| Asunto Oy Lepolantie 43-45 CVR 0119719-1 | BoardBoard of Directors | Since 2025 | — | Active |
| Alusta Consulting Oy CVR 3260631-4 | BoardBoard of Directors | Since 2022 | — | Active |
| Suomi Helios Oy CVR 3300472-9 | OtherConfidential Clerk | Since 2023 | — | Active |
| Sauli Lorin Oy CVR 3303370-6 | BoardBoard of Directors | Since 2022 | — | Active |
| Solmar Consulting Oy CVR 3306059-5 | BoardChairperson | Since 2022 | — | Active |
| Kärrbyn Aurinkoenergia Oy CVR 3313378-2 | OtherConfidential Clerk | Since 2023 | — | Active |
| Savitaipaleen Aurinkoenergia Oy CVR 3335731-3 | OtherConfidential Clerk | Since 2023 | — | Active |
| Mustanojan Aurinkoenergia Oy CVR 3335732-1 | OtherConfidential Clerk | Since 2023 | — | Active |
| Solkraft Stora Sandjärv Ab CVR 3335734-8 | OtherConfidential Clerk | Since 2023 | — | Active |
| Musan Aurinkovoima Oy CVR 3335735-6 | OtherConfidential Clerk | Since 2023 | — | Active |
| Suomi Helios P004 Oy CVR 3335736-4 | OtherConfidential Clerk | Since 2023 | — | Active |
| Suomi Helios P011 Oy CVR 3415533-4 | OtherConfidential Clerk | Since 2024 | — | Active |
| Paavonpuisto Oy CVR 3415534-2 | OtherConfidential Clerk | Since 2024 | — | Active |
| Viherniitynvoima Oy CVR 3415536-9 | OtherConfidential Clerk | Since 2024 | — | Active |
| Toiskan Aurinkovoima Oy CVR 3415537-7 | OtherConfidential Clerk | Since 2024 | — | Active |
| Hervan Akkuvarasto Oy CVR 3415538-5 | OtherConfidential Clerk | Since 2024 | — | Active |
| Niinikosken Aurinkoenergia Oy CVR 3415539-3 | OtherConfidential Clerk | Since 2024 | — | Active |
| Suomi Helios P016 Oy CVR 3526019-5 | OtherConfidential Clerk | Since 2025 | — | Active |
| Suomi Helios P015 Oy CVR 3526020-8 | OtherConfidential Clerk | Since 2025 | — | Active |
| Suomi Helios P014 Oy CVR 3526021-6 | OtherConfidential Clerk | Since 2025 | — | Active |
| Suomi Helios P013 Oy CVR 3526022-4 | OtherConfidential Clerk | Since 2025 | — | Active |
| Suomi Helios P012 Oy CVR 3526023-2 | OtherConfidential Clerk | Since 2025 | — | Active |
