As long as they might like to. It’s for the good of the country or something.

Germany dims the lights to cope with Russia gas supply crunch – Fears of winter energy crisis bring calls for shorter showers and cooler swimming pools.
Germany is rationing hot water, dimming its street lights and shutting down swimming pools as the impact of its energy crunch begins to spread from industry to offices, leisure centres and homes.
A huge increase in gas prices triggered by Russia’s move last month to sharply reduce supplies to Germany has plunged Europe’s biggest economy into its worst energy crisis since the oil price shock of 1973.