The 180 MW Tatanka Wind Farm, is located in Dickey County and McIntosh County, North Dakota, and McPherson County, South Dakota. It is the largest wind farm in North and South Dakota and generates enough renewable energy to power more than 60,000 U.S. homes.

Tatanka Wind Farm is the first installation of Acciona's 1.5 MW wind turbines in the United States. Construction of the $381 million project began in April 2007. The plant went online on July 25, 2008.

Tatanka Wind Farm is the largest renewable-energy project in North and South Dakota, sitting on approximately 14,080 acres. This landmark wind farm will generate enough clean energy to power more than 60,000 U.S. homes. With the exception of the small footprint made by the 120 turbines, at about 1 acre each, the land use is dominated by cattle grazing and crop cultivation, as it has been for decades and generations.

Tatanka represents the first installation of ACCIONA’s 1.5 MW turbines in the U.S. There are 120 wind turbines spread over the wind farm, with 59 turbines located in South Dakota and 61 turbines in North Dakota. The electricity generated is sold into the Midwest Independent Transmission System Operator (MITSO), which delivers electric power to a very large region of the upper midwestern U.S. and Canada.