Key facts
- India's installed renewable energy capacity is 300GW, 54% of its total 552GW capacity.
- Transmission constraints caused nearly two-thirds of renewable energy curtailment in Q1 2026.
- One in four inter-state transmission projects face delays of over a year.
- India needs $400-$500 billion to meet its 2030 renewables target.
- 83% of India's climate mitigation finance is sourced domestically.
- The International Energy Agency predicts India's electricity demand will increase by 80% by 2035.
India has achieved a significant milestone in its energy transition, with renewable sources briefly meeting over half of the country's peak power demand in July, a repeat of a similar event last year. This reflects the rapid growth of non-fossil fuels in India's electricity mix, with installed renewable capacity now at 300GW, constituting 54% of the total 552GW capacity. This achievement surpasses a target that was set to be met five years later.
However, this progress is tempered by critical challenges, primarily a shortage in grid transmission capacity, which has lagged behind the build-out of renewable generation projects. According to the energy think-tank Ember, transmission constraints accounted for nearly two-thirds of all renewable energy curtailment in the first quarter of 2026, amounting to 300 gigawatt-hours. This means a substantial amount of clean energy produced is being wasted due to delays in inter-state transmission projects, with one in four such projects facing over a year's delay.
Experts attribute this issue to poor planning and the difficulty in matching the speed of generation projects with grid development. While India could previously absorb 10-15GW of new capacity annually, the pace has accelerated dramatically to a record 51GW last year, overwhelming existing infrastructure. The concentration of renewable projects in states like Gujarat and Rajasthan further exacerbates the problem of power evacuation.
Analysts view the growing mismatch between generation and transmission as the most critical operational risk to India's 2030 target of 500GW of non-fossil electricity. A potential solution, building battery storage systems, has been hampered by a significant jump in battery prices, raw material shortages linked to Middle East conflicts, and increased financing costs due to a fall in the Indian currency.
Financing remains a broader industry-wide challenge. Despite global capital availability for green transitions, Indian clean energy companies struggle to access it. Estimates suggest India needs $400-$500 billion to meet its 2030 target, yet around 83% of its climate mitigation finance is currently sourced domestically. International climate finance commitments, such as the $100 billion annually pledged by developed nations, have largely not materialized for emerging economies outside China, which receive only about 15% of global clean-energy investment.
Experts emphasize that addressing these gaps in finance, transmission infrastructure, and storage is crucial, especially as India, the world's third-largest emitter, faces a sharp rise in electricity demand, projected to grow by 80% by 2035. The International Energy Agency credits India's renewable expansion for slowing global emissions, highlighting the country's pivotal role in achieving global climate goals.