| Planned | Project developerHiyama - Cosmo | Development | Hiyama - Cosmo |
| Planned | Offshore wind developerIshikari Bay Cosmo Eco Power | Project Company And Development | Ishikari Bay Cosmo Eco Power |
| In Operation | Project-company shareholderNoshiro Port | Finance Insurance Legal | Corporate shareholding in Akita Offshore Wind Corporation, covering Akita Port and Noshiro Port |
| Planned | Project proponentShimamaki - Cosmo Eco Power | Development | Cosmo Eco Power Shimamaki offshore wind proposal |
| Planned | Owner Developer · 100%Hiyama - Cosmo | Ownership | Ownership relationship |
| Planned | Owner Developer · 100%Ishikari Bay Cosmo Eco Power | Ownership | Ownership relationship |
| In Operation | OperatorAizu-Wakamatsu wind farm - 1 | Onshore wind | Aizu-Wakamatsu wind farm |
| In Operation | OperatorChoshi (Cosmo Eco Power) wind farm | Onshore wind | Choshi (Cosmo Eco Power) wind farm |
| In Operation | OperatorHimekami wind farm | Onshore wind | Himekami wind farm |
| In Operation | OperatorHirokawa・Hidakagawa wind farm | Onshore wind | Hirokawa・Hidakagawa wind farm |
| In Operation | OperatorIkata wind farm - 2 | Onshore wind | Ikata wind farm |
| In Operation | OperatorIwata wind farm | Onshore wind | Iwata wind farm |
| In Operation | OperatorIwaya (Cosmo) wind farm - 1 | Onshore wind | Iwaya (Cosmo) wind farm |
| In Operation | OperatorMutsu Ogawara wind farm | Onshore wind | Mutsu Ogawara wind farm |
| In Operation | OperatorWatarai wind farm - 1 | Onshore wind | Watarai wind farm |
| In Operation | OperatorWatarai wind farm - 2 | Onshore wind | Watarai wind farm |