Infrastructure

Find the land the grid can actually connect

Grid capacityNew

Every substation on ESB Networks’ capacity heatmap — 46,525 of them — joined to every field in the State. Ask for land within a set distance of spare generation capacity, and get the fields rather than a map of dots.

Data centres

substations: 46,525; substations
medium- and high-voltage stations with spare generation headroom: 422; medium- and high-voltage stations with spare generation headroom
fields of 2 ha+ within 2 km of 5 MW, clear and unbuilt: 13,436; fields of 2 ha+ within 2 km of 5 MW, clear and unbuilt

Search by capacity

Spare capacity within a distance

Pick the headroom you need — 1, 5, 10, 20, 50 MW — and how far the land may be from it: 500 m, 1 km, 2 km, 5 km. The search returns the fields that qualify.

With everything else

Combine it with field size, buildings, flood, designated sites and existing solar, in one search.

Near a power lineNew

A farm can also connect by looping into a line that passes by. Ask for fields within 250 m to 2 km of a 38 kV or 110 kV line, and leave out those with an overhead line across them — 4,919 lines of 38 kV and up, mapped across the State.

Share a solar farm’s connectionNew

A battery beside a solar farm can store power the farm would otherwise lose and send it out later on the same connection. The battery search finds fields within 250 m to 2 km of a solar farm, built or with planning permission — 2,063 fields of 0.5 to 2 ha within 500 m, clear and unbuilt.

Blocked headroom left out

Some substations show headroom that is constrained further up the network. Those are left out of these results and marked where they appear.

See why a field qualified

Capacity on every field

The field card shows the best spare capacity within 500 m, 1 km, 2 km and 5 km, and the nearest substations with spare capacity, by name and distance.

How many substations are behind a searchNew

Fields near the same substation compete for the same capacity. Each search says how many separate substations its fields rely on, and which — so five fields on one substation read as one project, not five.

Substations on the map

The Grid capacity layer shows every substation rated red, amber or green by its headroom — and headroom that is blocked further up the network is shown red, whatever the figure says.

Power lines on the mapNew

Overhead lines and underground cables of 38 kV and up, by voltage — and on each field card, the nearest line and any line across it.

Grid capacity: questions

Where can I find grid capacity in Ireland?

ESB Networks publishes an availability capacity heatmap of its substations. Precedent loads it and joins it to every Land Registry title, so you can search for land within a set distance of spare generation capacity instead of reading the substations one by one.

Does spare capacity mean a site can connect?

No. The heatmap is ESB Networks’ indication of headroom, not a connection offer. Only a connection application to ESB Networks tells you what a site can connect, and on what terms.

Which substations count as having capacity?

Medium- and high-voltage stations with generation headroom that is not blocked further up the network — 422 of them in the current edition. Substations whose headroom is constrained upstream never count as a match.

Built on official public registries

ESB Networks availability capacity heatmap: 46,525 substations, compiled 12 December 2025
OpenStreetMap contributors: positions of medium- and high-voltage substations, matched by name, and 4,919 power lines of 38 kV and up (ODbL)
Tailte Éireann: 3,217,764 Land Registry titles (CC BY 4.0)

Figures are ESB Networks’ published heatmap, compiled 12 December 2025; a connection offer comes only from ESB Networks.

All in one platform

Every feature works on the same map, against the same 31 planning authorities.

See it on your own patch

A short call with the founder, on real sites in the county you work in. About twenty minutes — you will know by the end whether it is any use to you.