Solar Panel Cost in Honolulu, HI
Updated 2026 guide to solar panel prices, savings, and payback period in Honolulu.
Estimated Solar Savings
Solar Panel System Costs in Honolulu, HI
Below are estimated costs for different solar panel system sizes in Honolulu, including the 30% federal solar tax credit.
| System Size | Cost Before Incentives | Federal Tax Credit (30%) | Net Cost | Est. Annual Production |
|---|---|---|---|---|
| 4 kW | $13,400 | -$4,020 | $9,380 | 8,030 kWh |
| 6 kWMost Popular | $20,100 | -$6,030 | $14,070 | 12,045 kWh |
| 8 kW | $26,800 | -$8,040 | $18,760 | 16,060 kWh |
| 10 kW | $33,500 | -$10,050 | $23,450 | 20,075 kWh |
| 12 kW | $40,200 | -$12,060 | $28,140 | 24,090 kWh |
What Affects Solar Panel Cost in Honolulu?
The average cost of solar panels in Honolulu, HI is approximately $335/watt before incentives. For a typical 6kW residential system, that means a total cost of about $20,100 before the federal tax credit.
After applying the 30% federal Investment Tax Credit (ITC), your net cost drops to approximately $14,070.Honolulu homeowners typically see a payback period of 5 years and save an estimated $65,000 over 25 years.
Factors that affect your cost in Honolulu:
- System size: Larger systems cost more but have a lower cost per watt
- Equipment quality: Premium panels and inverters cost more but offer better efficiency
- Roof complexity: Steep roofs, multiple levels, or shading can increase installation costs
- Local labor rates: Installation costs vary within the Honolulu metro area
- Local permits: Permitting costs and requirements vary by municipality in Honolulu
- Incentives: State and local programs can significantly reduce your out-of-pocket cost
Solar Incentives Available in Honolulu
Federal Solar Investment Tax Credit
30% Federal Tax Credit (ITC)
Hawaii homeowners benefit tremendously from the 30% federal ITC, especially given the state's extremely high electricity rates.
State & Local Incentives
Hawaii State Solar Tax Credit
Tax CreditHawaii offers a state income tax credit for solar energy systems installed on residential properties.
Property Tax Exemption
Property TaxSolar energy systems are exempt from property tax increases in Hawaii.
GEM$ Program (Green Energy Money Saver)
LoanOn-bill financing program that allows homeowners to pay for solar through their utility bill with no upfront cost.
Net Metering
Hawaii has transitioned from traditional net metering to Customer Grid Supply and Smart Export programs, which provide credits for excess solar sent to the grid at varying rates.
AvailableSRECs
Hawaii does not have a traditional SREC market. The state's 100% renewable energy goal by 2045 drives solar adoption through other mechanisms.
Not AvailableGet Your Free Solar Quote
No obligation • Compare top installers
Ready to go solar?
Get free quotes from top installers in your area
Top Solar Companies in Honolulu, HI
Affordable Solar Roof & Air
Sunergy Solutions LLC
Solar Panel Cost FAQ - Honolulu, HI
The average cost of solar panels in Honolulu is approximately $3.35 per watt before incentives. A typical 6kW residential system costs about $20,100 before the 30% federal tax credit, bringing the net cost to around $14,070.
The typical payback period for solar panels in Honolulu is approximately 5 years. After that, you'll enjoy free electricity for the remaining 15-20+ years of your system's life, saving an estimated $65,000 over 25 years.
Honolulu homeowners can take advantage of the 30% federal solar tax credit, which reduces your system cost by 30%. Hawaii also offers net metering, and various state-level incentive programs. Check our incentives page for the complete list.
Honolulu homeowners can save an estimated $65,000 over 25 years by going solar. Actual savings depend on your electricity usage, system size, roof orientation, and available incentives. With electricity rates averaging $0.39/kWh in Hawaii, solar provides significant long-term savings.
Solar Costs in Other Hawaii Cities
Start Saving with Solar Today
Join thousands of homeowners who've switched to clean energy
Get Your Free Quote