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ROH §18-5.10

Fast permits for small solar, battery, and EV charging projects

Read the official text at honolulu.gov ↗

This section sets faster permit review deadlines for certain small clean energy projects like rooftop solar, solar water heaters, and EV chargers. It explains what documents are needed, how inspections work, and what happens if the city misses its deadlines.

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The ordinance, as written (Honolulu County) — Expedited permit processing for clean energy projects

A copy, taken August 22, 2026. The version published by Honolulu is the one that governs, and it may have changed since. Check it before relying on anything here.

(a) As used in this section, "clean energy project" means: (1) A solar photovoltaic system, an energy storage system, or an integrated system containing both a solar photovoltaic system and an energy storage system that: (A) Generates 20 kW of new renewable electricity or less; (B) Supplies electricity to the project site under any utility tariff or program; (C) Is certified by UL or another nationally recognized testing laboratory, or is comprised of certified components, and installed according to manufacturer specifications; (D) Is roof-mounted on a building at the project site; (E) Has a battery system with less than 50 gallons of electrolyte capacity, or 1,000 lbs. for lithium-ion and lithium metal polymer; and (F) Is independent of required emergency and standby power systems required by this code; (2) A solar thermal or solar electric hot water heater that: (A) Has a water tank capacity of 120 gallons or less for a single tank system or 240 gallons or less for a double tank system; (B) Provides heated water for use on the project site; (C) Is certified by UL or another nationally recognized testing laboratory, and installed according to manufacturer specifications; and (D) Is structure-mounted on a building at the project site; or (3) An electric vehicle charging station that: (A) Is an AC Level 1 (120 volt) or AC Level 2 (240 volt) device, or a DC fast-charging system; (B) Is certified by UL or another nationally recognized testing laboratory, and installed according to manufacturer specifications; and (C) Is dedicated for use on site by one or more residents of the project site. (b) In reviewing and issuing permits for clean energy projects, the building official shall: (1) Establish an internet-based permitting process by which all permits required for the operation of a clean energy project are approved or denied within 14 calendar days after the submission of a complete application; provided that approval or denial of permit applications must be made within seven calendar days after submittal of required corrections; subject to the following exceptions and requirements. (A) Exceptions to the maximum time limits to approve or deny a permit application are as follows: (i) For clean energy projects that cost in excess $50,000, the project must be approved or denied within 28 calendar days after the submission of a complete application; provided that approval or denial of the permit application must be made within 14 calendar days after submittal of required corrections; (ii) Maximum time limits for approval or denial of a permit application do not apply if the plans are withdrawn by the applicant prior to completion of plan review, in which case the timeline will restart when the plans are resubmitted; (iii) Where the applicant fails to obtain required discretionary permits or approvals; or (iv) Where the applicant fails to submit a complete application, including failure to remit payment of all required fees. (B) If a map is required as a means to determine where the clean energy project will be installed, aerial or satellite photographs will be deemed sufficient if the photographs reasonably show where the installation is occurring on the property; provided that longitude and latitude coordinates must be provided in addition to the aerial or satellite photographs and property lines. (C) Floor plans and elevations are required for plan review, and must show the working clearances required by the electrical code and the utility provider. Elevations must show the required mounting heights of the equipment and the maximum overall height of the installation as required under Chapter 21 and Chapter 21A . (D) Industry-accepted standardized load calculations are sufficient. (E) If plans are required, the plans must comply with § 18-4.3 , but are not required to provide details for adjacent units unrelated to the clean energy project. (F) If the clean energy project includes multiple meters grouped in one readily accessible central location, the installation must include the following: (i) A rapid shutdown mechanism that complies with this code; (ii) Permanent labels that comply with this code, and include a simple diagram of a building with a roof that shows: (aa) The location of the photovoltaic panels; (bb) The location of the batteries; and (cc) The location of the meter. The property owner and the contractor shall update the permanent labels as needed to reflect the current location of system elements, and maintain the permanent labels so they are legible at all times; and (iii) An as-built wiring diagram of the photovoltaic system that is provided to the system owner or the occupant of the unit the system serves. (G) A clean energy project permit application does not require submission of an approved materials and methods exemption; provided that a manufacturer specification sheet, installation and operations manual, and UL or other national testing laboratory certification may be required for new equipment not previously reviewed. (2) Provide a confirmed inspection date within two working days after receipt of the inspection request. Applicants may submit inspection requests through electronic mail or a public online process. Inspection requests must be made by a duly licensed electrician or duly licensed plumber, as applicable, attesting by affidavit to performing or directly supervising the work in compliance with this code and state laws. (3) The building official shall close an issued permit within seven days after the scheduled final inspection of the project if no code deficiencies or violations are discovered. (c) If the building official fails to meet any of the maximum time limits to approve or deny a permit application, the permit application will be deemed approved; provided that: (1) The building official is notified in writing by the project owner, or an agent of the project owner, that the owner or agent requests issuance of the permit, and is prepared to pay any required fees; (2) The building official is notified in writing by the duly licensed electrician or duly licensed plumber, as applicable, who installed the subject system that the building official failed to process the permit application in a timely manner, and the duly licensed electrician or duly licensed plumber, as applicable, provides the building official with a declaration certifying that the installation of the clean energy project complies with this code and state laws; and (3) The declaration is supported by an affidavit with statement, seal, and signature of a duly licensed electrical engineer or duly licensed plumber, as applicable, and an architect or structural engineer. (d) The licensed design professional providing an affidavit pursuant to subsection (c)(3) must possess commercial general liability insurance with minimum coverage of $1,000,000 per event. (e) If the notice, declaration, and affidavit requirements of subsection (c) are satisfied, the building official shall close the permit application. The validity of the permit will be in accordance with § 18-5.3 .
Read the official text at honolulu.gov ↗as published Jan 1, 2026our copy taken Aug 22, 2026

Published by the City and County of Honolulu through American Legal Publishing.

LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.