What applies to my job?

Pick the state and the product you build, install, or inspect. The card below answers from each state’s own record.

State

Solar PV in Tennessee

Which codes apply? In Tennessee, solar PV systems fall under the 2017 NEC, the 2018 IRC, the 2021 IBC, and the 2021 IFC.

Rooftop and ground-mounted photovoltaic arrays and their wiring. State record read Oct 19, 2026. Data as of Oct 26, 2026.

Codes that reach solar PV systems

The edition Tennessee enforces for each code that governs the product, and the part of the code that does.

NECNational Electrical Code

2017 NECPartial

in force since Oct 1, 2018

Where it reaches the product. Article 690, solar photovoltaic systems, with 705 for the interconnection and 690.12 for rapid shutdown.

National Electrical Code, 2017 edition (Tennessee Electrical Installations rule, 0780-02-01) · Tenn. Comp. R. & Regs. 0780-02-01-.02

The Tennessee NEC record
IRCInternational Residential Code

2018 IRCPartial

in force since Jul 16, 2020 · Statewide, with exceptions

Where it reaches the product. Section R324, solar energy systems.

International Residential Code, 2018 edition (0780-02-23) · Tenn. Comp. R. & Regs. 0780-02-23-.02

The Tennessee IRC record
IBCInternational Building Code

2021 IBCVerified

in force since Apr 17, 2025 · Statewide, with exceptions

Where it reaches the product. Rooftop structures and the structural load of the array.

International Building Code, 2021 edition (0780-02-02) · Tenn. Comp. R. & Regs. 0780-02-02-.01(1)

The Tennessee IBC record
IFCInternational Fire Code

2021 IFCVerified

in force since Apr 17, 2025 · Statewide, with exceptions

Where it reaches the product. Chapter 12, section 1205, solar photovoltaic power systems and roof access.

International Fire Code, 2021 edition (0780-02-02) · Tenn. Comp. R. & Regs. 0780-02-02-.01(1)

The Tennessee IFC record

Coming next

Nothing is on file ahead for these codes in Tennessee. The changes page lists every move the site tracks.

State or local

NECLocal governments may be authorized to perform electrical inspections (rule 0780-02-01-.20).
IRCTennessee applies the IRC statewide, with exceptions the record lists.
IRCLocal governments may exempt one- and two-family dwellings by a 2/3 vote of the governing body; renovations of existing one- and two-family dwellings are outside the statewide standards.
IBCTennessee applies the IBC statewide, with exceptions the record lists.
IFCTennessee applies the IFC statewide, with exceptions the record lists.

Cities and counties can amend a statewide code, so confirm the edition in force with the local official.

Go deeper

Tennessee laws that name solar PV systems

Statutes, rules, and commission orders are tracked state by state.

No Tennessee law or rule on the site names solar PV systems. The product page shows the states that have one.

For information only. Your local building or fire official decides which code applies. We check state records often but can miss a recent change, so confirm with your official before you design, permit, or install. Terms of use