Solar Energy Generating Systems
Solar Electric Generating Systems ( SEGS ) are nine solar thermal heat power plants in California, operated by NextEra Energy Resources, a subsidiary of FPL Group, and also partially belong.
Background
The SEGS is solar thermal power plants, which gain by solar thermal technology and the use of parabolic reflector troughs current. In combination with conventional natural gas is produced in this way in the Mojave Desert stream. The nine power plants have a capacity of around 354 MW, thus forming a composite of the world's largest solar factory of its kind
The thermal receiver that absorb the sun's rays and transferred to a carrier liquid ( eg oil) were manufactured by the German company Schott Solar.
The power plants
The nine SEGS power plants were in the period from 1985 to 1991 in California's San Bernardino County of LUZ II Ltd.. (now subsidiary of BrightSource Energy ) designed, built and operated.
From 1984, SEGS I deliver with a capacity of 14 MW and a year later SEGS II in Daggett ▼ 34.863055555556 - 116.82694444444Koordinaten: 34 ° 51 ' 47 " N, 116 ° 49' 37 " W with 30 MW of electrical power for the utility Southern California Edison, a subsidiary of Edison International.
Five plants SEGS III - VII SEGS ▼ 35.014166666667-117.55888888889 emerged with a capacity of 30 Mw of between 1986 and 1988.
The near Lockhart ▼ 35.031666666667-117.34805555556 went into operation in December 1989 and November 1990 plants SEGS VIII and SEGS IX are currently (2008) the largest single solar power plants in the world.
Production
Since the theoretical performance says little about the actual production, is mainly this interesting. For the SEGS values are up 2002 It is particularly striking that the relative production is not dependent on technology progress or deterioration due to strong annual solar yield variation detectable.
Selected works and average figures:
The oldest plant ( SEGS I, 1984) has produced annually between about 20 and about 17 GWh GWh at 14 MW. These are per MW ie about 1.4 GWh / MWa and 1.2 GWh / MWa.
SEGS IIA ( 1988), produced annually at 30 MW between approximately 70 GWh and 60 GWh. These are per MW ie about 2.3 GWh / MWa and 2.0 GWh / MWa.
The latest work ( SEGS IX, 1990) has produced annually at 80 MW between 140 GWh and 120 GWh. These are per MW ie about 1.75 GWh / MWa or 1.5 GWh / MWa.
Overall, all stations ( SEGS I through IX) have produced annually from about 660 GWh and 620 GWh at about 354 MW. These are per MW ie about 1.86 GWh / MWa and 1.75 GWh / MWa.
For comparison, European works: The three Andasol plants in Spain calculate at 50 MW with 110 GWh of annual production. That converts to 2.2 GWh / MWa. However, there are of no actual production figures.