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HB513 • 2026

RELATING TO TAXATION.

RELATING TO TAXATION.

Energy Taxes
Active

The official status still shows this bill as active or still awaiting another formal step.

Sponsor
WARD, GARCIA, TODD
Last action
2025-12-08
Official status
Carried over to 2026 Regular Session.
Effective date
Not listed

Plain English Breakdown

The official source material does not provide specific details about the tax credit amount beyond it being up to 35% of the cost.

Expanding Tax Credit for Solar Energy Systems with Battery Storage

This bill expands the renewable energy technologies tax credit to include solar energy systems that integrate battery storage, starting in 2026.

What This Bill Does

  • Extends the existing tax credit for renewable energy technologies to cover solar panels with added battery storage.
  • Allows taxpayers to claim a tax credit of up to 35% of the cost for adding battery storage to an existing solar panel system, starting in 2026.

Who It Names or Affects

  • Taxpayers who install or retrofit solar energy systems with battery storage after December 31, 2025.
  • Individuals and corporations in Hawaii that file net income tax returns.

Terms To Know

Renewable Energy Technologies Tax Credit
A financial incentive provided by the state to encourage investment in renewable energy systems, such as solar panels with battery storage.
Taxable Year
The period for which a tax return is filed and taxes are calculated, typically one calendar year.

Limits and Unknowns

  • The bill does not specify the exact amount of the tax credit beyond it being up to 35% of the cost.
  • It only applies to solar energy systems installed or retrofitted with battery storage after December 31, 2025.

Bill History

  1. 2025-12-08 D

    Carried over to 2026 Regular Session.

  2. 2025-01-21 H

    Referred to EEP, ECD, FIN, referral sheet 2

  3. 2025-01-21 H

    Introduced and Pass First Reading.

  4. 2025-01-17 H

    Pending introduction.

Official Summary Text

RELATING TO TAXATION.
Tax Credit; Solar Panel; Battery; Infrastructure; Grid Resilience
Expands the existing renewable energy technologies tax credit to cover claims made after 2025 for solar energy systems integrating battery storage or existing systems that are retrofitted to include battery storage.

Current Bill Text

Read the full stored bill text
HB513

HOUSE OF REPRESENTATIVES

H.B. NO.

513

THIRTY-THIRD LEGISLATURE, 2025

STATE OF HAWAII

A BILL FOR AN ACT

relating
to taxation
.

BE IT ENACTED BY THE LEGISLATURE OF THE STATE OF HAWAII:

����
SECTION 1.
�

The legislature finds that Hawaii consumers pay the highest electricity
rates in the nation, averaging over $0.40 per kilowatt-hour.
�
Despite high costs, consumers have
experienced lapses in service reliability, growing the appeal of separating
their energy sourcing from the grid.

����
The legislature also finds that Hawaii has
one of the highest rates of rooftop solar adoption in the country, with about
one-third of single-family homes having rooftop solar, though a smaller
percentage have also installed battery storage to store captured energy.

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Accordingly, the purpose of this Act is to
incentivize the addition of battery storage to existing solar photovoltaic
systems.

����
SECTION
2
.
�
Section
235-12.5, Hawaii Revised Statutes, is amended by amending subsection (a) to
read as follows:

����
"
�235-12.5
�
Renewable energy technologies; income tax
credit.
�
(a)
�

Each individual or corporate taxpayer that files an individual or
corporate net income tax return for a taxable year may claim a tax credit under
this section against the Hawaii state individual or corporate net income
tax.
�
The tax credit may be claimed for
every eligible renewable energy technology system that is installed and placed
in service in the State by a taxpayer during the taxable year.
�
The tax credit may be claimed as follows:

����
(1)
�
For each solar energy system:
�
thirty-five per cent of the actual cost or
the cap amount determined in subsection (b); provided that:

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(A)
�
For taxable years beginning after
December 31, 2019, and except as provided in subparagraphs (B) and (C), no tax
credit may be claimed for a solar energy system that is five megawatts in total
output capacity or larger and requires a power purchase agreement approved by
the public utilities commission;

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(B)
�
A solar energy system that is five
megawatts in total output capacity or larger, installed and placed in service
pursuant to a power purchase agreement approved or pending approval by a
decision and order by the public utilities commission prior to December 31,
2019, shall continue to receive a tax credit equal to thirty-five per cent of
the actual cost, or $500,000 per solar energy system that has a total output
capacity of at least one thousand kilowatts per system of direct current,
whichever is less; [
and
]

���������
(C)
�
For each solar energy system integrated
with a pumped hydroelectric energy storage system, the tax credit may be
claimed for thirty-five per cent of the actual cost or the cap amount
determined in subsection (b), whichever is less; provided that applicable
project approval filings have been made to the public utilities commission by
December 31, 2021; [
or
]
and

���������
(D)
�
For taxable years beginning after
December 31, 2025, an existing solar energy system being retrofitted to include
a battery storage system, may receive a tax credit equal to thirty-five per
cent of the actual cost, or $500,000 per solar energy system, whichever is
less; or

����
(2)
�
For each
wind-powered energy system:
�
twenty per
cent of the actual cost or the cap amount determined in subsection (b),
whichever is less;

provided further that multiple owners of a single system shall
be entitled to a single tax credit; and provided further that the tax credit
shall be apportioned between the owners in proportion to their contribution to
the cost of the system.

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In the case of a partnership, S
corporation, estate, or trust, the tax credit allowable is for every eligible
renewable energy technology system that is installed and placed in service in
the State by the entity.
�
The cost upon
which the tax credit is computed shall be determined at the entity level.
�
Distribution and share of credit shall be
determined pursuant to administrative rule.
"

����
SECTION
3.
�
Statutory material to be repealed is
bracketed and stricken.
�
New statutory
material is underscored.

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SECTION 4.
�
This Act, upon its approval, shall apply to
taxable years beginning after December 31, 2025.

INTRODUCED BY:

_____________________________

Report Title:

Tax
Credit; Solar Panel; Battery; Infrastructure; Grid Resilience

Description:

Expands
the existing renewable energy technologies tax credit to cover claims made
after 2025 for solar energy systems integrating battery storage or existing
systems that are retrofitted to include battery storage.

The summary description
of legislation appearing on this page is for informational purposes only and is
not legislation or evidence of legislative intent.