The G7 and EU will ban Russian gas imports on routes where Moscow has cut supplies, according to officials involved in the negotiations, the first time pipeline gas trade has been blocked by Western powers since the invasion of Ukraine, Report informs via the Financial Times.

The decision, which is to be finalized by G7 leaders at a summit in Hiroshima next week, will prevent the resumption of Russian pipeline gas exports on routes to countries such as Poland and Germany, where Moscow cut off supplies last year and triggered an energy crisis across Europe.

Western powers want to ensure that Russia does not receive a boost to its energy revenues as they attempt to raise economic pressure 15 months after Moscow’s full-scale invasion of Ukraine.

One of the officials, all of whom spoke on condition of anonymity, said the move was “to make sure that partners don’t change their mind in a hypothetical future”.

A draft G7 statement seen by the Financial Times said that the group of leading economies would further reduce their use of Russian energy sources “including preventing the reopening of avenues previously shut down by Russia’s weaponization of energy” at least until “there is a resolution of the conflict”.

While the measures are unlikely to affect any immediate gas flows, it underscores a deep determination in Brussels to make permanent the rapid and painful pivot away from decades of reliance on Russian energy.

The ban is highly symbolic because, at the start of the war, the EU had avoided targeting pipeline flows given their huge dependence on Moscow’s gas. Russia went ahead and cut supplies anyway, sparking a surge in gas prices to more than 10 times their normal level.

But in recent months prices have fallen substantially as Europe successfully cut demand over winter, accelerated the roll out of renewable energy and sourced alternative supplies such as seaborne cargoes of LNG.

Moscow’s share of the European gas imports has fallen from more than 40 percent to less than 10 percent, and a mild winter has boosted gas storage in the EU.

Officials are confident that gas storage, which is already some 60 percent full compared with roughly 30 percent at the same time in 2022, will reach capacity long before the next winter arrives.

Oil pipelines where Russia has cut supplies, including the northern leg of the Druzhba line that supplies refineries in Germany and Poland, could also be blocked under EU measures to prevent a resumption in flows.

The embargo is being discussed by diplomats as part of the EU’s 11th sanctions package. The commission said it would not comment on sanctions discussions or leaks.

One EU diplomat said that the proposal needed more clarification from Brussels to show how the “status quo” would change, particularly as some oil from Kazakhstan flows through Druzhba. “It has to be clear exactly how it would work,” they said.

Berlin and Warsaw, despite having an exemption from sanctions on Russian oil, said that they would voluntarily end deliveries of crude through Druzhba last year although Poland continued to receive supplies until Russia cut off flows in February. German refineries stopped ordering Russian crude from the beginning of this year.