Harbec Plastics constructed a 250 KW wind turbine in 2002 to power their air conditioning needs. They also installed 20 30KW micro turbines to power their heating needs. They save almost $165,000 per year in heating and air conditioning costs. It’s a very impressive tower, too. 40 meters high, with a 29.5 meter rotor. I neglected to clean the back lens on my camera, sorry for the spots. Just means I have to go back up there to get more pictures.