When traveling states comprising the Great Plains, it's beyond staggering how many have been installed, or guess what percentage is subsidized. Aside providing ample work to who makes them, who transports materials in and product out, builders of the capital manufacturing equipment, crane - concrete - millwright crews, those records aren't too hard digging up.
Try finding info on the output/ offset of hydro, coal, gas or nuclear generated power, or who tops that heap of cash.