Enefit Green Enefit Green AS is a publicly traded renewable energy company. AS is a publicly traded renewable energy company located in Tallinn Tallinn, the largest city and capital of Estonia (population 440 000). , Estonia. It went public on Nasdaq Tallinn Tallinn, the largest city and capital of Estonia (population 440 000). in October 2021 with 23 % of shares, the rest being owned by the state-owned energy company Eesti Energia. CEO of the company is Aavo Kärmas.