Archive · 10 Nov 2025
India's Grid Struggles to Absorb Solar Surge, Curtailment Rises
Imagine India's power grid is like a highway for electricity.
Recently, a lot more solar power (like from sunshine panels) has been trying to get on the highway, especially during the day.
But the highway is already full, and some of this new solar electricity can't get on.
This is called 'curtailment,' and it means the electricity can't reach homes and businesses.
Some days, almost half of the solar power is turned away.
This happens because other power sources, like coal plants, can't quickly slow down when there's too much solar power.
Also, when the sun goes down, we still need electricity, but the solar power isn't being made then.
This situation is making it hard for clean energy projects to grow, and some might even be canceled.
Experts say we need better ways to store this extra solar power, like giant batteries, so we can use it later when it's needed.
India's national grid is struggling to accommodate a surge in solar power installations, resulting in increased curtailment.
The solar curtailment rate reached approximately 12% in October, with some days seeing up to 40% of solar output denied grid access.
This mismatch arises because coal power plants cannot reduce output rapidly enough to balance the influx of solar energy.
Rare curtailments of wind power were also observed, highlighting the need for energy storage solutions like grid-scale batteries.
The government is considering canceling green projects that cannot secure power purchase agreements, potentially jeopardizing the goal of doubling clean power capacity.
- Who
- Grid Controller of India Ltd. and solar power generators
- What
- An increase in solar power generation being denied access to the national grid due to the grid's inability to absorb the surge, leading to higher curtailment rates.
- When
- October, with data tracking since May
- Where
- India
- Why
- A mismatch between the intermittent supply of solar power and the demand, coupled with the inflexibility of coal power plants to reduce output quickly, and the lack of sufficient energy storage solutions.
Renewable Energy Advocates
Grid Operators/Fossil Fuel Reliance
Grid Access for Renewables
Renewable Energy Advocates
Advocates push for faster integration of renewables, highlighting the need for grid upgrades and storage to absorb surplus solar and wind power.
Grid Operators/Fossil Fuel Reliance
Grid operators face challenges in balancing supply and demand due to the intermittency of renewables and the inflexibility of existing fossil fuel plants, leading to curtailments.
Energy Storage Investment
Renewable Energy Advocates
Urge for increased investment in energy storage solutions (like batteries) to manage excess renewable energy generated during peak production times and dispatch it later.
Grid Operators/Fossil Fuel Reliance
The cost and implementation of large-scale energy storage remain a barrier, with current infrastructure prioritized for reliable, though less flexible, power sources.
- Solar Curtailment Rate (October)
- Approx. 12%
- Peak Solar Curtailment (Some Days)
- Approx. 40%
- Green Projects Seeking Offtake
- 44 GW
- Clean Power Capacity Goal
- 500 GW by end of decade
- Data Publication Start
- May