Old Windmatic A/S WM14s wind turbines at the Altamont Pass Wind Farm
east of San Francisco, California. When they ran each turbine could produce 65 kilowatts of power. That is about 5% of the power rating of the turbines just a few miles away from Elmwood Park. I can't find a date for when these turbines were manufactured and installed, but my guess would be the early 1980s. Early turbines rotated at much higher RPM than modern turbines, and as a consequence killed a lot of birds. These turbines have not run in a long time.