Environment & Climate
India curtails solar energy as transmission limits and low storage hinder grid integration
Grid bottlenecks and inflexible coal plants forced India to turn down nearly 11 terawatt-hours of clean power despite surging summer demand.
The short version
- India curtailed nearly 11 terawatt-hours of solar power over a 15-month span due to grid bottlenecks, limited storage, and inflexible thermal power plants.
- Renewable developers are absorbing revenue losses because grids cannot safely evacuate afternoon peak solar generation from concentrated hubs like Gujarat and Rajasthan.
- The country has expanded clean energy to over half of its total installed capacity, yet coal continues to supply the bulk of daily electricity.
- India must rapidly deploy energy storage and transmission infrastructure to meet its 2030 target of 500 gigawatts of non-fossil capacity.
Key facts
- Over the past 15 months, India curtailed nearly 11 terawatt-hours of solar energy, an amount sufficient to power approximately 10 million households, according to official data and research by energy think tank Ember.[Associated Press]
- While clean power capacity exceeds 300 gigawatts and represents more than half of India's total installed capacity, coal continues to generate most of the nation's electricity.[Associated Press]
- Gujarat and Rajasthan account for roughly 50% of India's solar power capacity, causing regional transmission corridor congestion during peak afternoon generation.[Associated Press]
- Ember research found that India met only about 80% of its annual transmission construction goals over the preceding five years.[Associated Press]
- Government figures from July showed approximately 3 gigawatts of battery storage and 7.4 gigawatts of operational pumped-storage capacity, compared to projected storage requirements of about 74 gigawatts by 2032.[Associated Press]
- India has targeted 500 gigawatts of clean power capacity by 2030, with non-fossil sources expected to comprise nearly 70% of installed capacity by 2036.[Associated Press]
What remains uncertain
- It remains unclear whether India can accelerate transmission line construction and battery deployment quickly enough to match rapid load growth from electrification and data centers.[Associated Press]