India’s Union Cabinet has approved the Green Energy Corridor Phase-III (GEC-III) scheme with a total outlay of ₹1,86,405 crore, combining intra-state transmission infrastructure with 50 GWh of battery energy storage systems (BESS) to support the evacuation and integration of up to 135 GW of renewable energy across states and Union Territories.
The Cabinet approved the scheme on September 30, 2026. GEC-III is targeted for completion by FY2032-33 and is designed to strengthen India’s intra-state transmission system while addressing renewable-energy intermittency, transmission congestion and peak-hour curtailment.
The development comes as India expands renewable generation capacity and seeks to build the transmission and storage infrastructure needed to integrate increasing volumes of variable solar and wind power into the electricity system. The Hindu reported the Cabinet decision and linked the initiative to India’s renewable-energy expansion plans.
The government said the central financial assistance will help offset intra-state transmission charges, with the stated objective of keeping power costs lower for end users.
The scheme is intended to strengthen transmission networks within states and Union Territories so that renewable electricity generated in different regions can be evacuated and integrated into the wider power system.
50 GWh battery storage added to Green Energy Corridor
A key feature of GEC-III is the inclusion of a dedicated battery-storage component.
The scheme provides for 50 GWh of Battery Energy Storage Systems, which can be deployed at renewable energy developer or generator sites or at other locations considered important for grid flexibility.
Battery storage can allow electricity generated during periods of high renewable output to be retained and subsequently supplied when generation falls or demand increases. The government has therefore incorporated storage into the transmission programme rather than treating grid infrastructure and renewable generation as separate requirements.
Greenfield projects to use competitive bidding
The implementation structure will distinguish between new transmission infrastructure and upgrades to existing networks. All greenfield projects under the intra-state transmission component will be implemented through Tariff Based Competitive Bidding (TBCB).
Under the proposed framework, Transmission Service Providers will participate through a Build-Own-Operate-Maintain (BOOM) model. Existing transmission infrastructure requiring network strengthening or brownfield upgrades will instead be implemented on a Cost Plus Basis (CPB).
State Transmission Utilities will serve as the overall implementing agencies. The combination of competitive bidding for new infrastructure and cost-based execution for brownfield works is intended to provide separate implementation routes for new transmission assets and upgrades to existing networks.
GEC-III supports 900 GW non-fossil capacity target
The government has linked the programme to its longer-term target of reaching 900 GW of installed non-fossil capacity by 2035.
According to the PIB, the scheme is also expected to support long-term energy security and reduce the carbon footprint associated with the power system. The programme is expected to generate employment across power, manufacturing and construction, while BESS deployment and manufacturing are expected to create additional activity in the domestic energy-storage sector.
The Cabinet decision also comes against India’s broader target of 500 GW of non-fossil fuel-based installed electricity capacity by 2030, a target highlighted in reporting on the Cabinet approval.
Transmission and storage become central to renewable expansion
The approval reflects a shift in India’s renewable-energy infrastructure requirements from generation capacity alone towards the wider electricity system needed to absorb that generation.
Solar and wind output varies according to weather and time of day. As renewable capacity increases, transmission constraints can prevent available electricity from reaching demand centres, while periods of high solar generation can create additional pressure on the grid.
GEC-III addresses these issues through two linked investments: expanding intra-state transmission capacity and adding battery storage that can provide flexibility when renewable generation and electricity demand do not coincide.
For renewable developers, stronger state-level transmission networks could also be important for connecting new generation projects and moving electricity from resource-rich areas into the grid.
Bioenergy Business Analysis
Although GEC-III is primarily a transmission and storage programme rather than a bioenergy scheme, its implications extend across India’s broader renewable-energy market. A grid capable of accommodating larger volumes of variable renewable electricity can create the infrastructure foundation for a more diversified low-carbon power system in which biomass, biogas, solar, wind and other renewable sources can operate alongside storage and flexible demand.
The 50 GWh storage allocation is particularly relevant to the evolution of India’s renewable-energy system. Storage can address some of the timing mismatch between renewable generation and electricity demand, while expanded intra-state transmission can reduce constraints on moving power within states and Union Territories. However, the effectiveness of the programme will ultimately depend on project execution, transmission planning, procurement timelines, interconnection coordination and the timely deployment and operation of the planned storage assets.
For the clean-energy industry, the scheme also creates a substantial infrastructure pipeline spanning transmission equipment, substations, grid technologies, battery systems, construction and long-term operations and maintenance. The scale of the programme means that implementation progress through FY2032-33 will be an important indicator of how quickly India’s electricity infrastructure is adapting to its expanding non-fossil generation base.
