Norway has very little pumped hydro, even though they have 50% of all hydro in Europe. The flexibility is gained by just postponing consumption if demand is low

Norway has very little pumped hydro, even though they have 50% of all hydro in Europe. The flexibility is gained by just postponing consumption if demand is low or alternative supply is high. Of course, these days, there is rarely any surplus power being generated, so Norway is just exporting as much as they can spare (and then some).