Is solar worth it in Maine? Get the real numbers.
| ⚡ Peak Sun Hours | 4.0 hrs/day (moderate — less than CA/AZ but enough) |
| ⚡ Avg Electricity Rate | $0.213/kWh (EIA 2025 data — 45% above U.S. average) |
| 🏠 Typial 6 kW System Cost | $25,500 after 30% Federal Tax Credit (ITC) |
| 📈 Payback Period | 9 years (industry estimate for average ME home) |
| 🔌 Net Metering | ✅ Available — full retail rate credit (MPG net metering rules) |
| 💰 25-Year Total Savings | $63,750+ (estimate based on 4% annual electricty inflation) |
Maine is not the first state that comes to mind for solar — but it should be. Here's why Mainers are increasingly going solar in 2026:
Maine's average electicity rate is $0.213/kWh (EIA, 2025), which is about 45% higher than the national average. For a household using 600 kWh/month (typical for ME due to electic heating), that's a monthly bill of ~$128. Solar can eliminate most of that.
Maine's net metering policy (adopted under Maine PUC rules) allows solar owners to receive full retail rate credit for excess electricity sent to the grid. This makes solar economics much better than in states with "avoided cost" compensation.
Key detail: Central Maine Power (CMP) and Versant Power (formerly Emera) both offer net metering. The first 100% of your electricity usage can be offset with net metering credits.
Efficiency Maine (the state's energy efficiency utility) offers rebates for solar installations in certain programs. While the exact rebate amounts change annually, homeowners should check Efficiency Maine's website for current offerings.
The 30% Federal Investment Tax Credit (ITC) applies to Maine solar installations through 2032. For a $36,500 system (before incentives), that's $10,950 back as a tax credit.
Note: The credit drops to 26% in 2033 and 22% in 2034. Systems must be placed in service before the end of 2034 to qualify.
Many Mainers worry that snow will prevent solar from working. The reality:
30% of total system cost (through 2032). Applies to equipment, installation, and permitting fees. The credit is non-refundable but can be carried forward to future tax years.
Central Maine Power (CMP): Offers net metering. CMP also has a "Grid Solar" program that allows larger systems (up to 100% of annual usage).
Versant Power (northern ME): Also offers net metering. Versant serves about 160,000 customers in northern and eastern Maine.
System size: 6 kW (18 × 350W panels)
Roof direction: South-facing, 35° tilt
Electricity rate: $0.213/kWh (CMP)
Annual production: ~7,200 kWh (NREL PVWatts estimate for Portland, ME)
| Item | Amount |
|---|---|
| Annual solar production | 7,200 kWh |
| Value at retail rate ($0.213/kWh) | $1,534 |
| Minus estimated degradation (Year 1 = 100%) | -$23 (0.5%/year) |
| Net annual savings (Year 1) | $1,511 |
Monthly savings: ~$126 | Yearly: $1,511
With electricity inflation at 4%/year and panel degradation at 0.5%/year:
Note: These are estimates. Actual savings depend on your specific electricity usage, roof orientation, shading, and future electricity rate changes.
Yes — and better than you might think. Here's the data:
| Month | Production (kWh) | % of June Production |
|---|---|---|
| January | 380 | 25% |
| February | 520 | 34% |
| March | 780 | 51% |
| June | 1,520 | 100% |
| December | 340 | 22% |
Key takeaway: While winter production is lower, Maine's long summer days (up to 15 hours of daylight in June) more than compensate. A properly sized system can still achieve net-zero annual electricity bills.
Installing solar in Maine typically takes 4–8 weeks from contract signing to system activation. Here's the typical process:
A solar installer visits your home to assess roof condition, orientation, shading, and electrical panel capacity. They design a system sized to your electricity usage and roof space.
The installer handles city/county building permits and utility interconnection agreements. Maine has relatively straightforward permitting compared to some states.
Actual installation typically takes 1–3 days for a typical residential system. The installer mounts panels, installs inverter and racking, and connects to your electrical panel.
After installation, a city/county inspector verifies the system meets code. Then your utility installs a net meter and grants permission to operate (PTO).
Yes. Both Central Maine Power (CMP) and Versant Power offer net metering. You receive full retail rate credit for excess electricity sent to the grid, which can be used to offset electricity consumed at night or during winter months.
A typical 6 kW solar system in Maine saves about $126/month, or $1,511/year. Over 25 years, total savings exceed $63,750 (assuming 4% electricity inflation and 0.5% annual panel degradation). Your actual savings depend on your electricity usage, roof direction, and local rate.
South-facing roofs capture the most annual sunlight in Maine. Southeast/southwest-facing roofs capture about 92-95% of south-facing production. East/west-facing roofs capture about 80-85%. North-facing roofs are not recommended for solar in Maine due to low winter sun angles.
Not necessarily. With net metering, you can use the grid as a "virtual battery" — sending excess summer production to the grid and drawing it back in winter. However, battery storage is valuable if you want backup power during outages (which can happen in Maine ice storms).
Maine's net metering policy is among the most favorable in New England. Massachusetts (SMART program) and New Jersey (TREC) have different incentive structures, but Maine's combination of high electricity rates and full retail net metering makes solar economically attractive.
Our solar calculator gives you a personalized estimate based on your location, electricity usage, and Maine's solar conditions. Takes 30 seconds, no email required.
Calculate My Solar Savings →Electricity rates: U.S. Energy Information Administration (EIA), Maine Electricity Profile 2025.
Solar production estimates: NREL PVWatts Calculator, using Portland, ME weather data.
Net metering policies: Maine Public Utilities Commission (PUC) net metering rules.
Federal tax credit: IRS Form 5695 instructions (2026 revision).
Disclaimer: These are estimates for planning purposes. Actual savings vary based on your specific home, utility, and installation costs. Consult a licensed solar installer for a precise quote.
The average cost of a residential solar system in Maine is $15,000-$25,000 before incentives (for a 6-10 kW system). After the 30% federal Investment Tax Credit (ITC), the net cost drops to roughly $10,500-$17,500. Actual costs vary based on roof complexity, panel brand, installer choice, and local permitting fees. Maine homeowners should get at least 3 quotes to compare pricing.
All U.S. homeowners qualify for the 30% federal Investment Tax Credit (ITC) through 2032. This credit reduces your federal taxes by 30% of your total system cost. In addition to the federal ITC, some states offer additional rebates, property tax exemptions, or sales tax exemptions on solar equipment. Check with your local utility and the Database of State Incentives for Renewables & Efficiency (DSIRE) for Maine-specific programs.
The typical solar payback period in Maine ranges from 7 to 12 years, depending on your electricity rate, system size, available incentives, and financing terms. After the payback period, your solar panels essentially produce free electricity for the remaining 15+ years of their 25-30 year lifespan. Higher electricity rates and strong sun exposure lead to faster payback periods.
Yes. According to a study by Lawrence Berkeley National Laboratory (LBNL), homes with solar systems sell for an average of $15,000-$25,000 more than comparable homes without solar. The exact premium depends on your location, system size, and age. Many states including Maine offer property tax exemptions for the added value from solar, so you won't pay higher taxes even though your home is worth more.
Solar works best on south-facing roofs with minimal shading, but east-west orientations can still produce 80-90% of optimal output. Key factors include: roof condition (should have 15+ years of life left), tilt angle (30-45 degrees ideal), and shading from trees or nearby buildings. A reputable installer will perform a free site assessment using satellite imagery to estimate your production potential before you commit to anything.