An upgrade to the electric distribution system will cause a power outage for "some" NorthWestern Energy electric customers down in Choteau today (Tuesday) or tomorrow (Wednesday).This work will complete a project which got underway several months ago to improve service reliability for Choteau area customers..The work will be done from 9 AM to 3 PM each day. Don't worry about a thing...customers will be notified with an automated phone message IF they will be impacted by the planned power outage. For more information, please contact the NorthWestern Customer Contact Center at 888 467 2669..