Emergency Generator All hospitals require emergency power for life support and any piece of equipment necessary for operation of the hospital. Emergency generators are normally diesel driven and can be operated in parallel with other generators or operated as a dedicated power supply to separate portions of a hospital. Diesel generators installed in hospitals are large units ranging from 600 hp to 1500 hp and as a result are very expensive to repair or replace. © 2004 The Hartford Steam Boiler Insurance and Inspection Company.     All rights reserved.