India’s Green Energy Corridor Phase III has moved from planning to implementation after the Union Cabinet approved a ₹1,86,405 crore programme on September 30, 2026. The scheme is designed to strengthen intra-state transmission networks and enable evacuation of up to 135 GW of renewable energy, with completion targeted by FY2032-33.
The scale of the physical infrastructure is significant. GEC-III is expected to add 51,126 circuit km of transmission lines and 2,28,903 MVA of transformation capacity. The transmission component accounts for ₹1,36,378 crore, while another ₹50,000 crore is allocated for 50 GWh of battery energy storage systems.
The inclusion of storage is one of the scheme’s most important features. The planned 50 GWh of BESS can be deployed at renewable energy developer or generator locations, or at other grid-relevant points. The objective is to address renewable intermittency, congestion and peak-hour curtailment while making stored electricity available during non-solar hours.
The Centre has committed ₹54,082 crore in financial support. The assistance is intended to reduce the transmission-cost burden, while the storage component includes viability gap funding support. The government expects the wider programme to support the development of renewable generation as India moves toward its longer-term non-fossil capacity targets.
However, the size of the approval does not by itself guarantee timely renewable power evacuation. The execution structure places State Transmission Utilities at the center of implementation. Greenfield transmission projects will be awarded through tariff-based competitive bidding, while brownfield upgrades and network-strengthening works will follow a cost-plus model. Transmission Service Providers selected through competitive bidding will operate under a Build, Own, Operate and Maintain framework.
This makes project coordination particularly important. Transmission corridors require land access, right-of-way permissions, statutory clearances, equipment procurement and construction across multiple locations. Earlier parliamentary reviews have identified land acquisition, right-of-way issues and tendering delays as recurring constraints in the Green Energy Corridor programme. The Standing Committee on Energy specifically noted delays in GEC phases and identified right-of-way compensation as a major issue affecting transmission-line construction.
The challenge is not limited to the Green Energy Corridor. An assessment of India's broader transmission pipeline found that around one-quarter of transmission projects nationwide were facing delays of at least one year, with right-of-way issues remaining a major bottleneck. This highlights why GEC-III will require execution to progress alongside renewable generation rather than after projects are ready to connect.
The experience of GEC Phase II also provides an important reference point. MNRE's scheme covers approximately 10,750 circuit km of transmission lines and 27,500 MVA of substations to support around 20 GW of renewable generation across seven states. Its implementation through State Transmission Utilities demonstrates the scale of coordination already required for intra-state renewable evacuation.
GEC-III therefore represents more than an expansion of transmission capacity. It brings generation evacuation, transformation capacity and battery storage into a single infrastructure programme. This combination could help reduce the gap between renewable capacity being built and the grid's ability to absorb and move that electricity.
For renewable developers, the critical milestones will be project awards, land and right-of-way clearances, equipment availability, construction progress and timely commissioning of associated substations and transmission lines. For BESS developers, the eventual procurement and deployment structure will determine how quickly the proposed 50 GWh storage capacity becomes an operational grid resource.
GEC-III has the financial scale and infrastructure targets to materially strengthen India’s renewable power system. Its real test, however, will be whether thousands of kilometres of transmission infrastructure and large-scale storage can move from Cabinet approval to commissioned assets within the FY2032-33 timeframe.