TNPSC Thervupettagam

Decreasing Solar Radiation Availability

May 2 , 2024 208 days 432 0
  • The quantity of solar radiation available that can be economically converted by the solar panels to electricity is showing an “alarming decreasing trend” in several locations in India.
  • Global solar radiation showed a generally decreasing trend from 1981-2006.
  • 1971-2000 showed greater dimming compared to 1981-2006.
  • However, on the whole, there was a reversal in trends after 2001 with the exact causes unclear.
  • While increased aerosol load and clouding are said to be causative factors, installing more efficient solar panels could help counter this.
  • Aerosols absorb the sunlight and deflect it away from the ground and they can also precipitate the formation of dense clouds, that again block sunlight.
  • The efficiency of solar panels is significantly influenced by the amount of sunlight incident on them.
  • India’s largest solar parks are located in the north-west, particularly Gujarat and Rajasthan.
  • India’s installed solar power capacity is about 81 GW (1 GW is 1,000 megawatt), or roughly 17% of the total installed electricity.

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