The Europe-wide STOXX 600 index fell 1.6% by 0713 GMT, while Germany‘s DAX index sank 2.8%.
German utilities including Uniper, RWE, E.ON and PNE dropped between 3.5% and 11%.
Gazprom announced on Friday that the main pipeline to Germany would remain closed indefinitely, against expectations of a restart on Saturday after three days of maintenance work.
The Kremlin blamed European politicians on Sunday for keeping the major gas pipeline shut, saying their economic sanctions had hindered maintenance of the pipeline.
A document seen by Reuters showed European Union countries’ energy ministers will discuss options to rein in soaring energy prices including gas price caps and emergency credit lines for energy market participants. EU ministers will meet on Sept. 9.
Investors also awaited a European Central Bank meeting later in the week, where it is expected to deliver a large 75 basis-point interest rate hike to tame record high inflation.
Energy stocks in Europe rose 1% amid rising oil prices.