Ireland has changed what it asks of a data centre before it plugs one in. A new data centre now has to arrive with generation or storage that can cover its biggest possible draw, and 80% of its yearly electricity has to come from new renewable projects in Ireland. Ireland's enterprise minister presents the policy as a way to make the digital boom pay for the green transition.
A data centre is a different kind of neighbour
A town's electricity use rises in the morning, peaks in the evening and falls at night, and the grid is built around that rhythm. A data centre draws almost the same amount all day and all night, and in Ireland most of them are packed into the same corner around Dublin. It is like a factory running three shifts that opens on a street built for houses, except that there are dozens of them. That is why the regulator treats data centres as a class of their own, separate from other big power users.
The numbers show why. Data centres used 23% of all the electricity Ireland measured in 2025, up from 5% in 2015, and homes use 28%. Data centres' use grew 10% in one year while everyone else's grew 2%. That means data centres added roughly 690 million kilowatt-hours, and every home, shop and factory in the country together added about 500 million.
A freeze protects the grid and builds nothing
The Dublin freeze stopped new demand, but it did not create any new supply. The new rule asks for supply first. The generation a data centre brings has to sell into the wholesale electricity market, so when the data centre does not need that power, everyone else on the grid can use it, and the developer earns money from it. A new data centre now adds supply to the grid in the same step that it adds demand.
The minister also describes sites where a wind or solar plant stands beside a data centre and feeds it directly, which needs a private-wire law the government plans to bring forward. That is the same idea taken to its end: the data centre and its power plant become one project.
What carries over to other places
Picture a council in any country with a growing cluster of data centres. It can say no and lose the investment, or say yes and let its neighbours' bills and the local grid carry the cost. Ireland found a third answer, which is yes on the condition that the newcomer builds the power it needs. I expect that condition to spread, because it lets a council say yes without the neighbours paying for it. Companies that build AI data centres will start to count the power plant as part of the building, the way a factory builder counts the loading dock.
For anyone who uses AI at work, the effect is small per person and large in total. The cost of power moves from the neighbours' bills into the price of the AI service, where it belongs. Countries and regions that have a rule like this will be able to keep adding data centres; the ones without it will meet their own freeze. The limit on AI in any country is more and more its electricity, so a rule that gets new power built also decides how much AI that country gets to use.