(KLIX)- About 1,334 Idaho Power customers in Twin Falls are without power. According to city dispatch fire crews responded to a blown transformer at Canyon Ridge High school around 2:45pm. Idaho Power has not yet confirmed the cause. Fire crews have since cleared the scene. The outage area roughly covers homes and businesses around Washington St. to Pole Line Rd. The Twin Falls sewer plant is also without power, however, according to the city the sewage plants back up generators are keeping the plant going. Idaho Power expects to have the power back on by 4pm.