European natural gas futures climbed to €42 per megawatt-hour on Thursday, June 4, as utilities across Germany, France, and the Netherlands ramped up injection programmes ahead of the winter heating season. European gas storage currently sits at 56% capacity, below the five-year seasonal average of 63%, raising concerns among energy ministers about supply adequacy heading into Q4.

The shortfall partly reflects sustained LNG demand from Asian markets, where Japan and South Korea have been locking in long-term supply contracts at premium prices. Competition for floating cargoes has tightened the Atlantic basin, leaving European buyers to bid more aggressively to secure injections. Norwegian pipeline flows, which account for roughly a third of European supply, have been running slightly below expectations following maintenance-related curtailments at several North Sea fields.

The geopolitical backdrop adds further uncertainty. Although the US-Iran ceasefire has eased broader energy market tensions, questions remain over the longer-term reliability of Middle Eastern LNG transit routes. For industrial consumers across Germany — already grappling with elevated production costs — any sustained rise above €45 per megawatt-hour would trigger a fresh round of demand-side rationing discussions in Berlin.

Analysts at energy consultancy Wood Mackenzie suggest the storage gap could close by late August if LNG spot market prices soften and Norwegian output recovers on schedule. However, a hotter-than-expected June could accelerate power sector gas burn, compressing the injection window and supporting prices through the summer months.