Pournari is a 300 MW hydro power station in Epirus, Greece. It is operated by Public Power Corporation SA [100%]. Based on reported annual generation of 186 GWh, it can supply roughly 53k homes. It ranks #32 of 99 Greece power plants by installed capacity. Commissioned in 1981, it is around 45 years old — long-established. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 5.9% 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 WRI1061075.
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 a source-verified 2026 capacity claim: 300 MW for Pournari hydroelectric plant.
GEM · 2026 · operating plant capacity
Data provenance
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000601764; fuel: WRI GPPD
In context: how this plant compares
At 300 MW, Pournari is well above the median hydro plant in Greece (160 MW). 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
- 7%, from 186 GWh of reported generation; the median for 11 hydro plants in Greece that report generation is 12%
- Generation trend
- 281 GWh in 2015 and 186 GWh in 2017 (−34%)
- Highest and lowest year
- 2016: 363 GWh; 2017: 186 GWh
- Share of Greece hydro capacity
- 8.0% of 3,729 MW across 18 plants in this dataset
- Age among peers
- 6 of 16 dated hydro plants in Greece 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 Public Power Corporation SA [100%].
Local climate & thermal context
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a hot-summer Mediterranean climate (Köppen Csa) — Northern Hemisphere, latitude 39.2°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 40% below 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: 34/100 — 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 moderately corrosive environment (estimated ISO 9223 class C3 — Medium), 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 #7 largest hydro power plant of 18 in Greece by capacity.
Greece has 18 hydro power plants in this dataset, together about 3,729 MW of capacity.
Nearby power plants
- Louros Dam · Hydro · 10 MW · Epirus
- Palioklisi Solar Power Plant · Solar · 2 MW · Epirus
- Preveza Solar Power Plant · Solar · 4 MW · Epirus
- Sykia · Hydro · 160 MW · Thessaly
- Messochora · Hydro · 160 MW · Epirus
- Kremasta · Hydro · 437 MW · Central Greece
Location
Coordinates 39.1871, 21.0263 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Pournari?
Pournari is a 300 MW hydro power plant in Epirus, Greece, commissioned in 1981.
How much electricity does Pournari generate?
Pournari generates about 186 GWh of electricity per year.
Who operates Pournari?
Pournari is operated by Public Power Corporation SA [100%].