The new Delegated Regulation declares over 200 Projects of Common Interest across electricity, hydrogen, offshore wind, and carbon capture corridors
The new Delegated Regulation replaces Annex VII of the TEN-E Regulation ((EU) 2022/869) with a new Union List of Projects of Common Interest (PCIs) and Projects of Mutual Interest (PMIs). The difference between both categories lays on the PCIs’ nature as cross-border energy infrastructure projects within the EU, identified as necessary to implement the EU’s strategic energy infrastructure priorities; whereas PMIs are equivalent projects developed alongside third countries. The first Union List was established in April 2024, under Delegated Regulation 2024/1041, being completely substituted by this one.
The list covers projects across six infrastructure categories, including electricity interconnections and internal lines, offshore grid networks, hydrogen interconnections and electrolysers, smart electricity grids, smart gas grids, and cross-border CO2 transport networks, organized by eleven geographic priority corridors and three thematic priority areas. These appear either as standalone PCIs/PMIs, or as grouped projects where multiple proposals address the same cross-border bottleneck. These, in turn, are classified as interdependent projects (where all must be built), potentially competing projects (where markets decide between candidates), or competing projects (where only one will be built).
Several projects from the original list have been removed, either because they have entered service by March 2026, because they did not requalify under the applicable criteria, or simply because they were not resubmitted. A number of projects are also listed for transparency as having been merged into other PCIs. Projects new to the list receive new PCI/PMI numbers, with continuing projects retaining their original numbers.
Additional Notes:
The Union List is the operational instrument through which the EU’s energy infrastructure strategy translates into specific named projects with legal status. This second list reflects a significant shift in EU energy priorities, as hydrogen infrastructure now representas a major share of listed projects, with dedicated corridors connecting the Iberian Peninsula, the North basin, Central and Eastern Eyrope, and the Baltic region.
The CO2 transport network category, which covers projects like Northern Lights (Norway), CO2 TransPorts (Rotterdam/Antwerp), ARAMIS, and the Delta Rhine Corridor has also expanded substantially, showing the importance placed on carbon capture and storage by the EU, as part of its industrial decarbonisation strategy. Several other cross-border electricity interconnections involving Ukraine and the Western Balkans are also included as PMIs, linking the list to future enlargement efforts and energy security objectives.
