A regional economic development corporation in Ohio seeks to install the first freshwater offshore wind turbines in the U.S., in the Great Lakes. Cleveland-based Lake Erie Energy Development Corp. (LEEDCo) announced May 24 a long-term partnership agreement with General Electric Co. to supply turbines for LEEDCo’s first 20-MW wind farm in Lake Erie near Cleveland, set to operate in 2012. A 1,000-MW wind farm in the lake is planned for about 2020. LEEDCo has received three responses to a request for proposals for a developer. It expects to announce that partner this month, says Treasurer Richard Stuebi.