Solar Panel Cost in Honolulu, HI
Estimated costs and savings for ZIP code 96814 — updated for 2026
Urgent tax credit deadlines
- Section 48E phase-out completes December 31, 2027 — projects must be placed in service by then (515 days left).
Gross Cost
$29,400
7kW system
Annual Savings
$1,694
$141/month
Payback Period
17.4 yrs
Break-even
Peak Sun Hours
6
hrs/day avg
Solar System Cost Breakdown — Honolulu, HI
Estimated costs and savings for different residential solar system sizes in ZIP 96814. Costs based on HI average of $4.20/W and utility rate of $0.13/kWh.
| System | Cost | Savings/yr | Payback |
|---|---|---|---|
| 4 kW | $16,800 | $968 | 17.4 yrs |
| 5 kW | $21,000 | $1,210 | 17.4 yrs |
| 6 kW | $25,200 | $1,452 | 17.4 yrs |
| 7 kW(typical) | $29,400 | $1,694 | 17.4 yrs |
| 8 kW | $33,600 | $1,936 | 17.4 yrs |
| 10 kW | $42,000 | $2,420 | 17.4 yrs |
Solar Production in Honolulu, Hawaii
Average Peak Sun Hours
6 hours/day
Excellent solar resource — among the best in the US
Est. Annual Production (7kW)
13,031 kWh
Based on 6 PSH × 7kW × 365 days × 85% efficiency
Average Utility Rate
$0.13/kWh
Moderate rates — solar still provides solid returns
Cost Per Watt in HI
$4.20/W
Above national avg — get multiple quotes
Solar Panel FAQ — Honolulu, HI
How much do solar panels cost in Honolulu, HI?
A typical 7kW solar system in Honolulu, HI (ZIP 96814) costs approximately $29,400 before any incentives. This works out to about $4.20 per watt installed. Smaller systems start around $16,800, while larger 10kW systems can cost up to $42,000.
How long is the solar payback period in Honolulu?
The average solar payback period in Honolulu, HI is approximately 17.4 years for a 7kW system. With estimated annual savings of $1,694, the system pays for itself and then generates free electricity for the remaining 15-20+ years of its lifespan.
How much can I save with solar panels in 96814?
Homeowners in Honolulu, HI (ZIP 96814) can save approximately $141 per month or $1,694 per year with a standard 7kW solar system. Over 25 years, total savings can exceed $42,350, depending on utility rate increases.
How many peak sun hours does Honolulu get?
Honolulu, HI receives an average of 6 peak sun hours per day. This is above the national average, making solar highly effective in this area.
What size solar system do I need for my home in Honolulu?
The average home in Honolulu, HI needs a 7kW solar system to offset their electricity usage. The exact size depends on your monthly electric bill, roof orientation, and available space. A 7kW system would produce approximately 13,031 kWh annually in ZIP 96814.
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