On 11 May 2026, EU Energy Commissioner Dan Jørgensen took the unusual step of publicly defending a single subsea cable. Speaking to reporters in Brussels, he reaffirmed the European Commission's "crystal clear" backing for the Great Sea Interconnector (GSI) — the 1,208-km HVDC link planned to connect Greece, Cyprus and eventually Israel — and warned that a rival proposal to lay a 95-km cable from the Turkish-controlled north of Cyprus to Turkey lacks Project of Common Interest (PCI) status, cannot draw on EU funding, has been excluded by ENTSO-E from its ten-year network development plan (TYNDP), and would in any case require the consent of Cyprus's EU-certified transmission system operator.
Jørgensen's statement followed ENTSO-E's 15 April 2026 ruling formally rejecting the Turkish Cypriot proposal — a 400 MW bipolar (800 MW total) cable estimated at €382 million — that had been advanced by Turkish Cypriot "energy minister" Olgun Amcaoğlu. ENTSO-E declared that the GSI "is the only interconnector project connecting the Republic of Cyprus" in its plans, and that it would not consider any project lacking the explicit consent of Cyprus's certified TSO, the "sole transmission system operator certified for the entire territory of the Republic of Cyprus under EU law."
The strongest case for the Turkey-TRNC cable
Before unpacking why Brussels and ENTSO-E got this right, the opposing argument deserves a fair hearing. More interconnection, in the abstract, is good policy. Cross-border power links lower wholesale prices, improve security of supply, integrate more renewables and reduce the carbon intensity of isolated grids. Northern Cyprus today depends almost entirely on local diesel and heavy fuel-oil generation; a 95-km link to the Turkish grid would, on paper, deliver cheaper and cleaner electricity to a community of roughly 380,000 people. Advocates also point out that the GSI's own timeline has slipped: Nexans's €1.43-billion supply contract targets first-pole commissioning only in 2028, and the project has been dogged by financing disputes and Turkish naval interference. From a pure infrastructure-economics standpoint, a parallel northern link looks like a redundancy that markets ought to welcome.
Why the certified-TSO rule is not protectionism
The trouble is that the European grid is not run by abstract economics; it is run by a tightly coupled, real-time legal architecture in which every interconnection must have a single, accountable operator on each side. That requirement is not a Brussels invention designed to punish Ankara — it is the load-bearing wall of Regulation (EU) 2022/869 (the TEN-E Regulation) and of the broader internal electricity market directives that govern grid balancing, congestion management, capacity allocation and cyber-incident response. ENTSO-E's TYNDP exists precisely so that every projected flow can be modelled against an N-1 contingency framework with a counterparty that the union can hold to its rulebook.
The Republic of Cyprus's TSO is that counterparty for the whole island under both EU law and international law. A cable terminating in the north — outside the effective control of the certified TSO and inside a territory whose administration is recognised by no UN member state other than Turkey — would not merely be politically awkward. It would create a permanent operational blind spot inside the EU synchronous area: imbalances, frequency excursions and cyber events on the Turkish side would propagate into EU territory without a treaty-bound operator on hand to coordinate the response. ENTSO-E's refusal to entertain a unilateral TEİAŞ application is, in that light, less an act of geopolitical signalling than basic engineering hygiene.
The hybrid-threat overlay
There is also a security dimension that policymakers should not airbrush. On 28 May 2026, GCHQ Director Anne Keast-Butler told an audience at Bletchley Park that Russia is conducting hybrid attacks against the UK and Europe "from the seabed to cyberspace," with subsea cables and energy infrastructure squarely in the threat picture. Turkey is not Russia, but the Eastern Mediterranean has already seen Turkish naval vessels obstruct GSI survey ships in summer 2024 and again in 2025. Embedding a 800-MW asset under the operational control of a state that has actively impeded a PCI project would compound — not reduce — the EU's seabed-resilience problem.
A pro-innovation path that doesn't pretend the rulebook isn't there
A pro-innovation, proportionate-regulation reading of this episode is not that Brussels should loosen its certification regime to accommodate the Turkish Cypriot proposal. It is that the proper channel is open, and the parties should use it: TEİAŞ can apply jointly with the Cyprus TSO under the TEN-E framework at any time, and the EU Commission has previously said it would welcome additional links into Cyprus that respect that procedure. That route is also the one most likely to actually deliver cheaper, cleaner power to northern Cypriot consumers, because it unlocks CEF co-financing — the GSI itself received €657 million in CEF grants and a further €100 million from the Recovery and Resilience Facility, sums no commercial bank will match on a standalone TRNC project.
The lesson generalises beyond Cyprus. As Europe races to wire together a continent-scale grid for offshore wind, hydrogen and Mediterranean solar, every new interconnector will face some version of the question Jørgensen answered on 11 May: who is the counterparty, under whose law, with what redress when something goes wrong? Sound subsea-cable policy will keep insisting on clear answers — not because regulators enjoy saying no, but because grids that cannot answer those questions tend, eventually, to fall over.