The deliveries, via the Power of Siberia pipeline from Russia to China, will be raised under an addendum to the sale and purchase agreement for gas for 2023, Russian news agency Interfax reported on Thursday.

Earlier this year, Alexey Miller, the chief executive officer of Gazprom, said that the Russian gas giant accounted for more than half of the rise in China's natural gas imports between January and August this year.

Russia's state gas giant has relied on more natural gas exports to China as sales to Europe have plummeted since the Russian invasion of Ukraine.