Beacon Power Corporation has shipped, installed and connected a Smart Energy 25 (Gen 4) flywheel energy storage system at a wind farm in Tehachapi, California. The system is part of a wind power/flywheel demonstration project being carried out for the California Energy Commission.

Energy storage and intelligent agent control technology have been identified as key elements of the smart grid, a U.S. DOE-funded and industry-supported initiative to modernize the country's electrical transmission systems.