Key to the Capstone design is its use of air bearings, which provides maintenance and fluid-free operation for the lifetime of the turbine and reduces the system to a single moving part.

[3] Harold A. Rosen, Ben's older brother, was the one of the first to notice the fledgling turbine company, after a friend working at NASA gave him a paper describing the technology.

[6] After Rosen Motors folded, Capstone continued to develop its microturbine as a source of electricity to facilitate distributed generation, spurred by investments from computer technology executives including Ben Rosen, Paul Allen, and Bill Gates,[2] although Capstone did partner with Richard Hilleman to build the CMT-380 hybrid electric supercar, which debuted at the Los Angeles Auto Show in 2009.

[10] In July 2021, the company provided the first hydrogen fueled microturbine to Austrian engineering and construction firm Innovametall Stahl-Und Metallbau to be used at their powder coating facility in Freistadt.

[11] Capstone is a member of the United States Environmental Protection Agency's Combined Heat and Power Partnership, which is committed to improving the efficiency of the nation's energy infrastructure and reducing emissions of pollutants and greenhouse gases.

Their light weight, small size and quick starting time make them ideal as "instant-on" backup power to recharge the main batteries.

An example of a Capstone-powered hybrid vehicle is the Capstone CMT-380, equipped with a 30 kW gas turbine generator running on diesel that recharges Li-Poly batteries when necessary.