State-owned THDC India announced the synchronisation of the first 250 MW unit of its 1,000 MW pumped storage plant (PSP) at Tehri in Uttarakhand. The unit has been synchronised in pump condenser mode, where the turbine functions both to generate electricity and as a condenser or heat exchanger. THDC is developing the 1,000 MW PSP at Tehri through four units of 250 MW each. Synchronisation of the first unit took place on April 23, 2025. Once the pumped storage project is fully operational, the Tehri hydro power complex will have a total installed capacity of 2,400 MW. THDC currently operates the 1,000 MW Tehri hydro power project and the 400 MW Koteshwar hydroelectric project. Headquartered in Rishikesh, Uttarakhand, THDC India is a joint venture between NTPC (which holds a 75% stake) and the government of Uttar Pradesh (holding 25%). (Business Standard)