The developer finalised turbine agreements with Vestas for both projects in recent weeks, with the Danish turbine supplier to deliver 175 of its V100-2.0MW machines.
Upon completion, both projects will be transferred to Northern States Power Company, a subsidiary of Minneapolis-based Xcel Energy, which will own and operate them.
Colorado-based RES Americas, part of the UK's RES Group, acquired Border Winds from the developer Sequoia Energy in August 2013.