Ptolemais is a 660 MW coal power station in West Macedonia, Greece. Based on its capacity (estimated), it can supply roughly 826k homes (estimated). It ranks #12 of 99 Greece power plants by installed capacity. In context, coal supplies about 4.7% of Greece's electricity; the national grid averages 315 gCO₂/kWh (49.7% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1061094.
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 · L100000102007; fuel: WRI GPPD
In context: how this plant compares
At 660 MW, Ptolemais is below the median coal plant in Greece (800 MW). 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.
Key facts
- Share of Greece coal capacity
- 11.1% of 5,921 MW across 8 plants in this dataset
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest coal plants in Greece
Installed capacity (MW), 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 40.5°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 7% 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: 53/100 — this site sits in the mid 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 #5 largest coal power plant of 8 in Greece by capacity.
Greece has 8 coal power plants in this dataset, together about 5,921 MW of capacity.
Nearby power plants
- Kardia power station · Coal · 1,250 MW · West Macedonia
- Ptolemaïda power station · Gas · 1,350 MW · Western Macedonia
- Perdikas · Hydro · 320 MW · West Macedonia
- Amyntaio power station · Coal · 546 MW · West Macedonia
- Mithras · Solar · 6 MW · West Macedonia
- Agios Dimitrios power station · Coal · 1,456 MW · West Macedonia
Location
Coordinates 40.4809, 21.7274 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Ptolemais?
Ptolemais is a 660 MW coal power plant in West Macedonia, Greece.