Located in the Andalusian countryside of Southern Spain, near Seville, is a giant 115 meter high concrete tower surrounded by a field of 624 huge mirrors. These mirrors collect the sunlight and focus it at the top of the concrete tower, where it heats water passing through pipes converting it into steam. This steam drives a series of turbines that produce electricity. Simple, efficient, environment friendly and spectacular !
The Green Mountain Dairy farm in Sheldon, Vt., like all dairy farms, is in the business of producing milk. But the farm is also part of a growing alternative energy program that converts the methane gas from cow manure into electricity.