New York Times
UPINGTON, South Africa — In one of the most sun-drenched corners of the planet, a 670-foot tower rises above a desert dotted with 4,160 mirrors. Tracking the sun throughout the day, the mirrors, called heliostats, redirect the sun’s rays into the tower, where water is heated to generate steam — and electricity.
Since the plant, Khi Solar One, began operating early this year near Upington, it has produced enough power for 65,000 homes during the day, but also, thanks to the latest technology, for a few hours after the sun sets. READ MORE