A power generator (also called a power generator) is an electrical device that is an independent source of electricity. It is mainly used in the event of a power grid failure, consisting of a generator, internal combustion engine, electrical switchgear, fuel tank and control and measurement elements. Due to the application, stationary and portable power generators are distinguished. With this type of equipment, you can, among others, power electronics and household appliances, lamps, central heating furnaces, water pumps, as well as specialized construction tools. Better quality aggregates guarantee a stable current flow, and thus do not expose the powered equipment to damage resulting from sudden voltage surges. Individual models of aggregates differ in power, size and noise level.