Certification is not a agency prerequisite for EnergySage installers, however it's very recommended. When the installer started working in the solar industry prior to NABCEP was formed in 2002 and it has a protracted (and constructive) background, we may still allow them to join our Marketplace. “We interviewed a number https://www.americanarraysolar.com/how-to-find-a-versatile-solar-installer/