Metro Nashville requires building and electrical permits for solar PV under Metro Code Title 16 and NEC. Metro Codes offers expedited solar permitting. Nashville Electric Service (NES) requires interconnection agreement before activation.
Residential solar installations in Davidson County require a Metro Codes building permit and electrical permit. Metro has adopted the 2018 IRC and 2020 NEC, including fire setbacks (3 ft from roof ridge and edges on gable roofs; reduced clear pathways on hip roofs) and rapid shutdown requirements. Permit applications submitted through Metro ePermits with PV plan showing panel layout, attachment method, inverter, and line diagram. Nashville Electric Service (NES) serves Davidson County and requires a signed interconnection agreement and bi-directional meter before grid connection; NES generally offers net metering under Green Invest program. Rooftop systems in historic overlays require Metro Historical Commission review for visibility from public right-of-way.
Install without permit: retroactive permit plus double fees plus Metro Codes fines. No NES interconnection: NES will not energize; illegal backfeed is dangerous and grounds for disconnection. Fire setback violations: correction order before CO.
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