Concerns over Environmental Clearance for Kalai-II Hydropower Project in Arunachal Pradesh

Concerns have arisen over the environmental clearance for the Kalai-II Hydropower Project in Arunachal Pradesh, particularly regarding its potential impact on the critically endangered White-bellied Heron. This issue is crucial for UPSC aspirants, especially for General Studies Paper 3, which covers environment and biodiversity. Last Updated: 2026-01-09

Key Facts About Kalai-II Hydropower Project

• The White-bellied Heron (Ardea insignis) is critically endangered.
• It is the second-largest heron globally.
• Its habitat relies on fast-flowing eastern Himalayan rivers.
• Feeds primarily on fish in river rapids.
• Features a long neck and serrated bill.
• Population under 60 individuals left in the wild.
• Majority of the population found in Bhutan.
• In India, sightings are in Arunachal Pradesh.
• Behavior is largely solitary; nests in tall trees.
• Serves as a bio-indicator for ecosystem health.
• Threats include hydropower dams and habitat loss.
• Kalai-II Hydropower Project proposed with 1,200 MW capacity.
• Project transferred to THDC India Limited for execution.
• Lohit River is a major tributary of the Brahmaputra River.
• Flows through protected areas like Kamlang Wildlife Sanctuary.
• Environmental clearance raises concerns for the heron's habitat.

India's Environmental Conservation Challenges

The Kalai-II Hydropower Project highlights the ongoing tension between development and environmental conservation in India. As the country aims to increase its renewable energy capacity, projects like these are essential for economic growth. However, they must be balanced with ecological preservation, especially in biodiversity-rich regions like Arunachal Pradesh. India ranks among the top countries in terms of biodiversity, making conservation efforts crucial for sustainable development.

UPSC Relevance

• GS Paper 1: Geography - Impact of projects on biodiversity.
• GS Paper 2: Governance - Policy implications of environmental clearances.
• GS Paper 3: Environment - Conservation of endangered species and habitat protection.
• Prelims: Questions on the White-bellied Heron, its habitat, and threats.
• Mains: Analytical themes on balancing development with environmental conservation.

FAQ Section

• What is the Kalai-II Hydropower Project? The Kalai-II Hydropower Project is a proposed 1,200 MW capacity project on the Lohit River in Arunachal Pradesh, aimed at harnessing renewable energy.
• Why is the Kalai-II Hydropower Project important? It is significant for India's renewable energy goals but poses threats to the habitat of the critically endangered White-bellied Heron.
• What are the key features of the White-bellied Heron? The White-bellied Heron is the second-largest heron globally, with a population under 60 individuals, primarily found in Bhutan and Arunachal Pradesh.