BharatNotes India's energy transition — from fossil fuel dependence to 500 GW of renewable energy by 2030 — is among the most consequential policy stories of this decade. UPSC GS3 questions on energy security, renewable energy, nuclear power, and climate commitments require a solid understanding of how each energy source works, its advantages and disadvantages, and where India's programme stands. This chapter provides the scientific foundation; the UPSC connect sections bring it to policy.
PART 1 — Quick Reference Tables
Characteristics of a Good Fuel
| Criterion | Description |
|---|---|
| High calorific value | More energy per unit mass/volume |
| Low ignition temperature | Easy to start burning |
| Moderate burning rate | Not too fast (uncontrollable) or too slow (inefficient) |
| Produces no / less harmful gases | Minimal CO, SO2, NOx, particulates |
| Easily available and affordable | Accessible to common users |
| Easy to store and transport | Safe handling |
| Non-polluting | Minimal environmental impact |
Fossil Fuels — Formation and Problems
| Fuel | Origin | Time of Formation | Problem |
|---|---|---|---|
| Coal | Compressed plant matter (forests) | Carboniferous period (~300 mya) | CO2, SO2, NOx, ash; non-renewable |
| Petroleum | Ancient marine organisms | ~100–600 million years | CO2, CO, hydrocarbons, non-renewable; oil spills |
| Natural Gas | Associated with petroleum deposits | ~100–600 million years | CO2 (but cleaner than coal); methane leaks |
Non-Conventional Energy Sources — Summary
| Source | Principle | India Status | Advantage | Limitation |
|---|---|---|---|---|
| Solar (PV) | Photovoltaic effect | ~150 GW installed (March 2026) | Abundant in India; falling costs | Intermittent; land use |
| Solar thermal | Heat to run turbine | Concentrating Solar Power plants | No fuel cost | High upfront cost; land |
| Wind | Kinetic energy of wind | ~56 GW installed (March 2026) | No emissions; land can be dual use | Intermittent; bird mortality; noise |
| Biomass | Combustion of organic matter | 10+ GW potential | Uses agricultural waste | Air pollution if inefficient; land competition with food |
| Biogas | Anaerobic decomposition | 5+ million domestic biogas plants | Uses cow dung/waste; produces fertiliser | Small scale; feedstock supply |
| Tidal | Kinetic/potential energy of tides | No commercial plant yet in India | Predictable, reliable | Few sites; high cost; marine impact |
| Wave | Kinetic energy of ocean waves | Experimental | Vast resource | Technology immature; cost |
| Geothermal | Earth's internal heat | Puga Valley, J&K (explored) | Base-load; no fuel | Limited to geologically active sites |
| Nuclear (fission) | Splitting heavy atoms | ~8.78 GW (24 reactors, early 2026); PFBR achieved first criticality April 2026 | Base-load; zero CO2 during operation | Radioactive waste; safety; high cost |
| Nuclear (fusion) | Fusing light atoms | Not yet commercially viable globally | Virtually unlimited fuel (H from seawater); no radioactive waste | Extreme conditions needed; ITER project ongoing |
PART 2 — Detailed Notes
1. Conventional Energy Sources
Fossil fuels: Formed over millions of years from buried organic matter. They are energy-dense, easy to transport and store, and power the global economy — but they are finite and their combustion is the primary driver of climate change.
Coal: India has the 5th largest coal reserves globally (~7% of world reserves; 389.42 BT as of 1 April 2024; CMPDI). Coal accounts for ~75% of India's electricity generation. India is both the 3rd largest producer and 2nd largest importer of coal. Thermal power plants burn coal to boil water → steam → turbine → generator. Thermal efficiency: ~33–40% (most energy lost as heat).
Petroleum (crude oil) and Natural Gas: India imports ~88% of its crude oil requirements (FY2024-25; near all-time high) — making energy import dependency a major strategic and economic vulnerability. The Ministry of Petroleum and Natural Gas manages India's energy security. OPEC (Organization of the Petroleum Exporting Countries) pricing decisions directly affect India's current account deficit and inflation.
Hydroelectric power: Kinetic and potential energy of flowing water. Water stored in reservoirs at height (potential energy) is released through turbines. India has approximately 47 GW of installed large hydroelectric capacity (2024); as of March 2026, large hydro stands at ~51 GW (CEA). Large dams have faced controversy — Tehri Dam, Sardar Sarovar (Narmada) — due to displacement of communities, submersion of forests, and environmental impacts.
2. Solar Energy
Photovoltaic (PV) cells: The photovoltaic effect (Becquerel, 1839; practical application by Bell Labs, 1954) converts light directly to electricity. When photons hit a semiconductor (silicon), they knock electrons loose, creating a current. Solar cells are made of silicon wafers with a p-n junction.
Solar thermal systems:
- Solar cookers: Use mirrors to concentrate sunlight onto a black cooking pot. Can reach temperatures up to 140°C. No fuel cost; no air pollution.
- Solar water heaters: Collectors on rooftops absorb sunlight to heat water. Common in domestic and industrial use.
- Concentrating Solar Power (CSP): Large mirrors focus sunlight onto a receiver to generate steam and run a turbine. More efficient than PV for utility-scale power; can include thermal storage (molten salt) to provide power at night.
India's Solar Programme: India's installed solar capacity reached approximately 150 GW as of March 2026 — the world's 4th largest solar market. The Jawaharlal Nehru National Solar Mission (JNNSM) — now part of the National Action Plan on Climate Change (NAPCC) — set the trajectory. India aims for 500 GW from non-fossil fuel sources by 2030 (NDC target).
PM-KUSUM (Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan): Scheme to solarise agriculture — install solar pumps for irrigation and solar panels on agricultural land (agri-voltaics). Three components:
- Component A: Decentralised solar plants (up to 2 MW) on barren agricultural land
- Component B: Standalone off-grid solar pumps for farmers
- Component C: Grid-connected solar pumps and solarisation of existing pumps
3. Wind Energy
Wind energy is converted to electricity by wind turbines. Modern turbines are 80–150 metres tall with blades up to 80 metres long, capturing maximum wind at height. Horizontal axis wind turbines (HAWT) are the standard commercial type.
Wind farms — clusters of wind turbines — are sited where average wind speeds exceed 6 m/s. India has ideal conditions in Tamil Nadu (Muppandal, one of Asia's largest wind farms), Gujarat, Rajasthan, Andhra Pradesh, Karnataka, and Maharashtra. India has ~56 GW of installed wind capacity (March 2026), 4th largest globally.
Offshore wind: Wind speeds are higher and more consistent at sea. India's first offshore wind tender (off Gujarat and Tamil Nadu coasts) aims to develop 1 GW initially. Potential: 127 GW off Indian coast (NIWE estimate).
4. Biomass Energy
Biomass includes all organic material derived from living or recently living organisms: agricultural residues (paddy straw, sugarcane bagasse), wood, animal dung, municipal solid waste, algae.
Direct combustion: Wood and crop residue burning. Major source of indoor air pollution in rural India — 3.8 million premature deaths globally per year linked to household air pollution (WHO). Pradhan Mantri Ujjwala Yojana (PMUY) distributes LPG connections to below-poverty-line households to replace solid biomass cooking fuels.
Biogas: Produced by anaerobic decomposition (fermentation without oxygen) of organic matter by methanogenic bacteria.
Biogas composition: ~55–65% methane (CH4), ~35–45% CO2, traces of H2S. The digester is sealed; dung/waste fed in → bacteria break down organic matter → methane produced → used for cooking or electricity.
By-product: slurry (digested effluent) — an excellent fertiliser, richer in nitrogen and phosphorus than undigested dung.
India has over 5 million domestic biogas plants. Gobar-Dhan (Galvanizing Organic Bio-Agro Resources Dhan) scheme promotes waste-to-energy from cattle dung and agricultural waste.
Biofuels:
- Ethanol: Fermentation of sugar or starch crops (sugarcane, maize). India's Ethanol Blending Programme (EBP) — achieved ~15% blending in FY2024-25 (up from 2% in 2014); E20 (20% target) rollout phased into 2025-26. Reduces import dependency; provides income to sugarcane farmers.
- Biodiesel: Transesterification of vegetable oils or animal fats. India focuses on non-edible oils (Jatropha) to avoid food-fuel competition.
5. Tidal, Wave and Geothermal Energy
Tidal energy: Twice daily tides (caused by gravitational pull of moon and sun on Earth's oceans) can be harnessed using tidal barrages (build a dam across an estuary; water flows through turbines as tide rises and falls) or tidal stream generators (like underwater wind turbines). India's potential sites: Gulf of Kutch (Gujarat), Gulf of Khambhat, Sunderbans. No commercial plant yet.
Wave energy: Kinetic energy of ocean surface waves. Converted to electricity by oscillating water column devices, point absorbers, or overtopping devices. India's coastline offers significant potential but technology is still pre-commercial globally.
Geothermal energy: Earth's internal heat (from radioactive decay in the core and residual heat from planetary formation). High-temperature hydrothermal systems can run steam turbines directly. Lower-temperature systems use heat pumps. India's potential: Puga Valley (Ladakh/J&K), Tattapani (Chhattisgarh), Manikaran (Himachal Pradesh). ONGC and GSI have surveyed these sites; no commercial plants yet.
6. Nuclear Energy
Nuclear fission: Splitting of heavy nuclei (Uranium-235, Plutonium-239) by neutron bombardment. Releases enormous energy (1 kg of U-235 = energy from ~3,000 tonnes of coal). The fission reaction releases neutrons → chain reaction.
Nuclear reactor components:
- Fuel: Uranium-235 (natural U contains 0.7% U-235; enriched for most reactors) or Thorium (India's Three-Stage Nuclear Programme uses thorium — India has world's largest thorium reserves: ~25% of global)
- Moderator: Slows neutrons to increase fission probability. Heavy water (D2O) in Indian PHWRs; ordinary water in PWRs; graphite in some designs.
- Control rods: Made of neutron-absorbing materials (boron, cadmium, hafnium). Inserted/withdrawn to control reaction rate.
- Coolant: Transfers heat from reactor core to steam generator. Heavy water or light water in most designs.
- Shielding: Concrete and steel barriers to contain radiation.
- Containment building: Last line of safety; surrounds reactor vessel.
India's Three-Stage Nuclear Programme (devised by Homi J. Bhabha):
- Stage 1: PHWRs (Pressurised Heavy Water Reactors) using natural uranium → produce Pu-239 as by-product
- Stage 2: Fast Breeder Reactors (FBRs) using Pu-239 + thorium → produce U-233; Prototype FBR (PFBR) at Kalpakkam
- Stage 3: Advanced Heavy Water Reactors (AHWRs) using U-233 and thorium — the final stage exploiting India's vast thorium reserves
Nuclear fusion: Merging light nuclei (e.g., deuterium + tritium → helium + neutron + energy). The sun's energy source. Would provide virtually unlimited clean energy — deuterium from seawater; no radioactive waste products. Challenge: achieving and sustaining the extreme temperatures (~100 million °C) needed to overcome electrostatic repulsion between nuclei. ITER (International Thermonuclear Experimental Reactor) in France — a 35-nation project including India — aims to demonstrate fusion feasibility. Commercial fusion power: unlikely before 2050.
🎯 UPSC Connect: India's National Hydrogen Mission
National Green Hydrogen Mission (2023): India aims to become a global hub for green hydrogen production — using renewable electricity to electrolyse water (2H2O → 2H2 + O2). Hydrogen is used in fertiliser production (replacing natural gas), steel manufacturing (replacing coking coal), and potentially as a transport fuel.
Targets: 5 million metric tonnes (MMT) of green hydrogen production per year by 2030; 125 GW of dedicated renewable energy capacity; ₹19,744 crore government outlay; expected: ₹8 lakh crore investment, 6 lakh jobs.
Green hydrogen can decarbonise sectors that are hard to electrify (heavy industry, long-distance freight, aviation, shipping).
[Additional] Status as of May 2025: 19 companies allocated 8.62 lakh MTPA (862,000 tonnes/year) production capacity; 15 firms awarded 3,000 MW/year electrolyzer manufacturing capacity. No commercial-scale production achieved yet — Phase I (2023–26) focused on electrolyzer scale-up and pilot projects. Cost target: below USD 1/kg by 2030 (current cost ~USD 3–5/kg).
PART 3 — Frameworks & Analysis
Framework: India's Energy Mix and Transition
| Source | Installed Capacity (approx., March 2025) | % of Total | Policy Target (2030) |
|---|---|---|---|
| Coal (thermal) | ~234 GW | ~48% of installed | Phase-down (not elimination) |
| Solar | ~105 GW | ~22% | 280 GW by 2030 (National Solar Mission) |
| Wind | ~48 GW | ~10% | 140 GW by 2030 |
| Large hydro | ~47 GW | ~10% | Expand PSH (pumped storage) |
| Biomass + Small hydro + others | ~27 GW | ~6% | — |
| Nuclear | ~8.78 GW (March 2026; CEA) | ~1.7% | ~22.5 GW by 2031–32 |
| Natural gas | ~25 GW | ~6% | Increase gas share in energy mix |
Framework: Comparing Energy Sources — UPSC Matrix
| Source | Carbon Emissions | Reliability | Land Use | Cost Trend | India's Position |
|---|---|---|---|---|---|
| Coal | Very high | High (base-load) | High | Increasing | Dominant; phase-down in progress |
| Solar | Near zero | Intermittent | High | Rapidly falling | World's 4th largest |
| Wind | Near zero | Intermittent | Moderate | Falling | 4th largest globally |
| Nuclear | Near zero (lifecycle) | High (base-load) | Low | High upfront | Significant; thorium strategy |
| Hydro | Low (lifecycle) | Medium | Very high (large dams) | Moderate | 4th largest |
| Biomass | Variable | Medium | High | Moderate | Large domestic resource |
[Additional] 14a. Small Modular Reactors — India's Nuclear Energy Mission and the SHANTI Act
The chapter covers nuclear fission, India's Three-Stage Programme, and the physics of reactor components. What is missing is the next phase of India's nuclear energy story: Small Modular Reactors (SMRs) — factory-built, passively safe reactors of up to 300 MWe, far smaller than the 700–1,000 MWe plants this chapter describes. The Union Budget 2025-26 launched India's Nuclear Energy Mission with Rs 20,000 crore to indigenously develop and operationalise SMRs by 2033. The SHANTI Act 2025, passed in December, opened nuclear power to private investment for the first time since Independence.
Small Modular Reactors — How They Differ from Conventional Reactors:
The chapter describes pressurised heavy water reactors (PHWRs) with hundreds of pressure tubes, large containment buildings, and active cooling systems. SMRs rethink this architecture:
| Feature | Conventional Large Reactor (PHWR/PWR) | Small Modular Reactor (SMR) |
|---|---|---|
| Output | 700–1,600 MWe | Up to 300 MWe per unit |
| Construction | Built on-site, unique design | Factory-manufactured modules, shipped to site |
| Cooling | Active pumped cooling systems | Passive safety — natural circulation, gravity; no pumps or external power needed for decay heat removal |
| Build time | 10–15 years (typical India) | Target: 60–72 months (5–6 years) |
| Siting | Large water bodies required | Smaller footprint; suitable for retired thermal plant sites, industrial clusters |
| Scalability | All-or-nothing: full reactor or none | Deploy one module; add more as demand grows |
Passive safety is the key physics innovation: if cooling fails, heat dissipates by natural convection and conduction without any human intervention or powered pumps — unlike the active cooling failure that caused the Fukushima Daiichi accident (2011).
India's three SMR designs under development (BARC/DAE):
- BSMR-200 (Bharat Small Modular Reactor): 220 MWe; Pressurised Heavy Water Reactor using slightly enriched uranium; passive safety design; conceptual design completed March 2025; engineering services MoU signed between NPCIL and Engineers India Limited (EIL) in August 2025
- SMR-55: 55 MWe; light water type; for decentralised/remote power
- High-Temperature Gas-Cooled Reactor (HTGR): Up to 5 MWt; for hydrogen generation via high-temperature steam
[Additional] Nuclear Energy Mission, SHANTI Act 2025, and India's 100 GW Nuclear Vision (GS3 — Science & Technology / Energy):
Nuclear Energy Mission — Union Budget 2025-26:
- Finance Minister announced: Rs 20,000 crore for a Nuclear Energy Mission for R&D and deployment of SMRs
- Target: At least 5 indigenously developed SMRs operationalised by 2033
- Long-term vision: 100 GW of nuclear energy by 2047 (Viksit Bharat)
BSMR-200 — Key Project Data (PIB-verified):
- Designer: BARC (Bhabha Atomic Research Centre); Deployer: NPCIL
- Estimated cost per unit: ~Rs 5,700–5,960 crore
- First proposed site: Visakhapatnam (Andhra Pradesh) at a BARC campus; second unit proposed at Tarapur Atomic Power Station (Maharashtra)
- Operational target: 2033
SHANTI Act 2025 — India's Nuclear Sector Reform:
- Full name: Sustainable Harnessing and Advancement of Nuclear Energy for Transforming India (SHANTI) Act, 2025
- Passed: Both Houses of Parliament on 18 December 2025; replaced the Atomic Energy Act 1962 and Civil Liability for Nuclear Damage Act 2010
- Key change: For the first time since Independence, private Indian companies and joint ventures (with up to 49% FDI under automatic route) can build, own, and operate nuclear power plants — ending NPCIL's monopoly
- Liability reform: Removes nuclear supplier liability; only plant operators bear compensation — brings India in line with international nuclear liability conventions (Convention on Supplementary Compensation)
- Regulator: AERB (Atomic Energy Regulatory Board) granted formal statutory independence
- Retained state monopoly: Uranium enrichment, heavy water production, and spent fuel reprocessing remain exclusively with Central Government/DAE
India's current and future nuclear expansion:
- Operating (April 2026): 25 reactors; installed capacity ~8,880 MW (~8.88 GW)
- Under construction: ~10–11 reactors, including Kudankulam 3–6 (VVER-1000, Russia collaboration), Kaiga 5–6 (first concrete March 2026), and GHAVP (Gorakhpur Haryana)
- PFBR milestone: Prototype Fast Breeder Reactor at Kalpakkam achieved first criticality on 6 April 2026 — the trigger for Stage 2 of the Three-Stage Programme
- Target 2031-32: 22,480 MW (22.48 GW)
Global SMR status (as of May 2026):
- Russia: Akademik Lomonosov (floating, 2 × 35 MWe KLT-40S) — world's first floating nuclear power plant; commercially operating since 2020
- China: HTR-PM (Shidaowan, 210 MWe net) — world's first fourth-generation reactor in commercial operation (December 2023); high-temperature pebble-bed gas-cooled design
- Canada: BWRX-300 (Ontario Power Generation) — construction licence granted April 2025; first unit targeted by end of 2029
- No western commercial-scale SMR is yet operating
UPSC synthesis: The Nuclear Energy Mission (Rs 20,000 crore, Budget 2025-26) + SHANTI Act (December 2025, private sector entry) + PFBR first criticality (April 2026) together represent India's most decisive nuclear policy shift since the India-US Civil Nuclear Deal of 2008. The BSMR-200 directly applies this chapter's PHWR reactor physics (heavy water moderator, natural uranium/enriched fuel, chain reaction control) to a smaller, passively safe, factory-built format. The 100 GW by 2047 target is India's answer to the triple challenge: energy security, clean baseload power, and climate commitments.
[Additional] 14b. Pumped Storage Hydropower — India's Giant Rechargeable Battery
The chapter explains that hydroelectric power uses the potential energy of water stored at height — released through turbines to generate electricity. Pumped Storage Hydropower (PSH) reverses this: during periods of excess electricity (midday solar surplus), water is pumped from a lower reservoir to an upper one, storing energy as gravitational potential. When demand peaks, water flows back down through turbines. PSH is the world's — and India's — dominant grid-scale energy storage technology, and the Central Electricity Authority (CEA) has set a target of 100 GW of PSH capacity by 2035-36.
How Pumped Storage Works — The Reversible Pump-Turbine:
A conventional hydroelectric plant has one direction: water flows down, turbine spins, electricity is generated. PSH uses reversible pump-turbines that can:
- Turbine mode: Water flows from upper reservoir → turbine → electricity generation (same as conventional hydro)
- Pump mode: Electric motor (same machine) drives the runner in reverse → pumps water from lower to upper reservoir (energy stored as gravitational potential energy)
Energy accounting:
- Round-trip efficiency: ~75–85% (for every 100 MWh of electricity used to pump, 75–85 MWh is recovered on discharge)
- Duration: typically 6–10 hours of storage per charge-discharge cycle (far longer than most batteries)
- Scale: individual PSH plants range from 100 MW to 3,000 MW+
Why PSH is essential for solar and wind integration: India's solar generation peaks around noon (grid price falls near zero); electricity demand peaks in the evening (6–10 PM). Without storage, this "duck curve" mismatch wastes midday solar and requires expensive gas or coal backup in the evening. PSH solves this precisely — absorbing the midday solar surplus and discharging during the evening peak.
[Additional] India's Pumped Storage Hydropower — CEA 100 GW Roadmap (GS3 — Energy / Environment):
Current installed PSH capacity (as of December 2025):
| Status | Projects | Capacity |
|---|---|---|
| Operational | 10 plants | 7,175.6 MW (~7.2 GW) |
| Under construction | 10 plants | 11,620 MW (~11.6 GW) |
| CEA-concurred, pending start | 6 plants | 9,580 MW (~9.6 GW) |
| Under survey & investigation | 54 sites | 74,940 MW (~75 GW) |
Source: CEA Roadmap to 100 GW of Hydro Pumped Storage Projects (January 2026)
CEA Roadmap target: Commission 100 GW of pumped storage capacity by 2035-36. India's total identified PSH potential: over 267 GW (including off-stream sites).
Key PSH projects:
- Bhivpuri PSP (Maharashtra): 1,000 MW — Tata Power developer; ANDRITZ contract (March 2026, three reversible pump-turbines); grid stabilisation for Maharashtra's renewable expansion
- Saidongar-1 PSP (Maharashtra, Raigad district): 3,000 MW — India's largest planned PSH; 6-hour daily discharge capacity (18 GWh storage); new upper and lower reservoirs
- SJVN Mizoram PSP: 2,400 MW — SJVN Limited (state PSU); across Darzo Nallah tributary of Tuipui River
- Andhra Pradesh PSH pipeline: 22 GW target by 2030; 39 sites assessed with 43.89 GW potential
Policy context:
- Ministry of Power issued dedicated Guidelines to Promote Development of Pump Storage Projects
- India's total energy storage capacity (dominated by PSH) projected to grow from ~7 GW (2025) to 107 GW by 2033
- PSH is the only technology capable of storing energy at 10 GW+ scale in India today — batteries are cost-competitive at shorter durations (1–4 hours) but PSH dominates for 6–10 hour seasonal balancing needs
- ANDRITZ (Austria) is involved in seven PSH projects in India with combined capacity exceeding 11 GW — reflecting the scale of foreign technology involvement in India's PSH ramp-up
UPSC synthesis: PSH is the direct policy application of this chapter's hydroelectric energy physics (potential energy of water at height → kinetic energy → electricity). The CEA's 100 GW target by 2035-36 is India's large-scale answer to solar and wind intermittency — every GW of solar added creates a corresponding need for grid-balancing storage. The physics is identical to a conventional dam (PE = mgh); the innovation is the reversible pump-turbine and the strategic use of the technology as a "battery." India's 267 GW identified potential — compared to 7.2 GW currently operating — shows the scale of the opportunity and the challenge of converting identified potential into commissioned capacity.
[Additional] 14b. India's 500 GW Non-Fossil Target, PM-Surya Ghar, and PM-KUSUM
The chapter classifies conventional vs non-conventional energy sources. India's COP26 "Panchamrit" pledge — 500 GW non-fossil installed capacity by 2030 — and the flagship schemes PM-Surya Ghar Muft Bijli Yojana (rooftop solar) and PM-KUSUM (farm solar) are the live policy translation, with current installed capacity data as of May 2026.
Key Terms — Renewable Energy Policy:
| Term | Meaning |
|---|---|
| Non-fossil capacity | Renewables (solar, wind, biomass, small hydro) + Large Hydro + Nuclear; ALL non-fossil-fuel-based electricity sources |
| Renewable Energy (RE) | Solar, wind, biomass, small hydro (<25 MW), waste-to-energy; subset of non-fossil |
| Panchamrit | 5 climate commitments announced by PM at COP26 Glasgow (November 2021) |
| NDC (Nationally Determined Contribution) | Country-level climate commitment under Paris Agreement; India updated NDC in August 2022 |
| PM-Surya Ghar Muft Bijli Yojana | Rooftop solar scheme launched 13 February 2024; outlay ₹75,021 crore; target 1 crore households |
| PM-KUSUM | Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan; solar for farmers; launched 2019 |
| 500 GW target | India's COP26 pledge: 500 GW non-fossil installed capacity by 2030 |
[Additional] India's Renewable Energy Transition — 500 GW Pledge to On-Ground Schemes (GS3 — Environment / Energy):
India's COP26 "Panchamrit" pledge (Glasgow, November 2021):
| # | Pledge |
|---|---|
| 1 | India will achieve 500 GW non-fossil installed capacity by 2030 |
| 2 | 50% of cumulative electric power installed capacity from non-fossil sources by 2030 |
| 3 | Reduce total projected carbon emissions by 1 billion tonnes by 2030 |
| 4 | Reduce GDP emissions intensity by 45% by 2030 (from 2005 levels) |
| 5 | Achieve Net Zero by 2070 |
Updated NDC (Aug 2022) — legally submitted to UNFCCC:
| Target | Detail |
|---|---|
| Emissions intensity reduction | 45% by 2030 (vs 2005 baseline) — upgraded from earlier 33-35% pledge |
| Non-fossil electric power capacity share | 50% by 2030 — upgraded from earlier 40% pledge |
| Net Zero | 2070 |
India's current RE capacity (as of 31 March 2026):
| Source | Installed capacity |
|---|---|
| Solar | 150.26 GW (crossed 150 GW milestone) |
| Wind | ~50 GW |
| Bio-power | ~11 GW |
| Small hydro | ~5 GW |
| RE total (solar + wind + bio + small hydro) | ~216 GW |
| Large hydro | ~47 GW |
| Nuclear | ~8 GW |
| TOTAL non-fossil | 283.46 GW |
| Coal/Lignite/Gas | ~242 GW |
Critical milestone:
- India crossed 50% non-fossil cumulative installed capacity share in June 2025 — 5 years ahead of the 2030 NDC target
- India ranks 3rd globally in RE installed capacity (after China, USA)
- FY 2025-26 solar capacity addition: 44.61 GW — India's highest-ever single-year solar capacity addition; brought cumulative solar past 150 GW
PM-Surya Ghar Muft Bijli Yojana (PM-SGMBY):
| Parameter | Detail |
|---|---|
| Launched | 13 February 2024 |
| Outlay | ₹75,021 crore |
| Target | 1 crore (10 million) households with rooftop solar by FY 2026-27 |
| Capacity goal | ~30 GW additional rooftop solar |
| Free electricity | Up to 300 units/month for participating households |
| Central Financial Assistance (CFA) | ₹30,000 for 1 kW + ₹60,000 for 2 kW + ₹78,000 for ≥3 kW (max) |
| Implementing | MNRE + REC + DISCOMs |
| Discom DBT | Subsidy paid directly to consumer's bank account |
PM-KUSUM — solar for farmers:
| Parameter | Detail |
|---|---|
| Full name | Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan |
| Launched | March 2019 |
| Implementing ministry | MNRE (NOT Ministry of Agriculture, despite serving farmers) |
| Component A | Solar plants on barren/fallow agricultural land (up to 10 MW each, max 500 kW per farmer) |
| Component B | Standalone solar pumps for off-grid agriculture |
| Component C | Solarisation of grid-connected agricultural pumps |
| FY 2025-26 KUSUM addition | 7.67 GW (7,672 MW) — record year |
| Cumulative under KUSUM | ~13.1 GW (13,111 MW) |
Why solar dominates India's RE addition:
| Factor | Reason |
|---|---|
| Solar irradiance | India receives ~5-7 kWh/m²/day average — high solar potential nationwide |
| Cost decline | Solar PV cost fell from ₹18/kWh (2010) to ₹2.5/kWh (2024) — cheapest electricity source in many states |
| Grid integration | DISCOMs have absorbed solar; daytime grid demand matches solar output |
| Modular | Can be installed on rooftops, fallow land, floating on reservoirs (Kayamkulam, Rihand, Omkareshwar — India's largest 600 MW floating solar) |
| International Solar Alliance | India-led ISA (launched 2015, treaty 2020) — 122 member countries promoting solar globally |
Other key India renewable initiatives:
| Initiative | Detail |
|---|---|
| National Green Hydrogen Mission | ₹19,744 cr; 5 MMT green H₂ by 2030 (Cabinet approved Jan 2023) |
| Bharat Stage VI emission norms | Adopted April 2020 (skipping BS V) — leapfrog to global standards |
| FAME-II (Electric Vehicles) | ₹10,000 cr scheme; PM Electric Drive Revolution scheme (PM E-DRIVE) launched 2024 |
| LiFE Mission | Lifestyle for Environment — behavioural climate action |
| Mission 500 GW | The umbrella programme towards 500 GW non-fossil by 2030 |
UPSC synthesis: Key exam facts: India's COP26 Glasgow pledge ("Panchamrit", November 2021) = 500 GW non-fossil by 2030 + 50% non-fossil electric power + 45% emissions intensity reduction + Net Zero 2070; updated NDC submitted August 2022; as of 31 March 2026 — total non-fossil = 283.46 GW, solar = 150.26 GW; India crossed 50% non-fossil share in June 2025 = 5 years ahead of 2030 target; India ranks 3rd globally in RE capacity; FY 2025-26 solar addition = 44.61 GW (highest-ever); PM-Surya Ghar launched 13 Feb 2024 = outlay ₹75,021 cr = 1 crore households target = ₹78,000 CFA cap for 3 kW = free electricity up to 300 units/month; PM-KUSUM launched 2019 under MNRE = FY 2025-26 added 7.67 GW. Prelims trap: "500 GW non-fossil by 2030" includes large hydro + nuclear + RE (NOT just renewables); updated NDC commits 50% non-fossil electric power capacity (the LEGAL target — 500 GW is the political pledge); PM-Surya Ghar outlay = ₹75,021 cr (do not confuse with ₹78,000 which is the per-household CFA cap for 3 kW); PM-KUSUM is under MNRE (NOT Ministry of Agriculture, despite serving farmers); India's Net Zero target = 2070 (NOT 2050 — that's USA/UK/EU; NOT 2060 — that's China); 50% non-fossil share crossed in June 2025 (5 years AHEAD of 2030 target).
Exam Strategy
Prelims traps:
- India has the world's largest thorium reserves — this is why India's three-stage nuclear programme culminates in thorium utilisation.
- ITER (fusion) is in Cadarache, France — India is a partner nation.
- Biogas is primarily methane (CH4), not hydrogen or CO2.
- PM-KUSUM is specifically for agricultural solar pumps and solar power on farmland — not urban rooftop solar (that is PM Surya Ghar Muft Bijli Yojana, formerly Rooftop Solar Programme).
- India's renewable energy target is 500 GW non-fossil by 2030 — this includes nuclear and large hydro, not just solar and wind.
Mains frameworks:
- Energy transition: fossil fuel dependence → climate imperative → renewable ramp-up → grid integration challenge → storage solutions
- Nuclear energy: Homi Bhabha's three-stage vision → India-US Civil Nuclear Deal (2008) → NSG waiver → current capacity → expansion plans
- Energy poverty: access to clean cooking fuel → Ujjwala Yojana → shifting from biomass → health co-benefits
Practice Questions
Q1 (Prelims 2023): With reference to India's solar energy sector, consider the following statements about the PM-KUSUM scheme… (Tests specific provisions and targets of PM-KUSUM)
Q2 (Prelims 2021): Consider the following statements about nuclear power generation in India: [about three-stage programme, thorium, PFBR] (Tests India's three-stage nuclear programme and thorium strategy)
Q3 (Mains GS3 2023): The National Green Hydrogen Mission has been described as India's transformational initiative for energy transition. Discuss its significance, targets, and challenges. Science of electrolysis → green hydrogen → industrial decarbonisation → India's mission
Q4 (Mains GS3 2020): Why is India's ambitious renewable energy target facing headwinds? Examine the challenges and suggest measures to accelerate India's renewable energy transition. Science of solar/wind → intermittency challenge → grid integration → storage → policy incentives
