Solar Panel Cost in Cambridge, MA (2026)
Solar panel costs in Cambridge, MA typically run above the Massachusetts state average. A 6 kW system in Cambridge costs about $22,200 before the 30% federal ITC, with payback around 7.2 years at local utility rates.
Quick answer
In Cambridge, a 6 kW solar panel system costs about $22,200 installed (7.2-year payback). After the 30% federal tax credit, net cost is roughly $15,550. Annual savings: ~$1,890/year at 24.2¢/kWh.
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Estimate for Massachusetts
$9,100net after 30% ITC
~4 kW · 10 panels · $13,000 before credits · 24.2¢/kWh
Annual savings
$1,261
Payback
7.2 yrs
25-year savings
$33,126
25-year savings timeline
Includes ~3% utility rate growth & 0.5%/yr panel degradation
Cambridge vs US Average
| Metric | MA | US avg |
|---|---|---|
| 6 kW system (before credit) | $22,200 | $16,271 |
| Net cost after 30% ITC | $15,550 | $11,390 |
| Cost per watt | $0.00/W | — |
| Annual electricity savings | $1,890 | $1,335 |
| Payback period (years) | 7.2 yrs | 9 yrs |
| Electricity rate | 24.2¢/kWh | — |
Updated 2026-07-07. Estimates only.
What affects solar costs in Cambridge?
Cambridge metro solar pricing runs 10–20% above the Massachusetts state average, reflecting local labor, permitting, and installer competition. Solar installation costs in Massachusetts reflect local labor rates, permit fees, and utility interconnection rules. A typical 6 kW system runs $15,180–$26,810 before the 30% federal tax credit, with net cost around $10,630–$18,770.
Cambridge homeowners should compare at least three local quotes specifying panel brand, inverter type, and production guarantee. Massachusetts averages 24.2¢/kWh and 4.2 peak sun hours per day — moderate solar production potential for rooftop systems.
Utility rules in Massachusetts affect how solar credits apply to your bill — verify net metering or buyback terms for your specific provider serving Cambridge.
Cambridge solar ROI depends on Massachusetts electricity rates, local install competition, and roof suitability. Massachusetts install costs average $3.24/W with estimated 7.2-year payback on a 6 kW system — above US national averages.
Cambridge solar snapshot
- 6 kW system: $17,300 – $30,550
- After 30% ITC: $15,550
- Electric rate: 24.2¢/kWh · Peak sun: 4.2 hrs/day
- Payback: ~7.2 years · Annual savings: ~$1,890
How to maximize solar ROI in Cambridge
- Compare Cambridge installer quotes on cost per watt ($/W)
- Check Massachusetts incentives — state guide
- Review how to choose installers in Massachusetts
- Compare at least three installer quotes in Massachusetts
- Model payback using your actual utility rate and usage
Frequently Asked Questions
How much do solar panels cost in Cambridge?
A 6 kW solar system in Cambridge, MA typically costs $17,300–$30,550 before incentives, or $15,550 after the 30% federal tax credit.
Is solar worth it in Cambridge?
With 24.2¢/kWh electricity rates and 4.2 peak sun hours, Cambridge homeowners often see 7.2-year payback. Use our calculator for your roof and usage.
How does Cambridge compare to Massachusetts?
Cambridge install pricing is among the higher-cost metros in Massachusetts.
Related pages
How We Calculate Solar Costs
MySunROI estimates combine NREL residential PV installed-price benchmarks, EIA state electricity rates, and regional labor modifiers — updated 2026-07-07.
Estimates only. Last updated 2026-07-07. Estimates based on NREL PV cost benchmarks, EIA electricity rates, and 2026 installer pricing surveys.