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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 QuoteMaine electricity rates rose ~30% from 2021 to 2026. Your solar home protects the next buyer from that trajectory. With 100% property tax exemption, automatic net energy billing transfer, and a rate crisis that makes solar savings more compelling every year — here is how to capture the full premium.
0%
Property Tax on Solar
4.1%
Zillow Solar Premium
~30%
ME Rate Increase 2021-26
Auto
NEB Transfer
Owned solar adds approximately 4.1% to your Maine home value (~$15,170 on the $370K median). Maine provides 100% property tax exemption under Title 36 Section 656. Net energy billing (LD 1711) transfers automatically with the utility account — whether CMP or Versant. The Efficiency Maine battery rebate does NOT transfer (already claimed), but the battery itself is a fixture that stays with the home. Community solar subscriptions may or may not transfer — check your contract. Maine's ~30% rate increase from 2021-2026 is your strongest selling argument: solar locks in savings against a rate trajectory that shows no sign of reversing.
Maine electricity rates have increased approximately 30% from 2021 to 2026. CMP standard offer rates went from around $0.18/kWh to $0.28/kWh. Versant rates followed a similar trajectory. Every buyer considering your home is looking at these rates and calculating their future electricity costs.
Your solar system freezes those costs. A buyer who purchases your solar home locks in their electricity cost at $0.00/kWh for every kilowatt-hour the system produces — for the remaining 20-25 years of panel life. As CMP and Versant continue to raise rates, the value of your solar system increases proportionally. This is not a static asset — it becomes more valuable over time.
| Year | CMP Rate | Versant Rate | Context |
|---|---|---|---|
| 2021 | $0.18/kWh | $0.17/kWh | Pre-increase baseline |
| 2022 | $0.21/kWh | $0.19/kWh | Supply rate spikes begin |
| 2023 | $0.24/kWh | $0.21/kWh | CMP supply rate surges |
| 2024 | $0.26/kWh | $0.23/kWh | Rate stabilization attempts |
| 2025 | $0.27/kWh | $0.24/kWh | Continued upward pressure |
| 2026 | $0.28/kWh | $0.25/kWh | ~30% increase from 2021 |
Include a simple chart or table in your listing materials showing Maine rate increases since 2021. Then show your actual utility bills: what you paid before solar vs. after solar. The contrast is compelling. A buyer looking at $0.28/kWh CMP rates climbing toward $0.35/kWh sees your solar home as financial protection — not just an environmental choice.
Maine law (Title 36 Section 656) provides a 100% property tax exemption for solar energy equipment statewide. Unlike New Hampshire where the exemption varies by town, Maine's exemption applies to all municipalities. Solar panels, inverters, racking, and associated equipment are excluded from your property tax assessment.
For your home sale, this means the buyer gets the financial benefit of solar production (lower electricity bills, NEB credits) without any property tax penalty. The solar system adds market value to the home — which the buyer captures at resale — without adding to the annual tax burden.
Before listing, verify with your local assessor that the exemption is correctly applied to your property. While the exemption is automatic under state law, assessment practices can vary. If the solar equipment has been incorrectly included in your assessment, file for correction — this benefits both you (potential tax refund) and the buyer (confirmed ongoing exemption).
Maine's net energy billing (NEB) program, established under LD 1711, is enrolled at the meter. The interconnection agreement is between the utility and the service address. When the new owner establishes their CMP or Versant account, the NEB enrollment and interconnection transfer automatically.
This applies to both CMP and Versant territories. The utility does not require a new interconnection application, a new system inspection, or any modifications. The new owner simply establishes service and inherits the existing NEB credits and structure.
CMP Territory
Central Maine Power — serves ~80% of Maine
NEB and interconnection transfer automatically at account change. Current standard offer: ~$0.28/kWh.
Versant Power
Serves northern and eastern Maine
NEB and interconnection transfer automatically at account change. Current standard offer: ~$0.25/kWh.
Not everything transfers automatically. Know the difference before listing.
Net energy billing (NEB)
Auto-transfersAutomatic with utility account — address-based enrollment
CMP/Versant interconnection
Auto-transfersStays with service address — no reapplication needed
Battery system
Auto-transfersPermanent fixture of the home — warranty transfers with property
Monitoring system account
Does NOT transferTransfer login or create new account for buyer (Enphase, SolarEdge)
Efficiency Maine rebate
Does NOT transferOne-time incentive — already claimed, cannot be reclaimed
Community solar subscription
Does NOT transferContract-dependent — check terms with developer
Solar loan balance
Does NOT transferMust be paid off at closing or assumed by buyer (lender approval)
If you received an Efficiency Maine battery storage rebate, it was a one-time incentive paid to you at installation. It does not transfer to the next owner and cannot be reclaimed. This is important to understand because some buyers may ask about it.
What DOES transfer is the battery itself — it is a permanent fixture of the home. The buyer inherits backup power capability, any utility battery programs the system participates in, and the battery warranty (check your specific warranty for transfer terms — most major manufacturers allow one warranty transfer).
Similarly, any other Efficiency Maine rebates you received — for heat pumps, insulation, weatherization, or heat pump water heaters — are already claimed. But the improvements those rebates funded are permanent. Gather all Efficiency Maine documentation to show buyers the full scope of energy improvements in the home.
If you subscribe to a community solar project in Maine (receiving credits on your utility bill from an off-site solar array), this subscription is a separate contractual relationship from your on-site solar. It may or may not transfer with your home sale.
Review your community solar contract for transfer or assignment provisions. Some developers allow subscriber substitution — the new owner takes over your subscription at your terms. Others require the new owner to apply independently, which may involve a waitlist. Still others may not allow transfers at all, requiring you to cancel the subscription.
Contact your community solar developer before listing. If the subscription is transferable, include it as a benefit in your listing. If not, factor in any early termination costs or simply let the subscription expire naturally. On-site rooftop solar is unaffected by community solar subscription status — they are independent.
On-Site (Your Roof/Ground)
Community Solar (Off-Site)
How you financed your solar system affects buyer perception, appraiser treatment, and closing complexity.
| Factor | Owned Solar | Leased / PPA |
|---|---|---|
| Home value impact | Adds ~4.1% premium (Zillow) | No premium — may deter buyers |
| Property tax | 100% exempt (Title 36 Section 656) | Leasing company may claim exemption |
| NEB transfer | Automatic with utility account | Leasing company must approve buyer |
| Appraiser treatment | Counted as home improvement | Excluded from valuation |
| Buyer mortgage impact | No effect on DTI ratio | Lease payment added to buyer DTI |
| Sale complexity | Simple — transfers as fixture | Requires assumption or buyout ($10K-25K) |
| Rate protection story | Full — buyer locks in savings for 25 yrs | Partial — lease payments may escalate |
Prepare these documents before listing to support the solar premium and accelerate the sale.
Yes. Zillow research shows solar homes sell for approximately 4.1% more than comparable non-solar homes. On the Maine median home price of ~$370,000 (2026), that translates to roughly $15,170 in added value. The premium is particularly strong in Maine because electricity rates have increased approximately 30% from 2021-2026, making solar savings more valuable to buyers every year.
Yes. Maine provides a 100% property tax exemption for solar energy equipment under Title 36 Section 656. This is a statewide exemption — it applies to all Maine municipalities. Solar panels, inverters, racking, and associated equipment are excluded from your property tax assessment. You get the home value benefit without the tax increase. The exemption is automatic under state law, but verify with your local assessor that it is correctly applied to your property.
Net energy billing (NEB) under LD 1711 is enrolled at the meter and transfers with the property when the new owner establishes utility service. The interconnection agreement stays with the address — whether you are in CMP or Versant territory. The new owner inherits the same NEB enrollment and credit structure. Any accumulated credits at the time of sale should be addressed in your purchase and sale agreement.
Yes. The interconnection agreement is between the utility (CMP or Versant) and the service address, not the homeowner. When the new owner establishes service, the interconnection carries over automatically. The new owner does not need to reapply for interconnection or have the system re-inspected. They simply establish their utility account and the solar system continues to produce and receive NEB credits.
No. Efficiency Maine rebates are one-time incentives claimed by the original purchaser and installer. Once claimed, they cannot be transferred or reclaimed by the next owner. However, the battery itself is a permanent fixture of the home and transfers with the property. The new owner benefits from the battery backup and any utility programs the battery participates in — they just cannot claim the original rebate again.
Not automatically. Community solar subscriptions in Maine are contractual arrangements between you and the project developer. Whether the subscription transfers depends on your specific contract terms. Some developers allow subscriber substitution (the new owner takes your spot); others require the new owner to apply independently. Review your community solar contract before listing and contact the developer about transfer options. On-site rooftop solar transfers automatically — community solar is the exception.
Maine electricity rates increased approximately 30% from 2021 to 2026, with CMP rates reaching $0.25-0.29/kWh and Versant rates at $0.22-0.26/kWh. This rate trajectory is your single strongest selling argument. Solar locks in energy costs for 25+ years, protecting the buyer from future rate increases. Every time CMP or Versant raises rates, your solar system becomes more valuable to potential buyers. Include a rate history chart in your listing materials showing the trajectory.
Yes, but additional steps are required. The buyer must either assume the lease (requiring credit approval from the leasing company) or you must buy out the remaining balance — typically $10,000-25,000. Leased solar does not add the same value premium as owned solar. Maine real estate law requires full disclosure of lease terms to the buyer. Consider buying out the lease before listing to convert it to owned solar and capture the full 4.1% premium.
Prepare: (1) installation contract and warranty documentation, (2) CMP or Versant interconnection agreement, (3) net energy billing enrollment confirmation, (4) 12+ months of production data from monitoring, (5) Efficiency Maine rebate records (insulation, heat pump, or weatherization), (6) community solar subscription contract (if applicable), (7) battery system documentation and warranty, and (8) utility bill history showing pre-solar vs. post-solar costs. The rate increase context makes the bill comparison especially compelling.
Maine has a 5.5% sales tax, and solar equipment is NOT exempt from it. This means the original owner paid sales tax on the installation — approximately $1,375-1,650 on a typical $25,000-30,000 system. While this is a disadvantage compared to New Hampshire (no sales tax) or Vermont (solar sales tax exempt), it does not affect the resale value. The buyer inherits the system as a fixture of the home and does not pay additional sales tax on the solar equipment at the time of home purchase.
CMP Rate Crisis 2026
Why CMP rates make solar essential
ME Net Metering Guide
Net energy billing details and credits
ME Solar Tax Benefits
Title 36 Section 656 exemption
Community Solar Maine
Subscription transfer and options
Cash vs Loan vs Lease
How financing affects your home sale
ME Solar Cost 2026
City-by-city Maine pricing
Buying a Solar Home in ME
The buyer perspective for ME solar homes
Selling Home With Solar (National)
National guide covering all 9 states
Get a current production report, system valuation, and documentation package from NuWatt. We help Maine homeowners capture the full solar premium — with rate increase context that makes the value case undeniable.