Generators provide electricity in areas that aren't connected to main supplies or which require a temporary boost in amperage. Industrial uses include construction or temporary exhibitions, with trailer-mounted units generating enough power for small or mid-sized sites. They can also be deployed for backup power supplies during blackouts or following disasters.
Portable generators are like stand by electricity arrangements which are capable of powering most of the standard 120/240V electric equipment like fan, blower and lights. Some of the portable generator models are equipped with automatic idle control in order to conserve fuel and lower noise levels. They are not very heavy and can be moved or carried by one or two people.