Despite the vast amount of onshore renewables bid into Massachusetts’ current 83D clean-energy tender, developer Deepwater Wind believes its 'Revolution' proposal – combining 144MW of offshore wind with a large Tesla battery system – will win an off-take contract in 2018.

If Deepwater is right – if Revolution edges out onshore wind, solar and hydro for a contract – it will be a big breakthrough for the offshore wind sector in the US.