Europe's gas storage is 71.6 per cent full, and the 90 per cent target was never actually lowered

Gas Infrastructure Europe put EU gas storage at 71.64 per cent of capacity, or 810.70 TWh, on the morning of 2 October 2026. That is the buffer Europe carries into the 2026-27 heating season, and it is the arithmetic of a filling season that opened with stocks at about 28 per cent and never closed the gap. Three numbers now govern how the winter is judged: the 90 per cent target that is still written into EU law, the 80 per cent the Commission has urged capitals to adopt, and the 75 per cent floor the regulation permits once every flexibility is used.

The target was not lowered; the flexibilities were invoked

Under the gas storage regulation as amended and extended in September 2025, the 90 per cent target stands, but member states now have from 1 October to 1 December to reach it rather than a single 1 November deadline, and the intermediate filling trajectories are indicative unless member states decide otherwise, according to the European Commission's own description of the rules. Member states may deviate by up to 10 percentage points from the target in difficult market conditions, and the Commission may permit a further 5 points by delegated act where unfavourable conditions persist. That is where 75 per cent comes from: S&P Global Commodity Insights describes it as the theoretical minimum under the revised regulation, not a target in its own right.

On top of that statutory band sits a political signal. In March 2026, Energy Commissioner Dan Jorgensen wrote to capitals that he would "already now invite you to make use of these flexibilities and consider reducing your filling target to 80% as early as possible in the filling season to provide certainty and reassurance to market participants", as reported by Euronews. The Commission has since argued that 80 per cent is sufficient for winter security under current conditions. So the operative number is a recommendation resting on a deviation clause. A shortfall against it will be a matter of political judgement and Commission correspondence, not infringement.

A season that began below 30 per cent

Europe started filling from an unusually empty base. GIE reported EU storage at around 28 per cent, roughly 314 TWh or 29 bcm, on 1 April 2026, and warned that "current market conditions, characterised by low or negative summer-winter price spreads, are not providing sufficient incentives for early and steady gas injections". Reaching levels close to 90 per cent, it said, would require higher LNG imports than in previous years.

ACER, the EU agency for energy regulators, found in April that storage had ended winter below 30 per cent, near a nine-year low, and that 90 per cent would be difficult without additional supply, while 80 per cent was achievable at the then-prevailing LNG import rate of about 11 bcm a month. By July, with storage at about 49 per cent, ACER put the 90 per cent requirement at roughly 13 per cent more LNG than the EU imported in 2025, and again judged 80 per cent reachable on existing volumes.

S&P Global Commodity Insights, citing GIE, put EU stocks at 60.8 per cent on 15 August, a lower percentage for the date than in any of the five preceding years. By late September Euronews reported the EU at around 70 per cent, roughly 12 percentage points below the same point in 2025. The averages conceal a wide national spread: on 2 October, GIE data showed Poland at 99.14 per cent and Italy at 87.26 per cent against Germany at 58.03 per cent, the Netherlands at 58.88 per cent and Latvia at 49.01 per cent.

Qatar is the swing variable

The supply shock behind all of this is the loss of Qatari LNG. Euronews reports flows through the Strait of Hormuz at 15 to 25 per cent of pre-war levels, and, citing ICIS, that Qatar exported just 18 LNG cargoes in the first six months of the war against 509 in the same period a year earlier. September brought a partial reopening: several Qatar-linked LNG tankers crossed Hormuz during the month after no visible crossings in August.

Contractually, little has been restored. QatarEnergy has extended force majeure on deliveries to Italy's Edison until the beginning of December, Montel reported on 28 September; 35 cargoes have been missed since April and Edison has replaced 23 of them, mainly with US volumes. ACER's April scenario work quantified the stakes: if Qatari production remained offline until December 2026, a global LNG supply shortfall of around 26 bcm could arise and EU spot LNG demand could rise to roughly 56 bcm. US LNG now accounts for about 30 per cent of EU gas imports and two-thirds of its LNG.

Price, demand restraint and one date in January

The price has moved accordingly. Euronews put the Dutch TTF benchmark at around EUR72/MWh in late September, up about EUR40/MWh since the United States and Israel struck Iran on 28 February, against EUR30 to EUR31/MWh before the conflict, with a brief move above EUR80/MWh earlier in September. Analysts quoted by Euronews warn of spikes above EUR100/MWh at the peak of winter if Gulf export volumes fail to grow or Norwegian maintenance prolongs export constraints.

With storage fixed for the season, the Commission has turned to demand. Jorgensen's late-September letter invited member states "to consider taking or continuing to take measures that can sustain injections or reduce gas and electricity demand for as long as necessary", while maintaining that there are "currently no immediate risks to security of supply". The regulatory calendar adds one more constraint: imports of Russian LNG under short-term contracts have been prohibited since 25 April 2026, and the prohibition extends to long-term LNG contracts from 1 January 2027 under the phase-out regulation that entered into force on 3 February 2026. That removes a residual supply option at the point in winter when stocks are lowest; the phase-out itself is treated separately.

What to watch

• The GIE and AGSI daily series through October and November, against S&P Global Commodity Insights analysts' projection of about 75 per cent by end-October and Euronews's reported range of roughly 77 to 80 per cent by November.
• Whether QatarEnergy lifts force majeure on Edison and its Asian buyers in December, and whether Hormuz LNG transits build on September's partial reopening.
• German and Dutch filling levels specifically: at 58 per cent each they, not the EU average, determine withdrawal flexibility in a cold spell.
• How the Commission treats member states that finish the 1 December window below 80 per cent.

Sources

• Gas Infrastructure Europe — AGSI storage inventory: EU filling level, 2 October 2026
• Gas Infrastructure Europe — Europe's gas security of supply challenge: weak market signals and global dynamics raise the stakes for winter readiness
• European Commission — Gas storage
• European Commission — REPowerEU: phasing out Russian energy imports
• ACER — The EU will need higher LNG imports to refill gas storage ahead of winter
• ACER — Middle East impact: filling EU gas storage will be expensive in a competitive LNG market
• Euronews — Euronews explains: Does the EU have enough gas for winter?
• Euronews — EU tells countries to curb energy demand as gas prices face winter squeeze
• Euronews — Middle East oil exports rise as LNG traffic through Hormuz picks up
• Euronews — EU pushes early gas refills while easing storage targets on Iran war
• Montel — QatarEnergy extends force majeure on Italy LNG supply to Dec
• S&P Global Commodity Insights — EU gas storage passes 60% full but still lags recent years: GIE
• S&P Global Commodity Insights — EU gas storage passes baseline 75% filling threshold
• Council of the EU — Russian gas imports: Council gives final green light to a stepwise ban