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Grid capacity map of Europe

Spare grid capacity at 33,545 substations, from the operators’ own heatmaps and capacity maps. Green has room, red is full, grey is published but not public yet. Switch between generation and demand, and click a dot for the figure.

Loading the map…

Reading the map

Green means the grid has room. Red means it is full.

Before a solar farm, a battery, a charging hub or a data centre can connect, the substation nearby needs spare capacity. Grid operators publish how much is left, each on its own map and in its own format. This map puts those figures side by side. The switch at the top changes direction: room to feed power in (generation) or to take power out (demand).

Operators call these maps different things: capacity heatmap or headroom map in Great Britain, capaciteitskaart or netcapaciteitskaart in the Netherlands, hosting capacity map in Belgium, Caparéseau in France, aree critiche in Italy, Netzanschlusskarte in Germany, Trafokarte in Austria, capacidad de acceso in Spain and Grid Capacity Map in Denmark. All of them answer the same question, and the ones we read are on this map.

Hosting-capacity figures are indicative and reflect what operators publish. They are not a connection offer; only the operator can confirm capacity for a specific request.

Put the same data in your own product

Every dot is one request away, with the exact figure, its unit, the operator’s date and the licence: /v1/capacity/nearby.

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By country

Grid capacity maps by country

Coloured today: United Kingdom, Belgium, France, Spain, Germany, Austria, Denmark, Italy. Every country page has its own map, its sources and the request that queries it.

Directory

Every operator’s capacity map, by country

The publications behind this map, with a link to each operator’s own page. The ones whose terms allow it are coloured on the map above; the others are one click away on the operator’s site.

AustriaCountry page →

BelgiumCountry page →

DenmarkCountry page →

FranceCountry page →

GermanyCountry page →

IrelandCountry page →

ItalyCountry page →

NetherlandsCountry page →

NorwayCountry page →

PolandCountry page →

PortugalCountry page →

SpainCountry page →

SwitzerlandCountry page →

United KingdomCountry page →

Questions

About the grid capacity map

What is a grid capacity map?
A map of how much more power the electricity grid can take or deliver at each substation. Operators publish them so that people planning solar farms, batteries, chargers or data centres can see where connecting is likely to be easier. They go by many names: heatmaps, headroom maps and hosting capacity maps, a capaciteitskaart in the Netherlands, aree critiche in Italy, Caparéseau in France.
Where do the colours come from?
From each operator's own published figures, read on the operator's schedule. A dot's colour is the largest spare capacity that operator publishes for the substation today, for generation or for demand, in MW or MVA as it publishes them. Click a dot for the exact figure and its date.
Why are some substations grey?
We hold figures for them, but the operator's terms do not yet allow us to show the values. The dot still marks where figures exist, and the popup links to the operator's own map. The dots turn colour as soon as an operator's terms allow it.
Is a green dot a connection offer?
No. Hosting-capacity figures are indicative and reflect what operators publish. They are not a connection offer; only the operator can confirm capacity for a specific request.
How often is the map updated?
Each operator's publication is read on its own schedule, from daily to twice a year. Every figure carries the date the operator published it.
Can I use this data in my own app?
Yes. Every figure on the map is available through the API with its unit, date, methodology and licence, from one request near a point to bulk exports. A free account includes test calls; API keys come with a paid plan.

Independent service. Not affiliated with, endorsed by, or operated by any transmission or distribution system operator. Base map by OpenFreeMap, map data from OpenStreetMap contributors.