HANK MORGAN / SCIENCE PHOTO LIBRARY HANK MORGAN / SCIENCE PHOTO LIBRARY
Solar power. View of one of the three Luz International solar energy complexes in the Mojave Desert of California, USA. Together these sites, which cover 1000 acres, generate 275 megawatts of electricity. This accounts for 90% of the world's total grid-connected solar energy production. The installation, located at Kramer Junction in southern California, has an array of 650,000 computer-controlled parabolic mirrors which track the sun across the sky. They focus the sun's light onto tubes containing a synthetic oil. The oil which becomes super-heated to 391 degrees Celsius, is used to boil water for steam turbine generators in one of five power plants.
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