Certification is just not a business need for EnergySage installers, but it's very recommended. In case the installer started out Doing the job during the solar business ahead of NABCEP was fashioned in 2002 and has a long (and beneficial) reputation, we may still permit them to affix our Market. https://residentialsolarinstallationcalifornia.game.blog/2024/08/23/what-should-you-consider-when-hiring-commercial-solar-contractors/