Mainstream Renewable Power is a leading pure-play renewable energy company, with wind and solar assets across key markets South Africa and Chile.

We are one of the most successful developers of gigawatt-scale renewables platforms across onshore wind and solar power generation. The company has successfully delivered 6.6 GW of wind and solar generation assets to financial close-ready and has a net global pipeline of 13 GW.

In 2021, Aker Horizons acquired a majority stake in Mainstream, and in 2022, Mitsui & Co., Ltd. joined Aker Horizons as a long-term strategic investor. In September 2025, Aker Horizons’ ownership stake in Mainstream was transferred to Aker Capital AS, a subsidiary of Aker ASA, as part of a group restructuring.

We have raised more than EUR 3.0 billion in project finance to date, and we have 150+ colleagues across three continents.