EU energy ministers have agreed for their countries to cut gas use in case Russia halts supplies.
Following talks on Tuesday, EU members agreed countries should voluntarily reduce gas use by 15% from August to March.
"This was not a Mission Impossible!", tweeted the Czech Republic, which holds the rotating EU presidency.
"The purpose of the gas demand reduction is to make savings ahead of winter in order to prepare for possible disruptions of gas supplies from Russia that is continuously using energy supplies as a weapon," the EU said.
The deal states gas demand reduction would become mandatory if supplies reach crisis levels.