Renewable Energy in India: Solar, Wind, and Green Hydrogen

In 2015, India committed to 175 GW of renewable energy by 2022 at the Paris climate summit. The world was sceptical. By 2022, India had installed 150 GW — not 175, but a fivefold increase from 2015's 30 GW. By 2025, India crossed 200 GW of renewable capacity, making it the world's fourth-largest renewable energy market after China, the US, and Brazil.

But the transition is uneven. Solar has boomed (tariffs below ₹2/kWh — cheaper than coal in daytime). Wind has stalled (capacity additions falling year-on-year). Green hydrogen is a promise — exciting but expensive. And coal still accounts for 50% of installed capacity and 70% of electricity generation. India's energy transition is not a simple story of renewable triumph — it is a complex story of technology disruption, policy push, grid integration challenges, and the political economy of coal.

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[TOPIC CLASSIFICATION]

• Topic type: Environment / Energy — Renewable Energy
• PYQ frequency: High — 2-3 questions in Prelims + 1-2 in Mains GS-3 every year
• Exam stage: Prelims (capacity targets, schemes, locations) + Mains GS-3 (policy analysis, challenges, energy security)
• Primary GS paper: GS 3 (Environment, Energy, Economy)

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[EXAMINER REASONING]

1. Primary trap. Candidates confuse 'installed capacity' (how much the plant CAN generate — measured in GW) with 'electricity generation' (how much it ACTUALLY generates — measured in billion units or GWh). Solar capacity may be 200 GW but its plant load factor (PLF) is only 15-20% (solar shines only 4-5 hours/day at peak). Coal has 55-65% PLF. A 200 GW solar plant generates far less electricity than a 200 GW coal plant. The examiner tests this distinction.

2. Most confused. The difference between targets: (a) 175 GW renewable capacity by 2022 (Paris COP21 commitment — missed, achieved ~150 GW); (b) 500 GW non-fossil fuel capacity by 2030 (COP26 Glasgow commitment — includes large hydro, nuclear); (c) Net-zero emissions by 2070 (COP26 — long-term aspiration, not binding). Many candidates treat all three as equivalent. They are not — different scopes, timelines, and levels of commitment.

3. Key anchor. India's renewable energy policy is built on three pillars: (a) Targets — driven by international commitments (NDC, COP26, COP28) and domestic energy security concerns; (b) Incentives — Viability Gap Funding, Production Linked Incentive (PLI) schemes for solar manufacturing, Green Hydrogen Mission; (c) Infrastructure — Green Energy Corridors (inter-state transmission for renewables), Renewable Purchase Obligations (RPOs), and grid balancing mechanisms.

4. Current affairs hook. The 2024 National Electricity Plan (CEA) projects that India will meet its 500 GW non-fossil target by 2029-30 — five years ahead of schedule. The Green Hydrogen Mission has allocated ₹19,744 crore for SIGHT incentives (Strategic Interventions for Green Hydrogen Transition). The 2024 solar PLI scheme (for domestic solar cell/module manufacturing) received bids for 50 GW capacity — but only 8 GW of domestic manufacturing capacity exists today. India has imposed 40% basic customs duty on imported solar modules (from China) — this protects domestic industry but raises project costs.