The operator of the Nord Stream 1 pipeline says it has resumed its gas flow, but the amount being delivered was not specified. Earlier, Germany's energy regulator said the pipeline will restart at around 30 percent capacity. The gas line was halted for ten days due to annual maintenance. The Nord Stream 1 accounts for more than one-third of Russian natural gas exports to the European Union. The latest developments highlight an increasing gas crisis as European consumers continue to pay high energy bills.