The Blue Sky Green Field Wind Energy Center, located in the towns of Calumet and Marshfield in northeast Fond du Lac County, is designed to generate 145 megawatts (MW) of electricity, and is capable of powering approximately 36,000 average residential homes. The site consists of 88 wind turbines.
Construction of the project began in June 2007. The project was built largely with the talents and products of Wisconsin companies and skilled labor. Collectively, more than 400,000 labor hours were invested in completing the project.
On May 19, 2008, Blue Sky Green Field was placed into commercial operation. The turbines will generate more than 328 million emission-free kilowatt-hours annually.
Turbine Equipment
We Energies purchased 88 wind turbines from Vestas Wind Systems. Each Vestas V82 turbine is capable of producing 1.65 MW of electricity. News release
| Model | V82 |
| Electric Capacity | 1.65 MW |
| Hub Height | 262 ft |
| Blade Length | 134 ft |
| Tip Height | 397 ft |
| Operational RPMs | 14.4 |
| Cut in wind speed (mph) | 8 |
| Rated wind speed (mph) | 30 |
| Cut out wind speed (mph) | 54 |
| Weight of rotor (tons) | ~47 |
| Weight of nacelle w/o rotor (tons) | ~57 |
| Weight of tower (tons) | ~140 |
Regulatory Approvals
On Feb. 1, 2007, the Public Service Commission of Wisconsin issued the Certificate of Public Convenience and Necessity (CPCN) authorizing the project.
PSCW press release following approval.
CPCN issued on Feb. 1, 2007.
CPCN application filed with the PSCW on March 17, 2006, for authorization to construct the project.
