On Thursday, Russian energy giant Gazprom announced it was restarting deliveries of natural gas to China after concluding regular maintenance procedures on the Power of Siberia pipeline.

In a statement the company posted to its Telegram channel, it said, “Scheduled maintenance work on the Power of Siberia gas pipeline has been finished Gas transportation, as planned, has been resumed today.”

On September 21st, Gazprom temporarily halted shipments of gas through the pipeline. The pipeline is closed twice per year, in the spring and autumn under its contractual terms so that it may undergo inspection.

The 3,000km (1,864-mile) pipeline began delivering Russian natural gas to China in 2019 as part of a 30-year deal with China National Petroleum Corporation (CNPC). The $400 billion deal was the largest agreement ever for Gazprom.

The Power of Siberia, which is also referred to as the Eastern Route, has a capacity of 61 billion cubic meters of gas per year, including 38 billion cubic meters for export.

Russia exported 15.5 billion cubic meters of gas to China through the pipeline last year. Russian Deputy Prime Minister Aleksandr Novak said that gas supplies to China through the pipeline will hit 22 billion cubic meters in 2023, as Moscow and Beijing build greater energy cooperation. Since the beginning of the year, Gazprom has been steadily increasing its gas flows through the eastern route, after Beijing and the Kremlin signed a new contract for additional supplies.

Russia and China are also working on the Power of Siberia 2 energy project, which will build an additional gas route that will travel to China through Mongolia.