
| The Concreting of Power Plant was commenced during | May 1969 | 
| Power House Concreting | November 19,1969 | 
| The First turbine spiral casing installation was started during | August 1971 | 
| Installation of the Generator was commenced during | May 1972 | 
| Reservoir filling | August 15, 1972 | 
| Water was admitted into the Balimela power tunnel | May 23, 1973. | 
| The first turbine was put on trial run | At the end of May 1973. | 
| First unit was commissioned | August 14, 1973. | 
| After R & M Commercial Operation of Unit I and II were started | On 15.04.2022 and 29.12.2021 respectively. |