SunSavvy

Solar Panel Cost in Hawaii (2026)

In Hawaii, residential electricity averages about 42¢/kWh with roughly 5.8 peak sun hours a day. Here's what solar looks like for a typical Hawaii home using ~10,800 kWh a year.

System size
5.9 kW
~15 panels
Est. gross cost
$17,796
before incentives
Federal tax credit
- $5,339
30% ITC (verify)
Net cost
$12,457
after credit
Year-1 savings
$4,536
Payback
2.7 yrs

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Estimate your own Hawaii numbers

Enter your real electric bill — the calculator is preset to Hawaii.

Assumes $3.00/W installed and the 30% federal tax credit. Estimates only.

System size
2.4 kW
~6 panels
Est. gross cost
$7,062
before incentives
Federal tax credit
- $2,119
30% ITC
Net cost
$4,943
after credit
Year-1 savings
$1,800
Payback
2.7 yrs
25-year net savings
$56,421
after system cost, with rate escalation
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Incentives in Hawaii

The biggest incentive is usually the federal solar tax credit — see ourtax credit guide and confirm the current percentage, since the rules have changed recently. Hawaii may also offer state or utility incentives, rebates or performance payments; look up current programs in theDSIRE database.

What moves the number in Hawaii

  • Your utility's rate and net metering — see how net metering works.
  • Roof orientation, shading and sun hours (5.8/day here on average).
  • Installer pricing — always compare several quotes.

Figures are estimates for education, not a quote. Electricity rates and sun hours are approximate state averages. Confirm with local installers.

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