What Massachusetts still offers after the federal credit ended
Every incentive on this page is verified against Massachusetts government sources - and the expired ones salespeople still quote are called out.
The 30% federal solar tax credit ended for installations finished after December 31, 2025 - Weymouth Town systems completed in 2026 get $0 from it.
Under Massachusetts's export rules, compensation for surplus power decides the payback - which typically runs 10-14 years on unsubsidized 2026 math.
Installed home solar for Weymouth Town homeowners averages about $2.58 a watt across the U.S. marketplace - roughly $30,960 for a 12 kW system before incentives.
If a salesperson in Weymouth Town tells you a 30% federal tax credit applies to your 2026 installation, they are quoting a dead law. What may still exist: Massachusetts's own incentives and tax treatment, listed below, and lease/PPA arrangements where a company claims commercial credits - in which case the credit belongs to them, not you.
Leased and PPA systems deserve extra scrutiny in 2026: the sales pitch often bundles 'tax savings' that now accrue to the leasing company under separate commercial rules - not to you. Get every claimed saving in writing, attributed to a specific law, before signing a 20-25 year contract.
The 2026 numbers
| System size | Installed price (marketplace avg) | Notes |
|---|---|---|
| 6 kW | $15,480 | Small roof / low usage |
| 8 kW | $20,640 | Typical starter system |
| 10 kW | $25,800 | Family home with AC |
| 12 kW | $30,960 | Large home / EV charging |
| Home battery (optional) | $12,000-$16,000 | Backup power + self-consumption |
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Massachusetts rules that decide your payback
| Rule | Massachusetts status |
|---|---|
| Export compensation (net metering) | Full-value net metering: a residential solar facility of 25 kW or less is a 'nameplate cap exempt' Class I facility that earns standard net metering credits on 100% of net excess generation valued at the utility's per-kWh basic service, distribution, transmission and transition charges (about 27 cents/kWh in a published Eversource R-1 example), and credits never expire and roll over to the next billing period. |
| State incentive | SMART 3.0 (Solar Massachusetts Renewable Target, 225 CMR 28.00) - Program Year 2026 opened January 1, 2026 with 600 MW AC of capacity and pays systems 25 kW AC or smaller a flat $0.03/kWh ($0.06/kWh for Low-Income) for a 20-year term; plus the state Residential Energy Credit (Solar and Wind Energy Credit) worth 15% of net expenditure up to $1,000 against personal income tax |
| Sales tax on the system | Exempt |
| Property tax on added home value | Excluded |
Massachusetts caps how much net metering each utility may host, but residential systems of 25 kW or less are 'nameplate cap exempt' and can net meter even when the utility's cap is full - a meaningful advantage over larger systems; separately, solar above 25 kW gets only 'market' net metering credits worth 60% of net excess generation.
This guide is research, not advice: an independent summary of published prices and state rules. It is not an installer, lender or tax advisor - verify incentive eligibility with a licensed tax professional before relying on it.
What this means for Weymouth Town roofs
The honest 2026 answer for Weymouth Town: solar pays back slower without the 30% credit - paybacks that ran 7-10 years often now run 10-14 - but electricity rates keep rising and hardware is the cheapest it has ever been. The deciding factor is Massachusetts's export compensation, covered in the net metering section.
This guide is research, not advice: an independent summary of published prices and state rules. It is not an installer, lender or tax advisor - verify incentive eligibility with a licensed tax professional before relying on it.
Getting Weymouth Town quotes
Same-day contracts are a red flag in this industry. Legitimate MA installers expect you to compare bids, check licenses, and read the interconnection terms. Anyone pressuring you to sign at the kitchen table is pricing in your haste.
This guide is research, not advice: an independent summary of published prices and state rules. It is not an installer, lender or tax advisor - verify incentive eligibility with a licensed tax professional before relying on it.
Common questions
How much does home solar cost in 2026?
The U.S. marketplace average is about $2.58 per watt installed - roughly $15,500 for a 6 kW system and $31,000 for 12 kW, before any state incentives. Quotes meaningfully above that level deserve a written explanation of what justifies the premium.
Do I need a battery with my solar?
Not necessarily. Under full retail net metering, the grid effectively stores your surplus for free. Batteries earn their $12,000-16,000 price where export rates are low, outages are common, or time-of-use rates make evening self-consumption valuable.
What is net metering and why does it decide everything?
It is the rule for how your utility credits electricity you export. Full retail net metering credits exports at the same rate you pay - the grid works like a free battery. Net billing or avoided-cost rules pay far less per exported kWh, which lengthens payback and strengthens the case for a home battery.
Is there still a federal solar tax credit in 2026?
No. The 30% Residential Clean Energy Credit was repealed effective for systems placed in service after December 31, 2025, per the IRS. Only systems finished by the end of 2025 qualified. State-level incentives are separate and some survive - check the state page in this guide.
Should I lease, get a PPA, or buy?
Buying keeps all savings and any incentives with you. Leases and PPAs put a company's equipment on your roof for 20-25 years, complicate a home sale, and in 2026 any tax benefits they advertise belong to the company under commercial rules - not to you. Read escalator clauses carefully.
Get solar quotes for Weymouth Town
These platforms collect bids from licensed installers so you can compare against the same spec. Prices come from installers, not from this site.
Disclosure: this is an independent guide. If you request quotes through a link here, the platform may pay this site a referral fee. That fee never changes your quotes.
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