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NuWatt designs, installs, and manages solar, battery, heat pump, and EV charger systems across 9 states. One company, one warranty, one point of contact.
Get a Free QuoteThe 30% federal solar tax credit is gone for homeowners. But Maine still has some of the best solar economics in New England — if you know what actually drives the math.
Quick Answer
Yes — solar is still worth it in Maine in 2026, despite no federal ITC.
Section 25D residential solar ITC expired December 31, 2025. $0 for cash/loan purchases in 2026.
The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, eliminated the residential credit. The commercial Section 48E ITC remains available through third-party financing (Propel) for projects starting before July 4, 2026.
Yes, the ITC is gone. But Maine has a stronger foundation for solar economics than most states — and Propel financing effectively restores the 30% advantage for qualified homeowners.
Based on an 8 kW system — typical for a Maine home averaging 800 kWh/month. No inflated savings from expired credits.
Cost: $3.20/W = $25,600. Production: ~1,200 kWh/kW/year = 9,600 kWh/year.
$25,600
System Cost
8 kW at $3.20/W
9,600 kWh
Annual Production
1,200 kWh/kW · 8 kW
$2,590
Annual Savings (CMP)
At $0.27/kWh · 1:1 NEB
$40-52K
25-Year Savings
After full cash payback
* Savings assume 4% annual rate increase. CMP territory ($0.27/kWh). Versant territory ($0.32/kWh) reduces payback by ~1 year.
These fundamentals drive Maine solar economics regardless of federal policy.
Maine averages $0.27/kWh (CMP) to $0.32/kWh (Versant) — among the highest in the US. Every kWh your panels produce saves real money. Rates have risen ~4%/year for a decade.
Maine rooftop solar owners receive full retail-rate bill credits for exported electricity. Every exported kWh saves the same $0.27/$0.32 as electricity you consume. LD 1777 did NOT change this.
100% statewide property tax exemption (36 M.R.S. §655). Unlike New Hampshire's local option, every town in Maine must exempt solar equipment from property taxes — even though it raises your home value by $15,000-$20,000.
Maine's 5.5% sales tax may be exempt for solar equipment. This is worth confirming with your installer — potential one-time savings of ~$1,400 on an 8 kW system.
While homeowners cannot claim the expired 25D ITC, Propel financing lets a third-party company own the system and claim the 30% Section 48E ITC — passing savings to you as a lower fixed payment. Deadline: July 4, 2026.
If your roof isn't ideal, Maine's community solar program offers 10-15% off your electric bill. No installation required. Subscribe and get immediate savings.
We believe in honest solar advice. These are real challenges for Maine homeowners.
The 30% residential solar tax credit (Section 25D) expired December 31, 2025. Homeowners who buy with cash or a solar loan receive $0 in federal tax credits. This adds ~4-5 years to payback vs. 2025 buyers.
Maine averages 4.4-4.6 peak sun hours/day — less than Massachusetts (4.7) or New Jersey (5.0). You need a slightly larger system to offset the same bill. Southern Maine performs better than northern regions.
Maine winters are real. Snow accumulation on panels can cut December-February production significantly. Most installers angle panels to promote snow shedding, but you'll need realistic winter production estimates.
A typical 8 kW system costs $25,600 before incentives. Without the 30% ITC, this is the full number you're working with for cash purchase. Propel financing eliminates the upfront cost entirely.
Solar is not the right answer for every Maine homeowner. Here are the situations where we would honestly tell you to wait or choose a different path.
Solar requires unobstructed south-facing exposure. Heavy shade can cut production 40-60%, destroying the economics.
Alternative: Community solar subscription — no roof required.
Replacing a roof under solar panels costs $3,000-$5,000 extra. If your roof has less than 5 years left, replace it first.
Alternative: Get a roof assessment before your solar quote.
Solar adds home value, but you won't recoup full value if you move before payback. Cash purchase only makes sense with a longer time horizon.
Alternative: Propel or community solar — lower commitment.
Standard solar financing and installation may not apply. Some manufactured homes qualify, but it's more complex.
Alternative: Contact us — we handle manufactured home cases.
Propel is NuWatt's $0 down solar program for Maine. A third-party financing company purchases the system, captures the 30% Section 48E ITC, and passes the savings to you as a fixed monthly payment — typically 25% lower than your current CMP or Versant bill. You own the system outright by year 5.
All three paths to solar ownership in Maine — with honest numbers for 2026.
Best 25-year ROI but requires significant capital.
Low upfront, but 6-8% APR adds ~$12,000 to total cost.
Third-party claims ITC. You get ~25% below your current CMP bill. Own by year 5.
Solar production varies across Maine — southern areas have more sun hours than the north. Here's what an 8 kW system produces by city.
Southern coast, best production in state
Higher Versant rate offsets shorter sun hours
Central Maine — average conditions
State capital — average central ME conditions
Yes — with the right financing. For cash buyers, payback is 9.5-12 years (depending on utility territory) and 25-year savings reach $40,000-$52,000. For Propel financing, a third-party company captures the 30% Section 48E ITC and passes savings to you as a reduced payment (~$184/mo for 8 kW), with immediate positive cash flow and ownership by year 5. The case for cash purchase is more nuanced — it still works, but the economics are more modest without the ITC.
The residential solar ITC (Section 25D) expired December 31, 2025, under the One Big Beautiful Bill Act signed July 4, 2025. Homeowners purchasing solar with cash or a loan in 2026 receive $0 in federal tax credits. The commercial ITC (Section 48E) still applies to third-party owned systems (PPA/lease/Propel) if construction begins before July 4, 2026.
Maine uses Net Energy Billing (NEB) at 1:1 retail rate for rooftop solar. Every kWh your panels export earns a full retail-rate credit ($0.27/kWh for CMP, $0.32/kWh for Versant). Credits roll over monthly and are trued up annually. LD 1777 changed community solar compensation but did NOT affect rooftop NEB.
Maine solar panels cost $2.91-$3.19/W installed. An 8 kW system (average size) runs $23,280-$25,520. A 9 kW system is $26,190-$28,710. With no federal 25D ITC, these are the effective costs for cash purchases. Propel financing offers $0 down with no upfront cost.
Most Maine homes need 8-12 kW (20-30 panels). The average Maine electricity bill is ~800 kWh/month. Given ~4.4-4.6 peak sun hours/day and winter production reduction, plan for 9-10 kW to fully offset an average Maine home. Southern Maine homes near Portland may offset more efficiently.
Propel is NuWatt's hybrid solar program for Maine (CMP and Versant territory). A third-party financing company purchases the system and claims the 30% Section 48E ITC via the 0.701 fair market value factor. This savings is passed to you as a fixed monthly payment (typically ~25% below your current electric bill). You pay $0 down, get a fixed $184/mo payment for an 8 kW system, and gain full ownership by year 5. The Section 48E deadline is July 4, 2026.
Yes — Maine studies show solar adds approximately $15,000-$20,000 to home values. Critically, a statewide property tax exemption (36 M.R.S. §655) means this added value is NOT reflected in your property tax bill. You get the equity benefit without the tax penalty.
Community solar is better if your roof is shaded, rented, or needs replacement. Community solar saves 10-15% off your electric bill with no installation. Rooftop solar saves more over 25 years (the math favors rooftop when the roof is suitable). Many Maine homeowners can't subscribe to community solar because projects are oversubscribed — check waitlist status.
For an 8 kW cash purchase: 9.5-10 years in Portland/Lewiston (CMP, $0.27/kWh) and 8-9 years in Bangor (Versant, $0.32/kWh). For Propel financing: effective payback of 7-8 years since you own the system by year 5 and have been cash-flow positive from day 1. For solar loans at 7%: 18-22 years, which makes the ROI weaker.
No. Maine does not have a state solar rebate program. Efficiency Maine focuses its programs on heat pumps and insulation, not rooftop solar. Available incentives are: 1:1 NEB (net metering), statewide property tax exemption, potential sales tax exemption, and Section 48E via third-party financing. There is no cash rebate for rooftop solar from the state.
Free quote based on your actual roof, utility territory, and electricity usage. We will tell you your honest payback period — even if it means recommending against solar.