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Subansiri Lower Project Starts Wet Commissioning of Unit 1

27 October 20251 min read
NATIONAL AFFAIRSSubansiri LowerProject Starts WetCommissioning ofUnit 127 October 2025safalsetu.com

Why in the news

India’s biggest hydropower plant took a step closer to running, as the first generating unit entered its water-based trial stage.

Key facts

  • Project: Subansiri Lower Hydroelectric Project.
  • Total capacity: 2,000 MW, the largest hydropower project in India.
  • Milestone: wet commissioning of the first 250-MW unit.
  • Location: along the Arunachal Pradesh-Assam boundary.

Exam angle

  • Name and size: Subansiri Lower, 2,000 MW; unit being tested: 250 MW.
  • Term to know: wet commissioning, the trial run indicating the project is close to operations.
  • States linked: Arunachal Pradesh and Assam.

Test yourself

1. What is the total capacity of the Subansiri Lower Hydroelectric Project?

The notes state a total capacity of 2,000 MW.

2. Wet commissioning began for which unit size at the Subansiri Lower project?

The first 250-MW unit began wet commissioning.

3. Subansiri Lower project spans the boundary of which two states?

It spans the Arunachal Pradesh-Assam boundary.