Variable speed pumped storage commissioned at Indian hydro complex

GE Vernova has commissioned the first of four 250MW variable speed units at THDC India Limited’s Tehri Pumped Storage Hydropower Plant, part of the Tehri Hydropower Complex.

With this 1GW expansion, the complex will reach 2.4GW of generating capacity and become India’s largest hydropower complex, states GE Vernova in a release.

The project’s reservoir will also help provide support with irrigation and drinking water during non-monsoon periods to the state of Uttarakhand, where it is located.

For this project, GE Vernova will integrate four doubly fed induction motor generators and the associated pump turbines with the power electronics and control systems.

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“With this project, Tehri will become India’s first power plant to use variable speed pumped storage technology and the country’s most modern hydropower station. With fast transition between the turbine and pump operation, the four new units are expected to enable power control, leading to significantly improved grid flexibility. These are all crucial capabilities as more renewables are integrated into the country’s energy mix,” said Frederic Ribieras, CEO of GE Vernova’s hydropower business.

According to the International Hydropower Association, numerous states in India have made project development announcements in 2023 and ~10% of hydropower potential is under construction. Many large-scale projects were announced in 2023–24 or reached an MOU stage including 2GW in Odisha, 7.35GW in Maharashtra, 11.2GW potential in Madhya Pradesh and 13GW in Arunachal Pradesh.

GE Vernova has five technology and engineering centres in India focused on advancing research, development and innovation in new technologies and solutions. Additionally, the company operates 11 manufacturing sites that are undertaking local production and generating employment.