Gas-Based Power Plants Play Key Role in Stabilizing India's Grid Amid Peak Heatwave Demand

India's gas-based power plants played an important role in providing grid stability during the peak electricity demand season in April and May 2026. According to data from the International Gas Union (IGU), severe heatwaves pushed up cooling requirements across the country, leading to record-high electricity consumption.

As of July 2026, India maintains a total capacity of 20 gigawatts (GW) of gas-based power plants. In May 2026, peak power demand reached a record 270.82 GW as extreme temperatures increased cooling needs nationwide.

During April and May, natural gas-based power plants increased their natural gas purchases on the Indian Gas Exchange (IGX) by approximately 340 per cent year-on-year. Purchases reached 124.3 million cubic meters (mcm) to sustain power generation while demand remained elevated.

The IGU noted that while solar power helped meet daytime electricity demand, natural gas-based plants offered flexible supply and supported grid stability during high-demand evening and night hours when solar generation was unavailable. This demonstrated how natural gas can provide short-term flexibility when extreme heat drives electricity consumption above normal levels.

The industry body highlighted that rising cooling needs during periods of extreme heat increase the demand for reliable and dispatchable power, particularly in situations where grid capacity, renewable output, or storage availability are constrained. Natural gas supports system flexibility by supplying capacity during periods of high demand, supply disruptions, or lower renewable generation.

Electricity demand growth in India is driven by several factors, including cooling requirements, industrial activity, agriculture, and broader economic growth. However, hotter seasonal conditions add further pressure by increasing cooling needs. Monthly peak demand rose above historical ranges during the 2026 hot season, remaining above the 2020-2024 range in the first five months of the year, with daytime peak demand reaching a record 270 GW during May and July.

The IGU pointed out that rising maximum daily temperatures coincide with increasing air-conditioning ownership, which is supported by income growth, urbanization, and improving living standards. Peak demand during cooling seasons has become increasingly sensitive to temperature as air-conditioner stock grows. In India, each 1°C increase in outdoor temperature was associated with more than 7 GW of additional peak demand in 2024, up from around 4 GW in 2019.

These trends highlight a wider risk for fast-growing Asian markets, where expanding cooling access can turn short periods of extreme heat into system-wide demand spikes. This presents a long-term capacity planning challenge for power systems as the gap between average electricity demand and peak demand widens. The IGU added that these risks could become more pronounced if El Niño conditions develop as expected.

"The recent reliance on gas-based power plants highlights a critical operational lesson for infrastructure and energy sectors: peak demand driven by climate shifts requires flexible, dispatchable power assets. For businesses and grid operators alike, long-term planning must account for the growing gap between average and peak energy consumption. As urbanisation and rising living standards increase the adoption of cooling appliances, energy reliability during evening and night hours will remain a vital economic variable." — Dr. Shishir Gupta, Founder & CEO, StartupLanes