“Vrla II” is situated in the Vrla River riverbed, at the mouth of the Bitvrdja River, and water from this river, as well as water from the Gradski potok Creek and Vrla River, enters the HPP inlet conduit. The HPP was first time synchronized in 1954.
The most important characteristics of the “Vrla II” HPP and its appurtenant structures are given below:
- Reservoir
| Total volume | 0.1 million m3 |
- Conduit
| Tunnel length | 3.568 m |
- HPP
| Tip | storage |
| Maximum head | 153.9 m |
| Minimum head | 136.7 m |
| Installed discharge | 18.5 m3/s |
| Installed power | 11.28 + 13.65 MW |
| Annual electricity generation | 51 GWh |
| Number of units | 2 |
| Turbine type | Francis, vertical |
(Source: PU EPS Web site)