Energy efficiency refers to the proper utilization of both electrical energy and thermal energy in the power production process. Capstone microturbines can be easily integrated to capture thermal energy produced from the exhaust to provide a significant economic advantage to end users. Capstone microturbines can achieve overall efficiency levels of up to 80 percent in combined heat and power (CHP) applications and up to 90 percent in combined cooling, heat and power (CCHP) applications.