Number of employees
64
Annual revenue
$6779438
Sunpower is a world leader in free-piston Stirling engines, coolers, and linear compressors. The company was incorporated in 1974 by William Beale, inventor of the free-piston Stirling engine. Sunpower remains a privately held corporation.Sunpower’s intellectual property portfolio underscores the company's leading position in free-piston Stirling engine development, and now includes over 40 U.S. patents and more than 85 related foreign patents.Sunpower has more than 14 licensees and strategic partners in Asia, the Pacific Rim, Europe, South America and across the United States.