A power outage in central Oslo is impacting tram services across the city. The outage, currently mapped by power company Elvia, is causing disruptions to the tram network. Specific details regarding the extent of the outage and estimated restoration time have not yet been released. Authorities are working to assess the cause and address the issue. Commuters are advised to expect delays and consider alternative transportation options. Further updates will be provided as they become available from Elvia and Oslo transport officials.