Why in news?
Tree felling for Torrent Power's Saidongar-1 project has drawn opposition from environmental groups and political leaders in Maharashtra's Karjat taluka. Reports published on 24 October describe concerns about forests, wildlife, water and local communities in Raigad district. The planned 3,000 megawatt facility would store energy by pumping water uphill, then release it through turbines when electricity is needed. That can help the grid manage changing demand and renewable generation, but it also requires reservoirs and substantial construction. Environmental clearance was granted in January 2026; the plant is not yet supplying its planned storage service. The dispute brings its local land and water footprint into focus alongside its proposed electricity-system benefits.
Where the reservoirs would sit
Saidongar-1 is planned in the hilly Karjat area of Raigad, within western Maharashtra's Sahyadri or Western Ghats landscape. Mumbai lies to the west, near the Arabian Sea coast, while Pune is to the southeast. The project has separate upper and lower reservoirs. Their labels describe elevation, not compass direction: the coordinate reference for the lower reservoir is actually northeast of the upper one.
The lower reservoir is proposed across the Pej, a tributary of the Ulhas River. The Ulhas belongs to the west-flowing drainage reaching the Arabian Sea, rather than the east-flowing Deccan river systems. This connection matters because water retained or released upstream can affect uses farther downstream. The project's 2025 assessment places Bhimashankar Wildlife Sanctuary roughly 15 kilometres away. Being outside a sanctuary does not, by itself, resolve effects on surrounding habitats or streams.
How pumped storage shifts electricity through time
A pumped-storage plant uses the difference in height between two reservoirs. During charging, electrically driven pumps move water from the lower reservoir to the higher one. The raised water stores gravitational energy. During generation, water flows downhill through turbines that drive generators. The same water can be moved between the reservoirs repeatedly, but each operating cycle needs an initial supply of electricity.
The arrangement is therefore a rechargeable storage system, not a source of free electricity. Pumping, hydraulic movement and generating equipment involve losses, so less electrical energy returns than was used for charging. That difference must be included when calculating the plant's energy balance and operating costs. Gross electricity generated during discharge does not account for the electricity previously consumed while pumping.
Storage can still be useful despite those losses because electricity has to be available when people need it. Surplus generation during one period may not coincide with high demand later. Moving part of that energy into a later period can help meet the mismatch. The value depends on actual charging supplies, operating schedules and grid requirements, not simply on labelling a project as hydropower.
Power rating is different from stored energy
The proposed rating of 3,000 megawatts, or three gigawatts, describes the rate at which the plant could deliver power. It does not state how many hours it can maintain that output. Stored electrical energy is measured in units such as megawatt-hours, which combine power with time. Water available for cycling, the height difference and equipment performance all affect how much usable energy a reservoir system can deliver.
Larsen & Toubro announced its civil and hydro-mechanical construction contract in January 2026. It names Torrent Energy Storage Solutions Private Limited, previously Torrent PSH3 Private Limited, as the project entity. A July parliamentary reply separately listed Saidongar-1 among projects under construction and gave December 2029 as its anticipated completion. Those records establish a development stage and a prospective schedule, not completed generating capacity. An order awarded to a contractor, physical construction and commercial operation are different milestones.
Why the open-loop design matters
The project's records describe the revised scheme as open-loop pumped storage. In this classification, at least one reservoir has an ongoing connection with a natural water body. A closed-loop arrangement keeps the reservoirs separate from such a continuous connection. At Saidongar-1, the Pej setting makes river conditions and downstream needs part of the assessment. The technology's storage purpose does not make its water relationship irrelevant.
Recirculation does not mean using no water. The clearance envisages 23 million cubic metres for initial filling, with annual replacement for evaporation. Filling a reservoir is different from moving its water repeatedly. That distinction matters when evaluating how the project could affect downstream users.
Land and trees behind the controversy
The draft assessment identifies a total land requirement of about 377 hectares, including 233 hectares of forest land. It covers more than the water surface alone: project components, construction facilities and disposal of excavated material also need space. A reservoir's installed power rating cannot describe that footprint. Local effects depend on where these activities occur and how they interact with existing settlement, drainage and vegetation.
The Times of India reported an October 14 forest-department permission concerning 32,490 trees. The New Indian Express, carrying Press Trust of India inputs, quoted an official describing an October 6 approval involving forest diversion and 48,000 trees. These are differently described records, not verified counts of trees already felled. They should not be added together or substituted for one another. Both accounts report opposition to the clearing and demands to examine its environmental implications.
The state government's position also needs its proper status. The Times of India reported Minister of State for Power Meghna Bordikar saying that the project had complied with the Union ministry's conditions. That is the government's response to the objections, not an independent field audit establishing every condition's implementation. Allegations of damage, a reported permission and the actual work carried out require different supporting evidence.
Clearance is conditional, and compliance continues
The Ministry of Environment, Forest and Climate Change granted environmental clearance on 12 January 2026. Its order requires other applicable approvals to be obtained separately. Environmental clearance therefore does not, by itself, authorise every associated activity. Forest diversion and tree-felling permissions must be examined in their own right.
The clearance requires protection of seasonal rivulets and springs, wildlife planning and measures to reduce tree cutting through road design. These are continuing obligations, not proof that impacts have disappeared. Monitoring must show what has actually happened on the ground. Approval is not the end of environmental oversight.
Torrent's compliance submission dated 8 June covers January–March 2026, despite its later submission date. It records commitments, actions claimed by the company and further steps, including an upload concerning forest-clearance compliance. That is useful evidence of what the developer reported during that period. It cannot substitute for the October felling orders or independently establish the condition of the site during the present dispute.
Conclusion
Saidongar-1 illustrates why electricity storage and environmental scrutiny have to be considered together. Its proposed grid service comes from shifting energy between operating periods, not creating energy without losses or a physical footprint. The practical test is whether the promised storage service is delivered while the authorised land use, water obligations and safeguards are demonstrably followed. Clear, comparable records of permissions, felling and monitored impacts would make that assessment more meaningful for the affected communities.