ČHE Avče is a 180 MW hydro power station in Kanal, Slovenia. It is operated by Soške Elektrarne Nova Gorica [100%]. Based on reported annual generation of 271 GWh, it can supply roughly 78k homes. It ranks #4 of 10 Slovenia power plants by installed capacity. Commissioned in 2009, it is around 17 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 27.2% of Slovenia's electricity; the national grid averages 183 gCO₂/kWh (78.9% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1022412.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000603311; fuel: WRI GPPD
In context: how this plant compares
Technically it is described as conventional storage. Hydropower converts the energy of falling or flowing water into electricity; output depends on rainfall and reservoir level, and large dams also provide grid balancing and storage.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Load factor
- 17%, from 271 GWh of reported generation
- Generation trend
- 282 GWh in 2015 and 271 GWh in 2017 (−4%)
- Highest and lowest year
- 2015: 282 GWh; 2017: 271 GWh
- Share of Slovenia hydro capacity
- 43.7% of 412 MW across 3 plants in this dataset
- Age among peers
- 2 of 3 dated hydro plants in Slovenia are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Reported generation trend
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Soške Elektrarne Nova Gorica [100%].
Local climate & thermal context
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a subarctic (boreal) climate (Köppen Dfc) — Northern Hemisphere, latitude 46.1°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 36% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.
Climate heat-demand index: 72/100 — this site sits in the top third of the power plants we cover by heating degree-days.
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
Site climate & environmental severity
This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with marine corrosion the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #1 largest hydro power plant of 3 in Slovenia by capacity.
Slovenia has 3 hydro power plants in this dataset, together about 412 MW of capacity.
Nearby power plants
- Gorizia CHP power station · Gas · 70 MW · Gorizia
- La Brava Solar Power Plant · Solar · 13.4 MW · Friuli Venezia Giulia
- Manzano · Solar · 8 MW · Friuli Venezia Giulia
- Duino Mill power station · Gas · 120 MW · UTI Giuliana
- Monfalcone power station · Coal · 336 MW · Friuli Venezia Giulia
- Bagnaria Arsa · Solar · 5 MW · Friuli Venezia Giulia
Location
Coordinates 46.1027, 13.6708 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is ČHE Avče?
ČHE Avče is a 180 MW hydro power plant in Kanal, Slovenia, commissioned in 2009.
How much electricity does ČHE Avče generate?
ČHE Avče generates about 271 GWh of electricity per year.
Who operates ČHE Avče?
ČHE Avče is operated by Soške Elektrarne Nova Gorica [100%].