Certification Is not a company requirement for EnergySage installers, however it's very suggested. In the event the installer began Functioning within the solar business right before NABCEP was formed in 2002 and it has a long (and constructive) history, we should still allow for them to hitch our Market. California, https://www.americanarraysolar.com/what-factors-to-remember-before-installing-solar-system-in-your-home/