Context
- In September 2026, the Union Cabinet approved Green Energy Corridor Phase III (GEC-III), with a total project outlay of ₹1,86,405 crore.
- The scheme aims to strengthen state-level electricity transmission networks and deploy battery energy storage systems to integrate renewable energy into the power grid.
What is the Green Energy Corridor?
- The Green Energy Corridor is a transmission infrastructure initiative that connects renewable energy generation centres with the electricity grid and enables power to reach consumers.
- For example, solar plants generate electricity mainly during daylight hours, while demand may remain high after sunset. Transmission lines carry electricity to demand centres, while battery storage can store surplus power for later use.
- It addresses three major problems:
- Intermittency: Solar and wind generation varies with weather conditions.
- Transmission Bottlenecks: Inadequate grid capacity can prevent generated electricity from reaching consumers.
- Curtailment: Renewable electricity generation may need to be reduced when the grid cannot accommodate the available power.
- Key Features of GEC-III
- Completion target: FY 2032–33
- Renewable evacuation capacity: 135 GW
- Battery storage capacity: 50 GWh
- Central financial support: ₹54,082 crore
Two Major Components
- Intra-State Transmission Systems (InSTS)
- Allocation: ₹1,36,378 crore.
- Strengthens transmission lines and substations within states and Union Territories.
- Helps transfer renewable electricity from generation sites to the wider grid and consumers.
- Battery Energy Storage Systems (BESS)
- Allocation: ₹50,000 crore.
- Supports deployment of battery systems with a combined storage capacity of 50 GWh.
- Stores surplus electricity and supplies it during non-solar hours, helping reduce curtailment and improve grid reliability.
How Will the Scheme Be Implemented?
- Greenfield Projects: New transmission infrastructure will be developed through Tariff-Based Competitive Bidding (TBCB) to encourage cost-effective project selection.
- BOOM Model: Under the Build-Own-Operate-Maintain model, selected transmission service providers will build, own, operate and maintain transmission assets.
- Brownfield Projects: Existing transmission networks will be upgraded on a cost-plus basis rather than rebuilt entirely.
- Implementing Agencies: State Transmission Utilities will oversee the intra-state transmission component.
- Financial Support: The Centre will provide ₹54,082 crore to support implementation and help offset transmission charges.
Significance of GEC-III
- Renewable Energy Integration: Enables evacuation of up to 135 GW of renewable energy by reducing transmission bottlenecks.
- Grid Reliability: Battery storage balances fluctuations in renewable generation and supplies electricity when solar and wind power are insufficient.
- Energy Security: Greater use of renewable electricity and storage can reduce dependence on conventional power sources for balancing demand.
- Climate Action: Facilitates greater renewable energy use, supporting India’s efforts to reduce greenhouse gas emissions.
- Economic Growth and Employment: Creates opportunities in transmission infrastructure, battery manufacturing, construction and grid management.
- Supports Clean-Energy Targets: Contributes to India’s broader non-fossil energy expansion goals.
Challenges in Implementation and Way Forward
| Challenges | Way Forward |
| High Capital Costs: Transmission infrastructure and battery storage require substantial investment. | Integrated Planning: Coordinate renewable energy generation, transmission and storage to optimise investments. |
| Land and Right-of-Way Issues: Land acquisition and clearances delay transmission projects. | Faster Project Execution: Streamline clearances and improve coordination among implementing agencies. |
| Battery Storage Constraints: High costs, battery degradation, fire risks and recycling challenges. | Diversified Energy Storage: Combine batteries with pumped-storage hydropower & strengthen recycling facilities. |
| Coordination Gaps: Poor coordination among state utilities, transmission agencies & renewable energy developers. | Institutional Coordination: Strengthen joint planning and coordination among stakeholders. |
| Grid Management Challenges: Variable renewable generation requires accurate forecasting and flexible grid operations. | Smart Grid Management: Adopt better forecasting, demand response and grid-monitoring technologies. |
| Electricity Affordability: Infrastructure costs may increase the financial burden on consumers. | Consumer Protection: Monitor project costs and financial support to ensure reliable electricity at affordable prices. |
Conclusion
Green Energy Corridor Phase III addresses a critical requirement of India’s energy transition: renewable electricity must not only be generated but also transmitted, stored where necessary and delivered reliably. By strengthening intra-state transmission networks and supporting 50 GWh of battery storage, GEC-III can improve grid flexibility and enable greater renewable energy integration.
Frequently Asked Questions (FAQs)
Q1. What is the Green Energy Corridor?
It is a transmission infrastructure initiative that connects renewable energy generation centres to the electricity grid, helping overcome transmission bottlenecks and renewable energy intermittency.
Q2. What are the key targets of Green Energy Corridor Phase III (GEC-III)?
GEC-III targets 135 GW of renewable energy evacuation capacity and 50 GWh of battery storage, with completion planned by FY 2032–33.
Q3. What are the two major components of GEC-III?
The scheme comprises intra-state transmission systems (InSTS), allocated ₹1,36,378 crore, and battery energy storage systems (BESS), allocated ₹50,000 crore.
