The Big Horn Wind Farm has a 200 megawatt generating capacity and uses 133 GE Energy 1.5 MW wind turbines. This wind power plant is owned by Big Horn LLC, a subsidiary of Iberdrola Renewables.It is located in Klickitat County, Washington and 98 percent of the land it is on remains available for traditional uses, such as hunting and farming.

The electricity from Big Horn Wind Farm is sold to M-S-R Public Power Agency. M-S-R is a California joint powers authority organized in 1980 by the Modesto Irrigation District, Silicon Valley Power (Santa Clara) and the City of Redding. Its mission is to acquire electric generation and transmission resources for the electric systems of its members.

PPM Energy now has more than 2,000 megawatts of wind energy in operation or under construction. PPM Energy is a part of the IBERDROLA group of companies, a leading provider of wind power.