While the restoration work due to the landslide was in the stage of completion, the power plant met with another serious disaster.

An earthquake of 7.8 magnitude struck Nepal on 25th April 2015 (Baishak 12, 2072) at 11:56 A.M. The epicenter was located in Barpak of Gorkha District, 81 KM northwest from Kathmandu. Hundreds of thousands of households were destroyed rendering people homeless with entire villages and settlements flattened. Large-scale casualties and damages were reported from around the nation. Strong aftershocks, including a 6.6 magnitude aftershock on April 26 2015 and a 6.7 magnitude aftershock on May 16 2015, led to further damages to the weakened structures and increased the number of casualties. Sindupachowk, Kathamandu, Dolaka, Gorkha, Lamjung, Bhaktapur, Nuwakot and Rasuwa were among the most affected districts and large-scale damages were also caused to the hydropower projects located on these areas.

Subsequent aftershocks and more than 220 tremors of magnitudes greater than 4.0 have caused considerable damage to SSHP. The powerhouse, particularly the primary frame structure, was damaged due to the tremors. Additionally, some considerable damages were observed on the GRP penstock alignment due to boulder movements brought about by the quakes.

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