HawaiiSolar Panel Costs & Savings
Hawaii averages 5.5 hrs of peak sun per day with an average payback period of 4.8 years. Homeowners can save $72,400 over 20 years.
Peak Sun Hours
5.5 hrs
per day
6kW System Cost
$21,000
before incentives
Payback Period
4.8 yrs
average
20-Year Savings
$72,400
estimated
Solar Cost Breakdown in Hawaii
| Item | Amount |
|---|---|
| 6kW System Cost ($3.5/W) | $21,000 |
| Federal Tax Credit (30%) | -$6,300 |
| State Tax Credit (35%) | -$7,350 |
| State Rebate | -$5,000 |
| Net Cost | $2,350 |
Net Metering
Full Net Metering
Electricity Rate
43.18¢/kWh
Avg Monthly Bill
$193/mo
Solar Incentives in Hawaii
Hawaii Net Metering
Hawaii's grid-supply program credits excess solar generation at an approved export rate.
Federal Solar Investment Tax Credit (ITC)
The federal ITC allows homeowners to deduct 30% of solar installation costs from federal taxes. Available for systems installed through 2032, stepping down to 26% in 2033 and 22% in 2034.
Hawaii Solar Tax Credit
Hawaii offers a state income tax credit of 35% for solar systems, capped at $5,000.
Solar Potential by ZIP Code in Hawaii
Compare With Other States
More Data for Hawaii
Frequently Asked Questions
How much do solar panels cost in Hawaii?
A typical 6kW solar system in Hawaii costs approximately $21,000 before incentives. After the 30% federal tax credit ($6,300) and state incentives, the net cost is approximately $2,350.
How long does solar take to pay for itself in Hawaii?
The average solar payback period in Hawaii is 4.8 years, faster than the national average of 9.4 years. After payback, homeowners enjoy free electricity for the remaining system life.
Does Hawaii have net metering?
Hawaii has full net metering. Homeowners receive full retail rate credits for excess solar energy sent to the grid.
How much sun does Hawaii get for solar?
Hawaii averages 5.5 peak sun hours per day, which is 1.0 hours above the national average. A 6kW system produces approximately 12,045 kWh per year.
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Data verified March 2026 · Source: NREL, DSIRE, EIA