Explanation:

=> The Tehri Pumped Storage Plant (PSP) is a hydroelectric power plant located in Uttarakhand, India.

=> It is one of the largest pumped storage power plants in the country, with an installed capacity of 1,000 MW.

=> The plant is situated on the Bhagirathi River (tributary of river Ganges) and is capable of storing 5.7 TWh of electricity.

=> The PSP is a vital component of the national grid, providing supplementary power to the country during peak hours.

=> It is designed for storing surplus water of river Bhagirathi during monsoon and releasing the stored water to fulfil the irrigation and drinking water needs of the population in the Gangetic plains of Uttarakhand.

=> And Uttar Pradesh during non-monsoon period while generating 2400 MW of peaking power.