Russian energy giant Gazprom's average daily natural gas supplies to Europe via the TurkStream undersea pipeline rose 3% from a year earlier to 47.4 MMm3 in May, media calculations showed on Monday.

Turkey is the only transit route left for Russian gas to Europe after Ukraine chose not 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 1.47 Bm3 last month, up from 1.43 Bm3 in May 2025.

For the first five months of the year, supplies increased by 6.4% to around 7.76 Bm3 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% last year to just 18 Bm3, the lowest since the mid-1970s following the closure of the Ukrainian route, according to calculations.

Russian pipeline gas exports to Europe peaked at around 180 Bm3y in 2018–2019.