As the conflict in Ukraine approaches its fourth anniversary, Europe has successfully navigated its first complete winter without receiving Russian pipeline gas transported via Ukraine. This marks a significant milestone in the continent's efforts to reduce its reliance on Russian energy following the invasion.

Navigating Winter Without Russian Pipeline Gas

The recent peak heating season presented challenges, with regional gas storage volumes across Europe dropping close to minimum levels due to harsh winter conditions. The closure of the Ukraine transit route at the end of 2024 shut off approximately 14 billion cubic meters per annum of supply. Despite this, Europe avoided a severe supply or price crisis. A key factor was the record-high influx of liquefied natural gas imports, which reached 145 Bcm in 2025. This surge was facilitated by weaker Chinese demand and significant supply growth from the United States, particularly from new projects like Venture Global’s Plaquemines. The increased LNG availability helped keep prices relatively stable, with the benchmark TTF price peaking lower this winter compared to the previous year.

Storage Levels and the Upcoming Replenishment Challenge

By mid-February, European gas storage was about 34% full, a notably lower level compared to the same period in previous years. While sufficient to see the region through the remainder of winter, the depleted reserves mean the upcoming summer refill season will require injecting approximately 20% more gas than in the summer of 2025 to meet mandated storage levels for next winter. This additional volume will need to be supplied by higher LNG imports.

The Rising Dominance of US LNG and Associated Concerns

US LNG accounted for 60% of Europe's total LNG imports in 2025, making it the region's largest single supplier. This ramp-up has been crucial in offsetting lost Russian pipeline gas. However, it has also sparked concerns that Europe is merely swapping dependence on one major supplier for another. Analysts note a shift in European perception, from viewing US LNG as a "lifeline" to viewing it more cautiously due to the potential for geopolitical leverage. Nevertheless, fundamental differences exist between reliance on the US and Russia, primarily because the US operates a market economy where government-directed supply cuts to a profitable market are seen as unlikely. A remaining risk is exposure to US supply disruptions from weather events or unplanned outages, which can drive up prices in Europe.

The Path to Phasing Out All Russian Gas

The European Union aims to phase out all Russian gas imports by the end of 2027. The expected significant growth in global LNG capacity by 2026 and 2027 is seen as making this goal achievable for LNG. The main practical challenges involve replacing supply to landlocked Central European countries and enforcing the ban in South-Eastern Europe, where non-EU countries still receive Russian pipeline gas. Phasing out Russian pipeline gas by November 2027 is considered more complicated. A key factor is the timely launch of the Neptun Deep gas field offshore Romania, planned for 2027, which is highlighted as critical for Europe's ability to transition away. Delays or risks associated with its proximity to the conflict zone could impact the timeline.

Regulatory Hurdles and Geopolitical Uncertainties

Potential obstacles to a smooth transition include EU sustainability regulations. Senior Qatari officials have warned that stringent due diligence and methane emission reporting rules could lead to a halt in LNG supplies from Qatar to Europe, presenting a contentious issue. Looking further ahead, the geopolitical landscape remains uncertain. The potential implications of any future peace deal between Russia and Ukraine are unclear, including whether it might involve European concessions on energy imports. One analyst suggested a limited, conditional return of Russian pipeline gas via Ukraine could be a compromise, but with peace talks appearing distant, such scenarios