Reports & Indexes

India to Need 888 GWh of Energy Storage by 2035-36, Says IESA Report at IESW 2026

By TestNeeti Editorial TeamPublished Wednesday, 8 July 2026 2 min readSource: Business StandardArticle 9 of 20

India will require 888 GWh of energy storage system (ESS) capacity by 2035-36, a massive jump from the current ~1 GWh scale, according to the India BESS Market Review released by the India Energy Storage Alliance (IESA) and Customized Energy Solutions (CES) at India Energy Storage Week (IESW) 2026 in New Delhi. The projected 888 GWh comprises 321 GWh of battery energy storage systems (BESS) and 567 GWh of pumped storage projects (PSP). Storage is seen as critical to integrate India's rising renewable energy and stabilise the grid against day-night solar variability. The report warned that financing remains the biggest hurdle. Officials noted India's peak power demand has already touched 271 GW against about 284 GW of available generation capacity.

Key Facts & Details

9 points

1
India will need 888 GWh of energy storage capacity by 2035-36, up from about 1 GWh today, per the India BESS Market Review.
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The report was released by the India Energy Storage Alliance (IESA) and Customized Energy Solutions (CES) at India Energy Storage Week (IESW) 2026 in New Delhi.
3
The 888 GWh comprises 321 GWh of battery storage (BESS) and 567 GWh of pumped storage projects (PSP).
4
Energy storage is vital to integrate rising renewable energy and manage day-night solar variability on the grid.
5
The report flagged financing as the biggest hurdle to scaling storage capacity.
6
India's peak power demand has already reached 271 GW against about 284 GW of available capacity.

Deep Dive

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Battery energy storage systems (BESS) store electricity chemically, while pumped storage projects (PSP) store energy as water pumped to higher reservoirs.
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Storage helps shift surplus daytime solar power to meet evening peak demand, reducing grid stress and curtailment.
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The scale-up is central to India's clean-energy transition and its non-fossil capacity ambitions.

Exam Focus

According to the India BESS Market Review released at IESW 2026, what energy storage capacity will India need by 2035-36?

Exam Relevance & Angle

Report-based figures are high-yield reports & indices GA, tested on the publisher (IESA / CES), the event (IESW 2026), and the headline number (888 GWh by 2035-36, split into 321 GWh BESS + 567 GWh PSP). It links directly to India's renewable-integration and grid-stability challenges.

Target Exams

SBI POIBPS PORBI Grade BSSC CGLRRB NTPCUPSC CSEState PCS

Background & Context

Energy storage systems (ESS) store electricity for later use, smoothing the mismatch between variable renewable generation (like solar, which peaks midday) and demand (which often peaks in the evening). The two main forms are battery energy storage systems (BESS), which store energy electrochemically, and pumped storage projects (PSP), which pump water uphill when power is cheap and release it through turbines at peak times. The India Energy Storage Alliance (IESA) is an industry body promoting energy storage, e-mobility and green hydrogen, and it hosts the annual India Energy Storage Week (IESW). Scaling storage is essential for India to integrate its growing renewable capacity while maintaining a stable, reliable grid.