What is Subansiri hydel project?
Historical Background
Key Points
10 points- 1.
Located on the border of Arunachal Pradesh and Assam.
- 2.
Aims to generate 2,000 MW of hydroelectric power.
- 3.
Involves construction of a large concrete gravity dam.
- 4.
Project developer is National Hydroelectric Power Corporation (NHPC).
- 5.
Faces concerns regarding downstream impacts on river ecology and local communities.
- 6.
Requires compensatory afforestation to mitigate environmental damage.
- 7.
Involves complex environmental impact assessments (EIA).
- 8.
Concerns about seismic activity in the region.
- 9.
Avulsion hydro-peaking to allow elephant crossing.
- 10.
Significant investment in infrastructure development in the region.
Visual Insights
Subansiri Hydel Project Timeline
Timeline of key events related to the Subansiri Lower Hydroelectric Project.
The Subansiri project has faced numerous hurdles due to environmental concerns and local opposition, leading to significant delays.
- 2003Project approved initially
- 2011Construction halted due to environmental concerns and protests
- 2019Construction resumed after clearances
- 2020Environment Ministry issued first reminder on compensatory afforestation
- 2026Compensatory afforestation plans under review by MoEFCC; avulsion hydro-peaking decision
Subansiri Hydel Project: Key Aspects
Mind map illustrating the key aspects of the Subansiri Hydel Project, including its objectives, environmental concerns, and legal framework.
Subansiri Hydel Project
- ●Objectives
- ●Environmental Concerns
- ●Legal Framework
- ●Stakeholders
Recent Developments
5 developmentsProject construction is ongoing with revised timelines.
Continued scrutiny from environmental groups and local communities.
Focus on mitigating downstream impacts and ensuring safety.
Compensatory afforestation plans under review by the MoEFCC.
Discussions on optimal reservoir management to minimize ecological damage.
Frequently Asked Questions
61. What is the Subansiri Lower Hydroelectric Project and what is its primary objective?
The Subansiri Lower Hydroelectric Project is a major gravity dam project under construction on the Subansiri River, a tributary of the Brahmaputra. Its primary objective is to generate 2,000 MW of hydroelectric power.
Exam Tip
Remember the river name (Subansiri) and the power generation target (2,000 MW) for prelims.
2. What are the key provisions of the Subansiri Lower Hydroelectric Project?
The key provisions of the Subansiri Lower Hydroelectric Project include:
- •Location on the border of Arunachal Pradesh and Assam.
- •Aim to generate 2,000 MW of hydroelectric power.
- •Construction of a large concrete gravity dam.
- •Project developer is National Hydroelectric Power Corporation (NHPC).
- •Concerns regarding downstream impacts on river ecology and local communities.
Exam Tip
Focus on the location, power generation capacity, and implementing agency (NHPC).
3. What environmental and social concerns are associated with the Subansiri Lower Hydroelectric Project?
The project faces concerns regarding downstream impacts on river ecology and local communities. These concerns led to project delays and construction halts.
Exam Tip
Understand the potential negative impacts of large dam projects on river ecosystems and local populations.
4. What is the legal framework governing the Subansiri Lower Hydroelectric Project?
The legal framework includes:
- •Environment Protection Act 1986
- •Forest Conservation Act 1980
- •Environmental Impact Assessment Notification 2006
- •Guidelines from the Ministry of Environment, Forest and Climate Change (MoEFCC)
Exam Tip
Remember the key environmental laws and the role of MoEFCC.
5. What are the challenges in the implementation of the Subansiri Lower Hydroelectric Project?
Challenges include environmental concerns, local protests, and the need for clearances. Mitigating downstream impacts and ensuring safety are also key challenges.
Exam Tip
Consider the socio-economic and environmental trade-offs involved in such large infrastructure projects.
6. What is the significance of the Subansiri Lower Hydroelectric Project for India's energy security?
The project aims to generate 2,000 MW of hydroelectric power, which can contribute to India's energy security by increasing the availability of renewable energy.
Exam Tip
Relate the project to India's broader goals of increasing renewable energy capacity and reducing carbon emissions.