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State incentive guide · HI

Hawaii Solar Incentives & Rebates

Separate state tax treatment, island utility programs, and export economics.

Back to all incentives

At a glance

Research focus

Tax and island utility programs

Utility context

Island, utility, export arrangement, and tax circumstances matter.

Last reviewed

August 30, 2026

The short version

What matters before you sign

Hawaii incentive decisions are island-specific and should be checked against current Department of Taxation guidance and the applicable utility program. Do not treat a state tax framework or retired battery program name as a guaranteed project value.

Program map

Separate the pieces of the offer

A program can be published and still be conditional for a specific homeowner. Use the status label, current source, and details together.

Federal · Tax credit

Residential Clean Energy Credit

EXPIRED

No federal amount is assumed for property placed in service after December 31, 2025.

  • The IRS determines qualified property, expenses, ownership, and placed-in-service timing.
  • A tax credit is different from a rebate, REC payment, utility export credit, or financing discount.
  • Review Form 5695 instructions and your own tax circumstances with a qualified professional.
IRS · Residential Clean Energy Credit

Hawaii · Tax credit

Hawaii renewable-energy income-tax credit

CONDITIONAL

A state tax-credit framework may apply, but current percentages, caps, eligible costs, and effective dates require tax-source review.

  • Use current Hawaii Department of Taxation forms and instructions for the applicable filing year.
  • Refundability, caps, ownership, and placed-in-service rules can affect the actual result.
  • A tax professional should confirm the credit for the property and taxpayer.
Hawaii Department of Taxation · Forms

Utility · Battery/export

Hawaiian Electric customer programs

VERIFY CURRENT TERMS

Battery enrollment, export, and grid-support programs can change by island and current grid needs.

  • Confirm the current program name, tariff, enrollment requirements, and dispatch terms for the service address.
  • Ask whether any payment is upfront, a bill credit, or tied to ongoing participation.
  • Do not rely on a retired program label in a proposal.
Hawaiian Electric · Clean Energy

Your comparison checklist

Four questions for every proposal

Name the administrator

Which agency, utility, or program administrator controls the benefit?

Show the status

Is it active, conditional, expired, or still waiting on confirmation?

Assign the application

Who submits it, who provides documents, and who carries denial risk?

Separate the value

Is it a credit, rebate, REC payment, export credit, or financing offer?

Next step

Bring better questions to your installer.

Compare local options while keeping program status, source, application ownership, and funding risk visible.

Last reviewed: August 30, 2026. Incentive rules, funding, tariffs, and eligibility can change. This page is informational and is not tax advice.