Hospital is a place provided by the government or private for the community as a means of health services for the community. As a place to provide health services to the public, hospital buildings must be built properly, safely and comfortably to provide security and comfort to patients to stay in hospital buildings. Safety and comfort from the patient can arise by the good facilities and infrastructure in the hospital, one of them in the installation of hospital electrical installation. Electrical installation within the hospital includes artificial lighting, installation of contacts, grounding system design and building protection from lightning strikes. To avoid installation of over-designed and ineffective electrical installations at Queen Latifa Hospital, an installation system was designed to calculate the hospital's electrical load in detail and accurately. After the design, and calculation of total load power at Queen Latifa Hospital, the total power connected at Queen Latifa Hospital is 1761,6 kVA and active power is 1342,8 kW with power factor equal to 0,78. After multiplied by togetherness factor obtained total of normal electrical load equal to 991,6 kVA and active power equal to 769,1 kW with power factor respectively 0,78. In an effort to improve the power factor of 0.92 installed a bank capacitor of 298,2 kVAR to obtain a total load of 836 kVA. Based on the total load obtained after the power factor improvement, the generator capacity to be installed is 1000 kVA and the transformer capacity used is 1000 kVA.