Mainstream Renewable Power has teamed up with Ocean Winds to develop a second ScotWind site of 500MW east of the Shetland Islands.

The partners announced today that they will expand their 50-50 Arven Offshore Wind Farm joint venture from its current 1.8GW to 2.3GW.

The 1.8GW Arven site was awarded in 2022. Separately, Ocean Winds – an international joint venture between Spain’s EDP Renewables and French multinational Engie – won a 500 MW site in the same NE1 block.