Solar Panel Cost in Maine (2026)
Installed solar in Maine runs about $2.95 per watt — roughly 14% above the national average of $2.58/W. With the federal residential tax credit (25D) gone as of 2026, payback here rests on a $0.25/kWh power price and 4.2 daily peak sun hours.
Worked example: a typical $150/month home in Maine
A $150/month electric bill in Maine works out to about 7,200 kWh a year. Sizing a cash-purchase system to cover 100% of that:
System size
6.0 kW
Panels
15
Annual offset
102%
Gross cost
$20,200
Federal credit (25D)
$0
Expired 12/31/2025 — $0
State incentive
$0
Net cost
$20,200
Payback
9.6 yr
25-year savings
$46,717
Last updated June 30, 2026
Maine solar numbers
- Installed price
- $2.95 / watt
- Electricity price
- $0.25 / kWh
- Peak sun hours
- 4.2 hrs/day
- State incentive
- 0%
- Net-metering value
- 100% of retail
Local context: High power prices and supportive net energy billing make Maine solar surprisingly strong for its latitude.
Estimate your own Maine system
Adjust the bill, ownership, and battery options below — it's pre-set to Maine's pricing and sun hours.
Estimated system cost
$23,734–$30,826
8.4 kW21 panels
Low $24kMost likely ~$27,280High $31k
Federal tax credit
— expired Dec 2025, we won't pretend otherwise
$0
State & utility incentives
$0
Est. annual savings
$2,575
Payback period
~9.3 yr
Net cost
$24k–$31k
25-year net savings
+$66,403
iA ballpark estimate for planning — not a final quote.
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