2024 Solar Incentives Guide for Portland, ME - Tax Credits & Rebates

In this guide, we'll cover the latest solar incentives and rebates available in Portland.

You'll learn about:

  • Local & State Solar Incentives
  • Federal Tax Credits (Updated for 2024 and beyond)
  • Ways to optimize your solar investment

Solar installers are experts in maximizing your solar tax credits and rebates.
Get a free quote from one of our trusted Portland solar installers to see how much you can save.

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated June 24, 2024

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What Solar Tax Credits, Incentives, and Rebates are Available in Portland?

Solar and Wind Energy Property Tax Exemption

Incentive Type:
Property Tax Incentive
100% exemption

Efficiency Maine - Home Energy Loans

Incentive Type:
Loan Program
$15,000

Efficiency Maine Residential Home Energy Savings Program

Incentive Type:
Rebate Program
Geothermal Heat Pumps: One third of the installation cost up to $3,000
Air Sealing (6 hrs): $400
Insulation: 30% of project costs, up to $1,000 per zone
Air-Source Heat Pumps: $500 for single or first zone heating; an additional $250 is available for second zone heating
Biomass Boilers and Furnaces: One third of the installation cost up to $6,000
See rebate application for full list of rebate bonuses

Local Option - Property Assessed Clean Energy

Incentive Type:
PACE Financing
Residential PACE mortgage maximum: $15,000

Federal Residential Renewable Energy Tax Credit

Incentive Type:
Personal Tax Credit
30% federal tax credit for systems placed in service after 12/31/2021 and before 01/01/2033. Good for: solar water heat, solar photovoltaics, biomass, geothermal heat pumps, wind (small), fuel cells using renewable fuels.

Source: https://www.dsireusa.org/


The phrase "solar incentives" broadly refers to financial incentives designed to encourage people to use renewable energy by making installing and using solar panels more affordable. The incentives can include upfront discounts, cash back or monthly credits towards your utility bill. Some incentives are given by the federal government, some by the state of Maine and some by your specific utility company, county or municipality. Some solar incentives you might qualify for are:

  • Net Metering: Net metering factors in once your solar system is up and running. If you have in place a net metering agreement with your Portland utility company, it will subtract the value of the excess energy produced by your solar system from your utility bill each month. In some locations, this is a dollar-for-dollar credit, while in other places you may get refunded a percentage of the value.
  • Rebates: Rebates, or partial refunds after a purchase, are normally given before any solar tax credits are calculated. These rebates can be given by your local utility company, by your state or by your county.
  • Tax Exemptions: Tax exemptions can come in two forms. First, there is sales tax exemption, which is applied when you purchase solar panels. The second is property tax exemption, which allows you to exclude the added value of your solar system when paying property tax on your home.
  • Tax Credits: Tax credits are dollar-for-dollar reductions in the amount of income tax that you owe the government. (A tax credit is different from a tax deduction.)

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Federal Solar Incentives

When thinking about solar incentives, federal incentives are likely the first thing that comes to mind. The Federal Solar Investment Tax Credit, or ITC, is probably the best-known federal solar incentive. The ITC provides a tax credit for a specific percentage of your solar system's cost.

The ITC applies towards solar systems installed after January 1, 2006, and lets you deduct from your taxes a percentage of the total cost of solar panels, labor, accessories and equipment. You can receive this credit for solar panels installed on a primary or secondary residence in the United States that you own. The original claim amount was 30% of the total cost, although depending on when the project was completed, your credit may range from 26-30%. There is no maximum amount you can claim.

Curious how the ITC might apply to your specific situation? Reach out to your local Portland solar panel installation expert to get more information.

In August 2022, the Inflation Reduction Act expanded and extended the ITC, now titled the Clean Energy Credit. The Clean Energy Credit has increased the current credit up to 30% for solar installations undertaken between January 1, 2022, and December 31, 2032. After 2032, the percentage will be reduced slightly each year until the end of the program in 2035. The expansion to the program also makes it easier to get credit for energy storage systems, beginning in 2023.

Click here to learn more about the new Inflation Reduction Act. The best way to learn more about how the new Clean Energy Credit might apply to you is to speak with your local Portland solar panel company directly.

State & Local Solar Incentives

Some solar incentives may be provided at the state and local level. Similar to federal incentives, these could include rebates, tax credits and more. Certain incentives are offered for only a limited time, while others are ongoing. Local solar incentives might come from the Maine government, or from your specific county or municipality.

Next Steps for Installing Solar in Portland

There are many types of solar incentives: those given by local utility companies, those given by the Maine government and those given by the federal government, to name a few. Solar energy utilization has grown enormously in the last 15 years, partially thanks to these incentives. Your local Portland solar panel installation company can provide you with more details about which incentives you can apply for, and get you started on the path to switching to renewable energy today.

EcoWatch's Portland, ME Solar Incentives FAQs

How do I learn if I qualify for solar incentives?

It's a smart idea to get in touch with your local Portland solar installer to get an understanding of which incentives your project may qualify for. Typically, solar incentives apply to new solar panel systems installed on a property you own (in the U.S.) between the dates specified by the incentive. Some incentives, like those provided by the Maine government, might have additional requirements.

How much can I save annually on my electric bill if I add solar panels to my Portland home?

Generally, homeowners in Portland who install solar panels save around $863.31 per year, or approximately $16,402.81 over 20 years after they make the switch.

What are the top solar panel installation companies near me?

To discover the best solar panel installation companies near you, take a look at our article on Portland's top solar panel companies.

When does the federal solar tax credit end?

The Clean Energy Credit (formerly named the federal solar tax credit, or ITC), currently ends on January 1, 2035. Currently set at 30%, the credit will drop to 26% in 2033 and to 22% in 2034.

Can I receive any incentives when I add solar panels to a vacation home, rental property or commercial property?

While we recommend getting in touch with your local solar installer and/or tax professional to fully understand what solar incentives apply to you, many apply to a second home, as long as it is in the United States and owned by you. There may be other incentives available for commercial properties specifically, depending on the details.

Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert's opinion on the top solar companies featured here, follow this link.

Solar incentive research was conducted by Melissa Smith and Karsten Neumeister. Local data analysis was conducted by James Savino. See something we missed or could do better? Email the editor.

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