Siang Dam Protests 2026: NHPC Project, Tribal Concerns and China Factor

Understand the 2026 Siang dam protests in Arunachal Pradesh, NHPC’s 11,200-MW hydropower project, tribal concerns, environmental risks and the China factor.

Table of Contents

The Siang dam protests in Arunachal Pradesh intensified in October 2026, highlighting tensions between India’s hydropower ambitions, national security, and indigenous community rights. The proposed 11,200-MW Siang Upper Multipurpose Project (SUMP), being undertaken by NHPC Limited, faces opposition over displacement, environmental damage, and the loss of ancestral land and livelihoods.

What Is the Siang Upper Multipurpose Project?

The Siang Upper Multipurpose Project is a proposed hydropower and water-storage project in Arunachal Pradesh.

Key facts:

Capacity: 11,200 MW
Implementing agency: NHPC Limited
Location: Siang river basin, Arunachal Pradesh
Status: Pre-feasibility survey stage, as reported in October 2026.
Strategic significance: Hydropower development and water security amid China’s upstream dam construction.

Why Are Locals Protesting?

Sections of the indigenous Adi community and local farmers have raised several concerns.

Displacement: The proposed reservoir could submerge villages and ancestral lands.
Livelihoods: Agricultural fields, horticultural areas, and cattle-grazing land may be affected.
Environmental damage: Residents fear ecological disruption and changes to the river system.
Insufficient consultation: Protesters allege inadequate engagement with affected landowners.
Cultural identity: Submergence could threaten traditional landscapes and community heritage.

In October 2026, protests turned violent in parts of the region, including Pasighat. Authorities imposed restrictions on public gatherings in Pasighat, Mebo and Ruksin.

NHPC’s ₹10.91-Crore PR Campaign

According to The Indian Express, NHPC awarded Mumbai-based Concept Public Relations a one-year contract worth ₹8.73 crore in July 2025. A three-month extension until November 6, 2026, increased the total contract value to approximately ₹10.91 crore.

The campaign included community meetings, media outreach, social-media engagement, stakeholder mapping, and public sentiment monitoring. However, protests continued despite these efforts, highlighting the importance of addressing substantive public concerns alongside information campaigns.

China Factor: Strategic Importance

China’s hydropower development on the Yarlung Tsangpo River in Tibet has increased India’s strategic interest in the Siang basin. The river enters Arunachal Pradesh as the Siang and eventually becomes part of the Brahmaputra system.

In December 2024, China approved a 60,000-MW hydropower project on the lower Yarlung Tsangpo.

India’s concerns include downstream water security, river-flow management and the strategic implications of upstream infrastructure. The proposed Siang project is being considered within this broader context. However, the actual effects of China’s project will depend on its design and operational procedures.

Environmental and Governance Challenges

The proposed project raises important questions concerning biodiversity, river ecology, seismic risks, rehabilitation and compensation.

A comprehensive environmental and social impact assessment is essential to understand these risks. Transparent consultation with affected communities and credible livelihood-restoration measures are equally important.

Way Forward

Meaningful consultation: Engage affected villagers, landowners and indigenous institutions.
Scientific assessment: Evaluate environmental and disaster-related risks.
Fair rehabilitation: Protect livelihoods and provide appropriate compensation.
Transparent communication: Disclose project information and survey findings.
Water diplomacy: Strengthen dialogue with China regarding upstream river projects.
Peaceful resolution: Address grievances through dialogue and lawful democratic processes.

Conclusion

The Siang Upper Multipurpose Project highlights the challenge of balancing national security, hydropower development and indigenous rights. Its future depends on technical feasibility, environmental safeguards, transparent decision-making and meaningful community participation.