A 150 megawatt solar power plant owned by the Kramer Junction Company. This facility is known as "SEGS 3 through 7", and is one of three separate sites within 40 miles of one another which make up a total of nine solar fields in the Solar Electric Generating System (SEGS). Together these three facilities can generate about 354 megawatts at peak output. Until around 2005, this comprised most of the commercial solar power currently produced worldwide. These solar facilities are referred to as "advantageous peak facilities," as they operate at their peak when it is sunniest, which is also when local power requirements are greatest, due to increased air conditioning demand. The facilities regulate their power supply through the use of supplemental natural gas-fueled electric generating plants. With a peak output of 45 megawatts, SEGS 1 and 2 are at the Dagget Leasing Company's facility just east of Barstow, and Harpers Dry Lake, north of Hinkley is the location of the most powerful of the three facilities, the SEGS 8 and 9, which produce around 160 megawatts at their peak.
Kramer Junction Solar Electric Generating Station