Rockville, MD Solar Energy: Panel Permits (2026)

The City of Rockville requires a building permit for all residential solar panel installations. The city participates in the SolarAPP+ automated permitting program, which allows licensed contractors to apply for permits for standard residential rooftop solar and energy storage systems online. SolarAPP+ performs comprehensive code-compliance checks against the 2021 International Residential Code, the 2023 National Electrical Code, and local amendments. Eligible projects receive permits immediately upon payment. Projects are not eligible for SolarAPP+ if they are subject to historic property alteration review or located within a Special Flood Hazard Area. Non-eligible projects follow the standard permit review process through the Inspection Services Division at 240-314-8247. Ground-mounted solar arrays must comply with accessory structure setback requirements. Fire code setbacks from roof edges and ridges are required for firefighter access. Maryland offers a property tax exemption for solar energy systems, and the state's net metering program allows residential customers to receive credits for excess electricity sent to the grid. Federal investment tax credits also apply. Contact Chris Dempwolf at 240-314-8247 or cdempwolf@rockvillemd.gov for solar permitting questions.