Slapy

Slapy is a 144 MW hydro power station in Czech Republic, Czech Republic. It is operated by CEZ Group. Based on its capacity (estimated), it can supply roughly 144,164 homes (estimated). It ranks #24 of 472 Czech Republic power plants by installed capacity. Commissioned in 1955, it is around 71 years old — an older, legacy facility. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 2.3% of Czech Republic's electricity; the national grid averages 401 gCO₂/kWh (59.2% low-carbon) (2025).

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1019179.

Capacity vs largest hydro plants in Czech Republic

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

Owner

Operated by CEZ Group. All plants by this company →

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 49.8°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 72% 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: 87/100 — this site sits in the top 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 #4 largest hydro power plant of 8 in Czech Republic by capacity.

Czech Republic has 8 hydro power plants in this dataset, together about 1,827 MW of capacity.

Nearby power plants

• Rýmařov Solar Power Plant · Solar · 1 MW · Czech Republic
• Velký Újezd Solar Power Plant · Solar · 2 MW · Olomoucky
• Příkazy u Olomouce Solar Power Plant · Solar · 2 MW · Olomoucky
• Velký Týnec Solar Power Plant · Solar · 1 MW · Olomoucky
• Otice Solar Power Plant · Solar · 2 MW · Moravskoslezsky
• Radvanice Solar Power Plant · Solar · 2 MW · Olomoucky

Location

Coordinates 49.8237, 17.4342 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.