Tehri Hydro Power Complex (2400 MW)
Tehri Hydro Power Complex (HPC) is a multipurpose hydro power complex developed by THDC India Limited (THDCIL) on the Bhagirathi River in Uttarakhand. With a total installed capacity of 2,400 MW, the complex comprises Tehri HPP (1,000 MW), Koteshwar HEP (400 MW) and Tehri Pumped Storage Plant (1,000 MW). The complex supports peak power generation, irrigation and drinking-water requirements of the region and contributes significantly to grid balancing and renewable energy integration.
Tehri Hydro Power Plant (1000MW)
Tehri Hydro Power Plant (HPP) is a storage-based hydropower project comprising a 260.5 m high earth and rockfill dam across the River Bhagirathi and an underground powerhouse equipped with four 250 MW Francis turbine-generator units. Commissioned during 2006–07, Tehri HPP provides valuable peaking power to the Northern region of the country and supports the irrigation and drinking-water requirements in the region. The reservoir has also contributed to flood moderation during periods of heavy rainfall.
GENERAL FEATURES
| Particulars | Details |
| Installed Capacity | 1000 MW (4X250 MW) |
| Location | Tehri Garhwal, Uttarakhand |
| Design Energy | 2797 MU |
| Commercial Operation Date | - Unit-4: 22.09.2006
- Unit-3: 09.11.2006
- Unit-2: 30.03.2007
- Unit-1: 09.07.2007
|
| Beneficiary States/ UTs | Uttar Pradesh, Uttarakhand, Punjab, Rajasthan, Delhi, Jammu & Kashmir, Chandigarh, Haryana and Himachal Pradesh |
KEY TECHNICAL FEATURES
| Particulars | Details |
| Dam Type | Earth and Rockfill Dam |
| Dam Height | 260.5 m |
| Dam Length at Top | 575 m |
| Gross Reservoir Storage | 3,540 MCM |
| Live Storage | 2,615 MCM |
| Full Reservoir Level (FRL) | EL 830 m |
| Spillway | 3-bay Chute Spillway + 2 Right Bank Shaft Spillways + 2 Left Bank Shaft Spillways |
| Head Race Tunnels | 2 x 8.5 m diameter; 1,634 m total length |
| Penstocks | 4 × 5.75 m diameter; 1,040 m total length |
| Tail Race Tunnels | 2 × 9.0 m diameter, 862.5 m & 747.5 m long |
| Powerhouse | Underground, Left Bank |
| Generating Units | 4 × 250 MW |
| Turbine Type | Francis |
| Maximum / Minimum Head | 231.5 m / 127.5 m |
| Design Head | 188 m |
| Rated Discharge per Unit | 145 cumecs |
| Switchyard | 400 kV Indoor SF₆ Switchgear |
| Benefits from the Tehri Hydro Power Complex |
· Addition to the installed generating capacity in the Northern Region;
(1000 MW on completion of Tehri Stage-I); | 2400 MW |
- Annual energy availability (Peaking)
(2797 MU on completion of Tehri Stage-I)
| 5220 MU |
| 2.70 Lac.ha. |
- Stabilisation of existing irrigation
(besides above)
| 6.04 Lac.ha. |
- Additional Generation in downstream Projects
| 200 MU |
- 300 Cusecs (162 million gallons per day) of drinking water for Delhi which will meet the requirements of about 40 lac people.
|
- In addition, 200 Cusecs (108 million gallons per day) of drinking water for towns and villages of U.P. which will meet the requirement of 30 Lac people.
|
|
| · Integrated development of Garhwal region, including construction of a new hill station town with provision of all civic facilities; improved communication, education, health, tourism, development of horticultures, fisheries, and afforestation of the region. |
| S.No. | Description | Generation (MU) |
|---|
| 1 | Generation during August 2026 | 621.74 |
| 2 | Cumulative Generation during FY 2026-27 (up to August 2026) | 1217.42 |
Last Updated on 16/9/2026
