Arunachal Pradesh Chief Minister Pema Khandu has clarified that no decision has been taken to construct the proposed Siang Upper Multipurpose Project (SUMP), emphasising that the immediate focus remains on assessing its feasibility and exploring possible alternatives.

The proposed project has become the subject of intense public debate in Arunachal Pradesh, bringing questions of water security, hydropower development, environmental protection and community interests into focus.

Amid growing concerns among sections of the indigenous Adi community, the Chief Minister's recent statement seeks to clarify the government's position and distinguish the ongoing pre-feasibility process from a final decision on construction.

The clarification comes at a critical time for the Siang region, where discussions about development must account for both the strategic importance of the river and the concerns of communities whose lives and livelihoods are closely connected to it.

No Decision on Construction: Understanding the Current Stage

In his statement on November 2, 2026, Chief Minister Pema Khandu made it clear that neither the Government of Arunachal Pradesh nor the Union government has taken a decision to construct the proposed dam.

According to the Chief Minister, the immediate exercise under consideration is the preparation of a Pre-Feasibility Report (PFR). This preliminary assessment is intended to examine the project's viability, potential implications and possible alternatives.

A pre-feasibility report is an early-stage assessment. It helps establish whether a proposed project warrants further investigation and what technical, environmental and economic questions need to be examined. It does not, by itself, constitute approval for construction.

The distinction is important in the current debate. The proposal's eventual direction will depend on further assessment, applicable legal requirements and consultation with the people and communities concerned.

The Chief Minister has also assured residents that their concerns regarding ancestral land, homes, livelihoods and the Siang River will be addressed through dialogue, transparency and meaningful public consultation.

Why Is the Siang Project Being Examined?

The proposed Siang Upper Multipurpose Project is envisioned as a major hydropower and water-storage initiative on the Siang River in Arunachal Pradesh. The proposal has a planned capacity of approximately 11,200 MW.

The project was declared a National Project by the Union government in February 2008. Its proposed multipurpose role has since assumed greater strategic significance amid developments involving hydropower infrastructure upstream in Tibet.

The Yarlung Tsangpo River, which flows into India as the Siang and subsequently forms part of the Brahmaputra river system, is central to this discussion.

China began construction of a major hydropower project on the Yarlung Tsangpo in July 2025. This development has heightened Indian concerns about the potential implications of large upstream infrastructure for water flows, regional water security and disaster preparedness.

The Arunachal Pradesh government has cited these developments as a reason to examine possible options for managing water-related risks and maintaining ecological flows in the Siang and Brahmaputra rivers.

The government's stated position is that the potential role of SUMP should be assessed scientifically and technically rather than assumed in advance.

At the same time, the implications of any proposed intervention would need careful examination. The relationship between large dams, flood management, seasonal water availability and ecological flows is complex and depends on project design, operating arrangements and river conditions. The preparation of a feasibility report can help examine these questions, but it cannot predetermine the outcome.

Development and Community Interests Must Be Considered Together

The Siang River is more than a source of water or a potential site for hydropower generation. It is closely connected to the history, culture and livelihoods of communities living along its course.

Sections of the Adi community have expressed apprehension about the proposed project, particularly the possibility of village submergence, displacement, loss of agricultural land and forests, and disruption to traditional livelihoods.

Residents have also raised questions about the environmental consequences of a large reservoir in a seismically active Himalayan region.

These concerns form an important part of the wider discussion surrounding SUMP. For people whose homes, land and cultural heritage could be affected, clarity about the project's possible consequences is essential.

The government has acknowledged these apprehensions and stated that public consultation will be central to any future decision.

The challenge is to ensure that technical assessments and strategic considerations are accompanied by credible information, transparent communication and meaningful engagement with affected communities.

A development proposal of this scale requires more than an assessment of its potential benefits. It also requires a thorough understanding of its social, environmental and economic costs, alongside the alternatives available.

The Role of Scientific Assessment and Public Consultation

The current pre-feasibility process provides an opportunity to examine the proposal's potential implications before any decision on construction is made.

A comprehensive assessment would need to consider several important areas:

·         Hydrology and water security: Understanding seasonal river flows, potential changes in upstream water availability and possible flood-related risks.

·         Environmental impact: Examining effects on river ecosystems, forests, biodiversity and downstream flows.

·         Seismic safety: Assessing geological conditions, seismic risks and the engineering requirements associated with a major dam in the Himalayan region.

·         Social impact: Identifying communities that could be affected, along with potential implications for homes, land, livelihoods and cultural heritage.

·         Economic viability: Evaluating construction costs, potential electricity generation, long-term benefits and financial risks.

·         Alternative options: Exploring whether different project designs or other water-management measures could address the concerns that the project is intended to examine.

Public consultation is equally important. Local knowledge and community perspectives can contribute to a more complete understanding of the river basin and the potential consequences of development.

The objective should be to ensure that decisions are informed by credible evidence, applicable safeguards and a clear understanding of the concerns raised by the people of the region.

Dialogue Remains Essential Amid Protests

Opposition to SUMP has intensified in recent months, with community organisations raising concerns about the proposed project and the continuation of preparatory activities.

The latest demonstrations and shutdown have reflected the depth of apprehension in parts of the Siang region. Demands raised by protesting organisations include the release of detained activists, withdrawal of additional security personnel and suspension of survey activities.

The situation has also witnessed clashes and damage to public and government-linked property, underscoring the need to restore calm and create conditions for constructive engagement.

The Chief Minister has appealed to residents and community organisations to participate in peaceful dialogue, reiterating that disagreement is a legitimate part of democratic life.

Moving forward, sustained communication between the administration, elected representatives, community organisations and residents will be important in addressing misunderstandings and clarifying the project's current status.