Massachusetts Solar Overview
Massachusetts has some of the best incentives I have seen in my career. The SMART program plus SRECs—it is almost like getting paid twice for the same solar production. I have worked with homeowners here who hit payback in just 5 years. Yes, you get snow and cloudy days, but those Eversource and National Grid rates are brutal. That is where solar shines (pun intended). The math just works here.
Despite its northern location and cloudy winters, Massachusetts has become one of the top states for residential solar. Why? A combination of excellent incentives, high electricity rates, and strong net metering policies make the economics compelling.
Payback Period: 5-7 years
SREC Value: $250-$350 per SREC — MA DOER
State Tax Credit: 15% up to $1,000 — DSIRE
Net Metering: Full retail credit
SMART Program
The Solar Massachusetts Renewable Target (SMART) program pays you for every kilowatt-hour your system produces—on top of your net metering savings.
How SMART Works
- Fixed rate per kWh produced (not just exported)
- Rate locked in for 10 years
- Payments are automatic—no selling required
- Adders for battery storage, low-income, and community solar
Current SMART Rates (Approximate)
| Utility | Base Rate | With Battery Adder |
|---|---|---|
| National Grid | $0.12-$0.15/kWh | $0.15-$0.18/kWh |
| Eversource | $0.11-$0.14/kWh | $0.14-$0.17/kWh |
| Unitil | $0.10-$0.13/kWh | $0.13-$0.16/kWh |
Rates decrease as capacity blocks fill. Earlier enrollment = higher rates.
Massachusetts SRECs
Solar Renewable Energy Credits (SRECs) are certificates representing the clean energy your system produces. In Massachusetts, you can sell these for significant income.
Current SREC Values
- MA SREC II: $250-$350 per SREC
- One SREC = 1,000 kWh (1 MWh) of production
- 7 kW system ≈ 8 SRECs per year = $2,000-$2,800 annually
SREC vs. SMART
Important: You typically must choose between SMART and SRECs—you can't claim both. Your installer should help you calculate which is more valuable for your situation. In most cases, SMART provides more predictable, guaranteed income.
Massachusetts Solar Costs
Massachusetts solar costs are above the national average, but the incentives and high electricity rates more than compensate.
| System Size | Gross Cost | After State Credit | Effective Cost* |
|---|---|---|---|
| 5 kW | $15,000-$17,000 | $14,000-$16,000 | $8,000-$10,000 |
| 7 kW | $21,000-$23,800 | $20,000-$22,800 | $12,000-$14,800 |
| 10 kW | $30,000-$34,000 | $29,000-$33,000 | $17,000-$21,000 |
*Effective cost after first 5 years of SMART/SREC income (approximate)
All Massachusetts Incentives
State Incentives
- State Tax Credit: 15% of cost, up to $1,000
- SMART Program: $0.10-$0.18/kWh for 10 years
- SRECs: $250-$350/SREC (alternative to SMART)
- Sales Tax Exemption: No state sales tax on solar equipment
- Property Tax Exemption: Solar doesn't increase property taxes for 20 years
Federal Incentives
- Cash/Loan: No federal credit (25D expired)
- PPA/Lease: 30% federal credit (claimed by solar company)
Utility Incentives
- Mass Save: Various rebates for energy efficiency (pair with solar)
- ConnectedSolutions: Battery incentive program for peak shaving
Net Metering Rules
Massachusetts has strong net metering protections:
- Full retail credit for residential systems under 10 kW
- Credits roll over month to month indefinitely
- Annual true-up in March/April (excess paid at avoided cost)
- No capacity limits for residential participation
Is Solar Worth It in Massachusetts?
Absolutely. Massachusetts is one of the best states in the country for solar ROI.
Why Massachusetts Solar is Exceptional:
- Electricity rates are among the highest in the nation ($0.25-$0.35/kWh)
- SMART + net metering = double income streams
- Full retail net metering (unlike CA, OH, etc.)
- Property and sales tax exemptions
- 5-7 year payback with 25-30 year panel life
25-Year Savings Example (7 kW System)
| Income Source | Annual Value | 25-Year Total |
|---|---|---|
| Electricity Savings | $2,400 | $60,000+ |
| SMART Payments (10 yr) | $1,000 | $10,000 |
| State Tax Credit | $1,000 (one time) | $1,000 |
| Total Benefit | — | $71,000+ |
On a ~$21,000 investment = 300%+ ROI over system life
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