The picture of electric installation planning became the most important aspect that has to be measured accurately and designed well to fit with the valid electrical standard. Based on the reason, the researcher design the electric installation in Grand Zuri Hotel, Padang which has 8 floors. This design covers all of the electric utilities, such as lightning installation and electrical outlet; VAC electrical power supply (arrangement of air and mechanical ventilation); electrical supply (fire alarm, sound system, phone network, and CCTV camera); electrical device supplies (clean water pump, hydrant pump, warm hater and lift); low voltage transformer; and diesel generator. Based on the result of the design, the amount of the power that must be installed is 425 kW with 0.5 of power factor and 850 kVA of reactive power. Based on the total power in the building, the installed transformer capacity and generator must be 600 kVA and must subscribe 526 kVA of PLN electrical power. In order to make the power factor of 0.9, bank capacitor of 600 kVAR be installed with the combination of 10 x 6 kVAR.