Solar Panels in Hawaii: 2026 Cost, Savings & Incentives
Solar in Hawaii (2026): a typical 6 kW system costs ~$18,000 with no federal credit, saves ~$2,992/yr and pays back in ~6.0 years.
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Hawaii solar decision guides
Data hub — jump to in-depth sizing, bill-based, or policy guides. This page stays focused on rates & incentives.
How much does solar cost and save in Hawaii in 2026?
A typical 6 kW system (15 × 400 W panels) costs about $18,000 installed and produces roughly 10,775 kWh/year at 6 peak sun hours. At 46.28¢/kWh with low export credit (battery usually needed), that is worth about $2,992 in the first year — a ~6-year simple payback with no federal tax credit.
| Item | Estimate |
|---|---|
| Installed cost at $3.00/W | $18,000 |
| Federal tax credit (§25D ended 12/31/2025) | $0 |
| Annual production | 10,775 kWh |
| Value of production counted (60% — net-metering adjusted) | $2,992/yr |
| Simple payback | ~6 years |
| 25-year net savings (3%/yr rate rise, 0.5%/yr degradation) | $84,000 |
Estimates before state or utility incentives. Installed prices for the same system often differ 20–30% between installers — get at least three quotes. Methodology
Does Hawaii have net metering?
Low export credit (battery usually needed). Hawaii closed retail net metering in 2015; current Smart Export / self-supply options favor pairing solar with a battery.
When exports earn little, size the system to your daytime usage, shift flexible loads (EV charging, laundry, pool pumps, water heating) into sunny hours, or pair solar with a battery. A system sized to 100% of annual use usually pays back more slowly here.
What solar incentives are available in Hawaii?
Federal: no credit for 2026 installs
The 30% Residential Clean Energy Credit (§25D) ended for systems installed after December 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21). Systems finished in 2025 are claimed on the 2025 return, and unused credit from earlier years can still carry forward. Leases and PPAs are the exception: the company that owns the system can still use the commercial §48E credit for systems placed in service by the end of 2027 and may pass some of that value to you. IRS guidance
Hawaii state and local programs
Hawaii's state Renewable Energy Technologies Income Tax Credit covers 35% of PV cost up to $5,000 per system — one of the few large state credits left.
Program details change often — verify on DSIRE and with your utility. Policy checked September 29, 2026.
Is solar worth it in Hawaii in 2026?
Yes, for most homeowners with a sunny roof: a ~6-year payback is well inside a 25–30 year panel life, even without the federal credit.
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Frequently asked questions
Direct answers for US homeowners in Hawaii.