Certification is not a firm prerequisite for EnergySage installers, however it's very recommended. If your installer started out Doing work within the solar marketplace prior to NABCEP was formed in 2002 and has a lengthy (and favourable) background, we should still allow them to hitch our Marketplace. We carefully Appraise https://www.americanarraysolar.com/4-ways-commercial-solar-contractors-help-their-customers/