Russia kept one of its main gas supply routes to Europe shut today stoking fears of winter fuel shortages.
Differences have also emerged between Gazprom and Germany's Siemens Energy over repair work on the Nord Stream 1 pipeline.
Gazprom said Siemens Energy was ready to carry out repairs on the pipeline but that there was nowhere available to carry out the work, a suggestion Siemens Energy denied.
It said it had not been asked to do the job. Siemens Energy has also said that sanctions do not prohibit maintenance.
Before the latest round of maintenance, Gazprom had already cut flows to just 20% of the pipeline's capacity.
"Siemens is taking part in repair work in accordance with the current contract, is detecting malfunctions ... and is ready to fix the oil leaks. Only there is nowhere to do the repair," Gazprom said in a statement on its Telegram channel today.
Siemens Energy said it had not been commissioned to carry out the work but was available, adding that the Gazprom-reported leak would not usually affect the operation of a turbine and could be sealed on site.
"Irrespective of this, we have already pointed out several times that there are enough additional turbines available in the Portovaya compressor station for Nord Stream 1 to operate," a spokesperson for the company said.
Flows through Nord Stream 1 were due to resume early this morning. But hours before it was set to start pumping gas, Gazprom published a photo oof what it said was an oil leak on a piece of equipment.
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What are Europe's alternatives if Russia shuts off gas?
Europe has accused Russia of weaponising energy supplies in what Moscow has called an "economic war" with the West over the fallout from Russia's invasion of Ukraine.
Moscow blames Western sanctions and technical issues for supply disruptions.
The latest Nord Stream shutdown, which Russia says will last for as long as it takes to carry out repairs, added to fears of winter gas shortages that could help tip major economies into recession and energy rationing.
The European Union expects Russia to respect existing energy contracts but is prepared to meet the challenge if it fails to do so, Economic Commissioner Paolo Gentiloni said today.
Gas shortages prompted EU member Sweden to unveil a financial support package for energy firms today.
"If we do not act, there is a serious risk of disruptions in the financial system, which in the worst case could lead to a financial crisis," said Prime Minister Magdalena Andersson.
"Putin wants to create division, but our message is clear: you will not succeed," she said.
G7 finance ministers yesterday agreed to impose a price cap on Russian oil aimed at slashing revenues for Moscow's war in Ukraine while keeping crude flowing to avoid price spikes.
It comes as Ukraine's Zaporizhzhia nuclear power plant was disconnected from its last remaining main power line to the grid.
