The U.S. finally goes big on offshore wind

Sometime in 2019, construction on Vineyard Wind, the first major offshore wind farm in the United States, will begin. Workers will start prepping a pair of undersea substations to be installed about 55 kilometers south of the Massachusetts mainland. A specially equipped trawler will lay undersea transmission cable between the site and a landfall on Cape Cod. The cable will connect to the switching station in Barnstable, and from there to the New England power grid.