SunPower

SunPower is a producer of free-piston stirling engines and cryocoolers.

Sunpower, Inc. is a world-leading developer of energy efficient, environmentally friendly, free-piston machines for power generation and cooling. These machines include free-piston Stirling engines and crycoolers, pulse tube cryocoolers and linear compressors. The company comprises manufacturing, contract R&D, and intellectual property licensing departments. Sunpower, Inc. is privately held and operates from their corporate headquarters located in Athens, Ohio USA.