India's Battery Energy Storage System (BESS) sector is on course for explosive growth, with a projected compound annual growth rate of 91 per cent between FY26 and FY32, according to a report by Nuwama. The expansion is being driven by the country's urgent need for renewable energy integration, grid stabilisation, and round-the-clock power supply across its rapidly electrifying economy.

Capacity Surge on the Horizon

The Nuwama report estimates that cumulative BESS capacity will leap from 6.3 GWh in FY26 to 302 GWh by FY32, with annual additions scaling from 5.7 GWh to 56 GWh over the same period. These figures align broadly with projections from the Central Electricity Authority (CEA), which pegs national BESS demand at 236 GWh by FY32 and a staggering 1,840 GWh by 2047 — signalling that the current growth phase is merely the opening chapter of a far larger infrastructure buildout.

Import Dependence and the Localisation Opportunity

A significant structural challenge tempers the optimism: currently, 89 per cent of India's BESS requirements are met through imports, leaving the sector exposed to global supply chain disruptions. However, falling battery costs — combined with an anticipated policy framework modelled on the Approved List of Models and Manufacturers (ALMM) scheme — could meaningfully accelerate domestic manufacturing, localisation, and adoption.

Lithium-ion technology dominates the market with a 98 per cent share, but the report flags sodium-ion technology and the global China+1 sourcing diversification trend as credible opportunities for India to carve out a distinct manufacturing niche.

Manufacturing Economics and Margins

The economics of domestic BESS production reveal differentiated margins across end-markets. The commercial, industrial, and retail segments yield spreads of $18 to $23 per kilowatt-hour, translating into EBITDA margins of 17 to 20 per cent. An integrated BESS facility is estimated to generate an internal rate of return of 12 per cent — modest but stable.

Domestic production carries a distinct cost advantage, underpinned by a capital expenditure base of $80 million per gigawatt-hour, production-linked incentive (PLI) support of ₹181 billion for 50 GWh, and competitive labour costs. The report argues that with sufficient policy backing, scale, and localisation, integrated BESS manufacturing could evolve into an export-led growth engine.

Revenue Impact on Listed Players

For listed solar and BESS companies, the financial implications are substantial. BESS integration is estimated to contribute between 17 and 60 per cent of company revenues by FY28. Premier stands out with an opportunity valued at ₹103 billion, representing 60 per cent of its projected FY28 revenue, while Vikram is positioned for a 54 per cent revenue uplift from BESS. Despite these projections, the report cautions that most listed solar and BESS players have yet to record meaningful BESS contributions in their earnings, suggesting that the market re-rating, when it comes, could be sharp.

With policy momentum building and global battery costs on a structural downtrend, India's BESS trajectory will likely depend on how quickly the government formalises the localisation framework and whether domestic manufacturers can scale ahead of the demand curve.