St. Louis, MO Solar Energy: Panel Permits (2026)
Key Facts
- Permit required
- Yes, before install or modification
- Enforcing office
- Electrical Inspection Section
- Maintenance
- No new permit needed
- Max penalty
- $500 fine or 90 days jail
Summary
St. Louis requires a building permit before installing or modifying any solar photovoltaic power system, enforced by the Electrical Inspection Section.
105.7.21 Solar Photovoltaic Power Systems. A permit is required to install or modify solar photovoltaic power systems. Maintenance performed in accordance with this code is not considered a modification and does not require a permit. These permits shall be enforced by the Division of Building and Inspection Electrical Inspection Section.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 11).
Full Breakdown
Under the city's adopted Fire Code, a permit is required to install or modify a solar photovoltaic power system anywhere in St. Louis. Routine maintenance that follows the code isn't treated as a modification and doesn't trigger a new permit, but the initial install and any later system changes do. The Division of Building and Inspection's Electrical Inspection Section reviews and enforces these permits, separate from the Mechanical and Plumbing Inspection Sections that handle other system permits under the same chapter.
Violations & Fines
Installing or modifying panels without the required permit is a Fire Code violation punishable by a fine up to $500, up to 90 days imprisonment, or both, with each day of continued violation a separate offense.
Frequently Asked Questions
Do I need a permit to install solar panels in St. Louis?
Who enforces the St. Louis solar panel permit?
Sources & Official References
Other rules in St. Louis
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