Solar Panel Cost in Honolulu, HI (2026)
The average solar panel installation in Honolulu, HI costs $3.35 per watt, or about $20,100 for a typical 6kW residential system before state and local incentives. Over 25 years, going solar in Honolulu can save you an estimated $65,000, with a payback period of around 5 years.
$3.35
Cost per Watt
$20,100
Avg System Cost
5 years
Payback Period
$65,000
25-Year Savings
Solar Panel Costs in Honolulu, HI
Average cost per watt: $3.35 | Payback period: 5 years
| System Size | Estimated Cost | Est. 25-Year Savings |
|---|---|---|
| 4 kW | $13,400 | $43,333 |
| 6 kW | $20,100 | $65,000 |
| 8 kW | $26,800 | $86,667 |
| 10 kW | $33,500 | $108,333 |
| 12 kW | $40,200 | $130,000 |
Why Go Solar in Honolulu?
Honolulu residents currently pay an average of $39.0 cents/kWh for electricity. This is above the national average of 16 cents/kWh, making solar an especially smart investment for homeowners in Honolulu.
With an average of 5.5 peak sun hours per day, Honolulu receives excellent solar irradiance, supporting strong energy production from your rooftop panels throughout the year.
Hawaii offers net metering, which means Honolulu homeowners earn credits on their electricity bill for any excess solar energy sent back to the grid. This can significantly reduce or even eliminate your monthly electricity bill.
Solar Cost FAQs for Honolulu, HI
Ready to Go Solar?
Get a free, no-obligation quote from top-rated installers in your area.
Get Your Free Quote