Maine Solar Panels
Solar in Maine
Exploring solar installation in Maine? Residential electricity rates are 23.89 cents per kWh, making it useful to understand how solar panels work and whether your home is a good fit.
Roof condition, shade, snow, and seasonal sunlight can all shape system design. Read our guide to home solar panels, then learn what Maine homeowners should know about solar panel installation.
Maine Solar Panel Cost
See estimated solar costs using Palmetto’s real installation data from Maine communities, including Portland, Bangor, Augusta, and Lewiston. The default view shows a LightReach lease’s monthly payment, with no upfront cost; Palmetto owns and maintains the system, with a 90% Production Guarantee and comprehensive protection. Compare a cash purchase, too.
System
- No upfront investment
- Palmetto handles all maintenance
- 90% Production Guarantee
- Comprehensive protection program included
Key Takeaways
- Maine solar output changes with the seasons—long summer days can boost production, while short winter days, clouds, and snow can reduce it.
- Maine incentives may include utility-bill credits and a property-tax exemption, but eligibility and savings depend on program rules and local assessments.
- A LightReach lease has no upfront cost; Palmetto owns and maintains the system, with a 90% Production Guarantee and comprehensive protection program.
Looking for More Detailed Maine City Guides?
Explore our comprehensive solar guides for major cities across Maine to find location-specific information on incentives, installers, and solar potential.
Looking for information on our new Heat Pump offering?
Explore Maine Heat PumpsMaine Electricity Prices
Maine electricity rates have fluctuated and remain above the national average. Here’s what that could mean for homeowners considering solar.
Maine’s residential electricity rate rose from 17.0 cents per kilowatt-hour in 2021 to 27.4 cents in 2023, then fell to 23.9 cents in 2024. That remained above the 2024 U.S. average of 16.5 cents.
Solar panels can generate electricity at home and reduce the amount homeowners need to buy from the utility, potentially helping manage changing rates. Savings depend on system size, household electricity use, and available sunlight.
A LightReach lease lets homeowners lock in a low fixed monthly rate for solar with no upfront investment, helping limit exposure to rising utility costs. Palmetto owns and maintains the system, with a 90% Production Guarantee and comprehensive protection program.
Price of Energy: Maine vs National Average
Maine Area Utility Providers
Maine utility customers paid an average 27.40¢ per kWh in 2023, versus the national average of 16.0¢. The supplied figures do not include individual providers or utility rates, so they give statewide—not provider-by-provider—context.
Maine’s 2023 average was higher than the national figure. Because provider-level rates are missing, this comparison cannot show which utility is above or below the state average or explain the reasons for differences.
Electricity rates are one factor in evaluating solar panel installation. A system can supply some household electricity; comparing expected production with utility use and charges can help assess its potential value. Results vary by home.
Maine Utilities Electricity Rates
Maine Solar Incentives
Maine homeowners may qualify for state and utility incentives that help offset solar costs. Explore solar incentives in Maine.
Net Energy Billing customers may receive grid-export credits under program rules and applicable arrangements. Qualifying solar equipment may be property-tax exempt under statutory conditions and local assessment; eligible grid-connected batteries may receive partner-determined peak-event payments, not guaranteed by Efficiency Maine.
Federal 30% residential tax credit eliminated; state/local incentives remain. LightReach lease: Palmetto handles commercial ITC, passes savings via lower monthly payments, owns/maintains systems, with 90% Production Guarantee and comprehensive protection program.
| Incentive | Type | Description | Source |
|---|---|---|---|
| Maine Net Energy Billing (NEB) | Net Billing / Utility Bill Credits | Eligible Maine solar customers can receive utility-bill credits for electricity sent to the grid, subject to program rules, project eligibility, and the customer’s applicable NEB arrangement. | Learn More |
| Maine Renewable-Energy Equipment Property-Tax Exemption | Property Tax Exemption | Qualifying solar energy equipment may be exempt from property taxation, reducing the assessed taxable value attributable to the equipment; eligibility and savings depend on statutory conditions and local assessment. | Learn More |
| Efficiency Maine Small Battery Program | Performance-Based Battery Payment | Participating Maine battery customers may receive partner-determined payments for allowing an eligible, grid-connected battery to discharge during peak-demand events; payment amounts and terms are not guaranteed by Efficiency Maine. |
Maine’s Net Energy Billing (NEB) program can reduce eligible customers’ electric bills through credits for renewable electricity sent to the grid. Under the kWh Credit Program, eligible credits offset electricity use on a one-for-one kilowatt-hour basis, and unused credits generally expire after 12 months. It is bill compensation, not an upfront rebate or a guaranteed cash payment.
Customer-side rooftop solar can still be eligible, but participation depends on the utility, project, interconnection, and applicable program rules. Since January 1, 2026, utilities generally may not enter new NEB agreements for qualifying resources interconnected or planned on the utility side of a customer’s meter; this is not a blanket repeal for rooftop systems. Confirm the applicable arrangement and credit treatment with the utility and Maine Public Utilities Commission before investing.
Maine provides a property-tax exemption for qualifying solar energy equipment. The benefit is a reduction in the taxable value attributable to eligible equipment—not a cash rebate or income-tax credit—so the dollar savings depend on the local assessment and property-tax rate.
To claim the exemption, file the applicable application with the local assessor by April 1 of the first tax year for which you seek it. Eligibility can depend on how the system is classified and how its electricity is used or credited; statutory rules for certain solar equipment became more restrictive for property-tax years beginning on or after April 1, 2025. Do not assume a standalone battery qualifies; ask the assessor about the specific system and review the current state requirements.
This program offers a performance-based opportunity for an eligible home battery to support the grid during peak-demand events. Efficiency Maine pays participating program partners based on average battery discharge; the current program notice describes a partner incentive of $200 per average kW discharged per year. The amount, if any, passed on to a customer depends on the partner, battery, and participation agreement, and is not guaranteed by Efficiency Maine.
Customers enroll through a participating manufacturer or program partner rather than applying directly to Efficiency Maine. A Maine utility account and a grid-interconnected battery that meets program requirements are needed; solar panels are not required. Dispatch events are typically three hours, customers may opt out, and missed or opted-out events can lower the performance average used to calculate payment. Check current partner availability and contract terms before enrolling.
Ready to go solar with no money down?
Speak with a Palmetto solar expert about LightReach leasing and Maine incentives.
Get a Free QuoteMaine Solar Irradiance
Solar panel production varies throughout the year based on daylight hours, weather patterns, and sun intensity. Maine’s long summer days boost solar output, while short winter days, clouds, and snow can reduce it. Despite weather anecdotes, the right system can still produce useful power year-round.
What Can the Average Maine Solar System Power?
Summer Production (July)
In July, your 10 kW system could power:
- 3.6 average Maine homes (15 kWh/day per home)
- or Run central AC for 18 hours AND power all other appliances
- or Fully charge 5.4 Tesla Model 3 electric vehicles
Winter Production (December)
In December, your 10 kW system could power:
- 2 average Maine homes (15 kWh/day per home)
- or Keep your home heating system running for 15 hours
- or Fully charge 3 Tesla Model 3 electric vehicles
Annual Production
Over a year, your 10 kW system could:
- Offset 10 tons of carbon dioxide emissions
- or Equal the environmental benefit of planting 175 trees
- or Save approximately $4,234 in electricity costs
See how affordable solar leasing can be for your home
Get a personalized LightReach quote based on your home, energy usage, and roof — no upfront cost required.
Get My Custom EstimateSolar Installations in Maine
We organized solar installation data from across the United States to create this interactive map of Maine. Explore the hexagons to see how many installations are in each area and discover the neighborhoods and communities where your neighbors have made the switch to solar.
How to Choose a Solar Installer in Maine
Verify the license
Maine did not have a general state license for home-improvement or solar contractors in 2026. However, a complete photovoltaic installation is generally electrical work and must be performed by an electrician licensed by the Maine Electricians’ Examining Board. Racking and mounting alone are not electrical installation. Ask who will perform the electrical work, then check that electrician’s license through the Board’s online services. Confirm who is responsible for the work if the installer uses subcontractors.
Look for certified installers
Ask whether the people designing and installing your system hold relevant NABCEP certifications, and use NABCEP’s website to learn about its credentials. Certification can help you assess training and qualifications, but it is not a substitute for the required electrician license or a careful review of the contract. Ask about manufacturer-specific certifications, too: they may reflect training or authorization for particular equipment, but do not by themselves guarantee workmanship. Get the installer to explain what each credential covers.
Compare quotes the same way
Request written proposals with the same scope and compare the details side by side:
- System size: capacity in kilowatts (kW), and price per watt calculated on a consistent basis.
- Equipment: panel and inverter brands and models.
- Production: estimated electricity generation in kilowatt-hours per year (kWh/year), plus the assumptions behind the estimate.
- Warranties: panel product and performance, inverter, installer workmanship, and roof penetrations. Check the length, coverage, and who handles a claim.
- Project responsibilities: who obtains permits and manages utility interconnection, and what is excluded from the price.
- Payment: total cost or monthly payment, any escalator, and the terms that affect what you pay over time.
As context—not a Maine-wide benchmark—Palmetto reports a median installed system of 8.5 kW and about 100 days from signing to installation. Ask every bidder for a project-specific size and schedule.
Permits, interconnection and your HOA
Start by asking your municipality’s building official or code-enforcement office whether your project needs a building permit; requirements depend on the municipality and project. Electrical permitting and inspection generally follow the state framework, but a municipality with its own electrical inspector may handle them, and Maine has exceptions for some single-family-dwelling work. Confirm the route with the Board or local inspector. You or your installer will also work with your serving utility—Central Maine Power Co, Versant Power, or Eastern Maine Electric Coop—on interconnection under MPUC Chapter 324.
Maine generally bars covered legal instruments, including HOA rules, from prohibiting solar devices on residential property you own. The law covers instruments adopted or created after September 30, 2009, allows certain reasonable safety or building-protection restrictions, and permits prohibitions on common-ownership property or condominium common elements. Ask the installer and association about any applicable restrictions early.
Red flags
- Pressure to sign the same day or claims that the offer will disappear immediately.
- No clear answer about who will do the electrical work or whether that electrician is Maine-licensed. An out-of-state crew is not automatically a problem, but verify its Maine-licensed electrician and project oversight.
- Vague production estimates, a large upfront deposit, or unclear payment and warranty terms.
- Promises of a federal homeowner tax credit for a 2026 purchase; homeowner credits ended December 31, 2025.
Palmetto is one installer you can include in your comparison, with a lease option through LightReach.
Go Solar with LightReach — No Upfront Cost
In Maine, Palmetto offers a solar Power Purchase Agreement (PPA) to eligible customers of both Central Maine Power and Versant Power. With a PPA, you pay a set price per kilowatt-hour (kWh) of solar electricity produced, rather than a fixed monthly lease payment. Because production changes with the seasons, PPA charges can vary month to month. Learn more about buying versus leasing solar.
A PPA can make solar accessible without paying the full system cost upfront. Unlike a cash purchase, where you own the equipment and arrange for maintenance, a LightReach plan is designed, installed, maintained, and serviced by Palmetto Finance, which owns the system. The plan includes project management and a comprehensive protection program.
LightReach also includes a 90% Production Guarantee: if panels fall short of the guarantee, Palmetto credits the difference. See details about the LightReach energy plan. Available terms and eligibility can vary by utility and home.
Go solar without the investment
With LightReach, there are no investment costs to recoup, loan payments to manage, or maintenance needs to take on. As soon as your panels are active, your solar savings are too!
Explore LightReach LeasingFrequently Asked Questions
Yes. Maine has a Net Energy Billing (NEB) program that can credit eligible customers’ bills for renewable electricity sent to the grid. Under the kWh Credit Program, credits can offset electricity use one-for-one by kilowatt-hour; unused credits generally expire after 12 months. These are bill credits, not an upfront rebate or guaranteed cash payment.
Customer-side rooftop solar may qualify, depending on the utility, project, interconnection, and program rules. Since January 1, 2026, limits on new agreements for certain utility-side resources do not amount to a blanket repeal for rooftop solar. Check your utility and the Maine Public Utilities Commission for the rules that apply to your installation.
Yes, owned solar panels may increase a Maine home’s value. Zillow’s study found homes with solar panels sold for about 4.1% more on average, though that national estimate is not a guarantee for an individual Maine home.
The value effect applies to systems the homeowner owns, not leased or third-party-owned (TPO) systems. A leased system may affect resale differently because the buyer may need to assume the lease agreement. Roof condition, system performance, and local buyer demand also matter.
In Maine, a LightReach lease can start at an estimated $128 per month with no upfront cost for a typical 8.5 kW system. Palmetto owns and maintains the system, and the plan includes a 90% Production Guarantee and comprehensive protection. Actual payments depend on your home and system; see the calculator above for pricing details.
A cash purchase is another option: the calculator estimates $27,148 for a typical 8.5 kW system. The federal 30% tax credit is no longer available for residential cash purchases following the 2025 federal law change.
With a solar lease, you use a system Palmetto owns instead of buying it. LightReach has no upfront cost; one monthly payment covers panels, installation, monitoring, maintenance, and comprehensive protection, including a 90% Production Guarantee. A typical 8.50-kW Maine system is estimated at $128/month, based on 1,029 kWh/kW/year production and a $0.175/kWh rate.
Palmetto claims the commercial 30% federal ITC and passes savings through in lower payments. Payments are typically below current electric bills, so savings may start day one.
Solar can be financially worthwhile in Maine when the cost of solar is lower than the electricity it offsets. With LightReach, there’s no upfront investment, and homeowners can start saving immediately because the monthly lease payment is typically less than their current electricity bill.
Actual savings depend on your home’s energy use, roof, solar production, utility charges, and available bill credits. Palmetto owns and maintains the leased system, which includes a 90% Production Guarantee and comprehensive protection program.
Palmetto Solar is a solar installation option for Maine homeowners, combining national experience with an installation network serving local communities. The best fit depends on your roof’s condition and shade, seasonal sunlight and snow exposure, system design, installation support, and financing terms.
Our LightReach lease has no upfront cost; we own and maintain the system and include a 90% Production Guarantee and comprehensive protection program. Compare the proposed system and contract details with your home’s needs before deciding.
Solar panels are low maintenance in Maine. Rain often helps wash away light dirt, and snow usually melts or slides off; avoid climbing onto the roof to clear it. Check your system’s production periodically and contact a qualified professional if you notice a problem.
With LightReach, Palmetto owns the system and handles maintenance, monitoring, and repairs at no extra cost. The plan also includes a 90% Production Guarantee.