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CityRuleLookup provides general information about local ordinances. This is not legal advice. Always verify rules with your local municipality before making decisions.

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Hawaii
Honolulu County
Solar Energy

Solar Energy in Honolulu County, HI (2026)

2 county-level rules, plus city-specific rules for 10 cities in Honolulu County, Hawaii.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Honolulu County. If you live within an incorporated city, that city's own rules apply — see the city list below.

Panel Permits

Honolulu County provides expedited permitting for residential solar PV up to 20 kW under ROH Sec. 18-5.10, with solar readiness mandated island-wide for new single- and two-family dwellings.

Honolulu County Solar Panel Expedited Permit Processing

Some Restrictions

Full ordinance details →Official source ↗

HOA Restrictions

Honolulu County defers to HRS Sec. 196-7, which preempts HOA bans on solar devices for single-family dwellings and townhouses across Oahu, voiding contrary lease or association provisions.

Honolulu County HOA Solar Device Preemption Under State Law

Few Restrictions

Full ordinance details →Official source ↗

Solar Energy by City in Honolulu County

10 cities in Honolulu County have their own solar energy rules. Each link goes to that city's dedicated page with code citations.

2 verified rules • HOA Restrictions, Panel Permits

2 verified rules • HOA Restrictions, Panel Permits

2 verified rules • HOA Restrictions, Panel Permits

2 verified rules • HOA Restrictions, Panel Permits

2 verified rules • HOA Restrictions, Panel Permits

2 verified rules • HOA Restrictions, Panel Permits

2 verified rules • HOA Restrictions, Panel Permits

2 verified rules • HOA Restrictions, Panel Permits

2 verified rules • HOA Restrictions, Panel Permits

2 verified rules • HOA Restrictions, Panel Permits

All Honolulu County ordinances

See every category we cover for Honolulu County — parking, noise, fences, fires, animals, pools, and more.

Honolulu County Ordinance Hub →

More Honolulu County Rules