| Keskinäinen Eläkevakuutusyhtiö Ilmarinen CVR 0107638-1 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Posti Jakelu Oy CVR 0109357-9 | OtherPerson with significant control | 2018 – 2021 | — | Active |
| Enersense International Oyj CVR 0609766-7 | OtherConfidential Clerk | 2024 – 2025 | — | Active |
| Sata Shipbuilding Oy CVR 0759548-1 | OtherConfidential Clerk | 2024 – 2025 | — | Active |
| Enersense Works Oy CVR 0794532-2 | OtherConfidential Clerk | 2024 – 2025 | — | Active |
| Global Mail FP Oy CVR 1014863-1 | BoardBoard of Directors | 2019 – 2021 | — | Dissolved |
| Posti Group Oyj CVR 1531864-4 | OtherPerson with significant control | 2018 – 2021 | — | Active |
| Enersense Wind Oy CVR 2337313-3 | BoardBoard of Directors | 2024 – 2025 | — | Active |
| Enersense IN Oy CVR 2402137-5 | OtherConfidential Clerk | 2024 – 2025 | — | Active |
| Oima Oy CVR 2402870-2 | BoardBoard of Directors | 2021 – 2025 | — | Active |
| Enersense Oy CVR 2442767-4 | OtherConfidential Clerk | 2024 – 2025 | — | Dissolved |
| Enersense Engineering Oy CVR 2490497-9 | OtherConfidential Clerk | 2024 – 2025 | — | Active |
| Lehtivuoret Wind Farm Oy CVR 2539876-4 | BoardBoard of Directors | 2024 – 2025 | — | Active |
| Fortum Portfolio Management Oy CVR 2552006-1 | BoardBoard of Directors | 2024 – 2025 | — | Active |
| Fortum Tuuli ja Aurinko Oy CVR 2559455-4 | BoardBoard of Directors | 2024 – 2025 | — | Active |
| Enersense PN Oy CVR 2598027-9 | OtherConfidential Clerk | 2024 – 2025 | — | Active |
| Posti Global Oy CVR 2640761-8 | BoardBoard of Directors | 2019 – 2021 | — | Dissolved |
| Enersense TN Oy CVR 2641532-7 | OtherConfidential Clerk | 2024 – 2025 | — | Active |
| Kurikka Energy Oy CVR 2677235-9 | BoardBoard of Directors | 2024 – 2025 | — | Active |
| Enersense Services Oyj CVR 2727327-9 | OtherConfidential Clerk | 2024 – 2025 | — | Active |
| Enersense Charging Oy CVR 2851232-3 | OtherConfidential Clerk | 2024 – 2025 | — | Active |
| Posti Fokus Oy CVR 2952893-3 | BoardBoard of Directors | 2018 – 2021 | — | Dissolved |
| BrightHR Oy CVR 3200196-4 | BoardBoard of Directors | 2021 – 2026 | — | Active |
| Lakkasuo Wind Farm Oy CVR 3322708-4 | BoardBoard of Directors | 2024 – 2025 | — | Active |
