Hydro power plant in Wales, United Kingdom. Approximate location 53.1181, -4.1032.
HydroWalesUnited Kingdom
Dinorwig is a 1,800 MW hydro power station in Wales, United Kingdom. It is operated by ENGIE. Based on its capacity (estimated), it can supply roughly 1,802,057 homes (estimated). It ranks #7 of 2,751 United Kingdom power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 1.9% of United Kingdom's electricity; the national grid averages 217 gCO₂/kWh (64.4% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id GBR1000151.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by ENGIE. All plants by this company →
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 53.1°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 46% 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: 78/100 — 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.
The #1 largest hydro power plant of 119 in United Kingdom by capacity.
United Kingdom has 119 hydro power plants in this dataset, together about 6,365 MW of capacity.
Coordinates 53.1181, -4.1032 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
