India’s battery energy storage system (BESS) market is witnessing explosive growth, with installations soaring from just 51 MWh in 2023 to over 341 MWh in 2024, a more than sixfold increase. By the end of 2024, the country’s cumulative battery storage capacity reached approximately 442 MWh, showing the rising demand for renewable energy solutions.

Largest BESS projects in India include NTPC’s Thermal Stations BESS (4,000 MWh), ReNew Andhra Pradesh Hybrid BESS (2000 MWh), JSW Energy Rajasthan BESS (RVUNL) (500 MWh), H.G. Infra Engineering – Gujarat GUVNL Phase IV BESS Project (500 MWh), JSW Energy Kerala BESS (SECI) (500 MWh). These projects are at the forefront of this energy transition, supported by government initiatives like the Viability Gap Funding (VGF) scheme.

In this blog, we explore the top 7 biggest battery energy storage projects in India in 2025, highlighting their capacities, technologies, and strategic importance in supporting grid stability and renewable energy integration.

List of Top 7 Battery Energy Storage Projects in India 2025 (according to capacity)

NTPC Thermal Stations BESS

NTPC Thermal Stations BESS is the largest upcoming battery energy storage system project in India, with a total capacity of 4,000 MWh (1,700 MW). NTPC is advancing India’s energy storage capabilities by inviting bids for a large-scale battery energy storage system at its thermal power plants in Uttar Pradesh.

The project aims to deploy a total of 1,700 MW / 4,000 MWh capacity across 11 locations, split between 300 MW / 1,200 MWh of 4-hour storage and 1,400 MW / 2,800 MWh of 2-hour storage. These facilities will connect at 400 kV, 220 kV, or 132 kV substations, depending on the site.

The battery systems will offer a 12-year service life and are expected to handle two full charge-discharge cycles daily. An annual maintenance contract covering the entire service period is included as part of the scope of work. Each system will integrate advanced technologies like Battery Management Systems (BMS), Energy Management Systems (EMS), SCADA, and fire safety protocols.

These units will be integrated with existing thermal power infrastructure and must maintain rated capacity at commissioning and through the first year, while adhering to defined limits on degradation in capacity and efficiency. The bidding process is currently open to domestic EPC (Engineering, Procurement, and Construction) contractors.

ReNew Andhra Pradesh Hybrid BESS

ReNew has started building one of India’s largest hybrid renewable energy projects in Anantapur, Andhra Pradesh. The project will have a total installed capacity of 2.8 GW, comprising 1.8 GWp of solar and 1 GW of wind generation, supported by a 2 GWh battery energy storage system (BESS). The facility is being developed with an investment of INR 22,000 crore and will supply power for up to four peak hours daily.

In the first phase, ReNew will set up 587 MWp of solar and 250 MW of wind capacity, along with a 415 MWh BESS. Power purchase agreements for this initial phase have already been signed, while the remaining capacity will be rolled out in subsequent phases.

The project aligns with India’s Make in India mission, using 100% Made-in-India solar panels from ReNew’s manufacturing units in Jaipur, Rajasthan, and Dholera, Gujarat. It will feature advanced solar tracking systems to maximize energy generation and employ waterless robotic cleaning for panels, helping save water.

JSW Energy Rajasthan BESS (RVUNL)

JSW Renew Energy Thirty Seven, a subsidiary of JSW Energy, has secured a battery energy storage purchase agreement (BESPA) with Rajasthan Rajya Vidyut Utpadan Nigam Ltd (RVUNL) for a 250 MW / 500 MWh standalone battery energy storage system (BESS) in Rajasthan. The project will operate under a build-own-operate model and receive viability gap funding to support its economic feasibility.

The 12-year agreement will allow RVUNL to procure energy storage services at a tariff of INR 2,24,000 per MW per month. This project adds to JSW Energy’s growing energy storage portfolio, which now totals 29.3 GWh. Of this, 2.9 GWh comes from battery storage and 26.4 GWh from pumped hydro storage. The company is advancing toward its target of achieving 40 GWh of energy storage by 2030.

The Rajasthan BESS forms part of JSW Energy’s broader clean energy strategy. The company is actively expanding its renewable energy footprint, executing 12.8 GW of ongoing power projects and aiming for a total generation capacity of 30 GW by 2030.

H.G. Infra Engineering – Gujarat GUVNL Phase IV BESS Project

H.G. Infra Engineering has been awarded a 250 MW portion of Gujarat Urja Vikas Nigam Limited’s (GUVNL) Phase IV Battery Energy Storage System (BESS) project, contributing to the total 400 MW / 800 MWh capacity. The tender, launched in September 2024 and concluded within two months, has set a new benchmark for BESS tariffs in India.

Under this phase, H.G. Infra secured its allocation at a quoted tariff of INR 2.26 lakh per MW per month. The project benefits from a 30% Viability Gap Funding structure aimed at promoting grid stability and supporting renewable energy integration, particularly in states with high solar penetration. The tariff represents a significant cost reduction, with the lowest bid in the auction being INR 2.26 lakh/MW/month, 40% lower than the previous INR 3.72 lakh/MW/month tariff.

The project design ensures scalability, with minimum bid sizes of 100 MWh and increments of 50 MW / 100 MWh. Each 100 MW / 200 MWh installation requires only 11,000 sq. meters of land, facilitating efficient land use. GUVNL’s partnership with GETCO allows developers to access land on a right-of-use basis at a nominal annual lease rate of INR 1 per plot.

Karnataka KPTCL BESS (Pace Portion)

Pace Digitek has been awarded the largest portion of Karnataka Power Transmission Corporation Limited’s (KPTCL) 500 MW / 1 GWh battery energy storage system (BESS) tender, securing a 250 MW / 500 MWh capacity. The tender, launched in February 2025, aims to enhance grid stability and address fluctuations in power supply and peak demand across Karnataka.

The awarded project will be implemented on a build-own-operate (BOO) model, with Pace Digitek responsible for developing, operating, and maintaining the BESS installations near identified substations in the state. The tariff for the project has been fixed at INR 2.54 lakh (INR 254,000) per MW of nominal power per month, equivalent to approximately USD 2,976/MW/month.

Pan India NVVN BESS (IndiGrid Portion)

IndiGrid 2 has been awarded a 250 MW / 500 MWh capacity in the first phase of NTPC Vidyut Vyapar Nigam’s (NVVN) large-scale battery energy storage system (BESS) auction. The program, backed by viability gap funding (VGF), targets a total capacity of 4,000 MWh to be implemented in multiple phases across India, with this auction marking the initial rollout.

The awarded project will be developed under a build-own-operate framework, with IndiGrid 2 responsible for establishing, operating, and maintaining the BESS. The system must be connected to either the 765 kV Bhadla-III power substation in Rajasthan or the 400 kV Banaskantha (Radhanesda) GIS substation in Gujarat. The project will be integrated with the inter-state transmission system (ISTS), ensuring seamless connectivity with the broader grid infrastructure.

The tariff and other commercial terms were determined through a competitive bucket-filling approach, where IndiGrid 2 secured the largest share. The battery system will be available to NVVN for on-demand charging and discharging to support grid balancing and energy management. Developers are permitted to choose any suitable storage technology, provided it meets the defined performance criteria for BESS.

JSW Energy Kerala BESS (SECI)

JSW Energy will develop, operate, and maintain a 125 MW / 500 MWh standalone battery energy storage system (BESS) in Kerala under a grid-connected setup. The project is being implemented in partnership with Solar Energy Corporation of India (SECI) and Kerala State Electricity Board (KSEB), with SECI signing the battery energy storage sale agreement and KSEB set to use the system for on-demand charging and discharging to manage grid requirements.

JSW Energy secured the project through a competitive auction by SECI at a tariff of INR 4.41 lakh per MW per month. The project is eligible for viability gap funding, supporting its financial viability while ensuring it can deliver reliable energy storage services to the state.

The BESS will connect to the Mylatti 220 kV substation and is aimed at enhancing grid flexibility and reliability. The development is progressing, with commissioning targeted within 18 months from the date of agreement.

Wrapping up – BESS projects in India

India’s BESS sector is rapidly expanding, driven by the need to integrate renewable energy and improve grid reliability. The market’s momentum reflects growing investor interest and supportive policy frameworks like the VGF program, which now aims to back 30 GWh of storage capacity in its second tranche. Karnataka is leading the charge, accounting for 36% of the total installed BESS capacity, followed by Chhattisgarh (27%) and Gujarat (17%).

Despite challenges such as underbidding, delays in power purchase agreements, and high financing costs, the sector’s pipeline, with 12.8 GWh auctioned capacity between 2022 and May 2025, demonstrates strong intent to scale. The projects, including some of the largest BESS installations in the country, are important to ensuring firm, flexible, and reliable renewable power.

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