Solar Panel Cost in Boston, MA
Estimated costs and savings for ZIP code 02101 — updated for 2026
Urgent tax credit deadlines
- Section 48E phase-out completes December 31, 2027 — projects must be placed in service by then (515 days left).
Gross Cost
$25,900
7kW system
Annual Savings
$1,588
$132/month
Payback Period
16.3 yrs
Break-even
Peak Sun Hours
4.3
hrs/day avg
Solar System Cost Breakdown — Boston, MA
Estimated costs and savings for different residential solar system sizes in ZIP 02101. Costs based on MA average of $3.70/W and utility rate of $0.17/kWh.
| System | Cost | Savings/yr | Payback |
|---|---|---|---|
| 4 kW | $14,800 | $907 | 16.3 yrs |
| 5 kW | $18,500 | $1,134 | 16.3 yrs |
| 6 kW | $22,200 | $1,361 | 16.3 yrs |
| 7 kW(typical) | $25,900 | $1,588 | 16.3 yrs |
| 8 kW | $29,600 | $1,814 | 16.3 yrs |
| 10 kW | $37,000 | $2,268 | 16.3 yrs |
Solar Production in Boston, Massachusetts
Average Peak Sun Hours
4.3 hours/day
Moderate solar resource — still cost-effective
Est. Annual Production (7kW)
9,339 kWh
Based on 4.3 PSH × 7kW × 365 days × 85% efficiency
Average Utility Rate
$0.17/kWh
Above-average rates — good solar savings potential
Cost Per Watt in MA
$3.70/W
Above national avg — get multiple quotes
Solar Panel FAQ — Boston, MA
How much do solar panels cost in Boston, MA?
A typical 7kW solar system in Boston, MA (ZIP 02101) costs approximately $25,900 before any incentives. This works out to about $3.70 per watt installed. Smaller systems start around $14,800, while larger 10kW systems can cost up to $37,000.
How long is the solar payback period in Boston?
The average solar payback period in Boston, MA is approximately 16.3 years for a 7kW system. With estimated annual savings of $1,588, the system pays for itself and then generates free electricity for the remaining 15-20+ years of its lifespan.
How much can I save with solar panels in 02101?
Homeowners in Boston, MA (ZIP 02101) can save approximately $132 per month or $1,588 per year with a standard 7kW solar system. Over 25 years, total savings can exceed $39,700, depending on utility rate increases.
How many peak sun hours does Boston get?
Boston, MA receives an average of 4.3 peak sun hours per day. This is near the national average, making solar a solid investment in this area.
What size solar system do I need for my home in Boston?
The average home in Boston, MA needs a 7kW solar system to offset their electricity usage. The exact size depends on your monthly electric bill, roof orientation, and available space. A 7kW system would produce approximately 9,339 kWh annually in ZIP 02101.
Solar Tools for Massachusetts
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