The first offshore wind turbine in federal waters was installed off New England last week, as LIPA and New York State launch a decadeslong transition from fossil-fuel power plants to new green energy.

For the first time in the United States, turbines are sending electricity to the grid from the sites of two large offshore wind farms. The joint owners of the Vineyard Wind project, Avangrid and ...

Giant offshore wind turbine monopiles arriving from Europe last month at the Portsmouth, Va., marine terminal for construction starting next year of Dominion Energy's 2.6-GW project 27 miles off ...