Capacity Addition / Project Commissioning
THDC India Declares COD of 250 MW Tehri PSP Unit; NTPC Group Capacity Rises
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THDC India Limited (subsidiary of NTPC) has declared Commercial Operation Date (COD) for Unit IV (250 MW) of the Tehri Pumped Storage Project. This increases THDC’s total capacity to 3,907 MW and strengthens NTPC Group’s overall capacity.
PRICE-SENSITIVE TRIGGER
Event: Commercial Operation (COD) Declaration
Type: Capacity Addition / Project Commissioning
Impact: Positive
Immediate Effect: Enhances generation capacity and revenue potential

Key Metrics
Project Details
- Unit Commissioned: Unit IV – 250 MW
- Project: Tehri PSP (4×250 MW)
- COD Effective Date: April 12, 2026
Capacity Impact
- THDC Total Capacity: 3,907 MW
- NTPC Group Installed Capacity: 89,378 MW
- NTPC Commercial Capacity: 88,298 MW
Highlights
250 MW capacity addition commissioned
What Happened ?
THDC India Limited announced the successful commissioning and declaration of COD for Unit IV (250 MW) of the Tehri Pumped Storage Project.
The unit will commence commercial operations from April 12, 2026, after receiving all necessary approvals.
Details Breakdown
Project Commissioning
- Final unit (Unit IV) of Tehri PSP (4×250 MW) declared operational
- Marks completion of key hydro storage capacity addition
Strategic Importance
- Pumped storage projects are critical for renewable energy balancing
- Supports grid stability and peak demand management
Business Significance
- Adds to revenue-generating capacity
- Strengthens NTPC Group’s renewable integration strategy
- Enhances long-term energy infrastructure
Risk Analysis
Key Risks
- Hydropower generation dependent on water availability
- Regulatory and tariff-related risks
- Long gestation and capital-intensive nature
Worst Case Scenario
Lower utilization or regulatory constraints could impact expected returns from the project
Risk Level: Medium
Company Commentary
- COD declared post successful commissioning and approvals
- Capacity addition strengthens overall power generation portfolio
- Supports long-term energy infrastructure growth
Official Exchange Filing: NTPC Limited