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Size your solar system to charge your EV for free, get your Level 2 charger for $0 net cost, and stack every MA incentive before the federal credit expires.
$1,000
30C Tax Credit
$700
Mass Save Rebate
~$0
Net Charger Cost
6/30/26
Credit Expires
Installing a solar system and EV charger together saves money three ways.
One electrician visit, one permit, one inspection. Bundled installation saves $500–$1,000 vs. separate projects. The charger circuit gets wired during the solar panel install.
Your solar installer runs the 240V circuit for the EV charger while they are already on-site for the panel and inverter installation. One disruption instead of two.
Stack Section 30C ($1,000) + Mass Save ($700) + SMART 3.0 ($0.03/kWh for 20 years) + ConnectedSolutions ($275/kW). The 30C credit expires June 30, 2026 — act now.
Select your EV, enter your annual miles, and choose your utility to see exactly how much extra solar you need and what it will cost.
Adjust inputs below to see your MA results
24.2 kWh/100mi · 310 mi range
$0.2836/kWh
Total Annual Savings
$911/yr
Solar offset + SMART 3.0 Income income · 8.4 yr payback
Annual EV Energy
2,904kWh
Extra Solar Needed
2.4kW
Additional Panels
~6panels
Solar Upgrade Cost
$7,647
You save $856/yr vs gas
$824/yr
Solar EV Offset
$87/yr
SMART 3.0 Income
8.4 yrs
Payback Period
Based on Eversource ($0.2836/kWh) ·1,200 kWh/kW/yr MA avg · $3.16/W installed · Gas: $3.50/gal at 25 MPG · 30C expires 6/30/26 · No residential ITC (25D expired 12/31/25)
Four steps from daily driving to panel count.
Start with your annual miles (US avg: 12,000) and your EV's efficiency rating (kWh per 100 miles).
12,000 mi/yrMultiply: (miles / 100) × efficiency. A Tesla Model Y at 24.2 kWh/100mi × 12,000 miles = 2,904 kWh/year.
2,904 kWh/yrDivide by MA solar production: 2,904 kWh ÷ 1,200 kWh/kW/yr = 2.4 kW of additional solar capacity.
2.4 kW extraDivide by panel wattage: 2,400W ÷ 420W/panel = 6 additional panels on your roof.
~6 panels
Annual EV energy: (12,000 ÷ 100) × 24.2 = 2,904 kWh
Additional solar: 2,904 ÷ 1,200 = 2.4 kW
Extra panels: 2,400 ÷ 420 = ~6 panels
Solar upgrade cost: 2.4 kW × $3,160/kW = $7,584
Charger net cost: $1,200 − $1,000 (30C) − $700 (Mass Save) = $0
Annual savings: $824/yr electricity + $87/yr SMART = $911/yr
Every dollar you can claim in 2026. No residential solar ITC (25D expired).
| Incentive | Amount | Type | Status | Notes |
|---|---|---|---|---|
| Section 30C (EV Charger) | Up to $1,000 | Federal tax credit | Active | Expires June 30, 2026. 30% of cost, max $1,000 residential. |
| Mass Save EV Charger Rebate | Up to $700 | Utility rebate | Active | IOU customers only (Eversource, NGrid, Unitil). Not available to MLP customers. |
| SMART 3.0 | $0.03/kWh × 20 yr | State production incentive | Active | Residential ≤25 kW. Fixed rate for 20 years. ~$396/yr for 11 kW system. |
| ConnectedSolutions | $225–$275/kW/yr | Demand response | Active | Battery required. Eversource $275/kW summer, NGrid $225/kW. Unitil: not participating. |
| MA State Tax Credit | 15% up to $1,000 | State tax credit | Active | Applies to solar panel costs. Claimed on MA state income tax return. |
| Net Metering (1:1) | Full retail rate | Bill credit | Active | Class I ≤25 kW. 1:1 retail credit. Excess rolls over monthly. |
| Property Tax Exemption | 20 years | Tax exemption | Active | Solar does not increase property tax assessment for 20 years. |
| Sales Tax Exemption | 6.25% saved | Tax exemption | Active | No sales tax on solar equipment and installation in MA. |
| Section 25D (Residential Solar ITC) | $0 | Expired | Dead | Expired December 31, 2025. No federal credit for homeowner-owned solar. |
| Section 25C (Energy Efficiency) | $0 | Expired | Dead | Expired December 31, 2025. No federal credit for heat pumps, insulation, etc. |
The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, set the final expiration for the Section 30C EV charger tax credit at June 30, 2026. There is no extension provision. Here is what qualifies — and what does not.
Timeline tip: Solar + EV charger installations in Massachusetts typically take 6–10 weeks from contract to completion (permitting, utility interconnection, inspection). To meet the June 30, 2026 deadline, sign a contract by mid-April 2026 at the latest.
Level 2 is the standard for home charging. Here is what to know.
Many older MA homes have 100A or 150A panels. Adding solar + EV charger may require a 200A panel upgrade ($1,500–$3,000). Your installer should assess panel capacity during the site visit.
Massachusetts follows NEC 2023. EV chargers require a dedicated branch circuit, GFCI protection, and proper conduit for outdoor installations. All work must be permitted and inspected.
Mount the charger as close to your electrical panel as possible to minimize wiring costs. Garage installs are simplest. Outdoor installations need NEMA 4 rated enclosures for New England weather.
Your utility determines your charging cost and which programs you can access.
Eastern MA, Western MA
Best for: TOU arbitrage — charge off-peak, export solar during peak
Central & Southeast MA
Best for: Lowest flat rate of the IOUs — good for simple EV charging
Fitchburg area
Best for: Lowest rate in MA — simple flat-rate EV charging
If you have Eversource or National Grid TOU rates, set your EV to charge between 8 PM and 12 PM (off-peak). Your solar panels generate during peak hours (12 PM–8 PM) — that energy offsets your most expensive electricity and earns full retail net metering credits. Then your EV charges overnight at the lower off-peak rate. This strategy maximizes the spread between what your solar earns and what your EV costs.
MA has unique advantages for EV owners going solar.
Massachusetts exempts EVs priced under $55,000 from the 6.25% sales tax. Combined with solar charging, your total cost of EV ownership drops significantly.
SMART 3.0 pays $0.03/kWh for all solar production for 20 years — including energy used to charge your EV. A 2.4 kW EV solar adder generates ~$87/yr in SMART income on top of the electricity offset.
Massachusetts law (M.G.L. c. 184 § 23C) prohibits HOAs and condo associations from unreasonably restricting solar panel installations. Your HOA cannot block your solar + EV charger project.
Add a battery to your solar + EV system and earn $225–$275/kW per summer through ConnectedSolutions demand response. A Powerwall 3 (11.5 kW) can earn $3,162/yr with Eversource.
Massachusetts targets 100% clean electricity by 2050 and 50% emissions reduction by 2030. Your solar + EV combination directly contributes to these goals and future-proofs against rising grid rates.
Current 1:1 retail net metering for systems ≤25 kW is locked in for the life of the system. Even if MA reforms net metering in the future, your existing credits are protected.
Everything homeowners ask about bundling solar with an EV charger.
Most EVs need 2,400–4,900 extra kWh per year (12,000 miles). In Massachusetts, that translates to 2–4.1 kW of additional solar, or roughly 5–10 extra 420W panels. Efficient sedans like the Tesla Model 3 need fewer panels; trucks like the F-150 Lightning need more.
Yes. Bundling saves on installation costs (one crew, one permit), and right now you can stack Section 30C ($1,000 tax credit) + Mass Save ($700 rebate) to get your Level 2 charger for essentially $0 net cost. The 30C credit expires June 30, 2026.
Section 30C is a federal tax credit for alternative fuel vehicle refueling property, including home EV chargers. It covers 30% of equipment and installation costs, up to $1,000 for residential. It applies to chargers placed in service by June 30, 2026.
The Section 30C credit expires June 30, 2026. The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, accelerated the expiration date. There is no extension mechanism — once it expires, it is gone.
Yes, the Section 30C credit is independent of solar installation. You can claim it for any qualified EV charger installation completed by June 30, 2026. However, bundling with solar saves on total installation costs since the electrician is already on-site.
Level 2 (240V, 32–48 amp) is recommended for home charging. It adds 25–37 miles of range per hour, fully charging most EVs overnight. Level 1 (120V) only adds 3–5 miles per hour, which is impractical for daily commuters unless you drive under 30 miles/day.
A Level 2 charger unit costs $400–$800, and professional installation (240V circuit, wiring, permit) adds $400–$1,200, for a total of $800–$2,000. After the Section 30C credit ($1,000) and Mass Save rebate ($700), many homeowners pay $0 net.
Yes. Mass Save offers up to $700 for Level 2 EV charger installation for residential customers of Eversource, National Grid, and Unitil. Municipal utility customers are not eligible for Mass Save but may have their own MLP incentive programs.
Only if you have a battery backup system (like Tesla Powerwall) with a solar+battery hybrid inverter that can island from the grid. Standard grid-tied solar systems shut down during outages for safety. With a battery, you can charge your EV from stored solar energy.
For Eversource TOU customers, charge during off-peak hours (8 PM–12 PM weekdays, or anytime weekends) when rates are $0.2201/kWh vs. $0.3284/kWh peak. With solar, your panels generate during peak hours — use that power for the home and charge the EV overnight from net metering credits.
Lock in the Section 30C credit before June 30, 2026. Our MA-licensed installers handle solar panels, EV charger, and all permitting in one project.
Free, no-obligation quote. Licensed MA electricians. Typical installation: 6–10 weeks.
Complete pricing by city and system size
How solar pencils out without 25D ITC
TOU arbitrage and ConnectedSolutions
Whole home electrification in MA
$0.03/kWh for 20 years
1:1 retail credit explained
Compare financing options
National EV charger guide