In the world of electric generators there are many choices in terms of fuel, from gasoline to natural gas to diesel. Diesel generators are often preferable, however, due to the fact that they are more fuel efficient, require less maintenance and pose less of a fire safety threat. This convenient and cost-effective type of power generator can be used for industrial, military and residential purposes, as well as for various emergency situations.

The way that diesel generators work is fairly simple even for the average layperson to understand. The power generator produces electricity with a combination of an alternator and a diesel engine, which requires diesel fuel to operate. The engine's power is indicated in RPMs (revolutions per minute). Diesel generator power is converted through the alternator, resulting in a usable electric current that can power anything from a home to a hospital to a construction site.

It is common to find a diesel generator at a work site, a residential home or a building that doesn't have access to the power grid. In most cases this power is reserved for emergencies, but in some cases (such as in a construction site very far away from the nearest power outlet) it is used as a primary source of power. Electric generators that use diesel power might also be found in transport ships. Obviously, a ship requires a trustworthy source of power to maintain their navigation and propulsion capabilities.

One of the most common uses for diesel generators is for ensuring the uninterrupted supply of power for businesses, hospitals and various municipal service providers that cannot risk the possibility of a power outage. It's always possible for the power grid to fail, and these reliable generators can always be relied upon for a backup. Any organization that controls mission critical applications can benefit from having a diesel generator available as a reliable emergency power source.