Tvrdošín
Aimed to balance run-offs from peak-load operation of the Orava HPP, the small hydroelectric power plant was constructed by the Tvrdošín balancing reservoir. The smaller of the turbo-generators has a maximum usable flow of 5 m3sec-1, i.e. as much as required by the biological flow rate in the Orava river downstream the Orava water work, therefore it is in operation almost continuously. The larger turbo-generators are operated when inflows into the Orava reservoir are higher.
| Category | dam - run-of-river |
| Installed capacity MW | 6,1 |
| Stream | Orava |
| Type of turbine | Kaplan - horizontal |
| Flow rate m3.sec-1 | 2x 30,0 + 1x 5,0 |
| Number of turbo-sets | 3 |
| Commissioned in | 1979 |
| Aver. annual generation GWh | 18,02 |