Japan has made it a goal that all new houses be net zero energy by 2030. [ 105 ] The developing company Sekisui House introduced their first net zero home in 2013, and is now planning Japan's first zero energy condominium in Nagoya City, it is a three-story building with 12 units. [ 106 ] There are solar panels on the roof and fuel cells for each unit to provide backup power. [ 106 ]