CCEA clears 1200 MW Kalai-II hydro project

The first hydropower project in Arunachal Pradesh's Lohit basin wins Cabinet approval — a Rs.14,105.83 crore THDC–State joint venture.

What happened

• The Cabinet Committee on Economic Affairs (CCEA), chaired by the Prime Minister, approved an investment proposal of Rs.14,105.83 crore for constructing the Kalai-II Hydro Electric Project (HEP) in Anjaw district, Arunachal Pradesh.
• The project has an installed capacity of 1200 MW, configured as 6 units of 190 MW plus 1 unit of 60 MW, and is designed to generate about 4,852.95 million units (MU) of electricity a year.
• It sits on the Lohit river and is the first hydropower project to be taken up in the Lohit Basin, opening a previously untapped river system for power generation.
• Kalai-II will be built by a joint venture of THDC India Limited and the Government of Arunachal Pradesh, with an estimated construction window of about 78 months.
• The Government of India will provide Rs.599.88 crore as enabling-infrastructure support and Rs.750 crore as Central Financial Assistance (CFA) toward the State's equity contribution.
• The host State, Arunachal Pradesh, will receive 12% free power and an additional 1% toward a Local Area Development Fund (LADF) over the project's life, along with roughly 29 km of new roads and bridges in the Namsai and Anjaw districts.

Background & context

The decision belongs to a long-running national effort to unlock the hydropower potential of the Eastern Himalayas. Arunachal Pradesh is widely described as the country's largest reservoir of untapped hydropower, holding a very large share of India's identified hydro potential, yet for decades the bulk of that potential stayed on paper because of difficult terrain, the cost of evacuation infrastructure and the financial risk that deterred private developers. To revive stalled and unallotted projects, the Union Government has increasingly routed large Himalayan schemes through its Central public-sector hydro companies in partnership with the State governments — a model that lets the Centre carry the construction risk while the State retains an equity stake and the long-term benefits of free power.

Kalai-II is a clear instance of that model. The developer, THDC India Limited, is a Central public-sector enterprise headquartered at Rishikesh, originally set up to build and operate the Tehri hydropower complex on the Bhagirathi in Uttarakhand. THDC is now a subsidiary of NTPC Limited (following the Government of India's disinvestment of its stake to NTPC), which has brought the country's largest power generator into the Himalayan hydro and pumped-storage space. By pairing THDC's project-execution capacity with the Government of Arunachal Pradesh as an equity partner, the Kalai-II joint venture follows the same template that the Centre has used to restart other large North-Eastern projects.

The project is also a building block of India's broader energy-transition arithmetic. Large hydropower provides dispatchable, low-carbon electricity and, crucially, the fast-ramping flexibility and grid-balancing services that a system absorbing growing volumes of variable solar and wind increasingly needs. As India works toward its commitments of reaching about 500 GW of non-fossil installed capacity by 2030 and net-zero emissions by 2070, conventional and pumped-storage hydro have been re-prioritised after years in which thermal and, later, solar dominated capacity addition. Kalai-II's roughly 4,853 MU of annual generation feeds directly into that non-fossil capacity goal.

For Prelims

• Project & capacity: Kalai-II Hydro Electric Project — 1200 MW (6×190 MW + 1×60 MW), expected annual generation ~4,852.95 MU.
• River & location: on the Lohit river, in Anjaw district, Arunachal Pradesh; the first hydro project in the Lohit Basin.
• Approving body: the Cabinet Committee on Economic Affairs (CCEA) — the Cabinet committee, chaired by the Prime Minister, that clears major investment and economic-policy proposals; it is a committee of the Union Cabinet, not a constitutional or statutory body.
• Investment: total Rs.14,105.83 crore; central support of Rs.599.88 crore (enabling infrastructure) + Rs.750 crore (CFA for State equity); construction ~78 months.
• Developer: a JV of THDC India Limited and the Government of Arunachal Pradesh. THDC India Ltd is a Central PSU, originally the Tehri Hydro Development Corporation, now a subsidiary of NTPC Limited.
• Host-State benefits: 12% free power + 1% for the Local Area Development Fund (LADF), plus ~29 km of roads/bridges in Namsai and Anjaw districts.
• The Lohit: a major tributary of the Brahmaputra. The Brahmaputra is joined near Sadiya in Assam by three rivers — the Lohit, the Dibang and the Siang/Dihang — after which it takes the name Brahmaputra; the Siang is the main stem that enters India from Tibet, where it is called the Tsangpo.
• Free-power model: the 12% free power to the host State is the standard benefit-sharing norm in Indian hydropower; an additional 1% is now routinely earmarked for an LADF for affected areas. This pattern recurs across recent CCEA hydro clearances, so the "12% + 1%" split is a high-yield fact to lock in.
• What it is NOT: Kalai-II is not a Tibet/China project and not on the main Brahmaputra (Siang) stem — it is on the Lohit tributary, entirely within Arunachal Pradesh. It is not a private-developer project — it is a Central-PSU–State joint venture. It is not a pumped-storage plant — it is a conventional run-of-river/storage hydroelectric project. And the approving authority is the CCEA, not the CCS (Cabinet Committee on Security) or CCPA — a frequent match-the-committee trap.
• The comparative set (CCEA / Cabinet hydro & energy clearances to know): Kalai-II (1200 MW, Lohit, Arunachal) sits alongside other large Himalayan and North-Eastern hydro projects taken up through Central PSUs — for example the Dibang Multipurpose Project (the largest in the pipeline, on the Dibang in Arunachal, via NHPC) and the Subansiri Lower (Gerukamukh) project on the Subansiri (NHPC). Keep the river–developer pairings straight: Lohit → Kalai-II → THDC/NTPC; Dibang → Dibang Multipurpose → NHPC; Subansiri → Subansiri Lower → NHPC; Bhagirathi → Tehri → THDC.

Why it matters

The significance of Kalai-II runs along three lines. First, it addresses an energy-security and clean-power problem: India needs large blocks of firm, low-carbon generation that can be ramped up and down to balance a grid increasingly fed by intermittent solar and wind, and big Himalayan hydro is one of the few sources that delivers both scale and flexibility. By unlocking the Lohit basin for the first time, the clearance converts long-dormant potential into a concrete addition of roughly 4,853 MU a year of non-fossil electricity.

Second, it advances a regional-development and federal-equity goal. Arunachal Pradesh's hydro wealth has historically generated little local benefit because projects stalled before construction. The 12% free power plus the 1% Local Area Development Fund gives the State a durable revenue stream and a dedicated pool for affected communities, while the bundled ~29 km of roads and bridges and the enabling-infrastructure grant of Rs.599.88 crore bring connectivity to remote border districts. The Rs.750 crore Central Financial Assistance toward State equity lets a fiscally small State take a genuine ownership stake rather than merely host the asset — an instrument of cooperative federalism.

Third, there is a strategic and border-development dimension. Anjaw is a frontier district in the easternmost stretch of Arunachal Pradesh, and developing dependable infrastructure, power and connectivity in such areas supports both livelihoods and the broader objective of strengthening India's presence along sensitive Himalayan frontiers. At the same time the project carries the familiar challenges of large Himalayan hydro — seismic risk in a high-earthquake zone, ecological sensitivity of free-flowing rivers, downstream concerns in Assam and the need for credible resettlement and environmental safeguards — which is exactly why the benefit-sharing and local-development components are written into the approval.

For Mains