Electricity service provider Rocky Mountain Power is planning to construct a number of new windpower projects across Wyoming, US, by 2020.

Based in Salt Lake City, Rocky Mountain Power is a subsidiary of Oregon’s electric power company PacifiCorp.

The projects are expected to increase Rocky Mountain Power’s owned and contracted windpower capacity by more than 60%. The farms are expected to generate enough renewable energy to power nearly 450,000 homes in the region.

“The new wind projects are part of the company’s Energy Vision 2020 initiative, which will significantly expand the company’s Wyoming wind fleet and benefit the state and local economies.”

The first project involves a 400MW farm in Converse County, which will be built by NextEra Energy Resource. Nextra has also signed a power purchase agreement (PPA).

The second project will include a 161MW capacity farm built by Invenergy in Uinta County. It will be owned and operated by PacifiCorp, which will also be responsible for building and operating 250MW and 500MW wind projects in Carbon County, as well as a 500MW wind project in Albany, Wyoming.

The new projects will be built with an estimated cost of approximately $1.5bn and are expected to create nearly 1,600 construction jobs in the area.

Rocky Mountain Power president and CEO Cindy Crane said: “The new wind projects are part of the company’s Energy Vision 2020 initiative, which will significantly expand the company’s Wyoming wind fleet and benefit the state and local economies.

“The project also includes a 140-mile segment of the Gateway West high-voltage transmission line in Wyoming to connect the new wind energy to Rocky Mountain Power’s grid.”

Construction works are expected to begin next year.