Jointly worked on by the two companies since April 2004, the cogeneration system achieves a power generation efficiency of over 45% (LHV and AC net efficiency base), the world's highest level for a 1kw system.

The test will allow both companies to verify system reliability, select issues to focus on for commercialization, perform technical evaluations, and measure energy-saving effects and CO2 reduction in typical homes. The partners are aiming for system commercialization in fiscal 2008.