India restricted 8,133 GWh of solar energy in the April-June quarter as the national grid struggled to absorb excess daytime output. This highlight of infrastructure mismatch comes as rooftop solar installations under the PM Surya Ghar scheme accelerate, with over 3.9 million systems now active.
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India’s renewable energy sector is facing a growing challenge as the country’s power infrastructure struggles to keep pace with rapid solar capacity expansion. During the April to June 2026 quarter, India curtailed 8,133 gigawatt-hours (GWh) of solar power. This means that despite the energy being produced, it could not be delivered to the grid or consumed, representing a lost opportunity for power generation.
Minister of State for New & Renewable Energy, Shripad Naik, provided these figures in a formal reply to the Rajya Sabha. The data shows that the issue was most pronounced in May, when 3,235 GWh was curtailed, following 2,417 GWh in April and 2,481 GWh in June. These restrictions are primarily enforced by the Grid Controller of India to ensure grid security and stability during periods of peak generation when supply temporarily exceeds transmission capacity.
This phenomenon highlights a critical infrastructure gap. While the government has aggressively pushed for higher renewable capacity, the pace of commissioning new transmission lines has not always matched the speed of solar project installations. When the grid reaches its limit, system operators must restrict the intake of power to prevent technical failures or blackouts. For investors, this grid bottleneck is a key area to monitor, as it can impact the revenue predictability of solar power producers who rely on successfully injecting their full output into the grid.
Alongside these transmission challenges, the residential solar sector is seeing massive adoption. The PM Surya Ghar: Muft Bijli Yojana, launched in February 2024, has become a major driver of decentralised power. As of July 22, 2026, the government reported that 3.9 million rooftop solar systems have been installed, benefiting 4.8 million households. The government has already disbursed ₹27,343.90 crore in financial assistance to support this rollout.
While the rooftop solar expansion is a positive signal for demand, the high level of curtailment at the utility level serves as a reminder of the pressure on national transmission infrastructure. Going forward, the most important updates for investors will be the progress on green energy corridor projects and investments into grid-scale battery storage solutions. These developments are essential to reduce curtailment and allow the grid to efficiently absorb India’s expanding solar power capacity.