(Reuters) -Eastbound natural gas flows via the Yamal-Europe pipeline to Poland from Germany resumed on Sunday, pipeline operator data showed on Monday, while Nord Stream 1 supplies to Germany via Russia were suspended.

Exit flows at the Mallnow metering point on the German border resumed late on Sunday and were at 509,617 kilowatt-hours per hour (kWh/h) between 0800 and 0900 CET on Monday, data from operator Gascade showed.

Eastward flows have stopped and resumed several times since the start of September.

Russian flows of gas via the Nord Stream 1 pipeline, which runs under the Baltic Sea to Germany, remained at zero after Russia scrapped a Saturday deadline to resume flows following maintenance, sending gas prices soaring on Monday.

The pipeline historically supplied about a third of the gas exported by Russia to Europe but was running at only 20% of capacity before the outage last week.

Russian gas continues to flow to Europe via Ukraine, however.

Gas producer Gazprom said it will send 42.4 million cubic metres (mcm) of natural gas to Europe through Ukraine via the Sudzha entry point on Monday, unchanged from Sunday.

Nominations for Russian gas flows into Slovakia from Ukraine via the Velke Kapusany border point were about 36.7 mcm per day for Monday, up from 36.3 mcm/day on Sunday, data from the Ukrainian transmission system operator showed.

(Reporting by Eileen Soreng in Bengaluru and Nora Buli in OsloEditing by Tom Hogue and David Goodman)