EirGrid's 30 June 2026 fault-ride-through procedure, capping instantaneous data-centre demand loss at 900 MW, is a system-operator response that sits alongside the CRU's connection conditions, both signalling that Ireland's grid is managing data-centre growth through hard limits rather than open-ended permission.Source: data-centres update 10

Are Labour and Social Democrats calling for a data centre moratorium in Ireland?

Yes. Both parties tabled Dail moratorium motions for debate on 18 June 2026, with Labour's climate spokesperson calling for a data-centre levy to offset energy costs falling on 500,000 households in arrears.Source: Dail record

Why did the CRU reopen data centre grid connections in Ireland?

The CRU reopened large-load connections in early 2026 under CRU2025236, requiring 80% renewables within six years and 100% on-site backup, reversing the previous informal freeze on new connections in the Dublin area.Source: CRU

Background

The Commission for Regulation of Utilities (CRU) reopened large-load grid connections in early 2026 under CRU2025236, requiring new data centres to source 80% of their electricity from additional Irish-sited renewables within six years and carry 100% on-site backup capacity. The reopening brought relief for operators frozen out by the previous moratorium, but the conditions are strict and the timing is complicated: EirGrid's All-Island Resource Adequacy Assessment, published in February 2026, warned that demand will exceed supply at peak across 2026 to 2028. Data centres now account for 32% of national electricity consumption, up from 22% in 2024. Labour and the Social Democrats each tabled Dáil moratorium motions for debate on 18 June, with Labour calling for a data-centre levy to offset costs falling on 500,000 households already in energy-bill arrears. EirGrid's own operational response arrived on 30 June 2026: together with SONI it issued a fault-ride-through procedure capping data-centre demand loss at 900 MW, a hard technical limit that sits alongside the CRU's connection conditions as further evidence of a grid under strain.

The CRU is the statutory regulator for electricity, natural gas, and water in Ireland. It also required EirGrid and ESB Networks to publish a data centre engagement and connection process by 31 March 2026, a Deadline that was not met. The gap between the CRU's instruction and EirGrid's delivery illustrates structural strain in Ireland's energy governance. behind-the-meter operators like Pure DC are not subject to CRU2025236 because they do not draw from the regulated grid.

The CRU's decisions on connection policy shape the viability of every new data centre project in the Republic. Its 80% renewables rule is now in open tension with the adequacy warning from the operator it regulates, placing the CRU at the heart of Ireland's wider debate over whether data centre growth is compatible with both decarbonisation and energy security. EirGrid's new fault-ride-through ceiling reinforces that tension in operational terms, giving the regulator's connection policy a hard capacity backstop it did not have before.