Denmark puts EV chargers before data centres

Every heat pump, EV charger and data centre eventually arrives at the same narrow gate: a cable into the electricity grid and a substation with spare capacity. Denmark has discovered there is not enough spare capacity to go round.

The Danish government plans to replace its first-come-first-served system for grid connections with a priority queue. Households, defence, health services and EV chargers will move up. Foreign data centres will move down (Berlingske). The arithmetic explains the politics. In 2025, grid operator Energinet received applications for 33.5 GW of new capacity, according to figures cited by Danmarks Naturfredningsforening, the Danish environmental group. Peak demand is about 7 GW (Data Center Dynamics). The queue is several times larger than the system it is trying to enter.

A grid connection request does not just signal future demand. It reserves space on the network and can block other projects before a single unit of electricity is used. Data centres alone have claimed roughly 16 GW of Denmark's queue (Danmarks Naturfredningsforening). The government has translated that into domestic terms: the load from one large data centre could instead power 50,000 home heat pumps or 73 motorway EV charging parks (Berlingske). That is a political framing, clearly, but it rests on a real scarcity.

Europe's shared bottleneck

Denmark is only making explicit a problem that is turning up across Europe. Electricity networks, the wires, transformers and substations that carry power from where it is made to where it is used, have become the pinch point for both the green transition and the digital economy. The European Commission estimates that Europe needs about €584 billion in grid investment by 2030 (European Commission). CEER, the body that coordinates national grid regulators, warns that connection queues are now holding back renewable generation, EV charging, industrial electrification and data centres at the same time (CEER).

Ireland knows this argument already. Data centres now consume 22% of national electricity, up from 5% in 2015 (RTÉ). In the Netherlands, about 14,000 businesses are waiting for new or upgraded grid connections (PONT). Italy shows why a queue can exaggerate as well as reveal demand. Grid operator Terna has 84 GW of data-centre connection requests on file, but only 12 projects have moved beyond the application stage (Il Fatto Quotidiano). Speculative projects can sit in the line without drawing power, making the shortage partly physical and partly self-inflicted.

Different deals for the same scarcity

Countries are now striking different bargains over the same constraint. Ireland allows data centres to connect, but only if they source 80% of their power from additional Irish renewables within six years and, for larger sites, bring their own backup generation (William Fry). The Dutch approach asks some users to accept electricity most of the time, rather than all of the time, so the grid can accommodate more customers. Its capacity-sharing system, GOPACS, offers connections guaranteed 85% of the time instead of permanently (GOPACS).

EV charging sits naturally in that world because cars do not all need to charge at the same moment. Ember estimates that about half of EU electric cars could shift charging to periods of high renewable output, turning vehicles into a balancing tool for the grid rather than simply another demand source (Ember).

Data centres are more awkward. Servers run day and night, and the business model depends on reliability. Denmark's industry group, Datacenter Industrien, argues that a blanket demotion is the wrong answer. It says centres should be judged on whether they bring storage, flexible demand or local power supply, rather than being pushed down the queue by category (Børsen).

Who pays the upgrade bill

The unresolved question is who pays for the grid that everyone now says they need. A draft Irish government study warned that grid upgrades linked to data-centre growth could raise household electricity bills by €295–€644 over the period 2025–2034, though the final published report dropped the higher estimates (The Journal). The reason households are pulled into it is the structure of network charges, the regulated fees on every electricity bill that pay for wires and substations.

A data-centre developer may fund its own dedicated substation. The wider transmission upgrades needed to feed an area, however, are spread across all consumers. The large user triggers the investment; the household bill helps absorb it.

Grid access has become industrial policy without much of the language of industrial policy. Governments are deciding which parts of the future economy get reliable grid capacity first, what conditions they must meet, and how much of the cost is carried through ordinary electricity bills. The line item will not say "cloud services."