Power Plants on the Sava River

HPP Mavčiče lies in the valley of the Sava River downstream of Kranj, near the village of Mavčiče. It is a run-of-the-river plant with a concrete gravity dam structure. The reservoir enables daily water accumulation to cover peak demand for electricity. Once the full chain of HPPs on the Sava is built, the reservoir will take on the role of a head pond.

The plant is part of the chain of hydroelectric power plants on the Sava River and houses the control centre for all hydroelectric power plants on the Sava, as well as the maintenance centre for the upper and middle Sava chain. HPP Medvode is located above the confluence of the Sava and Sora rivers, near the village of Medvode. The rise in the water level formed Zbilje Lake at this location.

HPP Vrhovo lies on the plain below the village of Vrhovo and is the first in the chain of hydroelectric power plants on the lower Sava. The dam structure is of the concrete gravity type, with a structural height of 27 m. The plant operates in a daily run-of-the-river regime with a reservoir that serves as the head pond for the lower Sava chain. Once the full chain of HPPs on the Sava is completed, the reservoir will take on the role of an intermediate equalising basin.

HPP Moste has operated as the first power plant on the Sava River since 1952. The dam is a concrete arch-gravity structure located in the narrowest part of the Sava canyon, in the Kavčke gorge below Žirovnica. At 60 m, it is also the highest dam in Slovenia. The reservoir enables weekly equalisation of flows.

sHPP Vrhovo lies on the southern side of the Sava River, in the water inflow to the fish spawning ground. A single unit is installed in the small plant, operating in parallel with the grid, to which it delivers all available energy based on the prescribed constant water inflow of 0.5 m3/s.

sHPP Mavčiče lies on the southern side of the Sava River, in the water inflow to the fish spawning ground. A single unit is installed in the small plant, operating in parallel with the grid, to which it delivers all available energy based on the prescribed constant water inflow of 0.5 m3/s.

The small hydroelectric power plant began operating in 1995 and has been owned by SEL since 2018.

The small hydroelectric power plant began operating in 2018.

The small hydroelectric power plant began operating in 2017.

The small hydroelectric power plant began operating in 1999 and has been owned by SEL since 2021.

SPP Mavčiče consists of 420 PV modules of 170 Wp each, installed on the southern facade and roof of the HPP Mavčiče building.

SPP Medvode consists of 280 PV modules of 210 W each, installed on the roof of the maintenance centre of HPP Medvode.

SPP Vrhovo comprises 360 PV modules of 215 W each, installed on the roof of the HPP Vrhovo powerhouse. SPP Vrhovo 2 comprises 1584 PV modules of 224 W each, installed on the right-bank embankment of the HPP Vrhovo reservoir. At the time of opening, it was the largest solar power plant in Slovenia.

A small run-of-river derivation power plant on the Reka stream with a relatively small installed flow of 0.25 m³/s. Despite its modest output, it harnesses a substantial net head of 64 m.

A run-of-river derivation plant above the village of Rudno, harnessing the Češnjica (also Rudnica) stream. It exploits a relatively high gross head of 52.2 m.

A storage-derivation power plant above the village of Lom near Tržič, harnessing the Lomščica stream. A key feature is the storage reservoir with a useful volume of 62,300 m³.

A run-of-river derivation plant on the Triglavska Bistrica river. Two 400 kW units, installed flow of 3.0 m³/s, and a net head of 26.9 m.

A low-pressure run-of-river derivation plant on the Davča torrent. A key feature is the buried steel pressure pipeline 600 mm in diameter and 656 m long.

A run-of-river derivation plant on the Selška Sora (Sorica creek). A buried steel pressure pipeline 350 mm in diameter and 512 m long is characteristic, with ecological flow ensured through an opening in the concrete weir.

A run-of-river derivation plant on the Sava Bohinjka with two powerhouses (units). Operation requires an ecological flow of 1.1 m³/s through a permanently open bottom outlet of the weir.

The plant harnesses water below the Savica waterfall and has an exceptionally high head: 225.80 m gross / 219.80 m net. The site lies in environmentally sensitive areas of Triglav National Park and Natura 2000.

A run-of-river derivation plant on the Selška Sora with two turbines of different power.

A low-pressure run-of-river derivation plant on the Kokra with a short intake channel. The plant itself is new (2024), while the weir dates back to 1919.

A run-of-river hydropower plant on the Sava in Kranj. Two units with different flows of 14 and 21 m³/s.

A low-pressure run-of-river sHPP on the Tržiška Bistrica without water storage. The intake uses an existing gravel/concrete weir, while the derivation consists of a 300 m concrete pipeline to a surge tank and a 15 m steel pressure pipeline to the powerhouse.

A run-of-river derivation plant on the Kokra in Kranj. An older facility with a low head — main parameters: Qi 5.6 m³/s, gross head 8.6 m, net head 8.3 m.

A low-pressure run-of-river derivation plant on the Pišnica. The system consists of a buried pipeline to the sand trap, a supply channel to the surge tank, and a short pressure pipeline to the powerhouse.