Executive Summary
India’s energy transition entered a new phase in Q1 2026. The challenge is no longer limited to adding renewable capacity—it is ensuring that clean electricity can reach consumers when and where it is generated. India reportedly lost nearly 470 GWh of renewable electricity during January–March 2026, with approximately 300 GWh linked directly to transmission constraints. This development comes at a time when renewable additions have accelerated sharply, electricity demand continues to increase and energy markets remain sensitive to geopolitical volatility and imported fuel exposure. This explainer evaluates why renewable energy is being curtailed, where bottlenecks are emerging and which infrastructure interventions could unlock the next phase of growth.
Key Takeaways
- Renewable capacity additions accelerated substantially in FY2025–26.
- Transmission expansion has improved but remains uneven relative to renewable deployment.
- Growing demand and regional congestion are increasing renewable curtailment risk.
- BESS deployment is emerging as a commercial and grid-reliability opportunity.
Why is India losing renewable energy despite record renewable additions?
India's RE Installed Capacity Trend
India’s renewable expansion story remains strong, but the supporting grid is struggling to scale at the same pace. Renewable capacity additions increased from nearly 28.7 GW in FY2024–25 to more than 50.9 GW in FY2025–26, while total installed renewable capacity exceeded 274 GW by March 2026. However, renewable generation is increasingly concentrated in resource-rich regions that depend on transmission evacuation infrastructure. The result is that generation capacity exists but delivery capability does not always exist at the same moment.
This shows that capacity growth is significantly outpacing supporting infrastructure readiness. This imbalance is beginning to convert technical congestion into measurable economic losses through curtailment. In the current global energy environment—characterised by fuel price uncertainty and pressure to decarbonise—losing available renewable electricity creates avoidable cost exposure and reduces system efficiency.
Is rising electricity demand exposing hidden grid bottlenecks?
India’s power demand continues to move upward as industrial activity, electrification and cooling loads expand. Peak demand crossed 238 GW in March 2026 and the system broadly met national requirements. Yet aggregate adequacy does not necessarily mean renewable integration adequacy.
It indicates that while national supply remains resilient, local transmission constraints can still prevent renewable electricity from reaching demand centres. As India prepares for higher electricity consumption from manufacturing, mobility and data infrastructure expansion, demand growth will increasingly require flexible and geographically coordinated transmission planning rather than generation expansion alone.
Why is transmission infrastructure not matching renewable growth?
Transmission additions increased in FY2025–26 and transformation capacity expanded materially; however, transmission development cycles remain slower than renewable deployment timelines. Renewable projects can be commissioned within months, whereas transmission corridors often require multi-year approvals and execution.
Network expansion is progressing but remains insufficient relative to the scale and speed of renewable additions. This mismatch is becoming strategically important because delayed evacuation can reduce project utilisation, weaken investor returns and increase balancing costs across the electricity system.
Can battery storage become both a solution and a new market opportunity?
The renewable curtailment observed during Q1 2026 highlights that storage is moving from optional infrastructure to operational necessity. Around 300 GWh of curtailed renewable output was associated with transmission bottlenecks, concentrated largely in northern and western regions.
Relatively modest short-duration BESS deployment could absorb a meaningful portion of lost renewable output. Beyond grid stability, storage also creates a commercial opportunity through capacity markets, transmission deferral and peak management. With global battery economics improving and India seeking lower delivered power costs, BESS may become one of the fastest pathways for reducing renewable losses while improving system flexibility.
Conclusion
India’s renewable curtailment in Q1 2026 reflects the growing complexity of energy transition rather than a shortage of clean energy investment. The next phase of growth will depend on synchronising renewable additions with transmission corridors, storage deployment and market mechanisms that reward flexibility. If implemented effectively, these interventions can convert today’s curtailed electricity into usable energy, improve asset utilisation and strengthen India’s long-term energy security.
