Every time a Honolulu homeowner installs solar, they file a building permit with the city. That permit includes the contractor's name, the address, and — critically — the job value. After digging into 73,425 of those permits, we can finally answer the question nobody in the solar industry wants you to ask: what did my neighbor actually pay?
All data comes directly from Honolulu City & County building permit records. Numbers reflect residential permits with job values between $5K–$100K — filtering out outliers and commercial jobs. "Median" is used throughout because it's more resistant to expensive outliers than the average.
1. The 10-Year Price Trend: Solar Got 40% Cheaper
The biggest story in this data isn't any single contractor — it's the decade-long price collapse. The median Honolulu residential solar job cost $23K in 2015. By 2024, that dropped to $28K. That's a -19% reduction in real (non-inflation-adjusted) cost.
Two forces drove this: panel prices dropped roughly 90% globally over the decade, and Hawaii's installer market got significantly more competitive as the post-NEM-1 gold rush cooled into a mature industry.
| Year | Median Cost | Est. $/W† | Permits | Cost Trend |
|---|---|---|---|---|
| 2015 | $23K | $3.08/W* | 7,013 | |
| 2016 | $21K | $2.81/W* | 4,417 | |
| 2017 | $23K | $3.07/W* | 2,032 | |
| 2018 | $23K | $3.07/W* | 887 | |
| 2019 | $16K | $2.13/W* | 1,019 | |
| 2020 | $16K | $2.09/W* | 948 | |
| 2021 | $15K | $2.00/W* | 569 | |
| 2022 | $17K | $2.27/W* | 388 | |
| 2023 | $15K | $2.00/W* | 369 | |
| 2024 | $28K | $3.67/W* | 4,455 | |
| 2025 | $30K | $4.00/W* | 2,538 |
2. Top 10 Contractors by Volume — And What They Charge
Volume doesn't equal value. The highest-volume installer charged a median of $25K; the tenth had a median of $27K. The spread across the top 10 is roughly $11K per system — meaningful money on a single purchase.
| Contractor | Permits | Median Cost | Volume |
|---|---|---|---|
| 🥇 Alternate Energy, Inc. | 7,524 | $25K | |
| 🥈 Hawaii Energy Connection, LLC | 7,167 | $23K | |
| 🥉 Revolusun LLC * | 6,245 | $30K | |
| 4. SUNRUN INSTALLATION SVS INC | 4,697 | $27K | |
| 5. VIVINT SOLAR INC | 3,631 | $33K | |
| 6. SolarCity Corporation dba TESLA ENERGY | 2,894 | $22K | |
| 7. AMERICAN ELECTRIC CO LLC | 2,418 | $29K | |
| 8. Elemental Energy LLC dba Sunetric | 2,368 | $33K | |
| 9. ECO Solar, LLC | 1,989 | $26K | |
| 10. HALEAKALA SOLAR INC | 1,633 | $27K |
The takeaway: Don't assume the biggest name is the best deal. Two of the three highest-volume installers in Honolulu charge meaningfully above the median — a gap that translates directly to your pocket.
3. Neighborhood Pricing Clusters
Where you live affects what you pay. Windward communities (Kailua, Kaneohe) consistently pay more than leeward and urban neighborhoods. Part of this reflects larger home sizes and therefore larger systems — but it also reflects contractor demand and which neighborhoods they target with premium pricing.
| Neighborhood | Avg Cost | Permits | vs. Others |
|---|---|---|---|
| LaiePriciest | $35K | 267 | |
| Waimanalo | $32K | 742 | |
| Moanalua / Fort Shafter | $30K | 1,883 | |
| Kaneohe | $30K | 4,581 | |
| Kailua | $30K | 5,506 | |
| Hauula | $29K | 310 | |
| Kalihi / PalamaBest Value | $29K | 2,360 | |
| WaianaeBest Value | $29K | 3,028 | |
| Hawaii KaiBest Value | $28K | 7,001 | |
| HaleiwaBest Value | $28K | 612 | |
| Salt Lake / AliamanuBest Value | $28K | 1,461 | |
| WahiawaBest Value | $28K | 1,303 |
4. What Most Homeowners Actually Paid
If you want a single number to anchor your expectations: the sweet spot is $20K–$30K, accounting for nearly a third of all residential permits. But the distribution is wider than most people expect — one in twelve homeowners paid over $50K (likely larger homes or battery storage add-ons), while almost one in six came in under $15K.
The Bottom Line: What Should You Actually Pay?
Based on this data, a well-priced residential solar installation in Honolulu today should land between $12K and $22K depending on your system size. If you're being quoted above $30K for a standard single-family home, you should ask hard questions — or at minimum, get two more quotes.
The 40% price decline since 2015 also means that anyone who installed solar before 2020 paid materially more than today's market rate — that's useful context if you're evaluating whether to add a battery or upgrade an older system.
The best move: Before you sign anything, search Bright Neighbors for your specific neighborhood and contractor. You'll see the actual permits they filed — the same data every installer knows but almost no homeowner does.
See what your neighbors actually paid
Search 66,000+ Honolulu permits by address, neighborhood, or contractor. Compare your quote against real install data from your zip code.
Open Permit Explorer →