India’s renewable transition caught between stranded power and institutional inertia

Why in the News?

India’s renewable energy push is facing a major challenge as large amounts of renewable power remain unused due to grid congestion. In Rajasthan, over 4,000 MW of operational renewable capacity cannot supply electricity during peak hours despite the state having 23 GW installed capacity and only 18.9 GW evacuation margin. Even costly 765 kV transmission corridors designed for 6,000 MW are operating below 20% utilisation, highlighting serious institutional and grid management gaps as India targets 500 GW non-fossil capacity by 2030.

Why is India facing stranded renewable power despite large transmission investments?

1. Transmission congestion: More than 4,000 MW of renewable capacity in Rajasthan remains unable to evacuate power during peak hours due to grid bottlenecks despite being fully commissioned.
2. Mismatch between capacity and evacuation margin: Rajasthan has approximately 23 GW of renewable capacity but only 18.9 GW evacuation margin, creating structural congestion.
3. Underutilized transmission corridors: High-capacity 765 kV double-circuit corridors designed for about 6,000 MW evacuation are operating at only 600-1,000 MW, representing utilisation levels below 20%.
4. High infrastructure costs: These corridors require ₹4,000-5,000 crore investment, yet deliver only a fraction of intended value due to conservative grid operation.
5. Delayed connectivity readiness: Many commissioned renewable plants cannot inject power due to gaps in transmission infrastructure readiness.

How does institutional conservatism affect grid operations?

1. Grid security prioritisation: The grid operator’s mandate focuses primarily on maintaining system stability, leading to conservative operational decisions that limit utilisation of transmission assets.
2. Absence of utilisation benchmarks: Transmission infrastructure lacks automatic utilisation benchmarks or performance review triggers, allowing persistent underutilisation.
3. Limited accountability: Institutional frameworks do not assign clear responsibility for inefficiencies in transmission utilisation.
4. Static security frameworks: Grid operations rely on static security rules rather than dynamic risk assessment mechanisms, restricting operational flexibility.
5. Commercial burden on generators: Renewable generators bear the financial impact of congestion and curtailment, despite planning failures occurring elsewhere in the system.

Why is there a structural disconnect between planning and grid operations?

1. Planning assumptions vs operational reality: The Central Transmission Utility (CTU) plans corridors based on projected renewable capacity under General Network Access (GNA) assumptions.
2. Mismatch in actual power flows: Transmission planning may assume 6,000 MW capacity evacuation, while operational permissions allow only about 1,000 MW of actual flow.
3. Investment decisions based on approvals: Developers invest billions of rupees based on connectivity approvals and expected transmission timelines.
4. Operational restrictions: When the grid becomes operational, physical infrastructure limitations prevent full capacity utilisation.
5. Planning-operation misalignment: This creates a credibility gap between regulatory approvals and operational outcomes.

How does the current curtailment mechanism create inequity in the power sector?

1. Curtailment concentration: Current practices impose curtailment disproportionately on projects with Temporary General Network Access (T-GNA).
2. Unequal risk allocation: Projects with Permanent GNA continue uninterrupted operation, while temporary access projects absorb most congestion impacts.
3. Investment uncertainty: Developers that completed projects in good faith face unpredictable shutdowns during peak hours.
4. Financial stress on renewable developers: Congestion leads to lost generation revenue and lower project viability.
5. Regulatory alignment vs commercial outcome: While the policy framework aligns with regulatory categories, commercial outcomes remain inequitable across generators.

What technological and operational solutions already exist but remain underused?

1. Reactive power management technologies: Devices such as STATCOMs and advanced reactive-power equipment can stabilise voltage fluctuations and increase grid utilisation.
2. Grid support equipment: Modern renewable plants increasingly include Static VAR generators and harmonic filters, enabling improved system stability.
3. Dynamic security assessment: Advanced grid operators globally employ real-time contingency management and probabilistic risk evaluation to improve utilisation.
4. Adaptive operational frameworks: Flexible operational protocols allow higher transmission utilisation while maintaining reliability.
5. Global best practices: Many advanced grids have moved beyond static security frameworks to dynamic grid management systems.

What institutional reforms are necessary to improve renewable grid integration?

1. Expanded grid mandate: The national grid operator must balance both stability and infrastructure utilisation within safe operational limits.
2. Performance-based evaluation: Grid performance metrics should include efficiency indicators alongside reliability indicators.
3. Proportional curtailment mechanisms: Curtailment in constrained regions should be distributed proportionally across generators rather than targeting specific access categories.
4. Dynamic GNA reallocation: Unused transmission capacity should be reallocated in real time through transparent operational protocols.
5. Automatic review mechanisms: Major transmission assets should undergo automatic operational reviews if utilisation falls below expected capacity.
6. Transparency in grid governance: Public disclosure of performance assessments can strengthen accountability and stakeholder confidence.

Conclusion

India’s renewable energy transition cannot succeed solely through capacity addition or infrastructure expansion. The Rajasthan example demonstrates that institutional governance, grid operation practices, and regulatory accountability are equally critical. Ensuring that transmission infrastructure operates efficiently, equitably, and transparently will determine whether India’s clean energy expansion results in actual electricity generation or stranded renewable capacity. Aligning planning, regulation, and operations is therefore essential to build a credible and resilient renewable energy system.

PYQ Relevance

[UPSC 2022] Do you think India will meet 50 percent of its energy needs from renewable energy by 2030? Justify your answer. How will the shift of subsidies from fossil fuels to renewables help achieve the above objectives? Explain.

Linkage: This PYQ is directly linked to India’s renewable transition challenges, including grid integration, transmission constraints, and policy reforms.