Supporting customers to get smarter about energy use and save money. The Emerald installer app is a contact-free solution to activate Emerald energy-saving customer accounts, in partnership with the Electricity Advisor IHD install. EMERALD APP SET-UP Contact-free account set-up Ask customers for their latest electricity bill. Customer downloads Emerald app. Automated emails and pairing code sent to customers. Customer energy-saving surveys can be completed easily. Screenshot the completed inst