Safe and affordable home solar through permitting automation. In 2021, the National Renewable Energy Laboratory launched a collaborative effort with key code officials, authorities having jurisdiction, and the solar industry to develop standardized plan review software that can run compliance checks and process building permit approvals for eligible rooftop solar systems.

SolarAPP+ reduces install times, project cancellations, and creates more access to solar. Developed with safety and efficiency in mind, SolarAPP+ helps the solar industry and local governments streamline and standardize permitting.

Safe and affordable home solar through permitting automation. In 2021, the National Renewable Energy Laboratory launched a collaborative effort with key code officials, authorities having jurisdiction, and the solar industry to develop standardized plan review software that can run compliance checks and process building permit approvals for eligible rooftop solar systems.

Authority Having Jurisdiction Adoption Status Technologies Available PV Permits Issued PV + Storage Permits Issued* Total kW Approved Estimated Time Saved on 1st Permit Review (hours)**

2021年4月28日 · SolarAPP PV Eligibility 4/26/2021 System New Rooftop Residential PV Systems Only Installed by contractor with all licenses required by jurisdiction No building integrated solar systems Electrical Limited to 2017 NEC 600V Max per DC System Size Single phase only No Aluminum Wires Must Use 600V rated PV wire (due to outer diameter > 0.24" (6.1mm))