Blue Sky Green Field wind farm is a wind farm in Fond du Lac County, Wisconsin. The farm is located between near Mount Calvary (in the town of Marshfield) in the south with its north edge at the Calumet County border in the town of Calumet. The farm is owned by WE Energies. It is the largest operating wind farm in Wisconsin.
Construction on the farm began in June 2007 by Alliant Wind Connect at a cost of $300 million. Testing began in 2008, and the farm was placed in service on May 19 2008
The wind farm consists of 88 Vestas
Wind Systems V82 turbines
which have a capacity to produce 145 megawatts of power. They are expected to generate 328 million kilowatt hours annually, which is enough to power 36,000 homes. Each turbine is capable of production 1.65 megawatts of electricity. The turbines are approximately tall, and reach tall when the blade is faced upwards.