| IWP Partners Oyj CVR 2402403-1 | ManagementChief Executive Officer | 2016 – 2020 | — | Active |
| Ilmatar Hartola Oy CVR 2442136-0 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Ilmatar Ii Oy CVR 2442138-7 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Ilmatar Somero Oy CVR 2442140-8 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Ilmatar Loviisa Oy CVR 2465884-3 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Ilmatar Kurikka Oy CVR 2539875-6 | BoardBoard of Directors | 2020 – 2021 | — | Active |
| Ilmatar Alajärvi-Louhukangas Oy CVR 2581497-5 | BoardBoard of Directors | 2021 – 2023 | — | Active |
| Ilmatar Alajärvi-Möksy Oy CVR 2581498-3 | BoardBoard of Directors | 2021 – 2023 | — | Active |
| Ilmatar Kotka Oy CVR 2581505-4 | OtherDeputy Member | 2018 – 2020 | — | Active |
| Himangan Sähkö ja Automaatio Oy CVR 2587740-7 | OtherDeputy Member | 2019 – 2020 | — | Dissolved |
| Punkalaitumen Tuulivoima Oy CVR 2653323-5 | OtherConfidential Clerk | 2019 – 2020 | — | Active |
| Pahkakosken Energia Oy CVR 2735396-5 | BoardBoard of Directors | 2022 – 2023 | — | Active |
| Leppävirta Tuulipuisto Oy CVR 2793068-9 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Infratiera Oy CVR 2886769-3 | OtherDeputy Member | 2018 – 2020 | — | Active |
| Ilmatar Energy HoldCo Oy CVR 2918733-1 | OtherPerson with significant control | 2018 – 2024 | — | Active |
| Ilmatar Lylyharju Oy CVR 2920643-2 | BoardBoard of Directors | 2018 – 2021 | — | Active |
| Piiparinmäki Oy CVR 2920647-5 | BoardBoard of Directors | 2018 – 2019 | — | Active |
| Ilmatar Humppila-Urjala Oy CVR 2981074-4 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Ilmatar Solar Development Oy CVR 2981080-8 | BoardBoard of Directors | 2019 – 2021 | — | Active |
| Perhon Tuuli Oy CVR 3320762-2 | BoardChairperson | 2022 – 2024 | — | Active |
