Hydro power plant in Wales, United Kingdom. Approximate location 53.1186, -4.1139.
HydroWalesUnited Kingdom
Dinorwig is a 1,728 MW hydro power station in Wales, United Kingdom. It is operated by First Hydro Company. Based on its capacity (estimated), it can supply roughly 1,729,974 homes (estimated). It ranks #9 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 GBR2001139.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by First Hydro 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 #2 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 53.1186, -4.1139 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
