Ireland Sets a Price for Curtailable Data Centers

Ireland's Commission for Regulation of Utilities has floated a price for the right to turn a data center off the gas network. The proposal, now in public consultation, would discount gas connections for new facilities that accept supply interruptions when national demand peaks.

The Irish Times first reported the proposal, and Data Center Dynamics has since detailed the numbers behind it. CRU analysis found that 17 planned data centers seeking gas connections would add demand equivalent to six 500 MW combined-cycle gas turbine plants, and the regulator has also warned that continued growth could strain Ireland's ability to secure enough gas through severe cold weather.

Under the scheme, a facility would receive an undisclosed tariff discount in exchange for agreeing to temporary power-downs at moments of very high demand, either by postponing energy-intensive tasks or by switching to an alternative fuel source—probably the site's backup diesel generators.

CRU drew a hard line at power generators: offering interruptible connections to them, the regulator said, would transfer an unacceptable level of security-of-supply risk from the gas system to the electricity system. Data centers are different in CRU's telling because they can build flexibility into their operations and absorb interruptions rather than pass them on to the wires.

Gas is not Ireland's first curtailment debate: the moratorium on new data center grid connections in the Dublin area was lifted on condition that facilities provide their own power, likely through on-site gas generation until renewable supply arrives. The proposed discount extends that logic: a data center that accepts an interruptible gas connection becomes a load the system can call on, and the discount is the price the operator receives for that flexibility.

Those connections are still mostly in planning, which gives this consultation a rare chance to set terms before the load reaches the network rather than after it overwhelms it. Most grids learn curtailment the hard way, through emergency measures in a crisis winter; Ireland is trying to price it in advance.

The load is central to the Irish system: reports published in July put data centers at 23 percent of the country's total metered electricity in 2025, and Central Statistics Office data records 7,663 GWh of data center consumption for the year, up 10 percent from 6,973 GWh a year earlier.

Not everyone accepts the regulatory premise: Sinn Féin MEP Lynn Boylan has described the proposal as a "series of workarounds" in place of a moratorium on data center gas connections. The government, for its part, has a parallel planning track: in January it laid out support for co-locating data centers with renewable infrastructure, with plan-led sites expected to reach hundreds of megawatts and focus on the most energy-intensive industrial sectors after 2030.

This is a pricing experiment as much as an energy policy, and the core design choice is which side of the meter carries interruption risk. A gas-fired generator is not in a position to choose when it runs; when the system calls for generation, it is expected to be firm, while a data center can move a computing job to another hour and is therefore the more plausible bearer of curtailment. Asking that side to accept the risk is the right regulatory trade, and the discount is what the system pays for the flexibility it wants.

An interruptible gas tariff is closer to an option than to a commodity contract: the data center pays a discounted tariff and surrenders the right to call on gas at the worst possible moment, while the gas system holds an option to interrupt and pays for it through lower revenue. The undisclosed discount is the option premium, and once set it will reveal what operators think a curtailable connection is worth.

The deal will also divide data centers: a hyperscaler with strict availability commitments may decide that no discount justifies a winter interruption and pay the full tariff for firm gas, while a less mission-critical operator may take the discount and treat curtailment as an operating risk, managed with diesel or with tolerance for downtime. A discount schedule is designed to expose exactly that split.

This publication has argued that the grid is becoming the site-selection filter for data center capital, and Ireland is taking that argument a step further by pricing classes of grid access. Firm gas, interruptible gas, and no gas connection at all become three different products, and the discount is the gap between two of them.

There is a weak joint in the design: if interruptions are frequent, the likely fallback is backup diesel generation, and the climate logic of pairing data centers with renewables erodes with every start of the diesel engines. The regulator should say how often it expects to call on these connections, because the expected frequency is what makes the discount either a bargain or a trap.

The consultation may not settle where the risk should sit, but it can produce a concrete tariff number for interruptible data center demand. That number should be read by every lender underwriting gas-backed data center growth as the cost of choosing to be part of the grid's operating toolkit rather than simply a customer of it.