Alliant Energy is seeking approval from the Iowa Utilities Board to add up to 500MW of wind energy in the US state.
The US company expects a decision on the new plan in early 2018.
In 2016, it received approval for a similar expansion and said the combined projects would represent a $1.8bn investment and add up to 1GW of new wind generation in Iowa.
Alliant Energy Iowa president Doug Kopp said: “The customers and communities we serve will benefit from this cost effective clean energy.”
Image: Alliant
