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 (469 days left).
Gross Cost
$21,700
7kW system
Annual Savings
$6,776
$565/month
Payback Period
3.2 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 $3.10/W and utility rate of $0.52/kWh.
| System | Cost | Savings/yr | Payback |
|---|---|---|---|
| 4 kW | $12,400 | $3,872 | 3.2 yrs |
| 5 kW | $15,500 | $4,840 | 3.2 yrs |
| 6 kW | $18,600 | $5,808 | 3.2 yrs |
| 7 kW(typical) | $21,700 | $6,776 | 3.2 yrs |
| 8 kW | $24,800 | $7,744 | 3.2 yrs |
| 10 kW | $31,000 | $9,680 | 3.2 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
$0.52/kWh
High utility rates make solar especially valuable
Cost Per Watt in HI
$3.10/W
Near national average for installed cost
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 $21,700 before any incentives. This works out to about $3.10 per watt installed. Smaller systems start around $12,400, while larger 10kW systems can cost up to $31,000.
How long is the solar payback period in Honolulu?
The average solar payback period in Honolulu, HI is approximately 3.2 years for a 7kW system. With estimated annual savings of $6,776, 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 $565 per month or $6,776 per year with a standard 7kW solar system. Over 25 years, total savings can exceed $169,400, 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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