HPP Portile de Fier I is a 1,161 MW hydro power station in Mehedinti, Romania. It is operated by SC Hidroelectrica; Elektroprivreda Srbije (EPS). Based on reported annual generation of 4,707 GWh, it can supply roughly 1.3 million homes. It ranks #4 of 97 Romania power plants by installed capacity. Commissioned in 1972, it is around 54 years old — an older, legacy facility. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 24.3% of Romania's electricity; the national grid averages 251 gCO₂/kWh (67.5% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1019095.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
The capacity and fuel fields on this page are source-record values from the upstream open dataset. They are useful for identification and ranking, but they have not been upgraded to a 2026 registry/GEM-location verified value.
capacity: WRI Global Power Plant Database source-record (legacy); fuel: WRI source-record fuel
At 1,161 MW, HPP Portile de Fier I is well above the median hydro plant in Romania (219 MW). Technically it is described as run-of-river. 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.
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Operated by SC Hidroelectrica; Elektroprivreda Srbije (EPS).
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 44.7°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 8% 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.
For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness the leading environmental stress.
Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.
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.
The #1 largest hydro power plant of 10 in Romania by capacity.
Romania has 10 hydro power plants in this dataset, together about 3,328 MW of capacity.
Coordinates 44.6733, 22.532 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
HPP Portile de Fier I is a 1,161 MW source-record hydro power plant in Mehedinti, Romania, commissioned in 1972.
HPP Portile de Fier I generates about 4,707 GWh of electricity per year.
Its output is enough to supply roughly 1,344,885 homes.
HPP Portile de Fier I is operated by SC Hidroelectrica; Elektroprivreda Srbije (EPS).
