Honolulu County, HI Solar Energy: Expedited Solar Permitting (2026)
Key Facts
- Standard review deadline
- 14 calendar days
- Large project deadline
- 28 days (over $50,000)
- Post-correction deadline
- 7 days (14 for large projects)
- Inspection scheduling
- Within 2 working days
- System size covered
- Up to 20 kW rooftop PV
Summary
Honolulu must approve or deny rooftop solar permit applications within 14 calendar days, or 28 days for projects over $50,000.
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(ii) Maximum time limits for approval or denial of a permit application do not apply if the plans are withdrawn by the applicant prior to completion of plan review, in which case the timeline will restart when the plans are resubmitted;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
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-10: Supplement 10, 12-2025 Ordinance No. 25-40 through Ordinance No. 25-56).
Full Breakdown
Under ROH § 18-5.10, the building official must run an internet-based permitting process for clean energy projects, including roof-mounted solar photovoltaic systems generating 20 kW or less. Complete applications must be approved or denied within 14 calendar days (7 days after corrections are submitted), except projects costing more than $50,000, which get 28 days (14 days after corrections). Inspections must be scheduled within two working days of a request.
Violations & Fines
Missing the review deadline does not create an automatic approval; applicants who believe the timeline was missed should escalate through the Department of Planning and Permitting.
Frequently Asked Questions
How fast must Honolulu review a rooftop solar permit?
Does the deadline apply to battery storage too?
Sources & Official References
Other rules in Honolulu County
Compare Honolulu County to another location·View the Hawaii solar energy overview
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