A lease auction

of about 390,000 acres off the coast of Massachusetts to develop wind energy brought in a record $405 million in winning bids.

Boston — A lease auction of about 390,000 acres off the coast of Massachusetts for the development of offshore wind energy has drawn a record $405 million in winning bids.

If fully developed, the three parcels could generate about 4.1 gigawatts of energy — enough to power nearly 1.5 million homes.

Interior Secretary Ryan Zinke said Friday the auction was the nation’s eighth competitive lease sale for the development of offshore wind. He said it smashed the previous highest grossing offshore wind lease sale record of $42 million for an area off New York in 2016.

The provisional winners of the auction were Equinor Wind US, Mayflower Wind Energy and Vineyard Wind. They bid $135 million each for three similarly sized parcels of approximately 130,000 acres.

The areas are located about 20 miles from Martha’s Vineyard and 44 miles from Block Island.

Before the lease is finalized, the Department of Justice and Federal Trade Commission must conduct an anti-competitiveness review of the auction. The provisional winners will be required to pay the winning bid and provide financial assurance to BOEM.

Zinke said the auction demonstrates that the Trump administration isn’t focused solely on fossil fuels.

“To anyone who doubted that our ambitious vision for energy dominance would not include renewables, today we put that rumor to rest,” Zinke said in a written statement following the auction, which was conducted by the federal Bureau of Ocean Energy Management.

Christer af Geijerstam, President of Equinor Wind US, said the lease is the company’s second offshore wind lease in the United States.

“This acquisition complements our existing position on the U.S. East Coast and gives us a foothold to engage in the Massachusetts and wider New England market, a region notable for its strong commitment to offshore wind,” Geijerstam said in written statement.

In December 2016, Equinor won a federal lease auction of 80,000 acres south of New York and east of New Jersey. The company is developing projects in that area for both states; Empire Wind in New York and Boardwalk Wind in New Jersey.

Vineyard Wind issued a statement Friday saying the company is excited about expanding its offshore wind presence in New England and will work with federal officials — and the fishing industry, environmentalists, wildlife experts, and local communities — as the project moves forward.

The newest leases will initially last for one year, during which each company must describe the meteorological towers or buoys they plan to use to assess the wind conditions. After that, the firms have another four and a half years to detail the construction and operation of the wind farms.

After completing an environmental review and winning all final approvals, the companies will have a lease of 33 years to build and operate the energy-producing wind turbines.

There are currently 15 active wind leases in federal waters that have generated more than $473 million in winning bids for nearly two million acres in federal waters according to BOEM.

Money received from offshore wind lease sales go to the United States Treasury.