Diesel generators have rightfully established themselves as reliable and inexpensive sources of electricity. They are purchased both for emergency or backup power, and for the main power supply. Many models of diesel generators are designed for long-term continuous operation, for example, to supply power to a residential building or industrial area that does not have an energy source. For such generators, the output power can reach 300 - 700 kW. In addition, they compare favorably in terms of fuel costs and are easier to maintain than gasoline generators.