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Reciprocating engines or steam turbines are
relatively simple machines to maintain. A gas turbine is not, and requires a
rather unique maintenance regimen. Visits from factory service technicians
can be expensive, although local service technicians can be trained for
routine maintenance. In either case, service can put the unit out of service
undesirable long periods of time. Therefore, gas turbines should generally
not be specified in situations where the local maintenance staff will not
receive adequate training, or where gas turbines are not typically used for
cogeneration service.
Gas turbines are typically not a good fit in cogeneration applications
requiring frequent starts and stops, as maintenance costs rise rapidly.
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