For the purpose of this filing, information is organized under the headings of CMS Energy Corporation (Tier 1), CMS Capital, L.L.C. (Tier 2), NorthStar Clean Energy Company, formerly known as CMS Enterprises Company (Tier 2), CMS Treasury Services, LLC (Tier 2), and Consumers Energy Company (Tier 2). As set forth in detail below, CMS Energy Corporation is the parent company of CMS Capital, L.L.C., NorthStar Clean Energy Company, CMS Treasury Services, LLC, and Consumers Energy Company. All ownership interests are 100 percent unless indicated parenthetically to the contrary and are accurate as of December 31, 2024.
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| NAME of COMPANY | JURISDICTION of ORGANIZATION |
| 01 CMS ENERGY CORPORATION | Michigan |
| 02 CMS Capital, L.L.C. | Michigan |
| 03 CMS Land Company | Michigan |
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| 02 NorthStar Clean Energy Company | Michigan |
| 03 NSCE Development Company, LLC | Michigan |
| 04 Filer City Carbon Capture, LLC | Michigan |
| 04 Michigan Carbon Free Energy | Michigan |
| 03 NSCE DevCo Partner, LLC | Michigan |
| 03 Dearborn Industrial Energy, L.L.C. | Michigan |
| 04 Dearborn Industrial Generation, L.L.C. | Michigan |
| 03 CMS Energy Resource Management Company | Michigan |
| 04 CMS ERM Michigan LLC | Michigan |
| 03 CMS Enterprises Sustainable Energy, LLC | Michigan |
| 04 NorthStar Onsite, LLC | Delaware |
| 04 Grand River Solar, LLC | Michigan |
| 05 Michigan Solar Holdings, LLC | Michigan |
| 06 BG Solar Equity Holdings, LLC | Michigan |
| 07 BG Solar Holdings I, LLC | Michigan |
| 08 BG Solar Holdings, LLC | Michigan |
| 05 Branch Solar, LLC | Delaware |
| 05 Lake Iris Solar, LLC | Delaware |
| 05 Delta Solar Equity Holdings, LLC | Delaware |
| 06 Delta Solar Power I, LLC | Michigan |
| 06 Delta Solar Power II, LLC | Michigan |
| 05 Flambeau Solar Partners, LLC | Delaware |
| 05 Hart Solar Holdings II, LLC | Delaware |
| 06 Hart Solar Holdings I, LLC | Delaware |
| 07 Hart Solar Partners, LLC | Delaware |
| 05 Newport Solar Equity Holdings, LLC | Delaware |
| 06 Newport Solar Holdings II, LLC (99%) | Delaware |
| 07 Newport Solar Holdings I, LLC | Delaware |
| 06 Newport Solar Holdings III, LLC | Delaware |
| 07 Newport Solar, LLC | Delaware |
| 06 Newport Solar Holdings IV, Inc. | Delaware |
| 07 Newport Solar Holdings II, LLC (1%) | Delaware |
| 05 Genesee Solar Energy, LLC | Delaware |
| 05 Hercules Solar, LLC | Delaware |
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| NAME of COMPANY | JURISDICTION of ORGANIZATION |
| 05 Diamond Solar, LLC | Missouri |
| 05 Allegan Solar, LLC | Michigan |
| 04 Grand River Wind, LLC | Michigan |
| 05 NWO Wind Equity Holdings, LLC | Delaware |
| 06 NWO Holdco I, LLC | Delaware |
| 07 NWO Holdco, L.L.C. | Delaware |
| 08 Northwest Ohio Wind, LLC | Ohio |
| 09 Northwest Ohio IA, LLC (97%) | Delaware |
| 05 Northwest Ohio Solar, LLC | Delaware |
| 06 Northwest Ohio IA, LLC (3%) | Delaware |
| 05 Aviator Wind Equity Holdings, LLC (51%) | Delaware |
| 06 AW Holdings III, LLC | Delaware |
| 07 AW Holdings II, LLC | Delaware |
| 08 AW Holdings I, LLC | Delaware |
| 09 Aviator Wind Holdings, LLC | Delaware |
| 10 Aviator Wind, LLC | Delaware |
| 03 CMS Gas Transmission Company | Michigan |
04 CMS International Ventures, L.L.C. (37.01%) (See Exhibit A for list of subsidiaries) | Michigan |
03 CMS International Ventures, L.L.C. (61.49%) (See Exhibit A for list of subsidiaries) | Michigan |
03 HYDRA‑CO Enterprises, Inc. (See Exhibit B for list of subsidiaries) | New York |
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| 02 CMS Treasury Services, LLC | Michigan |
| |
| 02 Consumers Energy Company | Michigan |
| Conducts business under the following assumed names: | |
| Consumers Business Energy Services | |
| Consumers Energy | |
| Consumers Energy Business Services | |
| Consumers Energy Consultants | |
| Consumers Energy Contractor Network | |
| Consumers Energy Dealer Network | |
| Consumers Energy Finance | |
| Consumers Energy Fitness Audits | |
| Consumers Energy Group | |
| Consumers Energy HouseCall | |
| Consumers Energy HouseCall Services | |
| Consumers Energy Management | |
| Consumers Energy Resources | |
| Consumers Energy Security Services | |
| Consumers Energy Services | |
| Consumers Energy Systems | |
| | | | | |
| NAME of COMPANY | JURISDICTION of ORGANIZATION |
| Consumers Energy Traders | |
| Consumers Power | |
| Consumers Power Company | |
| Laboratory Commercial Services | |
| Laboratory Services | |
| Michigan Gas Storage | |
| Michigan Gas Storage Company | |
| Technical Training Centers | |
| Zeeland Power Company | |
| 03 CMS Engineering Co. | Michigan |
| 03 Consumers 2014 Securitization Funding LLC | Delaware |
| 03 Consumers Campus Holdings, LLC | Michigan |
| 03 Consumers Receivables Funding II, LLC | Delaware |
| 03 ES Services Company | Michigan |
| 03 Consumers 2023 Securitization Funding LLC | Delaware |
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Exhibit A
Subsidiaries of CMS International Ventures, L.L.C. (98.5%)
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| NAME of COMPANY | JURISDICTION of ORGANIZATION |
| 04 CMS Electric & Gas, L.L.C. | Michigan |
| 05 CMS Venezuela, S.A. | Venezuela |
| 05 ENELMAR S.A. | Venezuela |
Exhibit B
Subsidiaries of HYDRA‑CO Enterprises, Inc.
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| NAME of COMPANY | JURISDICTION of ORGANIZATION |
| 04 CMS Generation Filer City, Inc. | Michigan |
| 05 T.E.S. Filer City Station Limited Partnership (50%) | Michigan |
| 04 CMS Generation Filer City Operating LLC | Michigan |
| 04 CMS Generation Genesee Company | Michigan |
| 05 Genesee Power Station Limited Partnership (1% GP) | Delaware |
| 04 CMS Generation Grayling Company | Michigan |
| 05 Grayling Generating Station Limited Partnership (1% GP) | Michigan |
| 06 AJD Forest Products Limited Partnership (49.5% LP) | Michigan |
| 06 GGS Holdings Company | Michigan |
| 07 AJD Forest Products Limited Partnership (0.5% GP) | Michigan |
| 05 Grayling Partners Land Development, L.L.C. (1%) | Michigan |
| 04 CMS Generation Grayling Holdings Company | Michigan |
| 05 Grayling Generating Station Limited Partnership (49% LP) | Michigan |
| 06 AJD Forest Products Limited Partnership (49.5%LP) | Michigan |
| 06 GGS Holdings Company | Michigan |
| 07 AJD Forest Products Limited Partnership (0.5% GP) | Michigan |
| 05 Grayling Partners Land Development, L.L.C. (49%) | Michigan |
| 04 CMS Generation Holdings Company | Michigan |
| 05 Genesee Power Station Limited Partnership (48.75% LP) | Delaware |
| 05 GPS Newco, L.L.C. (50%) | Kansas |
| 06 Genesee Power Station Limited Partnership (0.5% LP) | Delaware |
| 04 CMS Generation Michigan Power L.L.C. | Michigan |
| 05 Kalamazoo Holdco, LLC | Michigan |
| 05 Kalamazoo Generating Station, LLC | Michigan |
| 05 Livingston Holdco, LLC | Michigan |
| 05 Livingston Generating Station, LLC | Michigan |
| 04 CMS Generation Operating Company II, Inc. | New York |
| 04 CMS Generation Operating LLC | Michigan |
| 04 CMS Generation Recycling Company | Michigan |
| 05 Mid-Michigan Recycling, L.C. (50%) | Michigan |
| 04 Craven County Wood Energy Limited Partnership (44.99% LP) | Delaware |
| 04 Dearborn Generation Operating, L.L.C. | Michigan |
| 04 HCE-Biopower, Inc. | New York |
| 05 IPP Investment Partnership (51%) | |
| 06 Craven County Wood Energy Limited Partnership (0.01% LP) | Delaware |
| 04 IPP Investment Partnership (49%) | |
| 05 Craven County Wood Energy Limited Partnership (0.01% LP) | Delaware |
| 04 New Bern Energy Recovery, Inc. | Delaware |
| 05 Craven County Wood Energy Limited Partnership (5% GP) | Delaware |
