Gas-fired generation still acts as the main source of flexibility for the European power system and a drop in wind generation over more than a few hours will invariably lift the call on gas-fired power plants (and vice versa). Growing exposure to wind generation in the power sector triggers peaks in gas demand, for which size and duration are hard to predict. Dunkelflaute also tends to happen during colder temperatures in Europe, at times of increased space heating requirements, a second simultaneous gas demand driver, magnifying the power sector demand peaks. While the power sector used to be a source of short-term gas demand flexibility, this has now changed. Gas use for power has become more volatile, somewhat less predictable and importantly, more resilient to peaking gas prices compared to just a few years ago. With deteriorating flexibility on the demand side, the European market requires growing flexibility on the supply side, which came almost exclusively from storage and LNG in 2024.