Regulatory Matters	3 Months Ended
Regulatory Matters	Mar. 31, 2023
Public Utilities, General Disclosures [Line Items]
Regulatory Matters	Regulatory Matters Regulatory matters are critical to Consumers. The Michigan Attorney General, ABATE, the MPSC Staff, residential customer advocacy groups, environmental organizations, 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. 2022 Electric Rate Case: In January 2023, the MPSC approved a settlement agreement authorizing an annual rate increase of $155 million, based on a 9.9-percent authorized return on equity. The MPSC also approved a surcharge for the recovery of $6 million of depreciation, property tax, and interest expense related to distribution investments made in 2021 that exceeded what was authorized in rates in accordance with the December 2020 electric rate order. The new rates became effective January 20, 2023. Voluntary Refund Mechanism: In December 2022, the MPSC issued an order authorizing Consumers to refund $22 million voluntarily to utility customers. In January 2023, Consumers submitted a filing proposing that the refund take the form of incremental funding to cover the cost of, and return on, certain distribution capital investments above amounts included in rates and contributions to programs that assist vulnerable customers. In April 2023, the MPSC approved the refund of $5 million in the form of contributions to programs that assist vulnerable customers, but found that Consumers should demonstrate a more direct benefit to customers for the remaining $17 million. The MPSC stated that Consumers may propose a different methodology to refund that amount. Consumers filed a revised proposal, requesting that the remaining $17 million be refunded in the form of incremental forestry work and to provide bill assistance to support vulnerable electric customers. 2022 PSCR Underrecovery: Due to rising fuel prices during 2022, the cost of electric generation increased, resulting in higher market prices for electricity. Accordingly, Consumers’ power supply costs for 2022 were significantly higher than those projected in its 2022 PSCR plan. Consumers included a projection of its full-year 2022 underrecovery in the 2023 PSCR plan filed with the MPSC in September 2022. In January 2023, Consumers filed a motion for a temporary order in its 2023 PSCR plan, requesting that the MPSC approve only a third of the 2022 underrecovery amount for recovery in 2023, with the remaining amount to be recovered equally during 2024 and 2025. The MPSC approved Consumers’ motion in February 2023. Recovering the 2022 underrecovery over three years will provide immediate relief to electric customers, and the financial impact will be neutral to Consumers’ earnings.
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, residential customer advocacy groups, environmental organizations, 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. 2022 Electric Rate Case: In January 2023, the MPSC approved a settlement agreement authorizing an annual rate increase of $155 million, based on a 9.9-percent authorized return on equity. The MPSC also approved a surcharge for the recovery of $6 million of depreciation, property tax, and interest expense related to distribution investments made in 2021 that exceeded what was authorized in rates in accordance with the December 2020 electric rate order. The new rates became effective January 20, 2023. Voluntary Refund Mechanism: In December 2022, the MPSC issued an order authorizing Consumers to refund $22 million voluntarily to utility customers. In January 2023, Consumers submitted a filing proposing that the refund take the form of incremental funding to cover the cost of, and return on, certain distribution capital investments above amounts included in rates and contributions to programs that assist vulnerable customers. In April 2023, the MPSC approved the refund of $5 million in the form of contributions to programs that assist vulnerable customers, but found that Consumers should demonstrate a more direct benefit to customers for the remaining $17 million. The MPSC stated that Consumers may propose a different methodology to refund that amount. Consumers filed a revised proposal, requesting that the remaining $17 million be refunded in the form of incremental forestry work and to provide bill assistance to support vulnerable electric customers. 2022 PSCR Underrecovery: Due to rising fuel prices during 2022, the cost of electric generation increased, resulting in higher market prices for electricity. Accordingly, Consumers’ power supply costs for 2022 were significantly higher than those projected in its 2022 PSCR plan. Consumers included a projection of its full-year 2022 underrecovery in the 2023 PSCR plan filed with the MPSC in September 2022. In January 2023, Consumers filed a motion for a temporary order in its 2023 PSCR plan, requesting that the MPSC approve only a third of the 2022 underrecovery amount for recovery in 2023, with the remaining amount to be recovered equally during 2024 and 2025. The MPSC approved Consumers’ motion in February 2023. Recovering the 2022 underrecovery over three years will provide immediate relief to electric customers, and the financial impact will be neutral to Consumers’ earnings.