Exhibit 99.1

The expenses to be incurred by CMS Energy Corporation relating to the offering of 9,200,000 depositary shares, each representing a 1/1,000th interest in a share of its 4.200% Cumulative Redeemable Perpetual Preferred Stock, Series C (Liquidation Preference Equivalent to $25.00 per Depositary Share), under CMS Energy Corporation’s Registration Statement on Form S-3 (Registration No. 333-236742) and a related prospectus supplement filed with the Securities and Exchange Commission and dated June 24, 2021 are estimated to be as follows:

Estimated Fees

SEC Registration Fee	$	25,093
Services of Independent Registered Public Accounting Firms		75,000
Transfer and Depositary Agent Fees		20,000
Listing and Filing Fees		5,000
Legal Fees and Expenses		500,000
Rating Agency Fees		478,000
Printing and Delivery Expenses		15,000
Miscellaneous Expenses		15,000
Total	$	1,133,093