Regulation (EU) 2026/261

Regulation (EU) 2026/261 is the European Union's primary legal instrument phasing out pipeline natural gas imports from Russia. It binds from 17 June 2026 for short-term contracts, defined as those concluded before 17 June 2025, while exempting long-term contracts until 30 September 2027. The legal basis is Articles 194(2) and 207 of the Treaty on the Functioning of the European Union, and it was contested in CJEU annulment proceedings filed by Hungary in February 2026 (case C-46/26).

The regulation's scope is narrower than its headline date suggests. Long-term contracts account for the bulk of TurkStream physical flow into Central Europe, leaving that volume legally intact for fifteen months beyond the 17 June binding date. Its companion measure, Implementing Decision (EU) 2026/335, further reduces enforcement scope by exempting six origins from prior authorisation. Together, the two instruments create an architecture that stops a thin slice of short-term contractual flow while preserving the structural Russian pipeline volumes that Central European states depend on.

The regulation is significant as the EU's first binding legal prohibition on Russian pipeline gas rather than a voluntary phase-down target. It establishes the enforcement framework that will determine whether the EU achieves energy independence from Russian pipeline supply before the long-term contract exemption expires in September 2027. Slovakia filed a separate CJEU suspension application arguing the measure required unanimity rather than a qualified-majority vote, making the judicial challenge the key variable for whether the ban holds its current architecture.