Certification Just isn't a agency requirement for EnergySage installers, however it's really proposed. In the event the installer begun Functioning while in the solar industry just before NABCEP was formed in 2002 and has a protracted (and constructive) history, we should make it possible for them to hitch our Market. https://www.americanarraysolar.com/what-should-you-consider-when-hiring-commercial-solar-contractors/