Solar eclipse: India braces for 11,943 MW hit to solar power; POSOCO readies systems

Power System Operation Corporation (POSOCO) has started preparing power systems for the 21 June annular solar eclipse as it expects a reduction in solar power generation by 11,943 megawatt (MW) across India.

The solar eclipse will begin at 09:56 am IST at Dwarka, Gujarat and will end at 14:29 pm IST at Dibrugarh, Assam. This would be the fourth solar eclipse India would witness in the past decade. The last one occurred in December 2019.

“Eclipse would lead to reduction of all India solar generation by about 11,943 MW at maximum obscuration time and total estimated reduction in energy will be 20 million units compared to a normal day,” it said.

The state-run power operator is planning to manage the deviation of grid frequency from the nominal by flexing fast ramping sources such as hydro and gas-generating stations.

“During the initial period, 8,900 MW of solar generation will reduce in a very short span of time i.e 1:48 hrs and after maximum eclipse, it would increase by 10,362 MW within 2:08 hrs,” POSOCO said in a fresh report.

As on 31 March 2020, with an installed capacity of 34.6 GW, solar PV constituted 9 per cent of the total installed generation capacity of Indian grid.

ET energy World
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