Certification isn't a agency prerequisite for EnergySage installers, but it surely's very advised. In the event the installer started Doing work within the solar field ahead of NABCEP was shaped in 2002 and has an extended (and beneficial) background, we should enable them to hitch our Market. California, constituent state https://www.americanarraysolar.com/how-american-array-solar-panel-installation-helped-me-save-on-energy-costs/