Brussels: Gas storage across the European Union enters the 2026-27 winter below its historical average, and the Commission says the bloc can still cope. The assessment came on 12 October after a meeting of the Gas Coordination Group, and it rests on a forecast that ENTSOG, the network of gas transmission operators, presented to member states.

The reassurance deserves a closer look. Gas storage matters because it covers the cold spells of late winter, when demand peaks and liquefied natural gas cargoes compete with Asian buyers. This analysis reviews how the shortfall arose, what the refill target demanded, and what the 2026 numbers imply for next summer.

Why gas storage started the season so low

The starting point was weak. On 1 April 2026, EU storage stood at 28% of capacity, lower than at the start of each of the previous three summer seasons, according to the EU Agency for the Cooperation of Energy Regulators (ACER). A low base meant the injection season had to work harder than usual.

Conditions did not help. By 2 July, storage had reached about 49%, a level similar to 2021, and injections ran below both the ten-year summer average and the 2025 pace. ACER also pointed to the conflict in the Middle East, which pushed up gas prices and narrowed the gap between summer and winter prices. A thin spread weakens the commercial incentive to buy gas in summer and hold it for winter.

What the refill target requires from LNG

The Gas Storage Regulation sets a 90% target for 1 November but lets governments aim lower when conditions justify it. ACER’s reading of ENTSOG’s Summer Supply Outlook, published on 7 July, put numbers on the trade-off. Reaching 90% would need LNG imports about 13% above 2025 levels, while an 80% fill looked achievable at 2025 import volumes.

That dependence on LNG is the structural story. Liquefied gas covers roughly half of EU gas imports, which makes the Union the world’s largest LNG buyer. Meanwhile, the REPowerEU gas regulation ended short-term Russian LNG contracts on 25 April 2026 and pipeline contracts on 17 June 2026. Europe therefore had to replace those volumes on global markets in a year of higher prices.

How the winter outlook looks in October 2026

The Commission’s October statement is careful rather than complacent. It says storage sits below historical averages but argues that this winter differs “significantly” from 2021-22, citing diversified supply, larger LNG import capacity and lower demand. The ENTSOG forecast for 2026-27 found that EU infrastructure can handle higher LNG imports to offset the thinner buffer.

Two caveats stand out. First, LNG volumes depend mainly on winter temperatures, and market participants decide whether to import cargoes or draw down stocks. A mild winter eases the pressure, while a cold February does not. Second, ENTSOG stressed that operators should keep adequate gas storage through the season, both to cover late-winter cold snaps and to support refilling next summer.

What to watch before the next injection season

The next test arrives early in 2027, when long-term Russian LNG contracts begin to expire under the same REPowerEU regulation. The Commission has presented its preparations for that step, and it will monitor gas storage, supplies and prices with member states throughout the winter.

Three indicators will matter most: the pace of withdrawals in January and February, the price spread that decides next summer’s injections, and the flexibility governments use under the regulation. If the spread stays narrow, regulators may face the same low starting point in April 2027 that they faced this year. Gas storage policy in 2026 therefore poses a design question as much as a supply question, namely whether a fixed calendar target suits a market that now relies on globally traded LNG.