CMS

EX-99.1

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EXHIBIT 99.1

Exhibit 99.1

CMS Energy Announces Third Quarter Results,

Reaffirms 2026 and 2027 Adjusted EPS Guidance

JACKSON,

Mich., Oct. 27, 2026 – CMS Energy announced today reported earnings per share of $0.39 for the third quarter of 2026, compared to $0.92 per share for 2025. The company’s adjusted earnings per share for the third quarter were $1.44, compared to $0.93 per share for 2025. Both the quarter and year-to-date GAAP results reflect asset impairment and restructuring activities associated with NorthStar Clean Energy. For the first nine months of the year, the company reported $1.86 per share, compared to $2.59 per share for the same timeframe in 2025. On an adjusted earnings per share basis year to date, the company reported $2.95 per share in 2026, compared to $2.66 per share in 2025.

2026 Financial Results**

Financial Results Q3 YTD

Reported Total EPS (GAAP) $0.39 $1.86

Asset impairment and restructuring activities 1.08 1.09

Other (0.03) (0.00)

Adjusted EPS (non-GAAP) $1.44 $2.95

“I’m pleased with the progress in the restructuring of NorthStar Clean Energy,” said Garrick Rochow, President and CEO of CMS Energy and Consumers Energy. “This restructuring further strengthens our utility-focused business model, enhances earnings quality, provides greater financial flexibility, and positions us to make the long-term utility investments needed to serve our customers and grow our communities.”

CMS Energy reaffirmed its 2026 adjusted earnings guidance of $3.83 to $3.90 per share*, (*See below for important information about non-GAAP measures) 2027 adjusted earnings guidance of $4.08 to $4.17, and long-term adjusted EPS growth of 6 to 8 percent, with continued confidence toward the high end.

CMS Energy (NYSE: CMS) is a Michigan-based energy provider featuring Consumers Energy as its primary business. It also owns and operates independent power generation businesses.

# # #

CMS Energy will hold a webcast to discuss its 2026 third quarter results and provide a business and financial outlook on Tuesday, October 27 at 10:00 a.m. (EDT). To participate in the webcast, go to CMS Energy’s homepage (cmsenergy.com) and select “Events and Presentations.”

Important information for investors about non-GAAP measures and

other disclosures.

This news release contains non-Generally Accepted Accounting Principles

(non-GAAP) measures, such as adjusted earnings. All references to net income refer to net income available to common stockholders and references to earnings per share are on a diluted basis. Adjustments could include items such as discontinued operations, asset sales, impairments, restructuring costs, business optimization initiative, major enterprise resource planning software implementations, changes in accounting principles, voluntary separation program, changes in federal and state tax policy, regulatory items from prior years, unrealized gains or losses from mark-to-market adjustments, recognized in net income related to NorthStar Clean Energy's interest expense, or other items. Management views adjusted earnings as a key measure of the company's present operating financial performance and uses adjusted earnings for external communications with analysts and investors. Internally, the company uses adjusted earnings to measure and assess performance. Because the company is not able to estimate the impact of specific line items, which have the potential to significantly impact, favorably or unfavorably, the company's reported earnings in future periods, the company is not providing reported earnings guidance nor is it providing a reconciliation for the comparable future period earnings. The company's adjusted earnings should be considered supplemental information to assist in understanding our business results, rather than as a substitute for the reported earnings.

**Per-share impacts are calculated independently for each reporting period in accordance with ASC 260 and may not be additive due to differences in weighted-average shares outstanding between periods.

This news release contains "forward-looking statements." The forward-looking statements are subject to risks and uncertainties that could cause CMS Energy's and Consumers Energy's results to differ materially. All forward-looking statements should be considered in the context of the risk and other factors detailed from time to time in CMS Energy's and Consumers Energy's Securities and Exchange Commission filings.

Investors and others should note that CMS Energy routinely posts important information on its website and considers the Investor Relations section, www.cmsenergy.com/investor-relations, a channel of distribution.

Media Contacts: Katie Carey, 517/740-1739

Investment Analyst Contact: Travis Uphaus, 517/768-3114

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Page 1 of 3

CMS ENERGY CORPORATION

Consolidated Statements of Income

(Unaudited)

In Millions, Except Per Share Amounts

Three Months Ended Nine Months Ended

9/30/26 9/30/25 9

EX-99.1

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EXHIBIT 99.1

Exhibit 99.1

CMS Energy Announces Second Quarter Results, Strategic Decision on NorthStar Clean Energy Services, Introduces Guidance for 2027

JACKSON, Mich., July 28, 2026 – CMS Energy announced today reported earnings per share of $0.37 for the second quarter of 2026, compared to $0.66 per share for 2025. The company’s adjusted earnings per share for the second quarter were $0.37, compared to $0.71 per share for 2025. For the first six months of the year, the company reported $1.47 per share compared to $1.67 per share for the same timeframe in 2025. On an adjusted earnings per share basis year to date, the company reported $1.50 per share in 2026 compared to $1.73 per share in 2025.

CMS Energy also announced the completion of a strategic review at NorthStar Clean Energy, and with Board approval, the company is exiting non-utility renewables development and retaining Michigan-based assets, including Dearborn Industrial Generation (or DIG). This will simplify the business, reduce financing needs, and allow the company to focus more fully on providing regulated energy services.

CMS Energy reaffirmed its 2026 adjusted earnings guidance of $3.83 to $3.90 per share (*See below for important information about non-GAAP measures) and long-term adjusted EPS growth of 6 to 8 percent, with continued confidence toward the high end. CMS Energy is introducing 2027 earnings guidance of $4.08 to $4.17.

CMS Energy (NYSE: CMS) is a Michigan-based energy provider featuring Consumers Energy as its primary business. It also owns and operates independent power generation businesses.

# # #

CMS Energy will hold a webcast to discuss its 2026 second quarter results and provide a business and financial outlook on Tuesday, July 28 at 10:00 a.m. (EDT). To participate in the webcast, go to CMS Energy’s homepage (cmsenergy.com) and select “Events and Presentations.”

Important information for investors about non-GAAP measures and other disclosures.

This news release contains non-Generally Accepted Accounting Principles

(non-GAAP) measures, such as adjusted earnings. All references to net income refer to net income available to common stockholders and references to earnings per share are on a diluted basis. Adjustments could include items such as discontinued operations, asset sales, impairments, restructuring costs, business optimization initiative, major enterprise resource planning software implementations, changes in accounting principles, voluntary separation program, changes in federal tax policy, regulatory items from prior years, unrealized gains or losses from mark-to-market adjustments, recognized in net income related to NorthStar Clean Energy's interest expense, or other items. Management views adjusted earnings as a key measure of the company's present operating financial performance and uses adjusted earnings for external communications with analysts and investors. Internally, the company uses adjusted earnings to measure and assess performance. Because the company is not able to estimate the impact of specific line items, which have the potential to significantly impact, favorably or unfavorably, the company's reported earnings in future periods, the company is not providing reported earnings guidance nor is it providing a reconciliation for the comparable future period earnings. The company's adjusted earnings should be considered supplemental information to assist in understanding our business results, rather than as a substitute for the reported earnings.

This news release contains "forward-looking statements." The forward-looking statements are subject to risks and uncertainties that could cause CMS Energy's and Consumers Energy's results to differ materially. All forward-looking statements should be considered in the context of the risk and other factors detailed from time to time in CMS Energy's and Consumers Energy's Securities and Exchange Commission filings.

Investors and others should note that CMS Energy routinely posts important information on its website and considers the Investor Relations section, www.cmsenergy.com/investor-relations, a channel of distribution.

Media Contacts: Katie Carey, 517/740-1739

Investment Analyst Contact: Travis Uphaus, 517/817-9241

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Page 1 of 3

CMS ENERGY CORPORATION

Consolidated Statements of Income

(Unaudited)

In Millions, Except Per Share Amounts

Three Months Ended Six Months Ended

6/30/26 6/30/25 6/30/26 6/30/25

Operating revenue $1,829 $1,838 $4,559 $4,285

Operating expenses 1,565 1,521 3,805 3,474

Operating Income 264 317 754 811

Other income 75 137 150 187

Interest charges 210 199 413 385

Income Before Income Taxes 129 255 491 613

Income tax expense 33 62 118 125

Net Income 96 193 373 488

Loss attributable to noncontrolling interests (24) (8) (87) (17)

Net Income Attributable to CMS Energy 120 201 460 505

Preferred stock dividends 3 3 5 5

Net Income Available to Common Stockholders $117 $198 $455

EX-99.1

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EXHIBIT 99.1

Exhibit 99.1

CMS Energy Announces First Quarter Results for 2026, Reaffirms 2026 Adjusted EPS Guidance

JACKSON, Mich., April 28, 2026 – CMS Energy announced today reported earnings per share of $1.10 for the first quarter of 2026, compared to $1.01 per share for 2025. The company’s adjusted earnings per share for the first quarter were $1.13, compared to $1.02 per share for 2025.

CMS Energy reaffirmed its 2026 adjusted earnings guidance of $3.83 to $3.90 per share (*See below for important information about non-GAAP measures) and long-term adjusted EPS growth of 6 to 8 percent, with continued confidence toward the high end.

“Strong execution in the first quarter has positioned us well for the year ahead,” said Garrick Rochow, President and CEO of CMS Energy and Consumers Energy. “We’re building momentum across our triple bottom line in support of customers, communities and investors.”

CMS Energy (NYSE: CMS) is a Michigan-based energy provider featuring Consumers Energy as its primary business. It also owns and operates independent power generation businesses.

# # #

CMS Energy will hold a webcast to discuss its 2026 first quarter results and provide a business and financial outlook on Tuesday, April 28 at 10:00 a.m. (EDT). To participate in the webcast, go to CMS Energy’s homepage (cmsenergy.com) and select “Events and Presentations.”

Important information for investors about non-GAAP measures and other disclosures.

This news release contains non-Generally Accepted Accounting Principles (non-GAAP) measures, such as adjusted earnings. All references to net income refer to net income available to common stockholders and references to earnings per share are on a diluted basis. Adjustments could include items such as discontinued operations, asset sales, impairments, restructuring costs, business optimization initiative, major enterprise resource planning software implementations, changes in accounting principles, voluntary separation program, changes in federal tax policy, regulatory items from prior years, unrealized gains or losses from mark-to-market adjustments, recognized in net income related to NorthStar Clean Energy's interest expense, or other items. Management views adjusted earnings as a key measure of the company's present operating financial performance and uses adjusted earnings for external communications with analysts and investors. Internally, the company uses adjusted earnings to measure and assess performance. Because the company is not able to estimate the impact of specific line items, which have the potential to significantly impact, favorably or unfavorably, the company's reported earnings in future periods, the company is not providing reported earnings guidance nor is it providing a reconciliation for the comparable future period earnings. The company's adjusted earnings should be considered supplemental information to assist in understanding our business results, rather than as a substitute for the reported earnings.

This news release contains "forward-looking statements." The forward-looking statements are subject to risks and uncertainties that could cause CMS Energy's and Consumers Energy's results to differ materially. All forward-looking statements should be considered in the context of the risk and other factors detailed from time to time in CMS Energy's and Consumers Energy's Securities and Exchange Commission filings.

Investors and others should note that CMS Energy routinely posts important information on its website and considers the Investor Relations section, www.cmsenergy.com/investor-relations, a channel of distribution.

Media Contacts: Katie Carey, 517/740-1739

Investment Analyst Contact: Travis Uphaus, 517/817-9241

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Page 1 of 3

CMS ENERGY CORPORATION

Consolidated Statements of Income

(Unaudited)

In Millions, Except Per Share Amounts

Three Months Ended

3/31/26 3/31/25

Operating revenue $2,730 $2,447

Operating expenses 2,240 1,953

Operating Income 490 494

Other income 75 50

Interest charges 203 186

Income Before Income Taxes 362 358

Income tax expense 85 63

Net Income 277 295

Loss attributable to noncontrolling interests (63) (9)

Net Income Attributable to CMS Energy 340 304

Preferred stock dividends 2 2

Net Income Available to Common Stockholders $338 $302

Diluted Earnings Per Average Common Share $1.10 $1.01

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CMS ENERGY CORPORATION

Summarized Consolidated Balance Sheets

(Unaudited)

In Millions

As of

3/31/26 12/31/25

Assets

Current assets

Cash and cash equivalents $175 $509

Restricted cash and cash equivalents 88 106

Other current assets 2,762 2,857

Total current assets 3,025 3,472

Non-current assets

Plant, property, and equipment 31,533 30,680

Other non-current assets

5,727 5,789

Total Assets $40,285 $39,941

Liabilities and Equity

Current liabilities (1) $2,232 $2,592

Non-current liabilities (1)

8,924 8,740

Capitalization

Debt and finance leases (excluding