Is solar worth it in 04101 (Portland, ME)?

With an average payback period of 9.2 years and 25-year savings of $40,350, solar panels in Portland, Maine are a solid investment.

How much do solar panels cost in 04101?

The average cost of a 6kW residential solar system in Portland, Maine is $14,800 before incentives. The federal 30% Investment Tax Credit reduces this to about $10,360.

How much solar electricity does 04101 get?

Portland receives 4.15 kWh/m²/day of solar irradiance. A 6kW system in zip code 04101 produces approximately 7,271 kWh per year.

Solar Panel ROI in 04101

Portland, Maine — Is solar worth it here? Here's what the data says.

2.7x ROI Score

9.2 yrs Payback Period

$1,614/yr Annual Savings

$40,350 25-Year Savings

Your savings estimate

$ /mo bill

Annual savings $1,614

Payback 9.2 yrs

25-yr savings $40,350

Solar Calculator for 04101 (Portland)

Adjust values to see your personalized solar ROI estimate for Portland, Maine.

System Size

System Cost

Electricity Rate

$ /kWh

Solar Irradiance

4.15 kWh/m²/day

Based on NREL data for Portland, ME

ROI Score 2.7x

Annual Production 7,271 kWh

Annual Savings $1,614

Payback Period 9.2 years

25-Year Savings $40,350

After 30% ITC $10,360

Solar Data for 04101 – Portland, ME

Solar Irradiance 4.15 kWh/m²/day -16.3% vs national avg

vs Maine Avg +0.7% State avg: 4.55 kWh/m²/day

Electricity Rate $0.222/kWh Maine average rate

Annual Production 7,271 kWh 6kW system estimate

Portland gets 4.15 kWh/m²/day (16.3% below national avg) and electricity at $0.222/kWh. The 9.2-year payback represents a solid return — the federal 30% ITC further reduces costs.

Solar Incentives for Portland, Maine

★

Federal Investment Tax Credit (ITC)

Claim 30% of your system cost as a federal tax credit. On a $14,800 system, that's $4,440 back.

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Net Metering

Most Maine utilities offer net metering — sell excess electricity back to the grid at retail rates, accelerating your payback.

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Maine State Programs

Check with the Maine energy office for additional rebates, tax exemptions, and low-interest solar financing programs available in Portland.

04101 vs Maine Average

Solar Irradiance

04101: 4.15 ME avg: 4.55

Payback Period

04101: 9.2 yrs ME avg: 8.8 yrs

Annual Savings

04101: $1,614 ME avg: $1,678

25-Year Savings

04101: $40,350 ME avg: $41,950

See the full Maine solar guide for statewide data and incentives.

Nearby Zip Codes — Solar Comparison

03801 Portsmouth, NH 2.8x ROI 8.9 yr payback 04901 Waterville, ME 2.7x ROI 9.3 yr payback 03301 Concord, NH 2.8x ROI 9 yr payback 03101 Manchester, NH 2.8x ROI 8.9 yr payback 02151 Revere, MA 3.5x ROI 7.1 yr payback