The Capacity–Generation Paradox in India’s Energy Transition

India’s clean capacity has surpassed fossil fuels, yet coal still dominates generation, highlighting India’s capacity-generation paradox.

India’s Clean Energy Transition

• Clean Capacity: Clean-energy capacity reached 331.7 GW, surpassing fossil-fuel capacity of 302 GW.
• Solar Revolution: Solar capacity surged from 0.07 GW in 2010 to around 211 GW in 2026.
• Coal Backbone: Coal remains around 254 GW and supplies nearly 70% of electricity generation.
• Investment Shift: Between 2025-26, India added 75.5 GW of solar but only 3.8 GW of coal capacity.
• Emerging Transition: Solar now equals nearly 80% of coal capacity, signalling a gradual shift towards renewable-led power.

Bridging the Capacity–Generation Gap

• Intermittency: Solar depends on daylight; despite 211 GW capacity, coal still supplies nearly 70% of generation.
• Utilisation Gap: Installed capacity shows potential output, while actual generation depends on resource availability, PLF, and grid evacuation.
• Storage Deficit: CEA projects substantial Battery Energy Storage Systems (BESS) needs by 2030, making storage crucial for shifting daytime surplus to evening peaks.
• Transmission Bottleneck: Rajasthan and Gujarat are major renewable hubs; Green Energy Corridor-II targets evacuation of 44 GW, with 26 GW already integrated.
• Demand Surge: India’s peak demand reached 256.1 GW in April 2026, driven partly by summer cooling, keeping firm generation essential.

Need for Higher Renewable Generation

• Energy Security: Coal supplies nearly 70% of electricity; greater renewable generation can reduce dependence on fossil-fuel-based power.
• Decarbonisation: Non-fossil sources accounted for 29.2% of India’s electricity generation in FY2025-26, showing the gap between capacity and generation.
• Demand Fulfilment: India generated 1,845.9 BU of electricity in FY2025-26, highlighting the scale of reliable power required for economic growth.
• Asset Efficiency: Rapid solar additions require storage, transmission, and hybridisation so installed assets translate into maximum usable electricity.
• Transition Credibility: India achieved 50% non-fossil installed capacity in June 2025, but generation must now catch up with this capacity milestone.

Enabling a Flexible Energy Transition

• Economic Viability: Storage and transmission investments must ensure competitive, reliable, and round-the-clock renewable electricity supply.
• Market Reform: Real-time electricity markets and ancillary services can balance variable renewable generation and demand efficiently.
• Consumer Flexibility: 5.97 crore smart meters enable demand response, time-of-day pricing and flexible electricity consumption patterns.
• Energy Justice: PM-KUSUM promotes decentralised solar power, supporting affordable, reliable electricity access for farmers and rural communities.

Key Challenges

• Capacity–Generation Gap: Clean capacity reached 331.7 GW, yet coal generates nearly 70% of India’s electricity, reflecting low renewable utilisation.
• Storage Deficit: CEA estimates India needs about 41.7 GW/208 GWh of BESS by 2030 to support renewable integration.
• Grid Bottlenecks: Renewable-rich Rajasthan and Gujarat require stronger interstate transmission to evacuate large-scale solar and wind power.
• Demand Surge: India’s rapidly rising electricity demand from industry, cooling, EVs, and urbanisation keeps coal generation significant despite faster renewable-capacity growth.

Way Forward

• Store the Sun: Scale BESS and pumped storage to shift surplus solar power into evening peaks and improve renewable reliability.
• Build Green Highways: Expand Green Energy Corridors to evacuate renewable power from Rajasthan and Gujarat to distant demand centers.
• Hybridise & Predict: Combine solar + wind + storage with AI forecasting to create stable generation and minimise curtailment.
• Flex the Grid: Modernise thermal and hydropower plants while using time-of-day tariffs and demand response for peak balancing.
• Share Power Smartly: Strengthen interstate electricity markets to move surplus renewable power efficiently across regions and reduce regional imbalances.

“Capacity must become reliable power”; India needs storage, stronger grids, and flexible markets for a cleaner energy future.

Reference: The Economic Times

PMF IAS Pathfinder for Mains – Question 791

Q. India’s energy transition is shifting from capacity expansion to reliable power generation. Analyse the emerging capacity-generation gap and suggest measures to ensure reliable renewable power. (250 Words) (15 Marks)

Approach

• Introduction: Write a contextual introduction about capacity–generation paradox in India.
• Body: Write about the need for reliable power generation, also mention the emerging capacity-generation gap, and suggest measures to ensure reliable renewable power.
• Conclusion: Emphasise storage, smart grids, flexible markets, and demand management to convert renewable capacity into reliable generation, grid resilience, and sustainable growth.