Fortis BC says power has now been restored to all areas of the Okanagan, with the exception of Keremeos.
Spokesperson Grace Pickell says they are still investigating the exact cause, but at this time are calling it a 'transmission line related event.'
The outage also affected Kelowna, Penticton and the South Okanagan and lasted around 30 minutes before crews were able to get those areas back online.
Large parts of the Okanagan were in the dark Thursday morning.
Outages were reported in Rutland, Oliver, Osoyoos, Summerland and Penticton.
According to the city of Penticton, power has now been restored in their area after the feed to the Westminster Substation went down causing the north end of the city and the downtown core to lose power.
The outage was regional in nature and outside of the City system.
Alongside power provision partners like FortisBC, the City Electric Utility continues to work on the reason behind the power outage.
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More details as they become available.