aggregate carrying amounts for the major classes of assets and liabilities held for sale related to EnerBank:

In Millions
	September 30, 2021			December 31, 2020
Assets
Current
Cash and cash equivalents		$	104		$	136
Accounts receivable and other current assets		143			18
Notes receivable, less allowance of $28 in 2021 and $32 in 2020		247			275
Total current assets		$	494		$	429
Non‑current
Plant, property, and equipment, net		$	29		$	22
Notes receivable, less allowance of $84 in 2021 and $91 in 2020		2,532			2,612
Other non‑current assets		45			46
Total non‑current assets		$	2,606		$	2,680
Total assets		$	3,100		$	3,109
Liabilities
Current
Current portion of long-term debt		$	1,199		$	915
Accounts payable and other current liabilities		34			38
Total current liabilities		$	1,233		$	953
Non‑current
Long-term debt		$	1,522		$	1,890
Other non‑current liabilities		1			4
Total non‑current liabilities		$	1,523		$	1,894
Total liabilities		$	2,756		$	2,847

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Significant Accounting Policies (Policy)	9 Months Ended
	Sep. 30, 2021
Significant Accounting Policies [Line Items]
Cash and Cash Equivalents	Cash and Cash Equivalents: Cash and cash equivalents include short-term, highly liquid investments with original maturities of three months or less.
Restricted Cash and Cash Equivalents	Restricted Cash and Cash Equivalents: Restricted cash and cash equivalents are held primarily for the repayment of securitization bonds and funds held in escrow. Cash and cash equivalents may also be restricted to pay other contractual obligations such as leasing of coal railcars. These amounts are classified as current assets since they relate to payments that could or will occur within one year.
Variable Interest Entity, Primary Beneficiary
Significant Accounting Policies [Line Items]
Consolidation, Variable Interest Entity, Policy	Aviator Wind Equity Holdings and Aviator Wind represent VIEs. In accordance with the associated limited liability company operating agreement, the tax equity investor is guaranteed preferred returns from Aviator Wind. However, CMS Enterprises manages and controls the operating activities of Aviator Wind Equity Holdings and, ultimately, Aviator Wind. As a result, CMS Enterprises is the primary beneficiary of Aviator Wind Equity Holdings and Aviator Wind, as it has the power to direct the activities that most significantly impact the economic performance of the companies, as well as the obligation to absorb losses or the right to receive benefits from the companies.
Variable Interest Entity, Not Primary Beneficiary
Significant Accounting Policies [Line Items]
Consolidation, Variable Interest Entity, Policy	CMS Energy has variable interests in T.E.S. Filer City, Grayling, Genesee, and Craven. While CMS Energy owns 50 percent of each partnership, it is not the primary beneficiary of any of these partnerships because decision making is shared among unrelated parties, and no one party has the ability to direct the activities that most significantly impact the entities’ economic performance, such as operations and maintenance, plant dispatch, and fuel strategy. The partners must agree on all major decisions for each of the partnerships.
Consumers Energy Company
Significant Accounting Policies [Line Items]
Cash and Cash Equivalents	Cash and Cash Equivalents: Cash and cash equivalents include short-term, highly liquid investments with original maturities of three months or less.
Restricted Cash and Cash Equivalents	Restricted Cash and Cash Equivalents: Restricted cash and cash equivalents are held primarily for the repayment of securitization bonds and funds held in escrow. Cash and cash equivalents may also be restricted to pay other contractual obligations such as leasing of coal railcars. These amounts are classified as current assets since they relate to payments that could or will occur within one year.

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Contingencies and Commitments (Tables)

9 Months Ended

Sep. 30, 2021

Site Contingency [Line Items]

Expected Remediation Costs By Year

CMS Energy

expects to pay the following amounts for long-term leachate disposal and operating and maintenance costs during the remainder of 2021 and in each of the next five years:

In Millions
	2021			2022			2023			2024			2025			2026
CMS Energy
Long-term leachate disposal and operating and maintenance costs		$	1		$	4		$	4		$	4		$	4		$	4

Guarantees

Presented in the following table are CMS Energy’s and Consumers’ guarantees at September 30, 2021:

In Millions
Guarantee Description	Issue Date	Expiration Date	Maximum Obligation			Carrying Amount
CMS Energy, including Consumers
Indemnity obligations from purchase of VIE1	September 2020	indefinite		$	320		$	—
Indemnity obligations from stock and asset sale agreements2	various	indefinite		153			2
Guarantee3	July 2011	indefinite		30			—
Consumers
Guarantee3	July 2011	indefinite		$	30		$	—

1In conjunction with the purchase of its interest in Aviator Wind Equity Holdings, CMS Enterprises assumed certain indemnity obligations that protect the associated tax equity investor against losses incurred as a result of breaches of representations and warranties provided by Aviator Wind Equity Holdings and its subsidiaries. These obligations are generally capped at an amount equal to the tax equity investor’s capital contributions plus a specified return, less any distributions and tax benefits it receives, in connection with its membership interest in Aviator Wind. CMS Enterprises would recover 49 percent of any amounts paid to the tax equity investor from the other owner of Aviator Wind Equity Holdings. Additionally, Aviator Wind holds insurance coverage that would partially protect against losses incurred as a result of certain failures to qualify for production tax credits. For further details on CMS Enterprises’ ownership interest in Aviator Wind Equity Holdings, see Note 12, Variable Interest Entities.

2These obligations arose from stock and asset sale agreements under which CMS Energy or a subsidiary of CMS Energy indemnified the purchaser for losses resulting from various matters, primarily claims related to taxes. The maximum obligation amount is mostly related to the Equatorial Guinea tax claim discussed in the CMS Energy Contingencies section of this Note. CMS Energy believes the likelihood of material loss to be remote for the indemnity obligations not recorded as liabilities.

3This obligation comprises a guarantee provided by Consumers to the U.S. Department of Energy in connection with a settlement agreement regarding damages resulting from the department’s failure to accept spent nuclear fuel from nuclear power plants formerly owned by Consumers.

Consumers Energy Company

Site Contingency [Line Items]

Expected Remediation Costs By Year

Consumers expects to pay the following amounts for remediation and other response activity costs during the remainder of 2021 and in each of the next five years:

In Millions
	2021			2022			2023			2024			2025			2026
Consumers
Remediation and other response activity costs		$	1		$	4		$	9		$	24		$	11		$	1

Guarantees

Presented in the following table are CMS Energy’s and Consumers’ guarantees at September 30, 2021:

In Millions
Guarantee Description	Issue Date	Expiration Date	Maximum Obligation			Carrying Amount
CMS Energy, including Consumers
Indemnity obligations from purchase of VIE1	September 2020	indefinite		$	320		$	—
Indemnity obligations from stock and asset sale agreements2	various	indefinite		153			2
Guarantee3	July 2011	indefinite		30			—
Consumers
Guarantee3	July 2011	indefinite		$	30		$	—

1In conjunction with the purchase of its interest in Aviator Wind Equity Holdings, CMS Enterprises assumed certain indemnity obligations that protect the associated tax equity investor against losses incurred as a result of breaches of representations and warranties provided by Aviator Wind Equity Holdings and its subsidiaries. These obligations are generally capped at an amount equal to the tax equity investor’s capital contributions plus a specified return, less any distributions and tax benefits it receives, in connection with its membership interest in Aviator Wind. CMS Enterprises would recover 49 percent of any amounts paid to the tax equity investor from the other owner of Aviator Wind Equity Holdings. Additionally, Aviator Wind holds insurance coverage that would partially protect against losses incurred as a result of certain failures to qualify for production tax credits. For further details on CMS Enterprises’ ownership interest in Aviator Wind Equity Holdings, see Note 12, Variable Interest Entities.

2These obligations arose from stock and asset sale agreements under which CMS Energy or a subsidiary of CMS Energy indemnified the purchaser for losses resulting from various matters, primarily claims related to taxes. The maximum obligation amount is mostly related to the Equatorial Guinea tax claim discussed in the CMS Energy Contingencies section of this Note. CMS Energy believes the likelihood of material loss to be remote for the indemnity obligations not recorded as liabilities.

3This obligation comprises a guarantee provided by Consumers to the U.S. Department of Energy in connection with a settlement agreement regarding damages resulting from the department’s failure to accept spent nuclear fuel from nuclear power plants formerly owned by Consumers.

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Financings And Capitalization (Tables)

9 Months Ended

Sep. 30, 2021

Debt Instrument [Line Items]

Revolving Credit Facilities

The following credit facilities with banks were available at September 30, 2021:

In Millions
Expiration Date	Amount of Facility			Amount Borrowed			Letters of Credit Outstanding			Amount Available
CMS Energy, parent only
June 5, 2024		$	550		$	—		$	18		$	532
September 23, 20221		31			—			31			—
CMS Enterprises, including subsidiaries
September 25, 20252		$	39		$	—		$	39		$	—
September 30, 20253		18			—			8			10
Consumers4
June 5, 2024		$	850		$	—		$	12		$	838
November 19, 2022		250			—			1			249
April 18, 2022		30			—			30			—

1The maximum aggregate of letters of credit that may be issued under this facility is $50 million. The amount remaining under the facility is uncommitted.

2This letter of credit facility is available to Aviator Wind Equity Holdings. For more information regarding Aviator Wind Equity Holdings, see Note 12, Variable Interest Entities.

3Under this facility, $8 million is available solely for the purpose of issuing letters of credit. Obligations under this facility are secured by the collateral accounts with the lending bank.

4Obligations under these facilities are secured by first mortgage bonds of Consumers.

Schedule of Forward Contracts

Presented in the following table are details of CMS Energy’s forward sales contracts under this program at September 30, 2021:

			Forward Price Per Share
Contract Date	Maturity Date	Number of Shares	Initial			September 30, 2021
September 15, 2020	June 30, 2022	846,759		$	61.04		$	59.01
December 22, 2020	June 22, 2022	115,595		61.81			60.27

Consumers Energy Company

Debt Instrument [Line Items]

Schedule of Debt

Presented in the following table is a summary of major long-term debt issuances during the nine months ended September 30, 2021:

	Principal (In Millions)			Interest Rate	Issuance Date	Maturity Date
Consumers
First mortgage bonds		$	300	2.650%	August 2021	August 2052

Revolving Credit Facilities

The following credit facilities with banks were available at September 30, 2021:

In Millions
Expiration Date	Amount of Facility			Amount Borrowed			Letters of Credit Outstanding			Amount Available
CMS Energy, parent only
June 5, 2024		$	550		$	—		$	18		$	532
September 23, 20221		31			—			31			—
CMS Enterprises, including subsidiaries
September 25, 20252		$	39		$	—		$	39		$	—
September 30, 20253		18			—			8			10
Consumers4
June 5, 2024		$	850		$	—		$	12		$	838
November 19, 2022		250			—			1			249
April 18, 2022		30			—			30			—

1The maximum aggregate of letters of credit that may be issued under this facility is $50 million. The amount remaining under the facility is uncommitted.

2This letter of credit facility is available to Aviator Wind Equity Holdings. For more information regarding Aviator Wind Equity Holdings, see Note 12, Variable Interest Entities.

3Under this facility, $8 million is available solely for the purpose of issuing letters of credit. Obligations under this facility are secured by the collateral accounts with the lending bank.

4Obligations under these facilities are secured by first mortgage bonds of Consumers.

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Assets And Liabilities Measured At Fair Value On A Recurring Basis

Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:

In Millions
	CMS Energy, including Consumers						Consumers
	September 30 2021			December 31 2020			September 30 2021			December 31 2020
Assets1
Restricted cash equivalents		$	30		$	17		$	26		$	15
Nonqualified deferred compensation plan assets		25			23			20			18
Derivative instruments		2			1			2			1
Total assets		$	57		$	41		$	48		$	34
Liabilities1
Nonqualified deferred compensation plan liabilities		$	25		$	23		$	20		$	18
Derivative instruments		9			11			—			—
Total liabilities		$	34		$	34		$	20		$	18

1All assets and liabilities were classified as Level 1 with the exception of derivative contracts, which were classified as Level 2 or Level 3.

Consumers Energy Company

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Assets And Liabilities Measured At Fair Value On A Recurring Basis

Presented in the following table are CMS Energy’s and Consumers’ assets and liabilities recorded at fair value on a recurring basis:

In Millions
	CMS Energy, including Consumers						Consumers
	September 30 2021			December 31 2020			September 30 2021			December 31 2020
Assets1
Restricted cash equivalents		$	30		$	17		$	26		$	15
Nonqualified deferred compensation plan assets		25			23			20			18
Derivative instruments		2			1			2			1
Total assets		$	57		$	41		$	48		$	34
Liabilities1
Nonqualified deferred compensation plan liabilities		$	25		$	23		$	20		$	18
Derivative instruments		9			11			—			—
Total liabilities		$	34		$	34		$	20		$	18

1All assets and liabilities were classified as Level 1 with the exception of derivative contracts, which were classified as Level 2 or Level 3.

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Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2021

Financial Instruments [Line Items]

Schedule Of Carrying Amounts And Fair Values Of Financial Instruments

For information about assets and liabilities recorded at fair value and for additional details regarding the fair value hierarchy, see Note 4, Fair Value Measurements.

In Millions
	September 30, 2021															December 31, 2020
	Carrying Amount			Fair Value												Carrying Amount			Fair Value
				Total			Level												Total			Level
							1			2			3									1			2			3
CMS Energy, including Consumers
Assets
Long-term receivables1		$	14		$	14		$	—		$	—		$	14		$	17		$	17		$	—		$	—		$	17
Liabilities
Long-term debt2		12,599			13,886			1,195			10,727			1,964			12,315			14,601			1,249			11,267			2,085
Long-term payables3		31			32			—			—			32			33			35			—			—			35
Consumers
Assets
Long-term receivables1		$	14		$	14		$	—		$	—		$	14		$	17		$	17		$	—		$	—		$	17
Notes receivable – related party4		104			104			—			—			104			107			107			—			—			107
Liabilities
Long-term debt5		8,392			9,411			—			7,447			1,964			8,106			9,801			—			7,716			2,085

1Includes current portion of long-term accounts receivable of $9 million at September 30, 2021 and $12 million at December 31, 2020.

2Includes current portion of long-term debt of $572 million at September 30, 2021 and $571 million at December 31, 2020.

3Includes current portion of long-term payables of $22 million at September 30, 2021 and $6 million at December 31, 2020.

4Includes current portion of notes receivable – related party of $7 million at September 30, 2021 and December 31, 2020.

5Includes current portion of long-term debt of $364 million at September 30, 2021 and December 31, 2020.

Consumers Energy Company

Financial Instruments [Line Items]

Schedule Of Carrying Amounts And Fair Values Of Financial Instruments

For information about assets and liabilities recorded at fair value and for additional details regarding the fair value hierarchy, see Note 4, Fair Value Measurements.

In Millions
	September 30, 2021															December 31, 2020
	Carrying Amount			Fair Value												Carrying Amount			Fair Value
				Total			Level												Total			Level
							1			2			3									1			2			3
CMS Energy, including Consumers
Assets
Long-term receivables1		$	14		$	14		$	—		$	—		$	14		$	17		$	17		$	—		$	—		$	17
Liabilities
Long-term debt2		12,599			13,886			1,195			10,727			1,964			12,315			14,601			1,249			11,267			2,085
Long-term payables3		31			32			—			—			32			33			35			—			—			35
Consumers
Assets
Long-term receivables1		$	14		$	14		$	—		$	—		$	14		$	17		$	17		$	—		$	—		$	17
Notes receivable – related party4		104			104			—			—			104			107			107			—			—			107
Liabilities
Long-term debt5		8,392			9,411			—			7,447			1,964			8,106			9,801			—			7,716			2,085

1Includes current portion of long-term accounts receivable of $9 million at September 30, 2021 and $12 million at December 31, 2020.

2Includes current portion of long-term debt of $572 million at September 30, 2021 and $571 million at December 31, 2020.

3Includes current portion of long-term payables of $22 million at September 30, 2021 and $6 million at December 31, 2020.

4Includes current portion of notes receivable – related party of $7 million at September 30, 2021 and December 31, 2020.

5Includes current portion of long-term debt of $364 million at September 30, 2021 and December 31, 2020.

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Retirement Benefits (Tables)

9 Months Ended

Sep. 30, 2021

Defined Benefit Plan Disclosure [Line Items]

Schedule Of Net Benefit Costs

Presented in the following table are the costs (credits) and other changes in plan assets and benefit obligations incurred in CMS Energy’s and Consumers’ retirement benefits plans:

In Millions
	DB Pension Plans												OPEB Plan
	Three Months Ended						Nine Months Ended						Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020			2021			2020			2021			2020
CMS Energy, including Consumers
Net periodic cost (credit)
Service cost		$	14		$	12		$	41		$	37		$	5		$	4		$	14		$	12
Interest cost		14			20			44			61			6			8			17			25
Settlement loss		—			1			—			1			—			—			—			—
Expected return on plan assets		(51)			(47)			(155)			(143)			(28)			(25)			(82)			(75)
Amortization of:
Net loss		25			23			76			67			2			4			6			11
Prior service cost (credit)		1			—			3			1			(14)			(14)			(40)			(42)
Settlement loss		1			—			4			—			—			—			—			—
Net periodic cost (credit)		$	4		$	9		$	13		$	24		$	(29)		$	(23)		$	(85)		$	(69)
Consumers
Net periodic cost (credit)
Service cost		$	14		$	12		$	40		$	36		$	4		$	3		$	13		$	11
Interest cost		14			20			42			59			6			8			17			24
Expected return on plan assets		(49)			(45)			(147)			(136)			(26)			(23)			(77)			(70)
Amortization of:
Net loss		24			22			73			64			2			4			6			11
Prior service cost (credit)		1			—			3			1			(12)			(13)			(38)			(40)
Settlement loss		1			—			4			—			—			—			—			—
Net periodic cost (credit)		$	5		$	9		$	15		$	24		$	(26)		$	(21)		$	(79)		$	(64)

Consumers Energy Company

Defined Benefit Plan Disclosure [Line Items]

Schedule Of Net Benefit Costs

Presented in the following table are the costs (credits) and other changes in plan assets and benefit obligations incurred in CMS Energy’s and Consumers’ retirement benefits plans:

In Millions
	DB Pension Plans												OPEB Plan
	Three Months Ended						Nine Months Ended						Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020			2021			2020			2021			2020
CMS Energy, including Consumers
Net periodic cost (credit)
Service cost		$	14		$	12		$	41		$	37		$	5		$	4		$	14		$	12
Interest cost		14			20			44			61			6			8			17			25
Settlement loss		—			1			—			1			—			—			—			—
Expected return on plan assets		(51)			(47)			(155)			(143)			(28)			(25)			(82)			(75)
Amortization of:
Net loss		25			23			76			67			2			4			6			11
Prior service cost (credit)		1			—			3			1			(14)			(14)			(40)			(42)
Settlement loss		1			—			4			—			—			—			—			—
Net periodic cost (credit)		$	4		$	9		$	13		$	24		$	(29)		$	(23)		$	(85)		$	(69)
Consumers
Net periodic cost (credit)
Service cost		$	14		$	12		$	40		$	36		$	4		$	3		$	13		$	11
Interest cost		14			20			42			59			6			8			17			24
Expected return on plan assets		(49)			(45)			(147)			(136)			(26)			(23)			(77)			(70)
Amortization of:
Net loss		24			22			73			64			2			4			6			11
Prior service cost (credit)		1			—			3			1			(12)			(13)			(38)			(40)
Settlement loss		1			—			4			—			—			—			—			—
Net periodic cost (credit)		$	5		$	9		$	15		$	24		$	(26)		$	(21)		$	(79)		$	(64)

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Income Taxes (Tables)

9 Months Ended

Sep. 30, 2021

Income Taxes [Line Items]

Schedule Of Effective Income Tax Rate Reconciliation

Presented in the following table is a reconciliation of the statutory U.S. federal income tax rate to the effective income tax rate from continuing operations:

Nine Months Ended September 30	2021			2020
CMS Energy, including Consumers
U.S. federal income tax rate		21.0	%		21.0	%
Increase (decrease) in income taxes from:
State and local income taxes, net of federal effect		5.5			4.8
TCJA excess deferred taxes1		(5.8)			(4.3)
Production tax credits		(4.8)			(3.3)
Accelerated flow-through of regulatory tax benefits2		(3.2)			(1.6)
Research and development tax credits, net3		(0.3)			(1.6)
Refund of alternative minimum tax sequestration4		—			(1.4)
Other, net		0.4			0.1
Effective tax rate		12.8	%		13.7	%
Consumers
U.S. federal income tax rate		21.0	%		21.0	%
Increase (decrease) in income taxes from:
State and local income taxes, net of federal effect		5.2			5.0
TCJA excess deferred taxes1		(4.6)			(3.6)
Production tax credits		(3.5)			(1.9)
Accelerated flow-through of regulatory tax benefits2		(2.2)			(1.1)
Research and development tax credits, net3		(0.3)			(1.3)
Other, net		(0.2)			(0.3)
Effective tax rate		15.4	%		17.8	%

1In September 2020, the MPSC authorized Consumers to accelerate the amortization of a regulatory liability associated with unprotected, non‑property-related excess deferred income taxes resulting from the TCJA. The regulatory liability, which was previously scheduled to be amortized through 2029, will now be fully amortized by the end of 2022.

2In September 2020, the MPSC authorized Consumers to accelerate the amortization of income tax benefits associated with the cost to remove gas plant assets. These tax benefits, which were previously scheduled to be amortized through 2025, will now be fully amortized by the end of 2022.

3In March 2020, CMS Energy finalized a study of research and development tax credits for tax years 2012 through 2018. As a result, in 2020, CMS Energy, including Consumers, recognized a $9 million increase in the credit, net of reserves for uncertain tax positions. Of this amount, $8 million was recognized at Consumers.

4In January 2020, the IRS issued a decision restoring alternative minimum tax credit refunds sequestered in years prior to 2018. As a result, in 2020, CMS Energy recognized a $9 million income tax benefit for sequestered amounts related to its 2017 tax return. CMS Energy received the refund in April 2020.

Consumers Energy Company

Income Taxes [Line Items]

Schedule Of Effective Income Tax Rate Reconciliation

Presented in the following table is a reconciliation of the statutory U.S. federal income tax rate to the effective income tax rate from continuing operations:

Nine Months Ended September 30	2021			2020
CMS Energy, including Consumers
U.S. federal income tax rate		21.0	%		21.0	%
Increase (decrease) in income taxes from:
State and local income taxes, net of federal effect		5.5			4.8
TCJA excess deferred taxes1		(5.8)			(4.3)
Production tax credits		(4.8)			(3.3)
Accelerated flow-through of regulatory tax benefits2		(3.2)			(1.6)
Research and development tax credits, net3		(0.3)			(1.6)
Refund of alternative minimum tax sequestration4		—			(1.4)
Other, net		0.4			0.1
Effective tax rate		12.8	%		13.7	%
Consumers
U.S. federal income tax rate		21.0	%		21.0	%
Increase (decrease) in income taxes from:
State and local income taxes, net of federal effect		5.2			5.0
TCJA excess deferred taxes1		(4.6)			(3.6)
Production tax credits		(3.5)			(1.9)
Accelerated flow-through of regulatory tax benefits2		(2.2)			(1.1)
Research and development tax credits, net3		(0.3)			(1.3)
Other, net		(0.2)			(0.3)
Effective tax rate		15.4	%		17.8	%

1In September 2020, the MPSC authorized Consumers to accelerate the amortization of a regulatory liability associated with unprotected, non‑property-related excess deferred income taxes resulting from the TCJA. The regulatory liability, which was previously scheduled to be amortized through 2029, will now be fully amortized by the end of 2022.

2In September 2020, the MPSC authorized Consumers to accelerate the amortization of income tax benefits associated with the cost to remove gas plant assets. These tax benefits, which were previously scheduled to be amortized through 2025, will now be fully amortized by the end of 2022.

3In March 2020, CMS Energy finalized a study of research and development tax credits for tax years 2012 through 2018. As a result, in 2020, CMS Energy, including Consumers, recognized a $9 million increase in the credit, net of reserves for uncertain tax positions. Of this amount, $8 million was recognized at Consumers.

4In January 2020, the IRS issued a decision restoring alternative minimum tax credit refunds sequestered in years prior to 2018. As a result, in 2020, CMS Energy recognized a $9 million income tax benefit for sequestered amounts related to its 2017 tax return. CMS Energy received the refund in April 2020.

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Earnings Per Share - CMS Energy (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Basic And Diluted EPS Computations

Presented in the following table are CMS Energy’s basic and diluted EPS computations based on income from continuing operations:

In Millions, Except Per Share Amounts
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Income available to common stockholders
Income from continuing operations		$	153		$	198		$	614		$	556
Less loss attributable to noncontrolling interests		(6)			(8)			(18)			(7)
Less preferred stock dividends		3			—			3			—
Income from continuing operations available to common stockholders – basic and diluted		$	156		$	206		$	629		$	563
Average common shares outstanding
Weighted-average shares – basic		289.1			285.6			288.9			284.8
Add dilutive nonvested stock awards		0.5			0.8			0.5			0.9
Add dilutive forward equity sale contracts		—			0.5			—			0.6
Weighted-average shares – diluted		289.6			286.9			289.4			286.3
Income from continuing operations per average common share available to common stockholders
Basic		$	0.54		$	0.72		$	2.18		$	1.98
Diluted		0.54			0.72			2.18			1.97

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Revenue (Tables)

9 Months Ended

Sep. 30, 2021

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

Presented in the following tables are the components of operating revenue:

In Millions
Three Months Ended September 30, 2021	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	1,416		$	224		$	—		$	1,640
Other		—			—			31			31
Revenue recognized from contracts with customers		$	1,416		$	224		$	31		$	1,671
Leasing income		—			—			50			50
Financing income		2			1			—			3
Consumers alternative-revenue programs		1			—			—			1
Total operating revenue – CMS Energy		$	1,419		$	225		$	81		$	1,725
Consumers
Consumers utility revenue
Residential		$	718		$	143					$	861
Commercial		456			36						492
Industrial		167			5						172
Other		75			40						115
Revenue recognized from contracts with customers		$	1,416		$	224					$	1,640
Financing income		2			1						3
Alternative-revenue programs		1			—						1
Total operating revenue – Consumers		$	1,419		$	225					$	1,644

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $35 million for the three months ended September 30, 2021.

In Millions
Three Months Ended September 30, 2020	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	1,255		$	192		$	—		$	1,447
Other		—			—			21			21
Revenue recognized from contracts with customers		$	1,255		$	192		$	21		$	1,468
Leasing income		—			—			36			36
Financing income		2			1			—			3
Total operating revenue – CMS Energy		$	1,257		$	193		$	57		$	1,507
Consumers
Consumers utility revenue
Residential		$	624		$	120					$	744
Commercial		413			27						440
Industrial		161			5						166
Other		57			40						97
Revenue recognized from contracts with customers		$	1,255		$	192					$	1,447
Financing income		2			1						3
Total operating revenue – Consumers		$	1,257		$	193					$	1,450

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $23 million for the three months ended September 30, 2020.

In Millions
Nine Months Ended September 30, 2021	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	3,705		$	1,357		$	—		$	5,062
Other		—			—			86			86
Revenue recognized from contracts with customers		$	3,705		$	1,357		$	86		$	5,148
Leasing income		—			—			136			136
Financing income		7			4			—			11
Consumers alternative-revenue programs		1			—			—			1
Total operating revenue – CMS Energy		$	3,713		$	1,361		$	222		$	5,296
Consumers
Consumers utility revenue
Residential		$	1,847		$	917					$	2,764
Commercial		1,191			258						1,449
Industrial		458			36						494
Other		209			146						355
Revenue recognized from contracts with customers		$	3,705		$	1,357					$	5,062
Financing income		7			4						11
Alternative-revenue programs		1			—						1
Total operating revenue – Consumers		$	3,713		$	1,361					$	5,074

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $94 million for the nine months ended September 30, 2021.

In Millions
Nine Months Ended September 30, 2020	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	3,300		$	1,212		$	—		$	4,512
Other		—			—			57			57
Revenue recognized from contracts with customers		$	3,300		$	1,212		$	57		$	4,569
Leasing income		—			—			110			110
Financing income		7			5			—			12
Total operating revenue – CMS Energy		$	3,307		$	1,217		$	167		$	4,691
Consumers
Consumers utility revenue
Residential		$	1,612		$	819					$	2,431
Commercial		1,093			227						1,320
Industrial		427			32						459
Other		168			134						302
Revenue recognized from contracts with customers		$	3,300		$	1,212					$	4,512
Financing income		7			5						12
Total operating revenue – Consumers		$	3,307		$	1,217					$	4,524

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $69 million for the nine months ended September 30, 2020.

Consumers Energy Company

Disaggregation of Revenue [Line Items]

Disaggregation of Revenue

Presented in the following tables are the components of operating revenue:

In Millions
Three Months Ended September 30, 2021	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	1,416		$	224		$	—		$	1,640
Other		—			—			31			31
Revenue recognized from contracts with customers		$	1,416		$	224		$	31		$	1,671
Leasing income		—			—			50			50
Financing income		2			1			—			3
Consumers alternative-revenue programs		1			—			—			1
Total operating revenue – CMS Energy		$	1,419		$	225		$	81		$	1,725
Consumers
Consumers utility revenue
Residential		$	718		$	143					$	861
Commercial		456			36						492
Industrial		167			5						172
Other		75			40						115
Revenue recognized from contracts with customers		$	1,416		$	224					$	1,640
Financing income		2			1						3
Alternative-revenue programs		1			—						1
Total operating revenue – Consumers		$	1,419		$	225					$	1,644

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $35 million for the three months ended September 30, 2021.

In Millions
Three Months Ended September 30, 2020	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	1,255		$	192		$	—		$	1,447
Other		—			—			21			21
Revenue recognized from contracts with customers		$	1,255		$	192		$	21		$	1,468
Leasing income		—			—			36			36
Financing income		2			1			—			3
Total operating revenue – CMS Energy		$	1,257		$	193		$	57		$	1,507
Consumers
Consumers utility revenue
Residential		$	624		$	120					$	744
Commercial		413			27						440
Industrial		161			5						166
Other		57			40						97
Revenue recognized from contracts with customers		$	1,255		$	192					$	1,447
Financing income		2			1						3
Total operating revenue – Consumers		$	1,257		$	193					$	1,450

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $23 million for the three months ended September 30, 2020.

In Millions
Nine Months Ended September 30, 2021	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	3,705		$	1,357		$	—		$	5,062
Other		—			—			86			86
Revenue recognized from contracts with customers		$	3,705		$	1,357		$	86		$	5,148
Leasing income		—			—			136			136
Financing income		7			4			—			11
Consumers alternative-revenue programs		1			—			—			1
Total operating revenue – CMS Energy		$	3,713		$	1,361		$	222		$	5,296
Consumers
Consumers utility revenue
Residential		$	1,847		$	917					$	2,764
Commercial		1,191			258						1,449
Industrial		458			36						494
Other		209			146						355
Revenue recognized from contracts with customers		$	3,705		$	1,357					$	5,062
Financing income		7			4						11
Alternative-revenue programs		1			—						1
Total operating revenue – Consumers		$	3,713		$	1,361					$	5,074

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $94 million for the nine months ended September 30, 2021.

In Millions
Nine Months Ended September 30, 2020	Electric Utility			Gas Utility			Enterprises1			Consolidated
CMS Energy, including Consumers
Consumers utility revenue		$	3,300		$	1,212		$	—		$	4,512
Other		—			—			57			57
Revenue recognized from contracts with customers		$	3,300		$	1,212		$	57		$	4,569
Leasing income		—			—			110			110
Financing income		7			5			—			12
Total operating revenue – CMS Energy		$	3,307		$	1,217		$	167		$	4,691
Consumers
Consumers utility revenue
Residential		$	1,612		$	819					$	2,431
Commercial		1,093			227						1,320
Industrial		427			32						459
Other		168			134						302
Revenue recognized from contracts with customers		$	3,300		$	1,212					$	4,512
Financing income		7			5						12
Total operating revenue – Consumers		$	3,307		$	1,217					$	4,524

1Amounts represent the enterprises segment’s operating revenue from independent power production and its sales of energy commodities. The enterprises segment’s sales of energy commodities are accounted for as operating leases. In addition to fixed payments, these agreements have variable payments based on energy delivered. The enterprises segment’s leasing income included variable lease payments of $69 million for the nine months ended September 30, 2020.

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Cash And Cash Equivalents (Tables)

9 Months Ended

Sep. 30, 2021

Cash and Cash Equivalents [Line Items]

Schedule Of Cash And Cash Equivalents, Including Restricted Amounts

Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:

In Millions
	September 30, 2021			December 31, 2020
CMS Energy, including Consumers
Cash and cash equivalents		$	102		$	32
Restricted cash and cash equivalents		30			17
Current assets held for sale		104			136
Cash and cash equivalents, including restricted amounts – CMS Energy		$	236		$	185
Consumers
Cash and cash equivalents		$	29		$	20
Restricted cash and cash equivalents		26			15
Cash and cash equivalents, including restricted amounts – Consumers		$	55		$	35

Consumers Energy Company

Cash and Cash Equivalents [Line Items]

Schedule Of Cash And Cash Equivalents, Including Restricted Amounts

Presented in the following table are the components of total cash and cash equivalents, including restricted amounts, and their location on CMS Energy’s and Consumers’ consolidated balance sheets:

In Millions
	September 30, 2021			December 31, 2020
CMS Energy, including Consumers
Cash and cash equivalents		$	102		$	32
Restricted cash and cash equivalents		30			17
Current assets held for sale		104			136
Cash and cash equivalents, including restricted amounts – CMS Energy		$	236		$	185
Consumers
Cash and cash equivalents		$	29		$	20
Restricted cash and cash equivalents		26			15
Cash and cash equivalents, including restricted amounts – Consumers		$	55		$	35

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Reportable Segments (Tables)

9 Months Ended

Sep. 30, 2021

Segment Reporting Information [Line Items]

Schedule Of Financial Information By Reportable Segments

Presented in the following tables is financial information by segment:

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
CMS Energy, including Consumers
Operating revenue
Electric utility		$	1,419		$	1,257		$	3,713		$	3,307
Gas utility		225			193			1,361			1,217
Enterprises		81			57			222			167
Total operating revenue – CMS Energy		$	1,725		$	1,507		$	5,296		$	4,691
Consumers
Operating revenue
Electric utility		$	1,419		$	1,257		$	3,713		$	3,307
Gas utility		225			193			1,361			1,217
Total operating revenue – Consumers		$	1,644		$	1,450		$	5,074		$	4,524
CMS Energy, including Consumers
Net income (loss) available to common stockholders
Electric utility		$	195		$	226		$	504		$	463
Gas utility		(9)			4			208			162
Enterprises		7			13			26			34
Other reconciling items		(7)			(25)			(27)			(62)
Total net income available to common stockholders – CMS Energy		$	186		$	218		$	711		$	597
Consumers
Net income (loss) available to common stockholder
Electric utility		$	195		$	226		$	504		$	463
Gas utility		(9)			4			208			162
Other reconciling items		—			—			(1)			(1)
Total net income available to common stockholder – Consumers		$	186		$	230		$	711		$	624

In Millions
	September 30, 2021			December 31, 2020
CMS Energy, including Consumers
Plant, property, and equipment, gross
Electric utility1		$	17,992		$	17,155
Gas utility1		10,317			9,581
Enterprises		1,119			1,113
Other reconciling items		22			21
Total plant, property, and equipment, gross – CMS Energy		$	29,450		$	27,870
Consumers
Plant, property, and equipment, gross
Electric utility1		$	17,992		$	17,155
Gas utility1		10,317			9,581
Other reconciling items		22			21
Total plant, property, and equipment, gross – Consumers		$	28,331		$	26,757
CMS Energy, including Consumers
Total assets
Electric utility1		$	16,092		$	15,829
Gas utility1		9,969			9,429
Enterprises		1,275			1,276
Other reconciling items		3,177			3,132
Total assets – CMS Energy		$	30,513		$	29,666
Consumers
Total assets
Electric utility1		$	16,154		$	15,893
Gas utility1		10,017			9,477
Other reconciling items		18			29
Total assets – Consumers		$	26,189		$	25,399

1Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.

Consumers Energy Company

Segment Reporting Information [Line Items]

Schedule Of Financial Information By Reportable Segments

Presented in the following tables is financial information by segment:

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
CMS Energy, including Consumers
Operating revenue
Electric utility		$	1,419		$	1,257		$	3,713		$	3,307
Gas utility		225			193			1,361			1,217
Enterprises		81			57			222			167
Total operating revenue – CMS Energy		$	1,725		$	1,507		$	5,296		$	4,691
Consumers
Operating revenue
Electric utility		$	1,419		$	1,257		$	3,713		$	3,307
Gas utility		225			193			1,361			1,217
Total operating revenue – Consumers		$	1,644		$	1,450		$	5,074		$	4,524
CMS Energy, including Consumers
Net income (loss) available to common stockholders
Electric utility		$	195		$	226		$	504		$	463
Gas utility		(9)			4			208			162
Enterprises		7			13			26			34
Other reconciling items		(7)			(25)			(27)			(62)
Total net income available to common stockholders – CMS Energy		$	186		$	218		$	711		$	597
Consumers
Net income (loss) available to common stockholder
Electric utility		$	195		$	226		$	504		$	463
Gas utility		(9)			4			208			162
Other reconciling items		—			—			(1)			(1)
Total net income available to common stockholder – Consumers		$	186		$	230		$	711		$	624

In Millions
	September 30, 2021			December 31, 2020
CMS Energy, including Consumers
Plant, property, and equipment, gross
Electric utility1		$	17,992		$	17,155
Gas utility1		10,317			9,581
Enterprises		1,119			1,113
Other reconciling items		22			21
Total plant, property, and equipment, gross – CMS Energy		$	29,450		$	27,870
Consumers
Plant, property, and equipment, gross
Electric utility1		$	17,992		$	17,155
Gas utility1		10,317			9,581
Other reconciling items		22			21
Total plant, property, and equipment, gross – Consumers		$	28,331		$	26,757
CMS Energy, including Consumers
Total assets
Electric utility1		$	16,092		$	15,829
Gas utility1		9,969			9,429
Enterprises		1,275			1,276
Other reconciling items		3,177			3,132
Total assets – CMS Energy		$	30,513		$	29,666
Consumers
Total assets
Electric utility1		$	16,154		$	15,893
Gas utility1		10,017			9,477
Other reconciling items		18			29
Total assets – Consumers		$	26,189		$	25,399

1Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.

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Variable Interest Entities (Tables)

9 Months Ended

Sep. 30, 2021

Variable Interest Entities [Abstract]

Schedule of Variable Interest Entities

Presented in the following table are the carrying values of the VIEs’ assets and liabilities included on CMS Energy’s consolidated balance sheets:

In Millions
	September 30, 2021			December 31, 2020
Current
Cash and cash equivalents		$	15		$	7
Accounts receivable		8			5
Prepayments and other current assets		1			1
Non-current
Plant, property, and equipment, net		675			692
Total assets1		$	699		$	705
Current
Accounts payable		$	13		$	3
Non-current
Asset retirement obligations		20			19
Total liabilities		$	33		$	22

1Assets may be used only to meet VIEs’ obligations and commitments.

Presented in the following table is information about these partnerships:

Name	Nature of the Entity	Nature of CMS Energy’s Involvement
T.E.S. Filer City	Coal-fueled power generator	Long-term PPA between partnership and Consumers
		Employee assignment agreement
Grayling	Wood waste-fueled power generator	Long-term PPA between partnership and Consumers
		Reduced dispatch agreement with Consumers1
		Operating and management contract
Genesee	Wood waste-fueled power generator	Long-term PPA between partnership and Consumers
		Reduced dispatch agreement with Consumers1
		Operating and management contract
Craven	Wood waste-fueled power generator	Operating and management contract

1Reduced dispatch agreements allow the facilities to be dispatched based on the market price of power compared with the cost of production of the plants. This results in fuel cost savings that each partnership shares with Consumers’ customers.

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Exit Activities and Discontinued Operations - (Tables)

9 Months Ended

Sep. 30, 2021

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Schedule of Restructuring Reserve by Type of Cost

Presented in the following table is a reconciliation of the retention benefit liability recorded in other liabilities on Consumers’ consolidated balance sheets:

In Millions
	Nine Months Ended
September 30	2021			2020
Retention benefit liability at beginning of period		$	11		$	4
Costs incurred and charged to maintenance and other operating expenses		—			11
Costs deferred as a regulatory asset1		5			—
Costs incurred and capitalized		1			1
Retention benefit liability at the end of the period2		$	17		$	16

1Includes $1 million for the three months ended September 30, 2021.

2Includes current portion of other liabilities of $5 million at September 30, 2021 and $7 million at September 30, 2020.

Schedule of Discontinued Operations

The table below presents the financial results of EnerBank included in income from discontinued operations:

In Millions
	Three Months Ended						Nine Months Ended
September 30	2021			2020			2021			2020
Operating revenue		$	70		$	68		$	209		$	191
Expenses
Operating expenses		17			39			60			104
Interest expense		11			13			34			43
Income before income taxes		$	42		$	16		$	115		$	44
Transaction costs		(3)			—			(8)			—
Income from discontinued operations before income taxes		$	39		$	16		$	107		$	44
Income tax expense		9			4			25			10
Income from discontinued operations, net of tax		$	30		$	12		$	82		$	34

The table below presents the aggregate carrying amounts for the major classes of assets and liabilities held for sale related to EnerBank:

In Millions
	September 30, 2021			December 31, 2020
Assets
Current
Cash and cash equivalents		$	104		$	136
Accounts receivable and other current assets		143			18
Notes receivable, less allowance of $28 in 2021 and $32 in 2020		247			275
Total current assets		$	494		$	429
Non‑current
Plant, property, and equipment, net		$	29		$	22
Notes receivable, less allowance of $84 in 2021 and $91 in 2020		2,532			2,612
Other non‑current assets		45			46
Total non‑current assets		$	2,606		$	2,680
Total assets		$	3,100		$	3,109
Liabilities
Current
Current portion of long-term debt		$	1,199		$	915
Accounts payable and other current liabilities		34			38
Total current liabilities		$	1,233		$	953
Non‑current
Long-term debt		$	1,522		$	1,890
Other non‑current liabilities		1			4
Total non‑current liabilities		$	1,523		$	1,894
Total liabilities		$	2,756		$	2,847

Consumers Energy Company

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Schedule of Restructuring Reserve by Type of Cost

Presented in the following table is a reconciliation of the retention benefit liability recorded in other liabilities on Consumers’ consolidated balance sheets:

In Millions
	Nine Months Ended
September 30	2021			2020
Retention benefit liability at beginning of period		$	11		$	4
Costs incurred and charged to maintenance and other operating expenses		—			11
Costs deferred as a regulatory asset1		5			—
Costs incurred and capitalized		1			1
Retention benefit liability at the end of the period2		$	17		$	16

1Includes $1 million for the three months ended September 30, 2021.

2Includes current portion of other liabilities of $5 million at September 30, 2021 and $7 million at September 30, 2020.

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Regulatory Matters - Quarterly Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Public Utilities, General Disclosures [Line Items]
Regulatory liabilities	$ 191		$ 191		$ 151
Operating Revenue	1,725	$ 1,507	5,296	$ 4,691
Consumers Energy Company
Public Utilities, General Disclosures [Line Items]
Regulatory liabilities	191		191		151
Operating Revenue	1,644	$ 1,450	5,074	$ 4,524
Consumers Energy Company | Reserve for customer refunds
Public Utilities, General Disclosures [Line Items]
Regulatory liabilities	8		8		28
Consumers Energy Company | Gain shared with customers
Public Utilities, General Disclosures [Line Items]
Regulatory liabilities					14
Consumers Energy Company | Electric Rate Case
Public Utilities, General Disclosures [Line Items]
Recommended disallowed costs	39		39
Consumers Energy Company | Energy Waste Reduction Plan Incentive
Public Utilities, General Disclosures [Line Items]
Requested recovery/collection	$ 42		$ 42
Operating Revenue					$ 42

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Contingencies and Commitments (Contingencies And Commitments) (Details) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended		32 Months Ended
	Sep. 30, 2020 USD ($)	May 31, 2020 USD ($)	Sep. 30, 2021 USD ($) site MW	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) site MW	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) site MW	Dec. 31, 2020 USD ($)
Loss Contingencies [Line Items]
Regulatory assets			$ 2,588,000		$ 2,588,000		$ 2,588,000	$ 2,653,000
Operating Revenue			1,725,000	$ 1,507,000	5,296,000	$ 4,691,000
Consumers Energy Company
Loss Contingencies [Line Items]
Regulatory assets			2,588,000		2,588,000		2,588,000	$ 2,653,000
Cost of gas sold			53,000	33,000	425,000	383,000
Maintenance and other operating expenses			(390,000)	(266,000)	(1,021,000)	(846,000)
Operating Revenue			1,644,000	$ 1,450,000	5,074,000	$ 4,524,000
Consumers Energy Company | Manufactured Gas Plant
Loss Contingencies [Line Items]
Regulatory assets			114,000		114,000		114,000
Bay Harbor
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies			$ 44,000		$ 44,000		$ 44,000
Discounted projected costs rate			4.34%		4.34%		4.34%
Accrual for environmental loss contingencies, inflation rate			1.00%		1.00%		1.00%
Remaining undiscounted obligation amount			$ 54,000		$ 54,000		$ 54,000
CERCLA Liability | Consumers Energy Company
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies			3,000		3,000		3,000
CERCLA Liability | Minimum | Consumers Energy Company
Loss Contingencies [Line Items]
Remediation and other response activity costs			3,000		3,000		3,000
CERCLA Liability | Maximum | Consumers Energy Company
Loss Contingencies [Line Items]
Remediation and other response activity costs			8,000		8,000		8,000
Manufactured Gas Plant | Consumers Energy Company
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies			$ 57,000		$ 57,000		$ 57,000
Discounted projected costs rate			2.57%		2.57%		2.57%
Accrual for environmental loss contingencies, inflation rate			2.50%		2.50%		2.50%
Remaining undiscounted obligation amount			$ 62,000		$ 62,000		$ 62,000
Number of former MGPs | site			23		23		23
Regulatory asset collection period					10 years
Electric Utility | NREPA | Consumers Energy Company
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies			$ 2,000		$ 2,000		$ 2,000
Electric Utility | NREPA | Minimum | Consumers Energy Company
Loss Contingencies [Line Items]
Remediation and other response activity costs			2,000		2,000		2,000
Electric Utility | NREPA | Maximum | Consumers Energy Company
Loss Contingencies [Line Items]
Remediation and other response activity costs			4,000		4,000		4,000
Gas Utility | NREPA | Consumers Energy Company
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies			1,000		1,000		1,000
Gas Utility | NREPA | Maximum | Consumers Energy Company
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies			3,000		3,000		3,000
Equatorial Guinea Tax Claim
Loss Contingencies [Line Items]
Foreign government tax claim on sale			$ 152,000		$ 152,000		$ 152,000
Civil Case, Consumers V. MPSC Staff | Consumers Energy Company
Loss Contingencies [Line Items]
Civil penalty		$ 10
New Covert Generating Facility | Consumers Energy Company
Loss Contingencies [Line Items]
Nameplate capacity (in MW) | MW			1,176		1,176		1,176
Long-term purchase commitment, amount					$ 810,000
Enterprise Segment Generating Units | Consumers Energy Company
Loss Contingencies [Line Items]
Nameplate capacity (in MW) | MW			1,001		1,001		1,001
Long-term purchase commitment, amount					$ 515,000
Ray Compressor Station | Consumers Energy Company
Loss Contingencies [Line Items]
Plant additions							$ 17,000
Insurance recoveries			$ 10,000		10,000		$ 10,000
Ray Compressor Station | Consumers Energy Company | Insurance Recoveries
Loss Contingencies [Line Items]
Reduction to plant, property and equipment					4,000
Maintenance and other operating expenses					3,000
Operating Revenue					$ 3,000
Ray Compressor Station | Consumers Energy Company | GCR underrecoveries
Loss Contingencies [Line Items]
Cost of gas sold	$ 7,000

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Contingencies and Commitments (Expected Remediation Cost By Year) (Details) $ in Millions	Sep. 30, 2021 USD ($)
Bay Harbor
Site Contingency [Line Items]
2021	$ 1
2022	4
2023	4
2024	4
2025	4
2026	4
Manufactured Gas Plant | Consumers Energy Company
Site Contingency [Line Items]
2021	1
2022	4
2023	9
2024	24
2025	11
2026	$ 1

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Contingencies and Commitments (Guarantees) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Variable Interest Entity, Primary Beneficiary | Aviator Wind Class B Membership
Guarantees And Other Contingencies [Line Items]
Ownership percentage	49.00%
Guarantees
Guarantees And Other Contingencies [Line Items]
Expiration Date	indefinite
Maximum Obligation	$ 30
Carrying Amount	$ 0
Guarantees | Consumers Energy Company
Guarantees And Other Contingencies [Line Items]
Expiration Date	indefinite
Maximum Obligation	$ 30
Carrying Amount	$ 0
Indemnification Agreement From Purchase Of Variable Interest Entity
Guarantees And Other Contingencies [Line Items]
Expiration Date	indefinite
Maximum Obligation	$ 320
Carrying Amount	$ 0
Indemnity Obligations From Stock And Asset Sales Agreements
Guarantees And Other Contingencies [Line Items]
Expiration Date	indefinite
Maximum Obligation	$ 153
Carrying Amount	2
Tax And Other Indemnity Obligations | Consumers Energy Company
Guarantees And Other Contingencies [Line Items]
Carrying Amount	$ 1

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Financings And Capitalization (Major Long-Term Debt Transactions) (Details) - First Mortgage Bonds - 2.650% First Mortgage Bonds Due 2052 - Consumers Energy Company $ in Millions	Sep. 30, 2021 USD ($)
Debt Instrument [Line Items]
Principal Balance	$ 300
Interest rate	2.65%

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Financings And Capitalization (Narrative) (Details)		1 Months Ended		9 Months Ended
	Jul. 01, 2021 USD ($) $ / shares shares	Oct. 28, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2021 USD ($) shares	Sep. 30, 2020 USD ($)	Jul. 31, 2020 USD ($)
Financing And Capitalization [Line Items]
Limitation on payment of stock dividends				$ 5,900,000,000
Dividends paid				570,000,000
Stock offering program maximum value				$ 500,000,000
Number of shares required to settle forward contracts (in shares) | shares				10,266
Issuance of preferred stock, net of issuance costs				$ 224,000,000	$ 0
Term Loan Facility Due November 2021 | Subsequent Event
Financing And Capitalization [Line Items]
Debt retirement, principal		$ 200,000,000
Series C Preferred Stock Depositary Shares
Financing And Capitalization [Line Items]
Number of shares issued (in shares) | shares	9,200,000
Depositary share conversion ratio	0.001
Issue price (in dollars per share) | $ / shares	$ 25.00
Issuance of preferred stock, net of issuance costs	$ 224,000,000
Dividend rate	4.20%
Optional redemption price (in dollars per share) | $ / shares	$ 25.00
Series C Preferred Stock
Financing And Capitalization [Line Items]
Optional redemption price (in dollars per share) | $ / shares	$ 25,000
Consumers Energy Company
Financing And Capitalization [Line Items]
Notes payable – related parties			$ 307,000,000	0
Unrestricted retained earnings				1,800,000,000
Consumers Energy Company | Tax Exempt Revenue Bonds Due 2035 | Tax Exempt Revenue Bonds
Financing And Capitalization [Line Items]
Debt repurchased						$ 35,000,000
Consumers Energy Company | Tax Exempt Revenue Bonds Due 2026 | Tax Exempt Revenue Bonds | Subsequent Event
Financing And Capitalization [Line Items]
Debt reissued		$ 35,000,000
Interest rate		0.875%
Consumers Energy Company | Credit Agreement
Financing And Capitalization [Line Items]
Maximum borrowing capacity			$ 350,000,000
Notes payable – related parties				0
Consumers Energy Company | Credit Agreement | Subsequent Event
Financing And Capitalization [Line Items]
Maximum borrowing capacity		$ 500,000,000
Consumers Energy Company | Credit Agreement | London Interbank Offered Rate (LIBOR)
Financing And Capitalization [Line Items]
Basis spread on variable rate			0.10%
Consumers Energy Company | Commercial Paper
Financing And Capitalization [Line Items]
Short-term debt authorized borrowings				500,000,000
Short-term borrowings outstanding				$ 0

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Financings And Capitalization (Revolving Credit Facilities) (Details)	Sep. 30, 2021 USD ($)
Consumers Energy Company | Revolving Credit Facilities June 5, 2024
Line of Credit Facility [Line Items]
Amount of Facility	$ 850,000,000
Amount Borrowed	0
Letters of Credit Outstanding	12,000,000
Amount Available	838,000,000
Consumers Energy Company | Revolving Credit Facilities November 19, 2022
Line of Credit Facility [Line Items]
Amount of Facility	250,000,000
Amount Borrowed	0
Letters of Credit Outstanding	1,000,000
Amount Available	249,000,000
Consumers Energy Company | Revolving Credit Facilities April 18, 2022
Line of Credit Facility [Line Items]
Amount of Facility	30,000,000
Amount Borrowed	0
Letters of Credit Outstanding	30,000,000
Amount Available	0
CMS Energy | Revolving Credit Facilities June 5, 2024
Line of Credit Facility [Line Items]
Amount of Facility	550,000,000
Amount Borrowed	0
Letters of Credit Outstanding	18,000,000
Amount Available	532,000,000
CMS Energy | Revolving Credit Facilities September 23, 2022
Line of Credit Facility [Line Items]
Amount of Facility	31,000,000
Amount Borrowed	0
Letters of Credit Outstanding	31,000,000
Amount Available	0
CMS Energy | Revolving Credit Facilities September 23, 2022 | Letter of Credit
Line of Credit Facility [Line Items]
Amount of Facility	50,000,000
CMS Enterprises Including Subsidiaries | Revolving Credit Facilities September 25, 2025
Line of Credit Facility [Line Items]
Amount of Facility	39,000,000
Amount Borrowed	0
Letters of Credit Outstanding	39,000,000
Amount Available	0
CMS Enterprises Including Subsidiaries | Revolving Credit Facilities September 30, 2025
Line of Credit Facility [Line Items]
Amount of Facility	18,000,000
Amount Borrowed	0
Letters of Credit Outstanding	8,000,000
Amount Available	10,000,000
Letter of Credit | CMS Enterprises Including Subsidiaries | Revolving Credit Facilities September 30, 2025
Line of Credit Facility [Line Items]
Amount Available	$ 8,000,000

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Financings and Capitalization (Forward Stock Contracts) (Details) - $ / shares	Sep. 30, 2021	Dec. 22, 2020	Sep. 15, 2020
Forward Contracts Entered Into September 15, 2020 And Maturing June 30, 2022
Debt and Equity Securities, FV-NI [Line Items]
Number of Shares			846,759
Initial forward price (in dollars per share)	$ 59.01		$ 61.04
Forward Contracts Entered Into December 22, 2020 And Maturing June 22, 2022
Debt and Equity Securities, FV-NI [Line Items]
Number of Shares		115,595
Initial forward price (in dollars per share)	$ 60.27	$ 61.81

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Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Assets
Restricted cash equivalents	$ 30	$ 17
Derivative instruments	2	1
Liabilities
Derivative instruments	9	11
Consumers Energy Company
Assets
Restricted cash equivalents	26	15
Derivative instruments	2	1
Liabilities
Derivative instruments	0	0
Fair Value, Inputs, Level 1
Assets
Restricted cash equivalents	30	17
Nonqualified deferred compensation plan assets	25	23
Liabilities
Nonqualified deferred compensation plan liabilities	25	23
Fair Value, Inputs, Level 1 | Consumers Energy Company
Assets
Restricted cash equivalents	26	15
Nonqualified deferred compensation plan assets	20	18
Liabilities
Nonqualified deferred compensation plan liabilities	20	18
Fair Value, Inputs, Level 1, 2 and 3
Assets
Total assets	57	41
Liabilities
Total liabilities	34	34
Fair Value, Inputs, Level 1, 2 and 3 | Consumers Energy Company
Assets
Total assets	48	34
Liabilities
Total liabilities	$ 20	$ 18

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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash flow hedge gain (loss)	$ 1	$ (6)
Derivative instruments	9		$ 11
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount	81		85
Other Liabilities | Designated as Hedging Instrument | Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments	$ 6		$ 9

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Financial Instruments (Schedule Of Carrying Amounts And Fair Values Of Financial Instruments) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Liabilities
Current accounts receivable	$ 9	$ 12
Current portion of long term debt	572	571
Current portion of long-term payables	22	6
Carrying Amount
Assets
Long-term receivables	14	17
Liabilities
Long-term debt	12,599	12,315
Long-term payables	31	33
Fair Value
Assets
Long-term receivables	14	17
Liabilities
Long-term debt	13,886	14,601
Long-term payables	32	35
Consumers Energy Company
Liabilities
Current accounts receivable	9	12
Current portion of long term debt	364	364
DB SERP note receivable – related party	7	7
Consumers Energy Company | Carrying Amount
Assets
Long-term receivables	14	17
Notes receivable related party	104	107
Liabilities
Long-term debt	8,392	8,106
Consumers Energy Company | Fair Value
Assets
Long-term receivables	14	17
Notes receivable related party	104	107
Liabilities
Long-term debt	9,411	9,801
Level 1 | Fair Value
Assets
Long-term receivables	0	0
Liabilities
Long-term debt	1,195	1,249
Long-term payables	0	0
Level 1 | Consumers Energy Company | Fair Value
Assets
Long-term receivables	0	0
Notes receivable related party	0	0
Liabilities
Long-term debt	0	0
Level 2 | Fair Value
Assets
Long-term receivables	0	0
Liabilities
Long-term debt	10,727	11,267
Long-term payables	0	0
Level 2 | Consumers Energy Company | Fair Value
Assets
Long-term receivables	0	0
Notes receivable related party	0	0
Liabilities
Long-term debt	7,447	7,716
Level 3 | Fair Value
Assets
Long-term receivables	14	17
Liabilities
Long-term debt	1,964	2,085
Long-term payables	32	35
Level 3 | Consumers Energy Company | Fair Value
Assets
Long-term receivables	14	17
Notes receivable related party	104	107
Liabilities
Long-term debt	$ 1,964	$ 2,085

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Retirement Benefits (Schedule Of Net Benefit Costs) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
DB Pension Plans
Defined Benefit Plan, Roll Forwards [Abstract]
Service cost	$ 14	$ 12	$ 41	$ 37
Interest cost	14	20	44	61
Settlement loss	0	(1)	0	(1)
Expected return on plan assets	(51)	(47)	(155)	(143)
Amortization of
Net loss	25	23	76	67
Prior service cost (credit)	1	0	3	1
Settlement loss	1	0	4	0
Net periodic cost (credit)	4	9	13	24
DB Pension Plans | Consumers Energy Company
Defined Benefit Plan, Roll Forwards [Abstract]
Service cost	14	12	40	36
Interest cost	14	20	42	59
Expected return on plan assets	(49)	(45)	(147)	(136)
Amortization of
Net loss	24	22	73	64
Prior service cost (credit)	1	0	3	1
Settlement loss	1	0	4	0
Net periodic cost (credit)	5	9	15	24
OPEB Plan
Defined Benefit Plan, Roll Forwards [Abstract]
Service cost	5	4	14	12
Interest cost	6	8	17	25
Settlement loss	0	0	0	0
Expected return on plan assets	(28)	(25)	(82)	(75)
Amortization of
Net loss	2	4	6	11
Prior service cost (credit)	(14)	(14)	(40)	(42)
Settlement loss	0	0	0	0
Net periodic cost (credit)	(29)	(23)	(85)	(69)
OPEB Plan | Consumers Energy Company
Defined Benefit Plan, Roll Forwards [Abstract]
Service cost	4	3	13	11
Interest cost	6	8	17	24
Expected return on plan assets	(26)	(23)	(77)	(70)
Amortization of
Net loss	2	4	6	11
Prior service cost (credit)	(12)	(13)	(38)	(40)
Settlement loss	0	0	0	0
Net periodic cost (credit)	$ (26)	$ (21)	$ (79)	$ (64)

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Income Taxes (Schedule Of Effective Income Rate Reconciliation) (Details) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Income Taxes [Line Items]
U.S. federal income tax rate	21.00%	21.00%
Increase (decrease) in income taxes from:
State and local income taxes, net of federal effect	5.50%	4.80%
TCJA excess deferred taxes	(5.80%)	(4.30%)
Production tax credits	(4.80%)	(3.30%)
Accelerated flow-through of regulatory tax benefits	(3.20%)	(1.60%)
Research and development tax credits, net	(0.30%)	(1.60%)
Refund of alternative minimum tax sequestration	0.00%	(1.40%)
Other, net	0.40%	0.10%
Effective tax rate	12.80%	13.70%
Refund of alternative minimum tax sequestration			$ (9)
Consumers Energy Company
Income Taxes [Line Items]
U.S. federal income tax rate	21.00%	21.00%
Increase (decrease) in income taxes from:
State and local income taxes, net of federal effect	5.20%	5.00%
TCJA excess deferred taxes	(4.60%)	(3.60%)
Production tax credits	(3.50%)	(1.90%)
Accelerated flow-through of regulatory tax benefits	(2.20%)	(1.10%)
Research and development tax credits, net	(0.30%)	(1.30%)
Other, net	(0.20%)	(0.30%)
Effective tax rate	15.40%	17.80%
Research Tax Credit Carryforward
Increase (decrease) in income taxes from:
Increase (decrease) in tax credit carryforward			9
Research Tax Credit Carryforward | Consumers Energy Company
Increase (decrease) in income taxes from:
Increase (decrease) in tax credit carryforward			$ 8

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Earnings Per Share - CMS Energy (Basic And Diluted EPS Computations) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income available to common stockholders
Income from continuing operations	$ 153	$ 198	$ 614	$ 556
Loss attributable to noncontrolling interests	(6)	(8)	(18)	(7)
Preferred stock dividends	3	0	3	0
Income from continuing operations available to common stockholders – basic and diluted	$ 156	$ 206	$ 629	$ 563
Average common shares outstanding
Weighted average shares - basic (in shares)	289.1	285.6	288.9	284.8
Dilutive nonvested stock awards (in shares)	0.5	0.8	0.5	0.9
Dilutive forward equity sale contracts (in shares)	0.0	0.5	0.0	0.6
Weighted average shares - diluted (in shares)	289.6	286.9	289.4	286.3
Income from continuing operations per average common share available to common stockholders - Basic (in dollars per share)	$ 0.54	$ 0.72	$ 2.18	$ 1.98
Income from continuing operations per average common share available to common stockholders - Diluted (in dollars per share)	$ 0.54	$ 0.72	$ 2.18	$ 1.97

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Revenue (Components of Operating Revenue) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	$ 1,671	$ 1,468	$ 5,148	$ 4,569
Leasing income	50	36	136	110
Financing income	3	3	11	12
Consumers alternative-revenue programs			1
Total operating revenue	1,725	1,507	5,296	4,691
Electric Utility | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	1,416	1,255	3,705	3,300
Financing income	2	2	7	7
Consumers alternative-revenue programs			1
Total operating revenue	1,419	1,257	3,713	3,307
Gas Utility | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	224	192	1,357	1,212
Financing income	1	1	4	5
Consumers alternative-revenue programs			0
Total operating revenue	225	193	1,361	1,217
Enterprises | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	31	21	86	57
Leasing income	50	36	136	110
Total operating revenue	81	57	222	167
Variable lease income	35	23	94	69
Consumers Energy Company
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	1,640	1,447	5,062	4,512
Financing income	3	3	11	12
Consumers alternative-revenue programs	1		1
Total operating revenue	1,644	1,450	5,074	4,524
Consumers Energy Company | Electric Utility | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	1,416	1,255	3,705	3,300
Financing income	2	2	7	7
Consumers alternative-revenue programs	1		1
Total operating revenue	1,419	1,257	3,713	3,307
Consumers Energy Company | Gas Utility | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	224	192	1,357	1,212
Financing income	1	1	4	5
Consumers alternative-revenue programs	0		0
Total operating revenue	225	193	1,361	1,217
Residential | Consumers Energy Company
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	861	744	2,764	2,431
Residential | Consumers Energy Company | Electric Utility | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	718	624	1,847	1,612
Residential | Consumers Energy Company | Gas Utility | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	143	120	917	819
Commercial | Consumers Energy Company
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	492	440	1,449	1,320
Commercial | Consumers Energy Company | Electric Utility | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	456	413	1,191	1,093
Commercial | Consumers Energy Company | Gas Utility | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	36	27	258	227
Industrial | Consumers Energy Company
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	172	166	494	459
Industrial | Consumers Energy Company | Electric Utility | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	167	161	458	427
Industrial | Consumers Energy Company | Gas Utility | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	5	5	36	32
Other
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	31	21	86	57
Other | Enterprises | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	31	21	86	57
Other | Consumers Energy Company
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	115	97	355	302
Other | Consumers Energy Company | Electric Utility | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	75	57	209	168
Other | Consumers Energy Company | Gas Utility | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized from contracts with customers	$ 40	$ 40	$ 146	$ 134

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Revenue (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Unbilled receivables	$ 340		$ 340		$ 437
Consumers Energy Company
Disaggregation of Revenue [Line Items]
Unbilled receivables	340		340		$ 437
Accounts Receivable
Disaggregation of Revenue [Line Items]
Bad debt expense	6	$ 5	17	$ 18
Accounts Receivable | Consumers Energy Company
Disaggregation of Revenue [Line Items]
Bad debt expense	$ 6	$ 5	$ 17	$ 18

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Cash And Cash Equivalents (Schedule Of Cash And Cash Equivalents, Including Restricted Amounts) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 102	$ 32
Restricted cash and cash equivalents	30	17
Cash and cash equivalents, including restricted amounts	236	185	$ 558	$ 157
Discontinued Operations, Held-for-sale
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	104	136
Consumers Energy Company
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	29	20
Restricted cash and cash equivalents	26	15
Cash and cash equivalents, including restricted amounts	$ 55	$ 35	$ 223	$ 28

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Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Operating Revenue	$ 1,725	$ 1,507	$ 5,296	$ 4,691
Net income available to common stockholders	186	218	711	597
Plant, property, and equipment, gross	29,450		29,450		$ 27,870
Assets	30,513		30,513		29,666
Consumers Energy Company
Segment Reporting Information [Line Items]
Operating Revenue	1,644	1,450	5,074	4,524
Net income available to common stockholders	186	230	711	624
Plant, property, and equipment, gross	28,331		28,331		26,757
Assets	26,189		26,189		25,399
Other reconciling items
Segment Reporting Information [Line Items]
Net income available to common stockholders	(7)	(25)	(27)	(62)
Plant, property, and equipment, gross	22		22		21
Assets	3,177		3,177		3,132
Other reconciling items | Consumers Energy Company
Segment Reporting Information [Line Items]
Net income available to common stockholders	0	0	(1)	(1)
Plant, property, and equipment, gross	22		22		21
Assets	18		18		29
Electric Utility | Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue	1,419	1,257	3,713	3,307
Net income available to common stockholders	195	226	504	463
Plant, property, and equipment, gross	17,992		17,992		17,155
Assets	16,092		16,092		15,829
Electric Utility | Operating Segments | Consumers Energy Company
Segment Reporting Information [Line Items]
Operating Revenue	1,419	1,257	3,713	3,307
Net income available to common stockholders	195	226	504	463
Plant, property, and equipment, gross	17,992		17,992		17,155
Assets	16,154		16,154		15,893
Gas Utility | Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue	225	193	1,361	1,217
Net income available to common stockholders	(9)	4	208	162
Plant, property, and equipment, gross	10,317		10,317		9,581
Assets	9,969		9,969		9,429
Gas Utility | Operating Segments | Consumers Energy Company
Segment Reporting Information [Line Items]
Operating Revenue	225	193	1,361	1,217
Net income available to common stockholders	(9)	4	208	162
Plant, property, and equipment, gross	10,317		10,317		9,581
Assets	10,017		10,017		9,477
Enterprises | Operating Segments
Segment Reporting Information [Line Items]
Operating Revenue	81	57	222	167
Net income available to common stockholders	7	$ 13	26	$ 34
Plant, property, and equipment, gross	1,119		1,119		1,113
Assets	$ 1,275		$ 1,275		$ 1,276

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Variable Interest Entities (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($) MW	Dec. 31, 2020 USD ($)
Variable Interest Entity [Line Items]
Investments	$ 73	$ 70
Variable Interest Entity, Primary Beneficiary | Aviator Wind
Variable Interest Entity [Line Items]
Ownership interest	51.00%
Nameplate capacity (in MW) | MW	525
Variable Interest Entity, Primary Beneficiary | Aviator Wind Class B Membership
Variable Interest Entity [Line Items]
Noncontrolling ownership interest	49.00%
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investments	$ 73	$ 70
Variable Interest Entity, Not Primary Beneficiary | T.E.S. Filer City
Variable Interest Entity [Line Items]
Ownership interest	50.00%
Variable Interest Entity, Not Primary Beneficiary | Grayling
Variable Interest Entity [Line Items]
Ownership interest	50.00%
Variable Interest Entity, Not Primary Beneficiary | Genesee
Variable Interest Entity [Line Items]
Ownership interest	50.00%
Variable Interest Entity, Not Primary Beneficiary | Craven
Variable Interest Entity [Line Items]
Ownership interest	50.00%

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Variable Interest Entities (Consolidated Information of Variable Interest Entity) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 102	$ 32
Accounts receivable	713	853
Prepayments and other current assets	130	104
Plant, property, and equipment, net	21,934	21,017
Total Assets	30,513	29,666
Accounts payable	787	661
Asset retirement obligations	599	553
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Cash and cash equivalents	15	7
Accounts receivable	8	5
Prepayments and other current assets	1	1
Plant, property, and equipment, net	675	692
Total Assets	699	705
Accounts payable	13	3
Asset retirement obligations	20	19
Total liabilities	$ 33	$ 22

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Exit Activities and Discontinued Operations - Narrative (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended		24 Months Ended
	Oct. 01, 2021	Dec. 31, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021
Discontinued Operations, Held-for-sale | EnerBank
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain from divestiture of business			$ (3)	$ 0	$ (8)	$ 0
Discontinued Operations, Held-for-sale | EnerBank | Subsequent Event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses	$ 1,000
Discontinued Operations, Held-for-sale | EnerBank | Forecast | Subsequent Event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain from divestiture of business		$ 660
Retention Benefits | D.E. Karn Generating Complex
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Expected cost			35		35		$ 35
Retention and severance costs					0	11	16
Costs incurred and capitalized					1	$ 1
Retention Benefits | D.E. Karn Generating Complex | Retention Incentive Program
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Regulatory asset			$ 5		$ 5		5
Retention Benefits | D.E. Karn Generating Complex | Property, Plant and Equipment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Costs incurred and capitalized							$ 4

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Exit Activities and Discontinued Operations - Schedule of Retention Benefit Liability Roll Forward (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended		24 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Dec. 31, 2020
Restructuring Reserve [Roll Forward]
Other current liabilities	$ 183	$ 183		$ 183	$ 133
Retention Benefits | D.E. Karn Generating Complex
Restructuring Reserve [Roll Forward]
Retention benefit liability at beginning of period		11	$ 4
Costs incurred and charged to maintenance and other operating expenses		0	11	16
Costs deferred as a regulatory asset	1	5	0
Costs incurred and capitalized		1	1
Retention benefit liability at the end of the period	17	17	16	17
Other current liabilities	$ 5	$ 5	$ 7	$ 5

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Exit Activities and Discontinued Operations - Income from Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax expense	$ 9	$ 4	$ 25	$ 10
Income from discontinued operations, net of tax	30	12	82	34
Discontinued Operations, Held-for-sale | EnerBank
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating revenue	70	68	209	191
Operating expenses	17	39	60	104
Interest expense	11	13	34	43
Income before income taxes	42	16	115	44
Transaction costs	(3)	0	(8)	0
Income from discontinued operations before income taxes	39	16	107	44
Income tax expense	9	4	25	10
Income from discontinued operations, net of tax	$ 30	$ 12	$ 82	$ 34

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Exit Activities and Discontinued Operations - Assets and Liabilities of Discontinued Operation (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current
Total current assets	$ 494	$ 429
Non‑current
Total non‑current assets	2,606	2,680
Current
Total current liabilities	1,233	953
Non‑current
Total non‑current liabilities	1,523	1,894
Discontinued Operations, Held-for-sale
Current
Cash and cash equivalents	104	136
Discontinued Operations, Held-for-sale | EnerBank
Current
Cash and cash equivalents	104	136
Accounts receivable and other current assets	143	18
Notes receivable, allowance, current	28	32
Notes receivable, less allowance of $28 in 2021 and $32 in 2020	247	275
Total current assets	494	429
Non‑current
Plant, property, and equipment, net	29	22
Notes receivable, allowance, noncurrent	84	91
Notes receivable, less allowance of $84 in 2021 and $91 in 2020	2,532	2,612
Other non‑current assets	45	46
Total non‑current assets	2,606	2,680
Total assets	3,100	3,109
Current
Current portion of long-term debt	1,199	915
Accounts payable and other current liabilities	34	38
Total current liabilities	1,233	953
Non‑current
Long-term debt	1,522	1,890
Other non‑current liabilities	1	4
Total non‑current liabilities	1,523	1,894
Total liabilities	$ 2,756	$ 2,847