Stock photography, photos: Windmill Power - California, USA Stock photos of The largest of these windmills stands 150 feet tall with blades half the legend of a football field. The compartments at the top containing the generator, hub and gearbox weigh 15 to 23 tons. A wind turbine's cost can range upwards to $300,000 and can produce 300 kilowatts an hour - the amount of electricity used by a typical household in a month. Almost all of the currently installed wind electric generation capacity is in California. This wind farm on the San Gorgonio Mountain Pass in the San Bernadino Mountains contains more than 4000 separate windmills and provides enough electricity to power Palm Springs and the Coachella Valley. Photograph: © Robert Burch Click for a larger image and more information Keywords associated with this stock photo: energy, power, electric, electricity, windmills, palm springs, California, ca, usa, san bernadino mountaions, san bernadino, megatowers. Coachella valley, wind power, wind