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Dlouhé Stráně I

Hydro power plant in Olomoucky, Czech Republic. Approximate location 50.0854, 17.1794.

HydroOlomouckyCzech Republic

Dlouhé Stráně I is a 650 MW hydro power station in Olomoucky, Czech Republic. It is operated by CEZ Group. Based on reported annual generation of 622 GWh, it can supply roughly 177,771 homes. It ranks #10 of 472 Czech Republic power plants by installed capacity. Commissioned in 1996, it is around 30 years old — long-established. 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).

650MW installed capacity
622GWh reported / yr
177,771homes powered
1996commissioned (~30 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1019204.

Reported generation trend

2015: 703 GWh20152016: 711 GWh20162017: 622 GWh2017711 GWh

Annual generation (GWh), 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 warm-summer humid continental climate (Köppen Dfb) — Northern Hemisphere, latitude 50.1°N — which shapes how much energy it can produce and how its output varies through the year.

4.1°Cannual mean temp
5,066heating degree-days (base 18°C)
0cooling degree-days (base 18°C)
977 melevation

Monthly mean temperature

J: -4 °CJF: -4 °CFM: -1 °CMA: 3 °CAM: 8 °CMJ: 11 °CJJ: 13 °CJA: 13 °CAS: 9 °CSO: 5 °CON: 0 °CND: -3 °CD13 °C

Heating degree-days here run 106% 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: 94/100 — 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 #1 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

Location

Coordinates 50.0854, 17.1794 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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