Russian gas supply to Europe fell further on Thursday, sparking concerns about refilling storage for winter and igniting a diplomatic tussle as Russian supplier Gazprom blamed Western sanctions for hampering maintenance work.
The drop in supply comes as the leaders of Germany, Italy and France visit Ukraine under pressure to provide Kyiv with more weapons for its war with Russia and back its bid to join the European Union.
On Thursday, Gazprom announced a second cut to supply in as many days along the Nord Stream 1 pipeline to Germany, slashing flows to just 40% of capacity.
Germany's economy minister said the move aimed to sow uncertainty and increase energy prices.
Dutch wholesale gas prices, the European benchmark, jumped by up to 25% on Thursday morning.
Gazprom blamed the cuts on delayed delivery of Siemens Energy equipment undergoing maintenance in Canada. Germany's energy regulator rejected that explanation.
Uniper, Germany’s biggest importer of Russian gas, said deliveries from Russia were down a quarter from agreed volumes, adding that it was able to procure the missing volumes from other sources.
Gas flows to Italy were also down and Czech power utility CEZ said it had observed a similar cut to its Russian gas supply.
Austrian energy firm OMV also said Gazprom had informed it of a reduction in gas deliveries.
The cut to flows comes as the continent looks to fill storage for winter while pledging to reduce its reliance on Russian gas in the future.
Gazprom cutting supply to Germany is a warning signal that could cause problems for Europe's biggest economy this winter, the head of the country's energy regulator told a newspaper on Thursday.
"It would significantly worsen our situation," Klaus Mueller told the Rheinische Post daily.
"We could perhaps get through the summer as the heating season is over. But it is imperative that we fill the storage facilities to get through the winter."
