According to Worldwatch Institute, in 2009 7.3 MW of new solar PV capacity was installed, a 20% increase form 2008 resulting in global PV capacity passing the 21 GW mark. In 2009 around 127 MW of concentrating solar thermal electric power plants came online. Europe has contributed the most significantly to PV demand, installing 72% of the 7.3 MW installed last year. According to the International Energy Agency this growth is set to continue and solar energy could account for 20-25% of global electricity production by 2050. By implementing the correct technologies and strategies, both PV and CSP could generate 9,000 TWh of electricity in 2050.
Posts Tagged ‘ pv energy ’
What is Solar energy?
Tuesday, August 25th, 2009Solar energy is the energy of sun light. The temperature of the Sun’s surface reaches to a value of approximately 5,762 K. The Earth’s perimeter of 40,000km results in an intersected sun power of 174,000 TW. Attenuation by the atmosphere results in a peak intensity at sea level of around 1 kW/m2, giving a 24 hour annual average of 0.2 kW/m2 and a 24 hour annual average power of 102,000 TW. This commands the environment and maintains the life support system of the Earth’s ecosystem and all forms of renewable energy with the exception of geothermal energy. The solar energy reaching the earth’s surface surpasses 10,000 times the current global energy demand.
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