 Microturbines are small combustion turbines approximately the size of a refrigerator with outputs of 25 kW to 500 kW. Where more power is required, the units can be linked together to provide over 1 MW of electricity. They evolved from automotive and truck turbochargers, auxiliary power units for airplanes, and small jet engines and are comprised of a compressor, combustor, turbine, alternator, recuperator, and generator.
 Microturbines offer a number of potential advantages compared to other technologies for small-scale power generation. These advantages include a small number of moving parts, compact size, light-weight, greater efficiency, lower emissions, lower electricity costs, and opportunities to utilize waste fuels. They have the potential to be located on sites with space limitations for the production of power. Waste heat recovery can be used with these systems to achieve efficiencies greater than 80%.
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