Every number on this site comes from a document I can point to:
Official papers first: Terms of Reference, clearance letters, Expert Appraisal and Forest Advisory Committee minutes, EIA reports, forest orders, gazettes and Central Electricity Authority records, mostly from the Parivesh portal.
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9.6 ReportedDerived on this site“… 13.48 million cubic metres respectively, supported by concrete gravity dams. It is designed to generate peak power for 6.39 hours daily and pump water back to the upper reservoir using 1,685 MW over 7.03 hours. The total land requirement is 293.50 hectare…”1,500 MW × 6.39 h ≈ 9.6 GWh.Power Peak Digest
Location
18.2591°N, 73.4813°E (approx)Documented“56 Eas 18°15'58. 73°30'1.00”Approximate location; the source gives a point near the project, not its dam coordinates.EAC 45th meeting minutes, 19 Dec 2025 (Pane EC, item 45.3), page80 · 19 December 2025
District
Raigad, Pune, Mahad, Velhe
Notes
Upper dam ~3 km from Adani's Warasgaon upper dam; no cumulative assessment.
Expert Appraisal Committee (EAC)The central committee of experts that recommends ToR and EC for river valley and hydro projects, including PSPs.More in glossary → sub-committee EAC site visitAn inspection by EAC members. Since Sep 2024 the EAC wants one for every Western Ghats PSP before EC.More in glossary → 27–28 Jun 2025, report considered 12 Sep 2025, Environmental clearance (EC)The environment ministry's permission for a project, given after the EIA and public hearing, with conditions attached.More in glossary → recommended 19 Dec 2025 (per SANDRP).
The minutes of the 39th EAC meeting (12 Sep 2025) have no Pane item, so the site-visit report must have been taken up at another meeting.
Coords: centre of the four boundary points in the EAC 45th minutes (item 45.3).
EAC recommends EC for JSW's Pane Pumped storage project (PSP)Two reservoirs at different heights: water is pumped up when power is cheap and released through turbines when power is needed.More in glossary →
Details and documents
66.91 haDocumented“…d pump water back to the upper reservoir using 1,685 MW over 7.03 hours. The total land requirement is 293.50 hectares, including 66.91 hectares of forest land for which forest clearance has been sought. The estimated project cost is Rs. 9,446.15 crore, with Rs. 39…”Power Peak Digest of forest. SANDRP's letter to the EAC says its upper dam is 'barely 3 kmDocumented“· Upper Adani Dam is barely 3 kms from the proposed Upper Dam of 1500 MW Pane Pumped Storage by JSW.”SANDRP: letter to the EAC on the Adani dams · 29 November 2024s' from Adani's Warasgaon upper dam; there is no cumulative assessment.
An EAC sub-committee visited the JSW Pane site on 27–28 Jun 2025 under the Western Ghats / SahyadriThe 1,600 km mountain chain along India's west coast: older than the Himalaya, a UNESCO World Heritage site and a global biodiversity hotspot.More in glossary → site-visit rule. The EAC considered the report on 12 Sep 2025 and recommended EC on 19 Dec 2025.
Cumulative impact assessmentA study of the combined effect of all projects in one river basin or landscape, rather than one project at a time.More in glossary → and carrying-capacity studies show what many projects do to one basin together.
⚠️ What happened
None exists for the Kal, Savitri, Pej, Kalu or Koyna basins. Pane's upper dam is ~3 kmDocumented“· Upper Adani Dam is barely 3 kms from the proposed Upper Dam of 1500 MW Pane Pumped Storage by JSW.”SANDRP: letter to the EAC on the Adani dams · 29 November 2024 from Warasgaon's; residents say more projects are planned within 15–20 km of Karjat.