Each Powerhouse contains two Francis vertical and synchronous generators with a total Guaranteed Net Contracted Capacity (GNCC) of 336 MW for KPSPP I and 348.6 MW for KPSPP II. It is a vertical shaft, horse-shoe shaped structure, excavated below the ground level. The main access is located at El.+6.50 masl, through the Ventilation Building in which at El.+9.90 masl. are located the ventilation equipment for each unit and the elevator room.