Shell and EDPR pushed the price of US offshore wind power further down when their Mayflower Wind project off Massachusetts came in at $58.47/MWh, state officials said.

The price of power and renewable energy credits from the 804MW project, levelised over 20 years and in real 2019 dollars, means Mayflower will sell its power cheaper than the $65/MWh (in 2017 dollars) agreed for output from the Vineyard Wind project in 2018.