Pancheshwar Multipurpose Project

Summary

A proposed bi-national multipurpose project on the Mahakali/Sharda border river. The current official Nepal project description gives 6,720 MW for the full scheme: 6,480 MW at the high dam plus 240 MW at the Rupali Gad re-regulating dam, with 12,333 GWh of average annual energy. The Mahakali Treaty was signed in 1996, but the 2016 WAPCOS draft DPR has not become a mutually accepted final DPR and construction has not started.

Specifications

Engineering

At 315 m, the proposed rockfill dam on the Mahakali River would be among the world's largest of its type — taller than the Nurek Dam (300 m, Tajikistan) and comparable in scale to the Rogun Dam (335 m, under construction). The site is in the Mahakali gorge near the Nepal-India border, with the dam axis straddling the international boundary.

The published concept uses two equal underground powerhouses, one on each bank, providing 3,240 MW per country at the high dam. The official Nepal project page describes six 540 MW Francis units on each side. An 83 m Rupali Gad re-regulating dam adds 240 MW and moderates downstream flow variation from peaking operation.

But the engineering question is not whether the dam can be built — it is whether the bilateral governance structure can deliver it. 30 years after the Mahakali Treaty was signed, Nepal has received zero megawatts. This is the definitive case for Buildability as a political construct, not an engineering one.

Storage & Output

Pancheshwar's multipurpose design means three outputs share the same reservoir:

1. Power generation (6,720 MW full scheme, with equal high-dam powerhouse capacity on each bank)
2. Irrigation regulation for downstream Uttar Pradesh and Nepal's far-western Terai — valued differently by each side
3. Flood control — the Mahakali/Sharda is a monsoon flood source for the Ghaghara-Ganges system

The official Nepal project description gives 12,333 GWh of average annual energy for the full scheme and 6.56 billion m³ of live storage at the high dam. These are published project parameters, not evidence of an approved final DPR or construction readiness.

Financial

The current official source set does not establish an approved project cost, financing plan, sovereign guarantees or financial close. Cost and benefit-allocation estimates in older commentary should be treated as dated proposals until the final DPR and bilateral decisions are published.

Schedule

The Mahakali Treaty was signed in 1996. The DPR was drafted by India's WAPCOS in 2016 and remains unapproved — now a decade in ministerial limbo. This is not a construction delay; this is a governance delay at the most fundamental level.

Current Status

As of 10 July 2026: stalled before an agreed final DPR. India's Ministry of Jal Shakti records that WAPCOS submitted the draft final DPR in November 2016 and that finalisation remains underway because contentious issues are unresolved.

Recent Updates

The current official websites continue to publish project, disclosure and institutional material, but no source reviewed for this update establishes final DPR approval or construction commencement.

Active Blockers

Limitations & Controversies

• Final DPR unresolved. The 2016 draft remains the central evidence gap. Technical figures may change until a mutually accepted final DPR is published.
• Benefit allocation unresolved. Official India material explicitly records contentious bilateral issues but does not provide a current, agreed allocation protocol in the source set used here.
• Social and environmental evidence is incomplete. Displacement, resettlement, biodiversity, downstream-flow and cumulative-impact totals should not be treated as current without the final assessment documents.
• Seismic and dam-safety requirements are material. A 315 m Himalayan rockfill dam requires current project-specific design and review evidence; regional hazard descriptions are not a substitute.
• Financing unresolved. No approved cost and financing package is established in the current official record.

The DPR: What WAPCOS Drafted in 2016

The Detailed Project Report drafted by India's WAPCOS in 2016 is the most important unapproved document in Nepal-India hydropower relations. Key technical elements reported in public summaries include:

• Dam axis: near the Pancheshwar gorge, with the dam body straddling the international boundary
• Installed capacity: 6,720 MW full scheme (6,480 MW high dam plus 240 MW re-regulating dam)
• Annual energy: 12,333 GWh on the current official Nepal project page
• High-dam live storage: 6.56 billion m³ on the current official Nepal project page
• Irrigation: command area in both Nepal's far-western Terai and India's Uttar Pradesh
• Flood control: downstream regulation for the Sharda-Ghaghara system

The DPR's unapproved status means none of these figures are bankable. Until the Joint Expert Group finalizes and both cabinets approve the report, procurement cannot begin.

The Benefit-Sharing Impasse

Official India material states that contentious bilateral issues prevent final DPR agreement. Public commentary commonly identifies irrigation, regulated-water and other non-power benefits among those issues, but the current wiki source set does not establish a mutually agreed valuation or allocation formula. Precise negotiating positions should be linked to joint minutes before being presented as current.

Parallel stalls

Pancheshwar is not unique — several Nepal-India joint projects are stuck on similar valuation questions:

• Saptakoshi High Dam: JTE meetings stalled; 17th JTE was October 2023
• Sunkoshi Storage: similar bilateral design and benefit-sharing stalemates
• Naumure (West Rapti): not yet bilateral but downstream impacts with India are foreseeable

The pattern is systemic: India-Nepal water cooperation lacks a standardized framework for valuing and sharing non-electricity benefits. Every project becomes a standalone negotiation, and every standalone negotiation stalls on the same question.

International Comparison: Itaipu

The Itaipu comparison is instructive: the treaty created a single binational entity (Itaipu Binacional) with clear governance, Brazil guaranteed the debt (80% of the cost), and Paraguay's excess power was purchased by Brazil at a defined price. Pancheshwar has none of these.

The critical difference is governance architecture. Itaipu showed that a single joint entity with clear commercial mandate can deliver. Pancheshwar shows that a treaty without an implementing entity, without financing commitments, and without a mechanism for valuing non-power benefits cannot.

Displacement & Social Impact

The reservoir and associated infrastructure would affect communities on both sides of the border. The current source set used for this update does not contain an approved, consolidated resettlement plan or a final cross-border affected-household total. Historical estimates should be retained only with their document date and assessment boundary.

Seismic & Environmental Risk

The Himalayan setting makes seismic loading, slope stability, sediment, spillway design and downstream-flow change material assessment topics for a 315 m rockfill dam. The current page does not assign a project hazard class or quantify those impacts because the governing final DPR, dam-safety review and environmental documents are not in the source set.

Unresolved Milestones

The evidence trail supports three pending milestones without prescribing how the two governments should resolve them:

1. A mutually accepted final DPR.
2. A documented agreement on outstanding bilateral technical and benefit-allocation issues.
3. An approved cost, financing and implementation package capable of supporting procurement and construction.

Significance

Pancheshwar is the ultimate case study for Hydro-Geopolitics. It shows how bilateral treaty structures, domestic politics on both sides, the difficulty of valuing non-electricity benefits, and the absence of a single executing entity can prevent even the most strategically obvious projects from materializing.

The comparison with Budhigandaki Hydroelectric Project — a 1,200 MW domestically-controlled storage project that is actually advancing — supports the Domestic-Led Hydro Strategy thesis: projects that Nepal can control unilaterally are slow, but projects that require bilateral consensus may be impossible.

Related

• Mahakali Basin — the river
• India — Energy Relationship with Nepal — the bilateral context
• Hydro-Geopolitics — the analytical frame
• Budhigandaki Hydroelectric Project — the domestically-controlled storage counterpoint
• Karnali Chisapani Project — the other mega-project in the same governance class
• Domestic-Led Hydro Strategy — the policy thesis Pancheshwar supports
• Buildability — why governance matters as much as engineering
• Nepal River Geopolitics Explorer
• Map Inventory

Sources

• Pancheshwar Official Project Records — Nepal and India
• National Water Plan, Nepal
• World Bank Ganges Strategic Basin Assessment