January 2024: HCC along with its consortium partner GEPIL has achieved one more prestigious milestone with the successful lowering of the Rotor (250 MW, weight: 490 Ton) in the Generator Pit of Unit # 07 (3rd unit) of 1,000 MW Tehri Pumped Storage Plant (PSP) on 8 March 2024. The rotor is the rotating assembly to which the mechanical torque of the turbine shaft is applied. By magnetizing or “exciting” the rotor, a voltage is induced in the stationary component, the stator. The principal control mechanism of the generator is the exciter-regulator which sets and stabilizes the output voltage. Earlier, the project team had successfully lowered the Butterfly valve (BFV) for Units 5 and 6 in January 2024.
Tehri PSP envisages generating 1000 MW of peaking power to enhance system reliability and provide a balancing load to the thermal and renewable generation during off-peak hours. The Tehri Dam and Koteshwar Dam reservoirs would function as upstream and downstream reservoirs for the Pump Storage Plant. This plant will contribute to stabilization in a big way by meeting the peak load and balancing requirements.