The drastic step comes as Germans have been told to expect sky high electricity bills and sweeping gas rationing measures that will affect their day-to-day lives.
In a sign of things to come, Hanover, the capital of Lower Saxony in the north west of the country, will cut off the hot water in public buildings, swimming pools, sports halls and gyms.
Other desperate gas-saving measures include switching off public fountains and blacking out night-time lights on major buildings such as the town hall and museums.
The city’s mayor, Belit Onay, spoke of an ‘imminent gas shortage’ that meant they had to reduce the city’s energy consumption by 15 per cent.
EU prices are at near-record levels amid fears Russia could soon turn off the gas tap completely, with leaders already discussing energy rationing