SUGAR LAND--October 24, 2013--Researched by Industrial Info Resources (Sugar Land, Texas)--The 402-megawatt (MW) Unit 2 at Keephills Power Station in Duffield, Alberta, shut down on Tuesday, October 22, due to ash hopper buildup in the furnace of the boiler. The station is owned by Transalta Corporation (NYSE:TAC) (Calgary, Alberta).