Policy briefs · Oct 19, 2026
India Crosses 100GW Solar Capacity Milestone, Reshaping Its Electricity Generation Mix
India's Central Electricity Authority confirmed on October 19 that cumulative installed solar photovoltaic capacity has crossed 100 gigawatts, a milestone reached six months ahead of the original 2030 National Solar Mission trajectory. The landmark was achieved with the synchronisation of the Rajasthan Ultrascale Solar Park's final 3GW phase. Solar now accounts for 18 percent of India's installed electricity capacity and supplies 14 percent of annual generation, up from 4 percent in 2021. The government revised its 2030 solar target upward to 500GW.
Contents
Key takeaways
- 100GW solar capacity milestone crossed October 19; six months ahead of schedule
- Rajasthan Ultrascale Solar Park final phase (3GW) contributed the landmark unit
- Solar supplies 14 percent of annual electricity generation in India
- 2030 target revised from 280GW to 500GW solar
- India attracted $18 billion in renewable energy investment in 2025-26, highest on record
The Milestone and What Drove It
India's Central Electricity Authority confirmed on October 19 the grid synchronisation of the final 3GW phase of the Rajasthan Ultrascale Solar Park, operated by Solar Energy Corporation of India under a consortium of public and private investors, bringing cumulative installed solar capacity to 102.3GW. The original 100GW target was set under the National Solar Mission in 2020 with a 2030 deadline; achieving it in late 2026 reflects a significant acceleration in deployment pace driven by falling module prices (Indian utility-scale solar has reached a record low levelised cost of electricity of INR 2.14 per unit), streamlined regulatory clearances under the Green Energy Corridor framework, and large-scale adoption by commercial and industrial consumers under net metering.
The composition of India's solar base is more diverse than the utility-scale parks that dominate headlines. Approximately 22GW is distributed rooftop solar, predominantly commercial and industrial installations in states including Gujarat, Maharashtra, and Tamil Nadu. Agricultural solar — panels installed above farmland, allowing dual use of land for crops and power generation — accounts for 8GW and is growing rapidly under state agri-solar schemes. The remaining 72GW is utility-scale ground-mounted, concentrated in Rajasthan, Gujarat, Andhra Pradesh, and Karnataka, where irradiation levels and available land area make large parks economically optimal.
Industrial and Policy Implications
The 100GW milestone is economically significant beyond the electricity system. India's domestic solar manufacturing sector has expanded substantially under the Production Linked Incentive scheme: domestic module production now meets approximately 40 percent of annual installations, up from 12 percent in 2022. Indian solar manufacturers including Adani Green Energy, Waaree Energies, and Premier Energies have built integrated supply chains covering cells, modules, and mounting structures. While China still dominates the high-end wafer and cell production technology, India has reached competitive cost parity in module assembly and is investing in cell manufacturing capacity with 2028 commercial targets.
The government's revision of the 2030 solar target from 280GW to 500GW, announced by Union Power Minister Manohar Lal Khattar alongside the milestone confirmation, reflects both the faster-than-expected deployment pace and an upward revision of India's projected electricity demand growth. The 500GW target implies an additional 400GW of deployment in four years, requiring annual installation rates of approximately 100GW — a significant step up from the current 25-30GW annual rate. Achieving this will require accelerated grid expansion, storage integration (India has 8GW of battery storage deployed, against a requirement of 50-80GW by 2030), and deeper capital markets for renewable energy finance.
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