Power was later restored but Pacific Power is still looking into the cause of the outage.
A spokesperson for the company said updates are being made to the Grants Pass substation and that could be a reason why the outage occurred.
However, they say once the substation is complete, these massive outages should not be an issue moving forward.
The substation is set to finish on December 21.
NBC5 News Reporter Miles Furuichi graduated from Chapman University with degrees in English and Journalism. He received post graduate experience in Los Angeles in photojournalism and commercial photography. He also spent time in Dublin, Ireland working in print journalism and advertising.
Miles is a Rogue Valley native, raised in Ashland. He enjoys hiking, mountain biking and photography.