Solar panels in Cambridge, MA
What Cambridge homeowners actually pay for rooftop solar in 2026 - with the same Massachusetts incentives, sun-hour math and net-metering rules that drive payback statewide.
Avg. system
8 kW
Cost / watt
$3.20
Sun hours / day
4.3
Grid rate
32.6¢
A typical 8 kW system installed in Cambridge runs about $25,600 gross. The 30% federal Residential Clean Energy Credit takes roughly $7,680 off - netting near $17,920. Expected year-one savings: $3,275, with payback near 5.5 years.
Cambridge follows Massachusetts's statewide full retail export policy. For the full picture - every Massachusetts incentive, tax exemption and metro-level nuance - see the Massachusetts solar guide.
Incentives Cambridge homeowners can stack
- 30% federal tax credit - see the federal credit guide.
- Massachusetts incentive: 15% up to $1,000 + SMART incentive
- Property-tax exemption on the added home value.
- Sales-tax exemption on solar equipment.
Get vetted Cambridge installer quotes.
Three bids, one form, no sales calls - from installers we've licensed, insured and reputation-checked.
Other Massachusetts metros we cover
Related guides
The 30% Federal Solar Tax Credit, Explained
How the Residential Clean Energy Credit works, what it covers, who qualifies, and how to actually claim it on your return.
Net Metering vs. Net Billing vs. Avoided Cost
The single biggest driver of solar payback after the federal credit - how your utility credits the power you export back to the grid.
How Much Do Solar Panels Actually Cost?
National and state cost benchmarks in $/watt, what drives the range, and how to spot inflated bids.
Do You Need a Home Battery?
When a battery pays for itself, when it doesn't, and how the 30% federal credit changes the math on storage.