Alliant Energy’s subsidiary Interstate Power and Light Company (IPL) is planning to construct the 170MW English Farms wind farm in the US state of Iowa.

The wind farm, which is located in Poweshiek County in central Iowa, will be acquired by Alliant Energy from its developer Tradewind Energy.

Alliant will build and own the wind farm, whose construction is expected to begin next year.

The 170MW English Farms wind farm will include 69 wind turbines. The average energy generated from the wind farm would be enough to be supplied to about 50,000 Iowan homes per year. In the next 30 years, the wind farm is expected to result in $47m local tax benefits and $12m payments to the landowners.

Alliant Energy's Iowa energy company president Doug Kopp said "Wind energy is a win for Iowans.

"The benefits of this project help customers through reductions in emissions and fuel cost. It gives landowners lease payments to help on the farm and it helps communities through increased local tax revenue for schools and community services."

The company received approval to build 500MW of wind energy in Iowa last year. The company has proposed a similar wind expansion to the Iowa Utilities Board again in this year. Alliant claims that through these projects, customers can get more than one-third of their energy needs from wind by the end of 2020.

Overall, Alliant's wind projects, which represent $1.8bn investment, are expected to add up to 1GW of new wind generation in Iowa.  

Tradewind Energy senior development manager Jeff Hammond said: “It has been extremely rewarding to work with Poweshiek County officials, landowners and community members.

“We are very proud to partner with Alliant Energy, which is contributing to the transformation of Iowa's electric power supply.”