Estimated Savings for a Typical Maine Home
Based on a standard 8 kW home system
System Size
8 kW
Gross Cost
$27,200
State Incentive
None
Net Cost
$27,200
Annual Savings
$1,943
Payback Period
14 yrs
25-Year Savings
$39,155
CO₂ Offset/yr
9,026 lbs
Maine Solar Incentives
✕
Federal Tax Credit (Expired Dec 31, 2025)
The 30% federal Residential Clean Energy Credit ended for purchased systems on December 31, 2025. Homeowners buying with cash or a loan in 2026 can no longer claim it. A solar lease or PPA can still pass through a federal credit through 2027 — the installer claims it and lowers your payments.
Net Metering Policy: Full Retail
Top utility in Maine: Central Maine Power. View full incentives detail →
Solar Costs by City in Maine
| City | Annual Savings | Payback (yrs) | Population ↓ | Utility |
|---|---|---|---|---|
| Portland | $1,588 | 17.1 | 68,408 | Central Maine Power |
| Lewiston | $2,051 | 13.3 | 36,592 | Central Maine Power |
| Bangor | $1,558 | 17.5 | 32,640 | Emera Maine |
| South Portland | $1,663 | 16.4 | 25,404 | Central Maine Power |
| Auburn | $1,820 | 14.9 | 23,055 | Central Maine Power |
| Biddeford | $2,056 | 13.2 | 21,277 | Central Maine Power |
| Sanford | $1,820 | 14.9 | 20,463 | Central Maine Power |
| Saco | $1,992 | 13.7 | 19,919 | Central Maine Power |
| Westbrook | $1,935 | 14.1 | 19,079 | Central Maine Power |
| Augusta | $1,588 | 17.1 | 18,560 | Central Maine Power |
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Quick Facts: Maine
- ⚡ Avg rate: $0.198/kWh
- 🌞 Peak sun: 4.2 hrs/day
- 🏭 Top utility: Central Maine Power
- 📋 Net metering: Full Retail