The Indiana Municipal Power Agency said it has agreed to buy up to 50 megawatts a year from Crystal Lake Wind Energy Center in Hancock County, Iowa.
That's enough to power 15,000 homes and cut carbon dioxide emissions 150,000 tons a year, said the Carmel-based wholesale power provider to 50 cities and towns.
IMPA said it could receive the wind power as early as this month from the complex, which eventually is to have 180 wind turbines and capacity to generate up to 350 megawatts.
IMPA, which serves more than 300,000 electric customers, also obtains electricity from plants fueled by coal, natural gas and nuclear power.
The Crystal Lake wind farm in Iowa is operated by a unit of FPL Group, which also owns Florida Power & Light.
In Indiana, wind farms in Benton County and other windy areas of northern Indiana are supplying supplemental electricity to Duke Energy and to Indianapolis Power & Light.