AWS has signed a 13-year power purchase agreement with developer Pattern Energy for the previously named Fowler Ridge.
The project will produce 500GWh of electricity to power AWS's Cloud data centres.
Project owner, Pattern, expects to start construction of the project in Indiana, northern US, in April. Completion is due in early 2016.
AWS, owned by the online retailer Amazon, has pledged to power its entire infrastructure using renewable energy.
Wind energy has become increasingly popular source of power for data centres.