SolarAPP+ expedites the solar permitting process by making it easier for local governments to determine whether a proposed residential solar system is compliant with safety and code standards. If it is, SolarAPP+ will approve the design and issue a permit instantly. If not, SolarAPP+ will decline the application and indicate the issues for the contractor to resolve. Quickly processing standard rooftop solar applications will increase local governments' abilities to handle high volumes of permits more efficiently as demand for solar increases across the country. "This collaboration with UL is a critical first step in meeting our vision to deliver instant permitting nationwide," said Jeffrey Cook, NREL's lead developer of SolarAPP+. He said the goal is to have the software used to cover 90% of all residential solar and solar-plus-storage permits by 2030.