Jakarta Green Building User Guide Volume 4 Electricity System & Vertical Transportation

Electrical power system transports the electricity generated at the source (typically power plants) and supplies it to buildings and its individual systems, such as lighting, cooling, appliances and ventilation.
Buildings up to about five to seven stories typically use hydraulic elevators because of their lower initial cost. Mid-rise buildings commonly use traction elevators with geared motors, while high-rise buildings typically use gearless systems where the motor directly drives the sheave. The energy using components include the motors and controls as well as the lighting and ventilation systems for the cabs.