India’s Battery Storage Capacity Set to Jump Nearly 50-Fold by 2032

India’s battery energy storage fleet could grow nearly 50-fold by the end of the decade, according to a new analysis from brokerage Nuvama cited by the Economic Times on 12 October. The report projects total battery energy storage system (BESS) installations rising from about 6.3 gigawatt-hours (GWh) today to roughly 302 GWh by fiscal year 2032, implying an annual growth rate of close to 91% as developers race to back up a solar- and wind-heavy grid.

The projection adds to a growing pile of Indian and government forecasts that diverge in scale but agree on direction: storage is shifting from a niche technology to a core piece of grid infrastructure. India’s Central Electricity Authority (CEA) puts the FY2032 figure lower, at 236 GWh, but sees installations climbing to 1,840 GWh by 2047. The India Energy Storage Alliance (IESA), an industry body, estimates the country will need around 888 GWh of storage by 2035-36 to support its renewables build-out. The spread between these numbers reflects different assumptions about policy timing and renewable deployment speed rather than a single agreed baseline.

A new rule is pushing developers to pair generation with storage

Much of the expected acceleration traces back to a planned regulatory shift: from 1 July 2027, new solar and wind projects are set to be required to install batteries alongside their generation capacity, a change aimed squarely at curbing curtailment — the practice of switching off perfectly good solar and wind output because the grid cannot absorb it at that moment. Curtailment has become a visible problem on India’s grid as renewable capacity has outpaced transmission and storage buildout; one tracking group’s snapshot of the January-March 2026 quarter found roughly 72 million units of solar generation and 6 million units of wind generation curtailed nationally, with Gujarat recording the highest losses of any state.

“Energy storage will be one of the defining technologies of India’s energy transition,” said Ashok Jhunjhunwala, an institute professor at IIT Madras, in comments carried alongside the Nuvama figures. The framing fits a broader pattern: India has leaned on a $19 billion Green Energy Corridor expansion approved this year to clear transmission bottlenecks for 135 GW of renewables, and storage is increasingly treated as the other half of that same bottleneck problem — moving power through time rather than through wires.

From a near-zero base to a crowded tender pipeline

India’s installed BESS capacity today remains small in absolute terms — most of the country’s existing long-duration storage is still pumped hydro rather than batteries. But the project pipeline has filled quickly. State procurement agencies, led by the Solar Energy Corporation of India (SECI), have run a steady stream of standalone and co-located BESS tenders over the past two years, detailed on The Daily Energy’s SECI BESS tracker. Other forecasts have used different baselines to describe the same shift: a 2025 academic study estimated India’s storage requirement could reach roughly 97 GW of power capacity by 2032, needing $40-50 billion of cumulative investment, while a separate industry white paper this spring projected cumulative installed capacity — then below 1 GWh — surging past 340 GWh by 2033 under favourable policy conditions. The figures are not directly comparable, since some measure power capacity (GW) and others measure energy capacity (GWh), but all point to the same multi-decade build-out.

Why the grid needs it now

India added renewable capacity faster than it added the grid infrastructure to carry it, and storage is the piece meant to close that gap on the generation side. Battery systems co-located with solar and wind farms can shift output into the evening demand peak, when solar generation has already dropped off but air-conditioning and lighting load is still high — a mismatch that has driven some of the state-level blackout risk reported elsewhere in India’s power sector this year. Separately, forecasters such as DNV expect solar to overtake all other sources as the world’s largest single source of electricity from 2031, a trajectory that makes storage capacity planning in large solar markets like India a global, not just domestic, story.

For now, the Nuvama figures are a brokerage projection rather than a government target, and the 1 July 2027 storage-pairing rule has not yet taken final form. Investors and developers will be watching how the rule is finalised — and how closely the CEA’s own 236 GWh planning figure for FY2032 converges with, or diverges from, Nuvama’s more aggressive 302 GWh call — as the clearest signal of how fast the buildout actually moves.

Sources:

• Economic Times, reporting on Nuvama’s battery energy storage analysis, 12 October 2026 — current capacity, 2032 projection, CAGR, Ashok Jhunjhunwala quote.
• India Central Electricity Authority (CEA) planning estimates — FY2032 and 2047 storage projections.
• India Energy Storage Alliance (IESA) — 2035-36 storage requirement estimate.
• CREA National Energy Snapshot, Q4 FY26 (January-March 2026) — solar and wind curtailment figures.

Illustrative image. Photo: Kecko from Eastern Switzerland, CC BY 2.0, via Wikimedia Commons — source