Ireland's Commission for Regulation of Utilities wants new data centers to take a discount on gas connections in exchange for accepting planned interruptions on the coldest days, with the site's own backup diesel named as the fallback.
The CRU has put the proposal out for public consultation [9], and its own filing describes what a curtailed site does: power down, delay energy-intensive operations, or switch to another fuel, which the CRU expects to be the backup diesel generators already on the pad [5].
Flexibility on paper means deferring energy-intensive work. Deferring it assumes the work is yours to defer, and in a colocation hall it belongs to a tenant holding an availability commitment. The operator's flexibility is a contract term that has to be sold downstream before it can be sold to the gas system. A site that has not done that paperwork starts its generators instead, which changes the fuel, not the load.
The CRU was clear the bargain is on offer to one kind of buyer only. It refused interruptible connections to power generators because that "would transfer an unacceptable level of security of supply risk from the gas system to the electricity system," while saying data centers by comparison could build flexibility into their operations [7][8]. That is a judgment about a category of customer, and it gets tested one tenant contract at a time.
The scale sits in the regulator's own count. Seventeen planned data centers seeking a gas connection are the equivalent of six 500MW combined cycle gas turbines [4], which is 3,000MW [14], arriving at a system the CRU says is likely to strain Ireland's ability to secure enough gas in severe cold weather [3]. On the electricity side no forecast is needed: Central Statistics Office figures put data center consumption at 7,663GWh for the year against 6,973GWh the year before, an increase of 690GWh [13][15], and reports published in July had them at 23 percent of all metered electricity in 2025 [12].
There is a pinch in the sequencing. Dublin's moratorium on new data center electricity connections was lifted on condition that facilities supply their own power, which in the interim means on-site gas generation [10]. That self-supply runs on the gas the regulator now proposes to make interruptible. Sinn Fein MEP Lynn Boylan called the arrangement a series of "workarounds" in place of a moratorium on data center gas connections [11].
Whether a site should sign comes down to two things. First, whether a person who answers your phone can actually stop the load, or whether it belongs to a tenant with an availability guarantee. Second, whether your fallback is something you would run for the length of a cold snap, or the diesel the CRU already named [5]. Only the corner with a genuinely stoppable load and a fallback it can live on should take the money; the other three are buying a monthly saving and selling an availability promise that comes due on the worst night of the year. And since the CRU has not disclosed how large the discount is [6], nobody in any corner can price the trade yet.
