Denmark's parliament has placed data centers at the back of the grid connection queue, a decision that subordinates them to housing, industry, and electrification of transport and heating. Greece has drafted a requirement that data centers source 60 percent of their power from renewables, which functions as a capacity constraint as much as an environmental one given the pace of renewable buildout.
Neither measure bans development. Both change its sequence and its cost, which in a capacity-constrained market amounts to much the same thing.
A Different Philosophy of Allocation
The American approach to large-load interconnection has been procedural: first in the queue, first served, with cost allocation fought out afterwards in rate cases. FERC's reform process, New Jersey's ratepayer class, and PJM's proposed auction are all attempts to make that procedural system price scarcity correctly.
The European approach is substantive. Rather than pricing scarcity, it ranks claimants. A government that has committed to electrifying heating and transport treats grid capacity as a public resource with competing social uses, and decides that compute ranks below heat.
Both approaches are defensible. The distinction matters to operators because they fail differently. A procedural system can be navigated with capital and patience. A substantive ranking cannot be bought out of.
The Transferability Question
Parselion's assessment: explicit queue ranking is the policy instrument most likely to cross the Atlantic next, and the most disruptive if it does. Any jurisdiction that has simultaneously committed to electrification targets and discovered a grid constraint has the motive and the mechanism. Operators planning European capacity should model connection timelines against the assumption that they rank last, and should treat on-site generation as a prerequisite rather than a hedge.