GIE AGSI+ primary data put EU fill at 37.45% on 22 May, 37.83% on 23 May and 38.21% on 24 May, a steady run of roughly 0.38 to 0.39 pp/day with 432.52 TWh in store against 423.88 TWh two days earlier1. That is double the 0.17 pp/day the bloc recorded a week earlier, and a clear step up from the 0.248 pp/day reading on 7 May. The pace doubling, rather than the fill level it produced, is what the desk should read off the print.
France books storage at 100% under CRE regulation, Italy's ARERA pays a bonus covering the negative summer-winter spread, and the Netherlands injects through state company EBN, so the bulk of the aggregate gain is compelled or subsidised demand rather than arbitrage. The summer-winter strip stayed inverted throughout the window, leaving a commercial operator no intrinsic reason to fill.
At a sustained 0.38 pp/day the bloc lands near 69-70% by 1 November, a material move off the 55-65% the slower pace implied, but on a mandate-dependent footing. The refill unwinds the moment TTF slips back to the low €40s and the regulated cover thins, which loads policy risk onto the storage-linked strip alongside the weather risk. The 22 May print of 3,243 GWh net ran well below the 23-24 May volumes, so a warm-weather demand dip freed cavern space at the same time, and the fill data alone cannot separate that from the mandate effect.
