PIB TrackerIndia has 7.43 GW of pumped storage and has identified 345 GW of it
The storage arithmetic behind 500 GW of non-fossil capacity: 73.93 GW of storage needed by 2031-32, of which 26.69 GW pumped hydro - against 7.43 GW running today.
What happened
- India crossed 300 GW of non-fossil installed capacity by July 2026, added about 55.29 GW of non-fossil capacity in 2025-26, and targets 500 GW by 2030.
- The CEA projects 73.93 GW of storage by 2031-32 - 26.69 GW pumped storage and 47.24 GW batteries; batteries serve short-duration needs, pumped storage long-duration shifting.
- Current position as of August 2026: 7.43 GW operational across 10 projects, 15.87 GW across 11 projects under construction, and 10.40 GW across 8 projects concurred or appraised.
- Potential: 320 projects, 345.38 GW - 62 on-stream (56.67 GW) and 258 off-stream (288.71 GW), with the policy preference for off-stream schemes away from perennial rivers.
- Regional potential: Western 129.72 GW (Maharashtra 67.36, Gujarat 33.36), Southern 97.76, Eastern 53.41 (Odisha 41.53), Northern 50.32, North Eastern 14.18; 100.81 GW mapped for commissioning by 2035-36.
For Prelims
- How pumped storage works: surplus electricity pumps water from a lower to an upper reservoir, storing potential energy; releasing it through turbines generates power at peak. It consumes more electricity than it returns - round-trip efficiency is typically 70 to 80 per cent - so its value is in shifting energy in time, not creating it.
- The three configurations: on-stream has both reservoirs on a watercourse; off-stream open-loop has one; off-stream closed-loop has neither. Closed-loop schemes clear environmental appraisal faster because they do not interrupt river flow or fish passage.
- Pumped storage versus batteries: batteries respond in milliseconds and suit frequency regulation and peak shaving; pumped storage stores for six to twelve hours or more and lasts forty years or longer. A grid with high solar share needs both - one for the second, one for the evening.
- The duck curve: heavy midday solar generation depresses net demand and then leaves a steep evening ramp when the sun sets and household demand peaks. Long-duration storage exists to flatten that ramp.
- Who appraises: the Central Electricity Authority gives concurrence to hydro-electric schemes above a threshold capacity after examining topography, geology, hydrology, seismicity and transmission connectivity - the step that converts "identified potential" into a project.
- Policy support: the Ministry of Power’s 2023 guidelines on pumped storage promotion, waiver of inter-state transmission system charges for storage projects commissioned within a window, and energy storage obligations on distribution companies are the instruments pulling this pipeline forward.
- Why the Western Ghats dominate the potential: steep river gradients give large head over short horizontal distance, which is exactly what pumped storage needs - and the same catchments carry ecologically sensitive area designations under the Gadgil and Kasturirangan reports.
- Non-fossil versus renewable: the 300 GW and 500 GW figures are non-fossil capacity, which includes large hydro and nuclear alongside solar, wind and bio - a wider measure than renewable capacity alone.
For UPSC: The energy transition question is now a storage question, and this release supplies every number needed to answer it - requirement, pipeline, potential and regional distribution. Deploy it on renewable integration and grid stability, on the 500 GW non-fossil target, on hydropower and its environmental trade-offs, and on infrastructure appraisal.
What it is NOT: No cost figures - neither per megawatt for pumped storage nor against batteries, which is the comparison that decides the mix. No tariff or storage charge, no mention of who pays for storage in a system where distribution companies buy on lowest-cost merit order, and no round-trip efficiency figure. Nothing on the ten operational projects by name or age, nothing on execution time - typically five to eight years for a pumped storage project, which is what makes the 2031-32 target tight - and nothing on the displacement, forest clearance or Western Ghats sensitivity that the on-stream share of the pipeline implies.
For Mains
Syllabus: GS3.9 · GS3.14 · Linkage L1
Anchor
India has 7.43 GW of operational pumped storage against a Central Electricity Authority requirement of 26.69 GW by 2031-32, with 26.27 GW in the pipeline and 345.38 GW of potential identified across 320 sites.
Substantiation (data)
Of the 73.93 GW of storage projected for 2031-32, batteries account for 47.24 GW and pumped storage 26.69 GW. Operational capacity is 7.43 GW across ten projects, with 15.87 GW under construction and 10.40 GW concurred or appraised. The identified potential splits into 62 on-stream projects of 56.67 GW and 258 off-stream projects of 288.71 GW, with the Western Region at 129.72 GW, the Southern at 97.76, Eastern 53.41, Northern 50.32 and North Eastern 14.18. The Authority maps 100.81 GW for commissioning by 2035-36.
Position
The honest reading is that the pipeline just about matches the target and nothing more. 15.87 GW under construction plus 10.40 GW appraised is 26.27 GW against a 26.69 GW requirement for 2031-32 - no margin for a project that slips, and pumped storage projects routinely take five to eight years. The 345 GW of identified potential is therefore not reassurance; identification is a desk exercise, and the binding constraints are appraisal, land, forest clearance and transmission.
Counterpoint
Against that, the policy direction is right in two respects. Allocating the larger share of storage to batteries recognises that they can be built where the power is needed and within a year, while pumped storage waits for geology; and the stated shift towards off-stream closed-loop schemes is the correct ecological choice, since 258 of the 320 identified sites avoid perennial rivers. A plan that leaned on on-stream projects in Western Ghats catchments would not survive appraisal.
Way forward
Publish the cost per megawatt for pumped storage against batteries, the average execution time of the ten operational projects, and the status of each of the eleven under construction. If storage is to be built at this pace, the energy storage obligation on distribution companies and the transmission charge waiver window are the two levers that need to be made firm.
Conclusion
A technology India has used since the 1980s, now reclassified as the backbone of a renewable grid - with 7.43 GW running, 26.27 GW being built, and a target that leaves almost no room for delay.
Deploys into: Renewable integration and grid stability · The 500 GW non-fossil target · Hydropower and environmental trade-offs · Infrastructure appraisal and execution
PIB Backgrounder · 2026-10-19 · PRID 2324992 · PIB source ↗