Why in News: India’s installed rooftop solar capacity touched 20.8 GW by end-December 2025, with 7.1 GW added during 2025 — a 122–123% year-on-year jump from 3.2 GW in 2024. Residential consumers accounted for 76% of the growth, driven by the PM Surya Ghar Muft Bijli Yojana. The Mercom India Research Q4 & Annual 2025 Rooftop Solar Market Report data resurfaced in current-affairs discussion on May 22, alongside International Day for Biological Diversity linkages to clean energy.
About PM Surya Ghar Muft Bijli Yojana
A flagship rooftop-solar scheme aimed at making one crore households “energy positive” with free or near-free electricity.
- Launched: February 15, 2024 by Prime Minister Narendra Modi.
- Target: 1 crore (10 million) households by 2026–27.
- Outlay: ₹75,021 crore.
- Benefit: Up to 300 units of free electricity per month for participating households.
- Subsidy structure (Central Financial Assistance):
| System size | Subsidy |
|---|---|
| 1 kW | ₹30,000 |
| 2 kW | ₹60,000 |
| 3 kW and above | ₹78,000 (cap) |
- Implementing agency: Solar Energy Corporation of India (SECI).
- Nodal ministry: Ministry of New and Renewable Energy (MNRE).
2025 Rooftop Solar Performance
| Indicator | 2025 Value |
|---|---|
| Rooftop solar added in 2025 | 7.1 GW |
| Rooftop solar added in 2024 | 3.2 GW |
| YoY growth | ~122–123% |
| Residential share of additions | 76% |
| Total installed rooftop solar (Dec 2025) | 20.8 GW |
Metering regime
- Net metering for residential systems (typically <10 kW).
- Gross metering generally applied to larger commercial / industrial installations, subject to state DERC regulations.
India’s Renewable Energy Targets
- 2030 target: 500 GW of non-fossil installed capacity — pledged under the Panchamrit commitments at COP-26 (Glasgow, November 2021).
- National Solar Mission (revised): 280 GW of solar by 2030.
- Total installed RE capacity (as of March 31, 2026): ~274.68 GW, including ~150.26 GW of solar.
- India’s global rank in renewable energy capacity: 3rd (IRENA 2026) — after China and the United States.
Solar Manufacturing Ecosystem
- PLI Scheme for High Efficiency Solar Modules — total outlay ~₹24,000 crore:
- Phase I: ₹4,500 crore (2021).
- Phase II: ₹19,500 crore (2023).
- ALMM (Approved List of Models and Manufacturers): Restricts use of non-Indian modules (and progressively cells) in government-supported projects — pushing domestic manufacturing.
- Domestic capacity (2025 estimate):
| Stage | Capacity |
|---|---|
| Modules | ~75 GW |
| Cells | ~25 GW |
| Wafer / Ingot | <2 GW |
The wafer–ingot stage remains the weak link in India’s solar manufacturing value chain.
Key Challenges
- DISCOM finances: Rooftop net-metering shifts revenue away from utilities to consumers — straining already stressed distribution companies.
- Anti-dumping vs. self-sufficiency: Trade remedies on Chinese cells/modules must be balanced against the timeline for genuine cell-level self-reliance.
- Rural penetration: Most rooftop adoption is concentrated in urban, middle- and upper-middle-class households.
- Aggregator / RESCO models: Third-party-ownership (Renewable Energy Service Company) penetration is still limited.
- Land-use trade-offs: Utility-scale solar competes with agricultural land use in arid and semi-arid regions.
Way Forward
- Solar + storage co-deployment: Battery integration is essential for managing the rising share of variable RE.
- Community-scale solar and agri-PV (agrivoltaics — solar over farmland) pilots.
- Smart meters and time-of-day (ToD) tariffs to align consumption with solar generation.
- PM-KUSUM expansion — solarisation of agricultural pumps (Components A, B and C).
- Strengthening discom-rooftop financial frameworks (e.g. utility-led aggregation models).
UPSC Relevance
- GS Paper 3 — Economy: Infrastructure (energy); inclusive growth; industrial policy.
- GS Paper 3 — Environment: Climate change mitigation; India’s NDCs; energy transition.
- GS Paper 3 — Science & Technology: Indigenisation; PLI; solar manufacturing technology.
- Mains themes: Energy transition and just transition; rooftop solar and DISCOM viability; manufacturing self-reliance; meeting Panchamrit commitments.
- Prelims angle: PM Surya Ghar specifics, SECI, MNRE, ALMM, Panchamrit pledges, IRENA rankings, India’s NDCs.
Facts Corner
- PM Surya Ghar Muft Bijli Yojana: Launched February 15, 2024.
- Outlay: ₹75,021 crore.
- Subsidy: Up to ₹78,000 per household; 300 free units/month.
- Target: 1 crore households by 2026-27.
- Total rooftop solar (Dec 2025): 20.8 GW.
- 2025 additions: 7.1 GW (122–123% YoY).
- Residential share of growth: 76%.
- India’s total installed RE (Mar 2026): ~274.68 GW; solar: ~150.26 GW.
- India’s global RE rank: 3rd (IRENA 2026, after China and USA).
- 2030 non-fossil target: 500 GW — Panchamrit, COP-26.
- 2030 solar target: 280 GW.
- PLI Solar outlay: ₹24,000 crore (Phase I + Phase II).
- Nodal ministry: Ministry of New and Renewable Energy (MNRE).
- Implementing agency: Solar Energy Corporation of India (SECI).
- ALMM: Approved List of Models and Manufacturers.
Sources: MNRE, PIB, PM Surya Ghar
