Circle area is the megawatts

In the market, or energised at distributionContracted, not yet energised

64 batteries drawn at their station or place: 58 from OpenStreetMap’s substations, 6 from GeoNames by name, 9 not placed. Yellow is in the market or energised; blue holds a contract and is not yet energised.

Transmission network400 kV275 kV220 kV110 kV

Every line of 110 kV and up as OpenStreetMap maps it (2,045 lines, 388 substations, 3 more with no voltage mapped left out), read 2026-10-17; the highest voltages at every zoom, the 110 kV web and the substations when zoomed in. Mapped by volunteers from imagery and operators’ maps, so a line can be missing. OpenStreetMap contributors, ODbL.

Ireland and Northern Ireland · SEMO, EirGrid and ESB Networks · SEMO Oct 2026 · EirGrid 5 August 2026 · ESB Networks 1 July 2026

1,049 MW of batteries are registered in the all-island market, in 28 units. 3,838 MW more hold a signed connection agreement and are not yet energised.

SEMO, the market operator, registers every unit in the all-island wholesale market with its capacity, and files 27 of them as battery storage, plus Golagh Battery, which it files as another fuel and which is added by hand as a battery: that is the fleet, both grids, both jurisdictions. EirGrid publishes every generator with a signed transmission connection agreement that is not yet energised, and ESB Networks the same for the distribution grid, with what it has energised: 44 batteries contracted. A market unit’s figure is its registered capacity; a contracted battery’s is maximum export capacity, the connection, never the battery. The Ireland page reads the same registers as tables.

In the market1,049MW · 28 units

Of it in Northern Ireland212MW · 5

Contracted, not yet energised3,838MW · 44 batteries

Largest contracted station340MW · Louth

Showing every battery in the market and in the connection lists. Filter by status, list or batch, or search a name, a station, an owner or a reference.

Every battery in the market and in the lists

Largest first. Click a row to centre the map on its station. A market unit is placed by the place in its name, or by the ESB Networks station of the same battery where the two lists were matched; a contracted battery by its station. Positions are from OpenStreetMap or GeoNames by name; 9 of 73 rows could not be placed and are in the table only.

Battery	Station or place	List	Owner	MW	Registered, signed or energised	Placed by

Sources: SEMO, Registered Capacity report of Oct 2026 and List of Registered Units, fuel type battery storage; EirGrid, Contracted TSO generators, wind and non-wind, correct as of 5 August 2026; ESB Networks, distribution contracted and energised generators and live connection assessments, correct as of 1 July 2026. Read as published; each PDF list checked against its printed total. An ESB energised battery that is a unit in the market is one row, and the row says on what it was matched. Positions from OpenStreetMap (Open Database Licence) and GeoNames (CC BY 4.0), never from the lists. Northern Ireland’s connection lists (SONI, NIE Networks) are not yet held; its market units are.