Siang Upper Multipurpose Project: 11,200 MW Hydropower Plan in Arunachal to Counter Chinese Upstream Dams

The proposed 11,200 MW Siang Upper Multipurpose Project in Arunachal Pradesh, India's largest hydropower plan, faces strong local opposition from the Adi community over displacement and cultural loss. While the government cites national security to counter China's upstream dams on the Yarlung Tsangpo, experts question the strategic rationale without detailed knowledge of the Chinese project's operations.

• ⚡Massive Hydropower Plan

  India proposes its largest 11,200 MW hydropower project on the Siang river in Arunachal Pradesh.

• 🇨🇳China Counter Strategy

  The project is justified as a strategic necessity to counter China's 60,000 MW dam upstream on the Yarlung Tsangpo.

• 👥Indigenous Opposition

  Local Adi communities oppose the project due to threats to ancestral land, livelihood, and cultural heritage.

Yarlung Tsangpo / Brahmaputra River

A transboundary river originating in Tibet (Yarlung Tsangpo), flowing through Arunachal Pradesh (Siang), Assam (Brahmaputra), and Bangladesh (Jamuna). China's upstream projects are a perennial concern for India's water security.

Indigenous/ Tribal Communities (Scheduled Tribes)

Constitutionally recognized communities with distinct social, cultural, and economic identities. In Arunachal Pradesh, the Adi tribe is one such major group, whose rights are protected under the Sixth Schedule and other laws.

Pre-Feasibility Report (PFR)

An initial study conducted for a project to assess its basic viability, covering technical, economic, and environmental aspects before investing in a detailed project report (DPR).

Strategic Hydropower

The use of dam projects not just for electricity but as geopolitical tools to secure water flows, establish presence in border areas, and counter upstream interventions by co-riparian states.

• Data: 11,200 MW capacity of Siang Upper Multipurpose Project (SUMP).
• Nodal Body: Brahmaputra Board (initial proposer) and the Arunachal Pradesh government.
• Geopolitical Angle: The project is a response to China's 60,000 MW lower Yarlung Tsangpo project approved in December 2024.

1. Q1Easy

   The Siang Upper Multipurpose Project is proposed on which major river system in India?

   • ABrahmaputra River System
   • BGanga River System
   • CKrishna River System
   • DGodavari River System
2. Q2Hard

   Consider the following statements regarding the Siang Upper Multipurpose Project (SUMP):

   1. 1.It is proposed to be India's largest hydropower project with a capacity of 11,200 MW.
   2. 2.The primary rationale for the project is to provide irrigation water to the northeastern states.
   3. 3.The project faces opposition from the local Adi community over concerns of displacement and loss of cultural heritage.

   Which of the statements given above is/are correct?

   • AOnly 1
   • BOnly 2
   • CBoth 1 and 3
   • DAll three
3. Q3Medium

   What is the installed capacity of the Chinese hydropower project on the Yarlung Tsangpo that has prompted strategic concerns leading to the Siang project proposal?

   • A75,000 MW
   • B30,000 MW
   • C60,000 MW
   • D45,000 MW
4. Q4Medium

   What is the core argument of experts who question the national security justification for the Siang Upper Multipurpose Project?

   • AThe project violates international water-sharing treaties with Bangladesh.
   • BIndia does not have basic operational details of the Chinese project to formulate an effective counter-strategy.
   • CIndia lacks the technical expertise to build such a large dam.
   • DThe project will be too expensive and economically unviable.

• Original27 October 2026 · Read story