How much does solar cost in Mililani, Hawaii?

Based on 6,147 permit records, the median solar installation cost in Mililani is $23,500 ($3.13/W). The middle 50% of installations fall between $15,000 and $30,600.

Who are the top solar installers in Mililani?

Alternate Energy, Inc. leads Mililani in permit volume, followed by Hawaii Energy Connection, and Revolusun. See the full leaderboard at brightneighbors.com/leaderboard.

How do I get a solar quote in Mililani?

Use BrightNeighbors to compare installers active in Mililani, review their permit history and pricing, then request quotes from your shortlist. You can also upload your current quote for a free analysis against Mililani benchmarks.

Solar Costs in Mililani, Oahu — Real Permit Data

Q: Is solar worth it in Mililani?

Mililani homeowners benefit from Hawaii's high electricity rates (among the highest in the US at ~$0.42/kWh), the Hawaii RETITC state tax credit (35%, up to $5,000 per 5kW block), and the federal 30% ITC. A typical Mililani system pays back in 7–9 years.

What Solar Actually Costs in Mililani

The 6,147 permit records filed for Mililani give us a reliable baseline. The middle 50% of installations land between $15,000 and $30,600, with a median of $23,500. Outliers above $30,600 usually involve battery storage or larger commercial-adjacent systems.

Price range — middle 50% of Mililani installs

$15,000
25th pct $23,500
median $30,600
75th pct

After the Hawaii RETITC state tax credit (35%, up to $5,000 per 5 kW block) and the federal 30% ITC, a median-priced Mililani system nets out significantly lower. Use the BrightNeighbors calculator to model your exact credit amount.

Top Solar Installers in Mililani

Permit volume is the clearest proxy for installer experience in a specific neighborhood. These are the contractors with the most completed installations in Mililani:

#	Installer	Permits in Mililani
1	Alternate Energy, Inc.	1,102	View permits →
2	Hawaii Energy Connection,	952	View permits →
3	Revolusun	500	View permits →
4	ECO Solar,	326	View permits →
5	VIVINT SOLAR	242	View permits →

Permit count tells you who's done the work. Price, closure time, and financing options tell you who to hire. See the full comparison on the BrightNeighbors Leaderboard.

How we calculate these numbers: All data comes from Honolulu DPP permit records, cross-referenced with our 68,000+ permit database. Contractor permit counts are deduplicated across both the primary and electrical contractor fields. Costs reflect the value declared on the permit, which closely tracks final installed cost for residential systems.

Is Solar Worth It in Mililani?

Hawaii has the highest residential electricity rates in the US — roughly $0.42/kWh on HECO. A typical Mililani system sized for an average home (7–8 kW) offsets 80–100% of usage and pays back in 7–10 years before tax credits, less than 6 years after.

Hawaii RETITC: 35% state tax credit, up to $5,000 per 5 kW block (refundable election available)
Federal ITC: 30% of total system cost, claimed in the tax year of installation
HECO net metering (CGS+/Smart Export): Export credits offset your next bill at published rates
Property tax exemption: Solar installations exempt from Hawaii property tax assessment

How to Get a Quote in Mililani

Check the Leaderboard: Filter by Mililani to see installers active in your area with their pricing benchmarks.
Build a shortlist: Add 3–5 installers to compare. Request quotes from your shortlist directly through BrightNeighbors.
Analyze your quotes: Upload any quote you receive to get an instant price analysis against Mililani permit benchmarks — before you sign.

See what installers charged in Mililani

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Compare Other Oahu Neighborhoods

How does Mililani compare to the rest of Oahu? Each neighborhood has its own pricing dynamics based on installer competition, roof types, and local demand.