Alliant Energy’s Iowa utility is advancing with plans for the 500MW New Wind Project.
Construction of the project is expected to begin next year and Alliant Energy anticipates placing 250MW in service in 2019 and the rest in 2020.
The American energy company is working with landowners in Franklin County near its existing Whispering Willow windfarm and is also exploring opportunities to develop other areas of the state.
Alliant Energy's Iowa utility president Doug Kopp said: "The New Wind Project will benefit our customers, our communities and the state.
"The wind turbines will generate clean, cost-effective energy for customers. They also create tax revenue for communities, and bring construction jobs and economic growth to the state, making this a win-win project."
Earlier this month, the Iowa Utilities Board issued a final order regarding the project, approving the settlement filed between Alliant Energy and customer groups on 12 October with limited modifications.
Alliant Energy expects that the wind project will help the company efficiently meet its customers' energy needs by maximising the value of renewable energy tax credits and taking advantage of favourable wind turbine pricing.
Kopp further added: "We want to thank our community partners in Franklin County. We also want to thank the Iowa Utilities Board for its work and the organisations that came together to advance this application toward approval.
“They include the Office of Consumer Advocate, the Iowa Business Energy Coalition, the Large Energy Group, the Iowa Environmental Council and the Environmental Law and Policy Center.
"Through our work together, we are helping to advance clean energy while providing low-cost, reliable energy solutions to our customers."