Solar Permit Design

State-by-state and DISCOM-by-DISCOM guidance on permit plan sets, AHJ submission and revision cycles — from the team that delivers 500+ stamped sets a year.

Permit Hub 18 articles · 65 glossary terms

Permit design is where most solar installs lose two to four weeks they planned for. Plan sets get returned for ASCE 7-16 vs 7-22 confusion, rapid shutdown ambiguity, missing string sizing math, or DISCOM-format mismatches. This hub collects our long-form permit guides — US state guides, India DISCOM workflows, AHJ submission best practices, and the engineering checks that get plan sets approved on first pass. The goal across every article: shorten the revision cycle. Start with the state or DISCOM guide that matches your active project, then read the corresponding code-references in the compliance hub for the next-level technical detail.

How-To Guides

11 articles in this section.

Fundamentals & Deep Dives

6 articles in this section.

Frequently asked questions

Quick answers to the questions we hear most about solar permit design.

How long does a US solar permit plan set take?
Standard residential turnaround is 3–5 business days for a stamped plan set when site survey data is complete. C&I and ground mount land in 7–14 days depending on structural and electrical complexity.
Which code edition do I design to — NEC 2020 or 2023?
It depends on AHJ adoption. Most California jurisdictions still cite NEC 2020 in 2026; Texas and Florida AHJs are mixed. Always confirm the adopted code edition before sizing rapid shutdown and PV system disconnects.
What is the most common reason for permit rejection?
Missing or inconsistent rapid shutdown labelling, structural ambiguity on attachment spacing for non-standard rafters, and string-sizing math that does not reconcile inverter input voltage windows with module Voc at minimum recorded site temperature.

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