As summer temperatures soared across India and air conditioners, coolers and fans kicked into overdrive, the country's electricity grid faced its toughest test yet. It passed with flying colours. On April 25, at exactly 3:38 pm, India recorded its highest-ever peak power demand of 256.1 gigawatt (GW). Yet, there was no shortage, no grid stress, and no disruption. Even more remarkably, India continued exporting electricity to neighbouring countries while meeting this unprecedented domestic demand.This was not just a victory for conventional power plants. Solar energy played a starring role.According to GRID India, the national grid operator under the Ministry of Power, solar power supplied 57 GW at the moment of peak demand, accounting for more than
one-fifth of the country's electricity needs. Earlier in the day, at 12:30 pm, solar generation from utility-scale projects and rooftop systems had surged to around 81 GW, contributing nearly one-third of India's total electricity generation of 242 GW.India's previous peak demand record stood at 250 GW, set on May 30, 2024.
Solar Steps Up As Heat Pushes Demand Higher
Electricity demand in India usually peaks in May or June, but this year, the heat arrived early.The country witnessed a sharp jump in consumption in April itself, the earliest such annual peak since 2022-23. Peak demand rose from 235 GW in April last year to around 256 GW this month.The Ministry of Power said electricity consumption grew 8.9 per cent between April 1 and April 27 compared to the same period last year, as scorching temperatures drove up the use of cooling appliances across homes and businesses.The ministry expects peak demand to touch 271 GW later this year."Renewable energy, particularly solar, made a significant contribution, complemented by hydro and other flexible resources during peak conditions," the power ministry said.While thermal power still contributed about 66 per cent of total supply, solar's share climbed to around 21 per cent during peak hours, underscoring its growing importance in India's energy mix.
From Backup To Backbone
India's solar revolution has gathered remarkable pace.According to the Ministry of New and Renewable Energy, the country had installed 150.26 GW of solar capacity as of March 31, 2026. Solar generation touched 173.52 billion units in FY26, making it the single largest renewable energy source in the country.Overall, non-fossil fuel sources now account for more than half of India's installed power capacity.Prime Minister Narendra Modi recently highlighted the strategic importance of renewables. In his 133rd Mann Ki Baat address, he described solar and wind energy as central to India's future.The growth has been powered by government schemes such as PM Surya Ghar Muft Bijli Yojana, which aims to install rooftop solar systems in one crore households. Nearly 24 lakh households had already adopted rooftop solar by December 2025.Meanwhile, the PM-KUSUM scheme has helped more than 21.77 lakh farmers solarise agricultural operations as of March 2026.The government's Rs 24,000 crore Production-Linked Incentive scheme for solar modules is also boosting domestic manufacturing under the Atmanirbhar Bharat initiative.India's latest power milestone shows that solar is no longer merely supporting the grid. It is becoming one of its strongest pillars.A decade ago, meeting such a massive surge in electricity demand would have depended almost entirely on coal. Today, the Sun is doing a substantial part of the heavy lifting.
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