RANCE is a 240 MW wave and tidal power station in Brittany, France. Based on its capacity (estimated), it can supply roughly 150k homes (estimated). It ranks #67 of 2,216 France power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, the national grid averages 41 gCO₂/kWh (94.9% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1002761.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: WRI GPPD; fuel: WRI GPPD
In context: how this plant compares
This facility converts its energy source into electricity for the grid; its capacity, fuel type and location determine its role in the national power mix.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Local climate & thermal context
This wave and tidal plant converts the motion of waves or tides into electricity. It sits in a temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 48.6°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 8% below 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: 47/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
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.
Site climate & environmental severity
This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
France has 1 wave and tidal power plant in this dataset, together about 240 MW of capacity.
Nearby power plants
- Bonnemain · Solar · 2.1 MW · Brittany
- Trémeheuc · Wind · 12 MW · Brittany
- Yvignac-la-Tour · Wind · 8 MW · Brittany
- Plouasne · Hydro · 5 MW · Brittany
- Plestan · Wind · 14 MW · Brittany
- Saint-Alban · Wind · 10 MW · Brittany
Location
Coordinates 48.618, -2.022 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is RANCE?
RANCE is a 240 MW wave and tidal power plant in Brittany, France.