
As more homeowners and businesses in Hawaii consider installing solar systems, understanding the various Federal and State Tax Credits available can greatly reduce the cost of going solar. This blog post covers the key solar incentives that apply to Maui residents and businesses, including federal tax credits, Hawaii state tax credits, and additional incentives for commercial projects like USDA grants and the MACRS depreciation system.
Federal Solar Investment Tax Credit (ITC)
The Federal Solar Investment Tax Credit (ITC) is one of the most impactful incentives for homeowners and businesses investing in solar energy. The ITC allows you to deduct a percentage of your solar system’s cost from your federal taxes. As of 2024, the ITC offers a 30% tax credit for both residential and commercial solar systems.
- Eligibility: Homeowners and businesses are eligible for the ITC if they own their solar systems outright. Systems that are leased or under a power purchase agreement (PPA) do not qualify.
- Timeline: The 30% ITC is available through 2032. After that, the rate decreases to 26% in 2033 and 22% in 2034. By 2035, the residential ITC is scheduled to phase out completely, while a permanent 10% credit will remain for commercial projects.
For Maui homeowners, this means significant savings can be realized as long as you act before the ITC begins to sunset. The earlier you install your system, the sooner you can take advantage of this financial incentive.
Hawaii State Renewable Energy Technologies Income Tax Credit (RETITC)
In addition to the federal ITC, Hawaii offers the Renewable Energy Technologies Income Tax Credit (RETITC), which provides substantial savings to residents and businesses. This incentive covers up to 35% of the system’s cost for residential properties, with caps of $5,000 per system.
- Eligibility: To qualify, the system must be new and installed on your primary or secondary residence in Hawaii. The RETITC is available for both photovoltaic (PV) systems and solar water heating systems.
- Time Frame: Like the ITC, this credit is available at the time of purchase and installation, and it can be applied to your Hawaii state income taxes over a period of up to fifteen years if the credit exceeds your tax liability in the first year.
For Maui homeowners, the combined value of the federal ITC and the Hawaii RETITC can significantly reduce the upfront costs of going solar, making it an attractive long-term investment.
Elevated Benefits for Commercial Solar Projects
For businesses in Maui, the financial benefits of installing solar go far beyond residential incentives. While commercial projects are also eligible for the 30% ITC, there are additional layers of incentives and financial tools that make solar a highly lucrative investment for commercial properties.
Bonus Depreciation and MACRS (Modified Accelerated Cost Recovery System)
The MACRS depreciation system allows businesses to write off the cost of their solar installation over a period of five years. More importantly, under the current tax law, businesses can also take advantage of bonus depreciation, which allows for 100% depreciation in the first year. This means that the entire cost of the solar system can be deducted from the business’s taxable income within the year the system is placed in service, accelerating the return on investment.
- Eligibility: Businesses that purchase and own their solar systems are eligible for MACRS and bonus depreciation.
- Time Frame: Businesses must claim the depreciation the year the system is installed, but they can continue to realize the benefits of MACRS over the full five-year period.
The combination of the federal ITC, Hawaii state tax credits, and MACRS can cover up to 70% or more of the total system cost, significantly reducing the payback period and increasing the long-term savings of solar energy.
USDA REAP Grant for Agricultural and Rural Businesses
Another incentive available to commercial solar projects, particularly in rural or agricultural settings, is the USDA Rural Energy for America Program (REAP) Grant. This program provides grants and loan guarantees to agricultural producers and rural small businesses to purchase and install renewable energy systems.
- Grant Amounts: Grants can cover up to 25% of the total project cost, while loan guarantees can finance up to 75%.
- Eligibility: Agricultural producers with at least 50% of their income derived from farming activities and small businesses located in rural areas are eligible to apply.
- Time Frame: Applications are accepted annually, and businesses must meet USDA requirements for renewable energy systems, including solar installations.
For Maui businesses in agricultural industries or those located in rural areas, this grant offers an additional way to reduce the upfront cost of solar installations, making it an ideal financial tool for projects aiming to improve energy efficiency and reduce operating costs.
Why Go Solar Now?
If you’re considering solar for your home or business in Maui, now is the time to act. Between the Federal and State Tax credits, depreciation benefits for businesses, and USDA grants, the financial incentives are at their peak. The combination of these programs can dramatically reduce your solar installation costs, making renewable energy not only environmentally responsible but also financially advantageous.
For commercial projects, the ability to utilize bonus depreciation through MACRS, paired with the long-term savings on electricity bills, makes solar one of the most lucrative investments for business owners. Whether you’re a homeowner seeking energy independence or a business looking to optimize your energy expenses, Maui offers a wealth of incentives to make going solar easier and more cost-effective than ever.
If you’re ready to explore your options and see how much you can save, contact us at Maui Sun Solar today. We’ll guide you through the process, from choosing the right solar system to maximizing your federal and state tax benefits. Let us help you take advantage of these powerful incentives before they start to phase out!


