Maritsa 3 power station is a 120 MW coal power station in Khaskovo, Bulgaria. It is operated by TEC Maritsa 3 AD. Based on its capacity (estimated), it can supply roughly 150,171 homes (estimated). It ranks #15 of 43 Bulgaria power plants by installed capacity. Commissioned in 1971, it is around 55 years old — an older, legacy facility. In context, coal supplies about 22.5% of Bulgaria's electricity; the national grid averages 276 gCO₂/kWh (71.9% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1008058.
This facility's annual emissions are roughly equivalent to:
Estimated, not measured: from installed capacity at a typical 50% load factor × a typical coal emission factor (~1000 g CO₂/kWh, IPCC AR5 / US EIA). Actual emissions depend on plant efficiency and running hours.Equivalencies via US EPA Greenhouse Gas Equivalencies.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by TEC Maritsa 3 AD.
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 42.1°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 0% 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: 50/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
In colder climates, uninsulated hot equipment (boilers, turbines, valves, steam lines) loses proportionally more heat to ambient air — exactly the loss Inzonex modular insulation is designed to cut.
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.
The #8 largest coal power plant of 11 in Bulgaria by capacity.
Bulgaria has 11 coal power plants in this dataset, together about 4,859 MW of capacity.
Coordinates 42.0519, 25.6231 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
