Clearway Energy Group LLC is planning to build a wind farm in Mineral and Grant counties, W.Va., with a generation capacity of up to 170 MW.

The proposed Black Rock wind farm is estimated to cost about $150 million. The company has already submitted a siting certificate application with the West Virginia Public Service Commission.

Once approved, construction of the project is expected to start in 2020, with a target commercial operation date in 2021. It will be located adjacent to Clearway's Pinnacle Wind Farm, which has been operating since 2011 and sells its output to Maryland government agencies and universities.

The project, announced May 16, was praised by West Virginia Gov. Jim Justice. "My administration is committed to finding every possible way to enhance energy production in West Virginia, and the Black Rock Wind Farm is the perfect example of a project that will be a win-win in many ways," the governor said in a news release.

Clearway Energy Group owns a controlling interest in publicly traded Clearway Energy Inc. and is itself owned by investment firm Global Infrastructure Partners.