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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.
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Go solar with nothing down and one fixed monthly payment. A third-party owner captures the Section 48E commercial credit and reflects it in your price — federal credit value your own cash or loan purchase can no longer claim.
Built for Massachusetts: availability across the four approved investor-owned utility entries, a REC assignment process where applicable, and a local team that confirms current program treatment before contracting.
Verified August 7, 2026
Propel is a prepaid third-party-ownership solar program: nothing down, one fixed monthly payment, and no escalators. Because the residential Section 25D credit expired at the end of 2025, a third-party owner (SolSource) captures the commercial Section 48E credit and passes that value into your price, with an option to obtain ownership beginning after year five, subject to the agreement terms.
Yes. Propel solar is available now to qualifying Massachusetts homeowners served by an approved Eversource, National Grid, or Unitil utility. Municipal light plant customers are not eligible for Propel. You can start the $0-down process online with an instant roof design and a soft-credit prequalification that does not affect your credit score.
Some Massachusetts towns are served by a municipal light plant rather than an investor-owned utility. Propel is not available in those municipal territories, and NuWatt’s instant design will show other financing choices instead.
Yes — you prequalify online, in a few minutes, before anyone calls you. Propel requires a minimum 660 FICO score, and you must be the homeowner living at the installation address.
Enter your Massachusetts address and utility. NuWatt generates a system design for your actual roof, so you see a real layout rather than a generic estimate — and you do not need a sales call to see it.
Choose Propel on the design dashboard to see the nothing-down structure and the fixed monthly payment for the system you were just shown. No escalator, no dealer fees.
Enter your name, address, date of birth, and the last four digits of your Social Security number. It is a soft pull only: no impact to your credit score, the digits are not stored, and a decision typically comes back in seconds.
If you prequalify, a NuWatt advisor confirms roof condition, your approved IOU territory, utility interconnection, and the current SMART and REC treatment before anything is signed. SMART eligibility for prepaid Propel structures is still under program review.
Prequalification is a soft credit inquiry and does not affect your credit score. A hard inquiry happens only if you choose to submit a full application. Propel APR tiers run 8.49–10.49% nationally depending on your credit tier; your Massachusetts system price and monthly payment are confirmed during your consultation.
The federal residential solar tax credit (Section 25D) expired on December 31, 2025. A homeowner who now buys a system with cash or a consumer loan no longer receives that credit directly, which quietly erased a large piece of the math that used to make Massachusetts solar pencil out.
Propel answers that gap with third-party ownership. SolSource keeps ownership of the system during the early years so it can claim the still-active Section 48E commercial credit, then reflects that value in a lower agreement price. The Section 48E begin-construction window closed on July 4, 2026; projects that began construction on or before that date locked in the full timing pathway, and projects starting now still qualify for the credit as long as they are placed in service by December 31, 2027.
For Massachusetts specifically, the appeal is the combination of high electricity rates and a fixed payment that does not climb the way a utility bill or an escalating solar lease can. SMART is currently evaluating whether prepaid structures such as Propel qualify, so NuWatt does not include SMART value in the Propel promise and has a representative confirm the current treatment before contracting.
Five steps from design to installation, run by a Massachusetts-based team.
Select Propel during your free solar design. Nothing down, one fixed monthly payment, no annual escalator, and no dealer fees baked into the price.
Prepay with cash or fixed-payment financing arranged through TriBeam Financial under the Concert Finance program. A soft-credit prescreen starts the process without affecting your credit score.
SolSource owns the system and installs it through NuWatt using Enphase microinverters and battery hardware, permitted and interconnected across Eversource, National Grid, and Unitil territory.
SolSource operates and maintains the system and provides the performance guaranty as the system owner. That guaranty is SolSource’s, not NuWatt’s.
You have the option to obtain ownership beginning after year five, subject to the agreement terms, with no change to your fixed payment.
Your solar savings depend on your specific utility, not a statewide average. Massachusetts carries some of the highest electricity rates in the country, and they vary sharply from one utility to the next. Here is every per-utility residential rate on file so you can see where you actually stand.
South Hadley Electric Light Department
$0.13/kWh
as of Jan 2025
Chester Electric Light Department
$0.14/kWh
as of Jan 2025
Holden Municipal Light Department
$0.14/kWh
as of May 2025
Russell Municipal Light Department
$0.14/kWh
as of Jan 2025
Sterling Municipal Light Department
$0.15/kWh
as of Jan 2025
Paxton Municipal Light Department
$0.15/kWh
as of Jan 2025
Templeton Municipal Light Plant
$0.15/kWh
as of Jan 2025
West Boylston Municipal Light Plant
$0.15/kWh
as of Jan 2025
Littleton Electric Light & Water Department
$0.15/kWh
as of Jan 2025
Groveland Electric Light Department
$0.15/kWh
as of Jan 2025
Boylston Municipal Light Department
$0.15/kWh
as of Jan 2025
Middleton Electric Light Department
$0.15/kWh
as of Jan 2025
Hardwick Electric Department
$0.15/kWh
as of Jan 2025
Merrimac Municipal Light Department
$0.15/kWh
as of Jan 2025
Princeton Municipal Light Department
$0.16/kWh
as of Jan 2025
Groton Electric Light Department
$0.16/kWh
as of Jan 2025
Hudson Light and Power Department
$0.1609/kWh
as of Jun 2026
Wellesley Municipal Light Plant
$0.1616/kWh
as of Jan 2023
North Attleborough Electric Department
$0.1633/kWh
as of Feb 2026
Braintree Electric Light Department
$0.1693/kWh
as of Mar 2025
Norwood Municipal Light Department
$0.1714/kWh
as of Sep 2025
Mansfield Municipal Electric Department
$0.1717/kWh
as of Mar 2026
Middleborough Gas & Electric Department
$0.1737/kWh
as of May 2024
Shrewsbury Electric & Cable Operations
$0.1765/kWh
as of Mar 2026
Chicopee Electric Light Department
$0.1765/kWh
as of Feb 2026
Danvers Electric Division
$0.1767/kWh
as of Nov 2025
Westfield Gas & Electric Light Department
$0.191/kWh
as of May 2026
Holyoke Gas & Electric Department
$0.1933/kWh
as of Jan 2026
Hingham Municipal Lighting Plant
$0.194/kWh
as of Mar 2026
Peabody Municipal Light Plant
$0.1976/kWh
as of Apr 2024
Georgetown Municipal Light Department
$0.1985/kWh
as of Mar 2026
Taunton Municipal Lighting Plant
$0.2047/kWh
as of May 2026
Hull Municipal Lighting Plant
$0.2094/kWh
as of May 2025
Reading Municipal Light Department
$0.2163/kWh
as of Jun 2026
Marblehead Municipal Light Department
$0.2203/kWh
as of Jan 2024
Wakefield Municipal Gas & Light Department
$0.2275/kWh
as of Apr 2026
Ashburnham Municipal Light Plant
$0.235/kWh
as of May 2026
Ipswich Electric Light Department
$0.2352/kWh
as of Mar 2026
Rowley Municipal Lighting Plant
$0.2434/kWh
as of Mar 2026
Concord Municipal Light Plant
$0.2435/kWh
as of Apr 2026
Belmont Municipal Light Department
$0.267/kWh
as of Mar 2026
Eversource
$0.3736/kWh
as of Aug 2026
Cape Light Compact
$0.3806/kWh
as of Jul 2026
National Grid
$0.4178/kWh
as of Aug 2026
Unitil
$0.4814/kWh
as of Aug 2026
Massachusetts utility rates and most solar leases rise year after year. A Propel payment is fixed for the life of the agreement, so your solar cost does not chase your utility bill upward.
In a classic third-party-owned arrangement, the renewable-energy certificates (RECs) and local incentive value usually stay with the system owner. Propel is different: after you sign, it runs a REC assignment process that produces a SolSource waiver stating you have permission to own the RECs or other local incentives, where applicable.
That waiver is not a SMART approval. As of August 7, 2026, the SMART program is evaluating whether prepaid structures such as Propel qualify, and Concert advised using representative review for Massachusetts projects while that decision is pending. NuWatt confirms the current treatment for your address and agreement before contracting.
SMART treatment is pending and is not included as a guaranteed Propel benefit. REC rights and any local-program eligibility depend on the final agreement and current program rules.
See your custom system design and fixed monthly payment. Soft credit check only — no impact to your score.
The program-wide requirements and mechanics live on the national Propel pages. This Massachusetts page covers what is specific to the Commonwealth.
Get a free custom design for your Massachusetts home, or book a call with a NuWatt solar advisor. No credit impact to start.
Propel financing provided by Concert Finance. Loans originated by Medallion Bank, Member FDIC. Ownership is an option beginning after year five, subject to the agreement terms. The performance guaranty is provided by SolSource, the system owner.