Microturbines are scaled down versions of industrial gas turbines. As their name suggests, these generating units are very small, and typically have a relatively small electric output. These types of distributed generation systems have the capacity to produce from 25 to 500 kilowatts (kW) of electricity, and are best suited for residential or small scale commercial units.
Advantages to microturbines include a very compact size (about the same size as a refrigerator), a small number of moving parts, light-weight, low-cost, and increased efficiency. Using new waste heat recovery techniques, microturbines can achieve energy efficiencies of up to 80 percent.