Inside India’s Push for 100 GW of Hydro Pumped-Storage Projects
From a mere 7.1 GW today to 100 GW by 2035-36: that is the sheer scale of ambition laid out in the Central Electricity Authority’s (CEA) proposal for hydro pumped-storage projects (PSPs). The policy roadmap includes relaxing environmental norms, reshaping compensatory afforestation rules, and accelerating project approvals. But what leaps off the page is the regulatory suggestion to reclassify PSPs as permissible even in eco-sensitive zones (ESZs) where strict prohibitions currently exist. For a country grappling with fragile ecosystems and rising renewable integration needs, this marks a turning point.
Breaking Away from Conservation Orthodoxy
The proposal fundamentally disrupts existing regulatory boundaries. Currently, protected areas and their 10-km buffers — mandated as ESZs under environmental laws — have served as no-go zones for energy projects. The new CEA framework calls for selectively overriding these limits, allowing PSPs within ESZs where formal notifications are not issued and even near biodiversity hotspots like the Western Ghats, albeit with conditions.
What sets this apart is the insistence on treating PSPs differently from conventional hydropower projects. PSPs, often built off-river or on existing reservoirs, involve minimal environmental displacement compared to dam-based hydropower, which infamously disrupted habitats and uprooted communities across Indian states in the past. By proposing a “White Category” classification for PSPs with low environmental impact, the CEA aims to fast-track approvals.
But precedents matter. India’s preoccupation with balancing energy infrastructure with environmental safeguards has always hinged on a deeply bureaucratic, often litigious structure. The sweeping relaxation proposed here — both in terms of ESZs and degraded land mandates for compensatory afforestation — risks precedent creep: if PSPs are allowed, would mining, resource extraction, or larger hydropower dams not seek similar exceptions down the line?
Rewriting the Rulebook: Easier Environmental Clearances
The CEA’s distinctive proposition lies in reshaping institutional mechanics. Under the Compensatory Afforestation Programme enshrined in the Forest Conservation Act, 1980, developers must offset diverted forest land with afforestation on non-forest land. The overhaul proposes replacing non-forest land mandates with degraded forest land — at double the area diverted. This provision, though previously only applicable to coal and public-sector projects, now stands extended to PSPs.
The significance is clear: India has a 30-million-hectare backlog of afforestation targets, largely due to disputes over land identification. By suggesting a national land bank and GIS-based mapping of degraded land areas, the CEA attempts to unblock a persistent logjam. However, the prescription veers toward the technocratic over the local: afforestation, when reduced to GIS models, undermines local ecological knowledge and ground-level variations in forest health.
The financial mechanism is equally aggressive. Viability Gap Funding (VGF), typically reserved for riskier infrastructure, will now apply to PSPs despite the latter’s established viability for grid stability. The emphasis on accelerating renewable-linked PSPs signals a clean energy pivot, but at what cost?
The Numbers Behind the Narrative
The CEA’s roadmap lays out an ambitious storage landscape to complement India’s renewable energy boom. Beyond the quantum jump to 100 GW by 2035-36, a nearer milestone of 87 GW by 2033-34 is pivotal. Comparisons with global investments in storage capacity are instructive: China, which leads in pumped hydro capacity, built over 30 GW across a single decade. India’s leap from 7.1 GW to five times that size requires not just relaxed norms but robust execution capability — an area where past performance has been underwhelming.
Precise cost estimations remain absent, but the capital-intensive nature of PSPs suggests multi-billion-dollar commitments. In parallel, Battery Energy Storage Systems (BESS), a competing technology for grid balancing, are being deprioritized in the Indian framework. The argument is PSPs’ longer duration (6–12 hours versus 4–6 hours for BESS) and lower lifecycle costs. Yet, cutting-edge battery technology globally points to shortening payback periods and rising modular reuse options — a trend India risks missing by focusing disproportionately on hydro PSPs alone.
The Sustainability Trade-off
Beneath the technical justifications lie uncomfortable questions. Will dilution of ESZ protections lead to irreversible ecological damage, especially in zones like the Western Ghats where biodiversity loss has historically followed infrastructural incursions? Rapid PSP expansion relies heavily on state endorsements, particularly for contentious rehabilitation and resettlement policies. Local resistance, witnessed recently in Tamil Nadu and Maharashtra, has often led to stalled projects and spiraling costs.
PSPs may indeed have a lower environmental toll than legacy hydropower dams, but exit clauses for scrapped projects — when ecosystems cannot recover — remain non-existent. The roadmap is silent on whether subsidiary compliance will be enforced where states fail. Should critical habitats be treated as dispensable for storage goals?
No Global Template Fits All
South Korea offers a pointed international contrast. Facing rising renewable integration and limited land availability, the country embraced incremental PSP projects built entirely off-existing infrastructure, such as dam spillways and in-river barrages. Unlike India’s proposal to relax ESZ norms wholesale, South Korea retained its protected-area restrictions but imposed efficiency mandates on PSP installations — achieving capacity additions without ecological compromise. Why hasn’t India examined such intermediate alternatives?
Further, the governance architecture for large infrastructure in South Korea emphasizes citizen consultation early in the planning stage, reducing project disruption risks. By contrast, India’s top-down mechanism continues to treat local resistance as a hurdle to be contained rather than a community whose consensus must be earned.
A Balancing Act
The CEA’s proposal targets ambitious storage capacity but leaves open the question of trade-offs. How far can ecological norms be diluted without undermining conservation goals? Much depends on how India threads the needle between rapid approvals and sustainability. Without robust institutional safeguards, the regulatory floodgates risk opening far beyond what PSPs alone require.
- What is the primary difference between hydro PSPs and conventional hydropower projects?
(a) PSPs do not involve water storage
(b) PSPs utilize pumped water for grid balancing rather than direct power generation
(c) PSPs eliminate the need for afforestation compensations
(d) PSPs require no environmental clearances
Answer: (b) - What does the CEA proposal suggest concerning compensatory afforestation for PSPs?
(a) Using degraded forest land in place of non-forest land
(b) Prioritizing non-forest land over degraded areas
(c) Tripling impacted land area for compensatory measures
(d) Converting PSPs into White Category projects entirely exempt from afforestation
Answer: (a)
Practice Questions for UPSC
Prelims Practice Questions
- The proposal seeks to treat PSPs as a distinct category from conventional hydropower due to relatively lower environmental displacement in many cases.
- The proposal implies that ESZ protections could be selectively overridden for PSPs, including in areas where formal ESZ notifications are not issued.
- The proposal maintains the existing compensatory afforestation rule that diverted forest land must be offset only through afforestation on non-forest land.
Which of the above statements is/are correct?
- The roadmap argues PSPs have longer storage duration than BESS and lower lifecycle costs, strengthening their case for renewable integration.
- Applying Viability Gap Funding (VGF) to PSPs reflects the view that PSPs are inherently unviable without public support, as stated in the article.
- Allowing PSPs in ESZ-linked contexts could create a precedent that other sectors may cite to seek similar relaxations.
Which of the above statements is/are correct?
Frequently Asked Questions
Why does the proposal argue that pumped-storage projects (PSPs) should be treated differently from conventional hydropower for environmental clearance?
The proposal highlights that many PSPs can be off-river or built on existing reservoirs, implying comparatively lower displacement and habitat disruption than dam-based hydropower. On this basis, it recommends a low-impact regulatory approach, including a “White Category” type classification to fast-track approvals.
What regulatory change is proposed regarding Eco-Sensitive Zones (ESZs), and why is it controversial?
It suggests allowing PSPs to be permissible even within ESZs in cases where formal ESZ notifications are not issued, and even near biodiversity hotspots like the Western Ghats subject to conditions. This is controversial because ESZs and protected-area buffers have functioned as no-go zones, and dilution could set a precedent for other high-impact activities seeking similar exceptions.
How does the proposal seek to modify compensatory afforestation requirements under the Forest Conservation framework?
Instead of requiring afforestation on non-forest land to offset diverted forest land, it proposes using degraded forest land at double the area diverted. The article notes this route had earlier been limited to coal and public-sector projects, and is now proposed to be extended to PSPs.
What institutional mechanisms does the proposal recommend to address delays in compensatory afforestation implementation?
It points to a large afforestation-target backlog driven by land identification disputes and proposes a national land bank along with GIS-based mapping of degraded land. The concern flagged is that a technocratic GIS-led approach can underplay local ecological knowledge and site-specific forest-health variations.
How does the roadmap position PSPs relative to Battery Energy Storage Systems (BESS) for grid balancing, and what risk does it imply?
PSPs are favored because the article states they offer longer discharge duration (6–12 hours) compared to BESS (4–6 hours) and lower lifecycle costs. The risk is that deprioritizing BESS could make India miss global trends in improving battery economics and modular reuse, narrowing future flexibility.
Source: LearnPro Editorial | Environmental Ecology | Published: 31 January 2026 | Last updated: 3 March 2026
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