NTPC eyes low-load thermal units

New Delhi: As renewable energy accounts for a growing share of India's power mix, state-owned NTPC Ltd has invited expressions of interest (EoIs) for developing thermal power units that can operate at loads as low as 25% and, if needed, operate in two shifts.

Thermal power stations can currently run at a technical minimum load of 55%, below which the plants experience significantly higher wear and tear. The move highlights the growing need for flexible generation to support grid stability. India's largest power generator is seeking technology providers and engineering, procurement and construction (EPC) partners for sub-critical thermal units in the 150-250 MW range that can quickly ramp up or down to balance fluctuations in solar and wind generation.

The development gains significance as the grid integrates a rising share of renewable energy, increasing variability and requiring thermal plants to run at the technical minimum level of 55%. NTPC's thermal fleet is already operating at the technical minimum load during periods of low demand, a company official said.