Science & Technology·Revision Notes

Renewable Energy — Revision Notes

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Version 1Updated 10 Mar 2026

⚡ 30-Second Revision

  • India's RE Target: 500 GW non-fossil fuel capacity by 2030.
  • Net-Zero Target: 2070.
  • Green Hydrogen Mission: 5 MMT annual production by 2030.
  • Major Sources: Solar, Wind, Hydro, Biomass.
  • Key Schemes: PM-KUSUM (farmers, solar), PLI for Solar PV (manufacturing), Green Hydrogen Mission.
  • Regulatory Bodies: MNRE, CERC, SERCs.
  • Key Concepts: RPO, REC, Net Metering, Grid Parity.
  • International: India is a founding member of ISA.

2-Minute Revision

Renewable energy, derived from inexhaustible natural sources, is central to India's energy strategy, aiming for 500 GW non-fossil fuel capacity by 2030 and net-zero by 2070. Solar and wind power lead the expansion, supported by schemes like PM-KUSUM for rural solar adoption and PLI for domestic manufacturing of solar PV modules.

The National Green Hydrogen Mission, targeting 5 MMT production by 2030, is a game-changer for decarbonizing industries and enhancing energy security. While progress is significant, challenges persist, including intermittency, grid integration, land acquisition, and financing.

Energy storage solutions and smart grid technologies are crucial for overcoming these hurdles. India's leadership in the International Solar Alliance underscores its global commitment to clean energy.

Understanding these facets, from policy to technology and challenges, is vital for UPSC aspirants.

5-Minute Revision

Renewable energy is India's strategic imperative for energy security, climate action, and sustainable growth. The nation has set ambitious targets: 500 GW of non-fossil fuel electricity capacity by 2030 and net-zero emissions by 2070.

Key sources include solar (utility-scale and rooftop), wind (onshore and emerging offshore), hydro (large and small), and biomass. Government initiatives like the PM-KUSUM scheme empower farmers through solar pumps and grid-connected solar plants.

The Production Linked Incentive (PLI) scheme for High-Efficiency Solar PV Modules aims to build a robust domestic manufacturing ecosystem, reducing import dependence. The landmark National Green Hydrogen Mission, launched in 2023, targets 5 Million Metric Tonnes (MMT) of green hydrogen production annually by 2030, positioning India as a global leader in this crucial decarbonization fuel.

Despite rapid progress, significant challenges remain. The intermittency of solar and wind power necessitates advanced energy storage solutions (e.g., battery energy storage systems, pumped hydro) and smart grid technologies for stable grid integration.

Land acquisition for large projects, securing long-term financing, and the financial health of state electricity distribution companies (Discoms) are persistent hurdles. The future also demands a focus on the circular economy for renewables, addressing waste management of retired solar panels and wind turbine blades.

India's active role in international forums, particularly as a founding member of the International Solar Alliance (ISA), highlights its commitment to global climate action and technology transfer. For UPSC, a holistic understanding encompassing policy, technology, economic implications, environmental impact, and international cooperation is essential.

Prelims Revision Notes

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  1. Targets:500 GW non-fossil fuel capacity by 2030; Net-Zero by 2070; Green Hydrogen Mission: 5 MMT annual production by 2030.
  2. 2
  3. Key Schemes & Initiatives:

* PM-KUSUM (2019): Solar pumps, grid-connected solar plants on barren land for farmers. * National Green Hydrogen Mission (2023): Promote production, utilization, export of Green Hydrogen. * PLI Scheme for High-Efficiency Solar PV Modules: Boost domestic manufacturing.

* Solar Rooftop Programme: Subsidies for residential rooftop solar. * Green Energy Corridors: Dedicated transmission lines for RE evacuation. * Waiver of ISTS charges: For RE projects, reduces transmission costs.

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  1. Sources:Solar (PV, Thermal), Wind (Onshore, Offshore), Hydro (Large & Small, Large Hydro reclassified as RE in 2019), Biomass, Geothermal, Tidal.
  2. 2
  3. Concepts:

* RPO (Renewable Purchase Obligation): Mandate for Discoms to buy RE. * REC (Renewable Energy Certificate): Market instrument to fulfill RPO. * Net Metering: Credits for surplus rooftop solar fed to grid. * Grid Parity: RE cost equals conventional grid cost. * VGF (Viability Gap Funding): Government support for financially unviable but strategically important projects.

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  1. Institutions:MNRE (Ministry of New and Renewable Energy), CERC (Central Electricity Regulatory Commission), SERCs (State Electricity Regulatory Commissions), ISA (International Solar Alliance).
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  3. India's Standing:4th in wind, 5th in solar globally (as of recent data).

Mains Revision Notes

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  1. Introduction:Frame with India's energy demand, climate commitments (NDCs, Net-Zero), and strategic shift to renewables for energy security and sustainable growth.
  2. 2
  3. Progress & Achievements:

* Rapid capacity addition (solar, wind). Mention specific targets (500 GW by 2030). * Policy support: PM-KUSUM, Green Hydrogen Mission, PLI for manufacturing, RPO/REC framework. * International leadership: ISA, climate diplomacy. * Economic benefits: Job creation, investment attraction.

    1
  1. Challenges & Bottlenecks:

* Technical: Intermittency, grid integration, need for energy storage, forecasting accuracy. * Economic/Financial: High upfront costs, financing availability, Discom financial health, PPA sanctity. * Land & Environment: Land acquisition, environmental impact (waste management of panels/blades). * Manufacturing: Import dependence for critical components, R&D gaps.

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  1. Policy Interventions & Way Forward:

* Technology: Invest in R&D for advanced storage, smart grids, Green Hydrogen. * Regulatory: Strengthen RPO enforcement, Discom reforms, clear offshore wind policy. * Financial: Green bonds, innovative financing models, VGF for emerging technologies.

* Manufacturing: Expand PLI schemes, foster domestic supply chains. * Social: Streamlined land acquisition, skill development, community participation in DRE. * Circular Economy: Policies for recycling and sustainable end-of-life management.

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  1. Inter-Topic Connections:Link to GS-II (Governance, IR, Federalism), GS-III (Economy, S&T, Environment, Infrastructure), GS-IV (Ethics of sustainable development). Emphasize multi-dimensional analysis.

Vyyuha Quick Recall

To remember India's RE strategy, think: S.W.I.F.T. G.R.E.E.N. P.L.A.N.S.

  • Solar & Wind (primary sources)
  • Intermittency (key challenge)
  • Financing (major hurdle)
  • Targets (500 GW, Net-Zero 2070)
  • Green Hydrogen (future fuel)
  • RPO & REC (market mechanisms)
  • Energy Storage (solution to intermittency)
  • Economic Growth (driver)
  • Net Metering (rooftop solar)
  • PM-KUSUM (farmers' scheme)
  • Land Acquisition (challenge)
  • Atmanirbhar Bharat (manufacturing focus)
  • National Solar Mission (historic push)
  • Smart Grid (integration solution)
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