Enefit Green AS is a renewable energy company located in Tallinn, Estonia. It had gone public on Nasdaq Tallinn in October 2021 with 23 % of shares, but then reprivatized back in May–July 2025 up to complete control of the state-owned energy company Eesti Energia. CEO of the company is Aavo Kärmas. Enefit Green was established in 2016 based on the renewable energy assets of Eesti Energia. The name of Enefit Green was adopted at the end of 2017. In 2018, Enefit Green installed at the remote off-the-grid Ruhnu island an hybrid power generation system, which includes a solar farm, a wind turbine, and battery for energy storage, backed-up with a diesel generator running on biodiesel. Also in 2018, Enefit Green acquired renewable energy producer Nelja Energia which became a subsidiary of Enefit Green. Enefit Green owns four wind farms, Iru waste-to-energy plant, Paide and Valka biomass power plants, Keila-Joa hydroelectric power plant, and Ruhnu hybrid power generation. Wikipedia