Council · data centres and power
Data centres in Mayo
0
Operating campuses
1 known at any stage
—
Average grid draw, 2025
EPA-reporting sites only
—
Estimated rates a year
—
Metered water, 2025
EPA-licensed sites
1
Planning applications
1 granted · 0 refused · 1 appealed
Campuses
| Avaio Digital Killala | lapsed | — |
Leaflet © OpenStreetMap contributors · Tailte Éireann (CC BY)
Grid headroom in Mayo
309 MVA
Demand headroom at HV stations, summed
33 transformer groups · upper bound
8 of 33
HV transformer groups with none
25 green · 0 capped by parent
237 MVA
At 38 kV
8 transformer groups
41%
Of LV substations with none
1,580 substations
Largest HV transformer groups, then MV, by demand headroom
| Station | Connect at | Demand MVA | Generation MW |
|---|---|---|---|
| ● Dalton T141 | 38 kV | 56.5 | 12.6 |
| ● Glenree | 38 kV | 56 | 0 |
| ● Bellacorick | 38 kV | 51.8 | 14.6 |
| ● Tawnaghmore | 38 kV | 26.8 | 0.1 |
| ● Castlebar | 38 kV | 25 | 0 |
| ● Moy | 38 kV | 13 | 20 |
| ● Carrowbeg | 38 kV | 7.9 | 30.1 |
| ● Dalton T142 | 38 kV | 0 | 17 |
| ● Glenree | MV (10/20 kV) | 17.7 | 2.2 |
| ● Ardnaree | MV (10/20 kV) | 9.1 | 12 |
| ● Westport | MV (10/20 kV) | 8.1 | 0 |
| ● Bellacorick | MV (10/20 kV) | 7.6 | 0 |
headroomcapped by parentnone · size = demand MVA
ESB Networks' indicative transformer headroom, not a connection offer; it ignores upstream circuits and the transmission system. Station capacity Oct 2025, contracts to Aug–Oct 2025, compiled 12/12/2025. How to read it.
Local TDs asking about data centres
Constituency-to-council matching is by name and approximate.