Solar Plan Review & Inspection

At Texas Power Inspections (TPI), we provide complete combined plan review and inspection services for residential solar photovoltaic (PV) systems across Texas. Our goal is simple — to ensure every solar installation meets the National Electrical Code (NEC), International Residential Code (IRC), and International Fire Code (IFC), as well as the city’s adopted standards.

Every project we review is evaluated for electrical safety, structural integrity, and code compliance under SB 1202, giving contractors and homeowners the confidence that their system is built to last.

What We Review

TPI’s plan review process examines all technical documentation submitted by the installer or contractor to verify code compliance and design accuracy before installation begins.

During plan review, we verify the following:

  • Scaled and dimensioned roof plan: Must show all roof-mounted PV arrays with accurate placement, total roof area, and the percentage of roof coverage.

  • Pathways and setbacks: Confirm required access pathways and ridge setbacks per the IRC/IFC are labeled and dimensioned.

  • Mounting and attachment details: Verify the means of attachment for modules to the roof structure, including side-view detail and hardware specifications.

  • Structural integrity: Ensure inclusion of a Texas-licensed engineer’s letter certifying roof structure, wind load design, and racking compliance.

  • Electrical design: Confirm conductor sizing, overcurrent protection, disconnect locations, rapid shutdown compliance, and labeling per NEC 690.

  • System documentation: Review manufacturer cut sheets for PV modules (UL 1703/61730), Inverters (UL 1741), PCS/EMS (UL 1741 PCS and/or UL3141), and Racking (UL 2703).

  • Rapid Shutdown Compliance: Ensure proper design and use of listed rapid shutdown equipment certified to UL 1741 and UL 3741 standards.

  • Grounding and bonding methods: Verify compliance with NEC 250 and 690.43–690.47.

  • Site plan and one-line diagram: Ensure accuracy of conduit paths, conductor sizes, disconnects, and interconnection method (supply-side or load-side).

What We Inspect

After plan approval, TPI conducts an inspection to ensure the installation matches the approved design and meets all applicable code and safety requirements.

During inspection, we verify:

  • PV modules and inverters are installed and listed to proper UL standards (1703 / 1741).

  • Wiring methods, conduit, and connectors are secure, weatherproof, and properly supported.

  • Grounding and bonding are continuous and corrosion-resistant. Proper bonding at first means of distribution

  • Labeling is permanent, legible, and installed per NEC 690 and manufacturer specs.

  • Roof attachments are properly sealed and spaced according to the approved detail.

  • Rapid shutdown devices are functional and clearly marked.

  • AC/DC disconnects are properly rated and accessible.

  • Service panel connections meet overcurrent and back-feed protection requirements.

  • Utility disconnects are installed and labeled at the service point when required.

  • Fire and access clearances are maintained along roof ridges and pathways.

Important Notice: The inspection and review items listed above are intended to serve as a general guideline and do not represent a complete list of all code, safety, or installation requirements. Additional elements may be included, excluded, or modified based on specific project conditions, system design, or field observations. All code references cited are based on the State of Texas’ currently adopted editions of the National Electrical Code (NEC), International Residential Code (IRC), International Fire Code (IFC), and International Building Code (IBC). Local Authorities Having Jurisdiction (AHJs) may adopt different code editions or amendments that can alter applicable requirements. It is the responsibility of the contractor or system owner to confirm compliance with the locally adopted codes and standards in effect at the time of project submission.