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HE Formin

Hydro power plant in Zavrc, Slovenia. Approximate location 46.4026, 16.0339.

HydroZavrcSlovenia

HE Formin is a 116 MW hydro power station in Zavrc, Slovenia. Based on its capacity (estimated), it can supply roughly 116,132 homes (estimated). It ranks #6 of 8 Slovenia power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 27.2% of Slovenia's electricity; the national grid averages 183 gCO₂/kWh (78.9% low-carbon) (2025).

116MW installed capacity
116,132homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1022416.

Capacity vs largest hydro plants in Slovenia

ČHE Avče: 180 MW180ČHE AvčeHE Zlatoličje: 126 MW126HE Zlatoli…HE Formin: 116 MW116HE Formin

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Local climate & thermal context

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 46.4°N — which shapes how much energy it can produce and how its output varies through the year.

9.6°Cannual mean temp
3,123heating degree-days (base 18°C)
62cooling degree-days (base 18°C)
331 melevation

Monthly mean temperature

J: -1 °CJF: 1 °CFM: 5 °CMA: 10 °CAM: 14 °CMJ: 18 °CJJ: 19 °CJA: 19 °CAS: 15 °CSO: 10 °CON: 4 °CND: 0 °CD19 °C

Heating degree-days here run 27% 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: 66/100 — 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.

How it compares & nearby plants

The #3 largest hydro power plant of 3 in Slovenia by capacity.

Slovenia has 3 hydro power plants in this dataset, together about 422 MW of capacity.

Nearby power plants

Location

Coordinates 46.4026, 16.0339 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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