Several areas in Bengaluru, majorly in southern part of the city, will face a power outage on March 6 due to some upgradation work at Banashankari 66/11 substation, Bangalore Electricity Supply Company Limited (BESCOM) said. The power will be disrupted from 10 am to 5.30 pm. Kathriguppe water tank and PP Layout are among the areas that will be affected.