An Integrel system will replace a generator of up to about 10kVA. The Integrel generator itself is fitted directly onto the propulsion engine; it occupies very little space and weighs only 15kg. 

The storage batteries that it uses are normally fitted into the same space as the stand alone generator it replaces. A 10.4kWh lithium battery pack for example measures 237 x 650 x 330mm (2 batteries) and only weighs 78kg!