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India’s renewable energy transition is increasingly constrained by transmission infrastructure rather than generation capacity. Examine the challenges facing India’s power transmission sector and suggest reforms needed to build a future-ready electricity grid. 15 Marks (GS-3, Economy)
Why in News?
India added over 45 GW of renewable energy capacity in 2025, making solar and wind the cheapest sources of electricity. However, more than 50 GW of renewable energy projects remain stranded due to inadequate transmission infrastructure, highlighting the urgent need for grid modernization and expansion.
Introduction
India’s clean energy transition has reached a critical stage where the challenge is no longer generating renewable power but transmitting it efficiently. As renewable energy capacity grows rapidly, strengthening and modernizing the transmission network has become essential for achieving energy security, climate goals, and sustainable economic growth.
Current Status of India’s Renewable Energy Sector
1. Rapid Expansion of Renewable Capacity
- India has approximately 250 GW of installed renewable energy capacity with another 100 GW under construction.
2. Competitive Renewable Energy Costs
- Solar and wind energy have emerged as India’s cheapest sources of electricity.
- Falling battery prices are enabling affordable round-the-clock clean power.
3. Rising Future Energy Demand
- India may require nearly 2,000 GW of renewable energy by 2050 to support industrialization, urbanization, and transport electrification.
4. Growing Grid Stress
- The pace of renewable energy deployment is significantly faster than transmission infrastructure development.
Why Has Transmission Become the Major Bottleneck?
1. Mismatch Between Generation and Transmission Timelines
Renewable energy projects such as solar and wind farms can be set up within 12–18 months, while transmission lines often take 3–5 years to become operational. This creates a situation where power generation capacity is ready, but evacuation infrastructure is not.
2. Land Acquisition and Right-of-Way Issues
Building new transmission corridors requires large stretches of land and right-of-way permissions, which often face legal disputes, environmental concerns, and local resistance. These challenges significantly delay project execution.
3. Regulatory and Administrative Delays
Transmission projects require approvals from multiple government agencies at the central and state levels, increasing implementation timelines. Reflecting these delays, only about 8,830 circuit kilometres (ckm) of transmission lines were added against a target of 15,253 ckm in the previous fiscal year, while over 50 GW of renewable energy capacity remains stranded awaiting grid connectivity.
4. Underutilisation of Existing Infrastructure
Many transmission assets remain underused because renewable energy generation is intermittent and storage capacity is limited. Outdated transmission technologies also restrict the amount of power that existing lines can carry.
5. Rising Renewable Energy Integration Needs
The growing share of solar and wind energy introduces variability into the power system, requiring greater grid flexibility and balancing mechanisms. Without adequate storage and smart-grid solutions, integrating large volumes of renewable energy becomes difficult.
Challenges in India’s Transmission Sector
1. Inadequate Transmission Infrastructure
The expansion of transmission networks has not kept pace with the rapid growth of renewable energy capacity. As a result, several renewable energy projects remain stranded due to the lack of adequate evacuation infrastructure.
2. High Investment Requirements
India’s ambitious clean energy transition will require massive investments in transmission infrastructure, estimated at over $100 billion in the coming decade. Mobilising such large-scale financing remains a significant challenge.
3. Technology Adoption Gaps
A substantial part of India’s transmission network still relies on conventional conductors and outdated technologies. This limits the grid’s ability to carry higher volumes of electricity efficiently.
4. Grid Integration Challenges
The intermittent nature of solar and wind power creates fluctuations in electricity supply. Integrating large-scale renewable energy therefore requires advanced storage systems, smart grids, and balancing mechanisms.
5. Land and Environmental Constraints
Developing new transmission corridors often faces delays due to land acquisition issues, environmental clearances, and local opposition. These constraints increase project costs and implementation timelines.
6. Planning and Coordination Deficits
Poor coordination between renewable energy developers, transmission utilities, and regulatory agencies leads to infrastructure mismatches. The absence of integrated planning creates bottlenecks in connecting new renewable projects to the grid.
Important Committees, Reports and Initiatives
1. National Electricity Plan (CEA)
Prepared by the Central Electricity Authority, the plan outlines India’s long-term electricity demand and infrastructure requirements. It emphasizes large-scale transmission expansion to facilitate renewable energy integration and ensure grid reliability.
2. Green Energy Corridor Programme
The programme aims to create dedicated transmission infrastructure for evacuating power generated from renewable energy sources. It helps connect renewable-rich regions with demand centres and reduce transmission bottlenecks.
3. National Smart Grid Mission (NSGM)
Launched to modernize India’s power sector, the mission promotes automation, digitalization, and smart-grid technologies. It seeks to improve grid efficiency, reliability, and integration of renewable energy.
4. National Electricity Policy
The policy provides the overall framework for the development of the power sector in India. It advocates reliable, affordable, and sustainable electricity access through efficient transmission and distribution systems.
5. National Green Hydrogen Mission
The mission aims to make India a global hub for green hydrogen production and exports. It highlights the need for a robust transmission network to support the large-scale renewable energy required for green hydrogen generation.
Policy Reforms Needed
1. Promote Storage-Linked Renewable Projects
Integrating battery storage systems with solar and wind projects can store excess electricity and supply power during peak demand periods. This improves grid utilization and reduces renewable energy curtailment.
2. Modernise Existing Transmission Infrastructure
Adopting high-temperature low-sag (HTLS) conductors and smart-grid technologies can significantly increase transmission capacity. This allows more electricity to be transmitted through existing corridors without acquiring additional land.
3. Repurpose Underutilised Coal Corridors
Transmission infrastructure connected to ageing and underutilised coal plants can be leveraged for renewable energy evacuation. This optimizes existing assets and reduces the need for costly new transmission lines.
4. Develop Renewable Energy Zones
Renewable energy parks should be planned alongside transmission infrastructure to ensure timely grid connectivity. Integrated development can minimize delays and improve project viability.
5. Strengthen Long-Term Grid Planning
Transmission planning must be aligned with future renewable energy targets, industrial growth, and rising electricity demand. This will help avoid infrastructure bottlenecks and stranded generation assets.
6. Accelerate Regulatory Approvals
Simplifying land acquisition procedures, environmental clearances, and inter-agency approvals can significantly reduce project delays. Faster approvals will enable timely expansion of transmission networks.
7. Encourage Public-Private Participation
Greater private sector participation can mobilize additional capital and technological expertise for grid modernization. Public-private partnerships can accelerate infrastructure development and improve efficiency.
8. Future-Proof New Transmission Projects
New transmission corridors should be designed using advanced technologies capable of handling higher renewable energy penetration. This will ensure the grid remains resilient and efficient as India’s clean energy capacity expands.
9. Deploy Battery Energy Storage Systems (BESS) at Pooling Stations
Installing short-duration Battery Energy Storage Systems (BESS) at regional pooling stations can absorb excess midday solar generation and release it during peak demand. This offers a faster and cost-effective solution to grid congestion without requiring immediate large-scale transmission expansion.
Conclusion
India’s clean-energy transition now depends as much on grid readiness as on renewable energy generation. Strengthening transmission infrastructure, modernising the grid, and improving storage capacity will be crucial to achieving energy security and net-zero ambitions.