Sostanj (TEŠ) is a 1,029 MW coal power station in Sostanj, Slovenia. Based on reported annual generation of 3,990 GWh, it can supply roughly 1.1 million homes. It ranks #1 of 10 Slovenia power plants by installed capacity. Its annual emissions of 2,745,945 t CO₂/yr (EU ETS verified (EUTL 2023)) are equivalent to about 640k cars driven for a year. In context, coal supplies about 14.7% 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 WRI1022413.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Capacity provenance
The public capacity above is the current source-record value. A 2026 tracker candidate lists 945 MW for Sostanj power station, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).
Data provenance
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000400641; fuel: WRI GPPD
In context: how this plant compares
Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
2,745,945 t CO₂/yr — in everyday terms
This facility's annual emissions are roughly equivalent to:
Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions per EU ETS verified (EUTL 2023) (measured for US EPA/EU ETS, modelled for Climate TRACE).
Key facts
- Load factor
- 44%, from 3,990 GWh of reported generation
- Generation trend
- 3,631 GWh in 2015 and 3,990 GWh in 2017 (+10%)
- Highest and lowest year
- 2016: 4,134 GWh; 2015: 3,631 GWh
- Share of Slovenia coal capacity
- 82.3% of 1,251 MW across 3 plants in this dataset
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).
Local climate & thermal context
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 46.4°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 33% 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: 70/100 — 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 mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness 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 coal power plant of 3 in Slovenia by capacity.
Slovenia has 3 coal power plants in this dataset, together about 1,251 MW of capacity.
Nearby power plants
- Sostanj power station · Gas · 84 MW · Šoštanj
- TET · Coal · 110 MW · Hrastnik
- Schwabeck · Hydro · 79 MW · Carinthia
- St Andrae power station · Coal · 192 MW · Carinthia
- Energetika Ljubljana · Coal · 112 MW · Ljubljana
- Te-Tol power station · Gas · 114 MW · Ljubljana
Location
Coordinates 46.3723, 15.0534 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Sostanj (TEŠ)?
Sostanj (TEŠ) is a 1,029 MW coal power plant in Sostanj, Slovenia.
How much electricity does Sostanj (TEŠ) generate?
Sostanj (TEŠ) generates about 3,990 GWh of electricity per year.
How much CO₂ does Sostanj (TEŠ) emit?
Sostanj (TEŠ) has measured emissions of about 2,745,945 tonnes of CO₂ per year (EU ETS verified (EUTL 2023)).