Keystone Engineering of Mandeville has been awarded a contract to design the meteorological tower foundation for a wind farm planned off Maryland’s coast.

The project, led by US Wind, will be able to generate 500 megawatts of power from about 15 miles off the coast. That’s enough electricity for about 300,000 homes.

The award is Keystone’s fifth contract for fixed-bottom foundation design work on projects tied to the U.S. offshore wind market.

In 2014, the U.S. Department of Energy announced plans to provide up to $47 million apiece to three wind projects that sought to build farms off the coasts of New Jersey, Oregon and Virginia. Keystone’s “twisted jacket” design, which it uses for oil and gas platforms, will be used on two of the projects, though the projects have largely been stalled by legal and financial hurdles.

Keystone, which has more than 300 employees, also designed foundations for the nation’s first offshore wind farm, which is being built about 3 miles off Rhode Island’s coast.