Russian energy giant Gazprom's average daily natural gas supplies to Europe via the TurkStream undersea pipeline declined 13.3 per cent from a year earlier to 44.8 million cubic metres in September, Reuters calculations showed on Thursday.
Turkey is the only transit route left for Russian gas to Europe after Ukraine declined to extend a five-year deal with Moscow that expired in January 2025.
Calculations based on data from European gas transmission group Entsog showed that total Russian gas supplies to Europe via TurkStream stood at 1.34 billion cubic metres last month, down from 1.55 bcm in September 2025.
Russian gas exports fell due to maintenance work on the pipeline section at the Strandzha-2 border entry point through which gas is delivered to Bulgaria. Bulgarian gas transmission operator Bulgartransgaz said the section underwent reconstruction from September 21 to September 26.
For the first nine months of the year, supplies increased by 1.2 per cent to around 13.2 bcm year-on-year.
Gazprom, which has not published its own monthly statistics since the start of 2023, did not respond to a request for comment.
The company's gas exports to Europe sank by 44 per cent last year to just 18 bcm, the lowest since the mid-1970s, following the closure of the Ukrainian route, according to Reuters calculations.
Russian pipeline gas exports to Europe peaked at around 180 bcm per year in 2018-2019.
(Reporting by Reuters, Editing by Louise Heavens)
