Pipe systems and shut-off devices at the gas receiving station of the Nord Stream 1 Baltic Sea pipeline and the transfer station of the OPAL (Ostsee-Pipeline-Anbindungsleitung) on July 11 2022, in Mecklenburg, Western Pomerania, Lubmin, Germany.

Those turbines have since been allowed to travel to Germany from Canada, where they were being repaired, under a sanctions waiver, the Canadian government said last week.

But Russia could still decide to keep the taps turned off. The country has already stopped delivering gas to several European countries and energy companies, because they have refused Russia's demands to pay for gas in rubles — a move that would put them in breach of European sanctions.

On Tuesday, Russian President Vladimir Putin said during a visit to Iran that Gazprom would "fulfill its obligations in full" in supplying gas to Europe. But he warned deliveries could drop by 20% next week if it does not receive the turbine, according to a report by The Wall Street Journal.

Gazprom confirmed in a Wednesday tweet that it had not yet received the necessary documentation from Siemens, the turbine's manufacturer, to allow for its delivery to Russia.

Siemens told CNN it would not comment on Gazprom's claims.

The ongoing uncertainty over Europe's gas supplies has pushed benchmark gas prices up by about 85% since the invasion in late February, according to the Intercontinental Exchange.

On Wednesday, prices rose 5% to €161 ($165) per megawatt hour as the deadline for the pipeline's reopening inched closer.

Pipe systems and shut-off devices at the gas receiving station of the Nord Stream 1 Baltic Sea pipeline and the transfer station of the OPAL (Ostsee-Pipeline-Anbindungsleitung) on July 11 2022, in Mecklenburg, Western Pomerania, Lubmin, Germany.

Those turbines have since been allowed to travel to Germany from Canada, where they were being repaired, under a sanctions waiver, the Canadian government said last week.

But Russia could still decide to keep the taps turned off. The country has already stopped delivering gas to several European countries and energy companies, because they have refused Russia's demands to pay for gas in rubles — a move that would put them in breach of European sanctions.

On Tuesday, Russian President Vladimir Putin said during a visit to Iran that Gazprom would "fulfill its obligations in full" in supplying gas to Europe. But he warned deliveries could drop by 20% next week if it does not receive the turbine, according to a report by The Wall Street Journal.

Gazprom confirmed in a Wednesday tweet that it had not yet received the necessary documentation from Siemens, the turbine's manufacturer, to allow for its delivery to Russia.

Siemens told CNN it would not comment on Gazprom's claims.

The ongoing uncertainty over Europe's gas supplies has pushed benchmark gas prices up by about 85% since the invasion in late February, according to the Intercontinental Exchange.

On Wednesday, prices rose 5% to €161 ($165) per megawatt hour as the deadline for the pipeline's reopening inched closer.