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ARTICLE · 15 JULY 2026

Energy Update: New Requirements For Transmission-connected Demand Facilities

Arthur Cox
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Ireland's Commission for Regulation of Utilities is consulting on Grid Code modification MPID 345, which would impose new fault ride-through requirements on transmission-connected demand facilities, particularly data centres. The proposed compliance and derogation framework includes usage caps and curtailment procedures that could significantly impact customer operations and contractual entitlements under connection agreements.

IrelandEnergy and Natural Resources
Niamh McGovern
Niamh McGovern
James Downey
James Downey
Gillian Carragher
Gillian Carragher
Maeve Crockett
Maeve Crockett
Katrina Donnelly
Katrina Donnelly
Alma Kelly
Alma Kelly
Sarah Barrett
Sarah Barrett
Bob Hughes
Bob Hughes
Alexander de Búrca
Alexander de Búrca
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The CRU is seeking views on supplementary information on Grid Code modification MPID 345 (PDF 17.8 MB) and the impact that the proposed compliance and derogation framework will have on demand customers’ businesses. Further documents are available on the consultation page.

The CRU indicates that when transient faults on the transmission system (causing voltage dips) occur, many data centres automatically and near instantaneously reduce their consumption from the grid and switch to their own temporary back-up power sources, to protect IT systems and processes. EirGrid and SONI (the transmission system operators or “TSOs”) have determined an upper limit for demand loss beyond which system stability is at risk (900 MW).

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This article contains a general summary of developments and is not a complete or definitive statement of the law. Specific legal advice should be obtained where appropriate.

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