EU Gas Storage Level 2026 — Fill % Trajectory vs the 5-Year Norm
Where the European gas storage level stands now — as a percentage of working capacity — versus the 5-year seasonal norm and the relaxed 80% November 1 refill target. A full-year fill curve from GIE AGSI+ aggregated data, updated through the 2026 refill season.
The EU gas storage level sits at about 37% of working capacity as of late May 2026 — roughly 18 percentage points below the 5-year seasonal norm for this point in the year. European gas storage runs on an annual rhythm: it fills through the summer, peaks around November 1, and draws down through winter. The chart below shows one full cycle — from the start of the 2025–26 heating season to where the 2026 refill is projected to end — measured as the percentage of working storage capacity filled across all EU member states (GIE AGSI+ aggregated). It tracks the current level against the two reference lines that matter for winter supply: the 5-year seasonal norm and the EU's November 1 fill target.
How to read this chart
The blue line is where storage actually went: it started the season near 83% on November 1, 2025, fell steadily through the heating months, and sits at about 37% as of late May 2026 (the solid dot). The dashed blue line is the projected refill at the current injection pace, ending near 67% by November 1, 2026. The grey ghost line is the 5-year seasonal norm — the shape a "normal" year traces — and the green dashed line is the 80% November 1 target. The red shaded wedge is the gap between the projection and that target: a roughly 13-percentage-point shortfall if the current pace holds.
Why storage entered 2026 so low
Two things stacked up. First, a cold tail to the 2025–26 winter pulled storage down faster than usual, so the refill season started from an unusually empty base. Second, the Strait of Hormuz crisis (the strait was closed on February 28, 2026, marked on the chart) tightened the global gas market just as Europe needed to buy: Middle East LNG flows to Europe fell to their lowest since 2019, and near-term gas contracts traded above next-winter prices — which removes the financial incentive to inject now and store for later. Europe has leaned heavily on US LNG to compensate, but the buying has been expensive and the pace has lagged what a normal refill would require.
What the 80% target means — and why it was relaxed
Under the EU Gas Storage Regulation, member states normally must fill storage to 90% by November 1. For the 2026 winter season the mandatory target was relaxed to 80% under the regulation's flexibility provisions, with scope for member states to deviate by up to a further 4% where market conditions are unfavourable. Even against that lower bar, the current refill pace falls short. Hitting 80% from here would require sustained injections of roughly 3,621 GWh/day through the remaining refill window — above the run-rate observed so far this season.
Why it matters
Storage is Europe's buffer against a cold winter or a supply shock. A buffer that ends the refill season near 67% rather than 80% leaves less headroom: it raises the odds of sharp price spikes during winter cold snaps, keeps the continent more exposed to LNG-market competition with Asia, and tightens the link between any further Hormuz disruption and European heating and power costs. A disruption at one node — a closed strait thousands of kilometres away — propagates through the whole system, and an under-filled storage base is one of the clearest channels through which it reaches European households.
This is a standing, regularly-updated view that sits alongside the live EU gas storage tracker, which carries the per-country breakdown and the daily fill figure. The trajectory here is updated as new GIE AGSI+ readings arrive; the projection is a scenario at the current injection run-rate, not a forecast of a fixed outcome, and it will move as the pace of injections changes through the summer. For the methodology behind GEF's storage thresholds and seasonal bands, see the methodology page.