The 8 best rated solar companies in Maine in 2021

Compare their prices online

Compare the best solar energy companies in Maine in 2021

Updated: July 10, 2021

There are currently 18 solar energy companies operating in Maine. Below you can compare the prices and reputations of solar installers, solar panel manufacturers and other solar energy companies servicing Maine today and learn how to select the best one.

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Maine solar cost calculator

8 best rated solar installers in Maine in 2021

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Best 10 solar installers near you


Which solar company should I choose?

The reviews scores for the largest solar companies are far worse than those for local, family-owned solar installation companies.

The best solar companies meet the following criteria:

  • Local
  • Family-owned
  • Less than 50 staff
  • Has an office near you
  • Been in business longer than 5 years
  • Employs their own installation crews
  • Uses Tier 1 solar panels
  • Uses inverters from Enphase, SolarEdge, SMA or Fronius

The solar industry is full of fly-by-night solar companies — both big and small — that open one year and are gone the next.

Solar panels last for 25-30 years, so you want an installer who will help you with any problems or system faults. For this to happen, your installer needs to be able to stay in business

Local solar companies, as a group, have the highest reviews score on our site and also have lower overheads than corporate installers, making them more likely to survive in the long term.

Maine solar stats:

Companies reviewed


Avg rating of Maine solar installers


Avg size of residential system


Avg price 8.95kW installed system

$20,474 ($2.29 per watt)
Maine solar guide

Top 20 solar panels used in Maine, 2021

Top solar loan providers

Installing a 7.0kW solar system in Maine, 2021

Net cost of system


Average payback time

Annual power production

9,439 kWh

Levelized cost of solar energy

7¢ /kWh

If you don't get solar

28¢ /kWh

(25 year forecast of avg electric rates)

Savings over 25 years

$36,730 - $40,596
(Savings shown after repayments of capital)

Cash flow graph based on cash purchase of this 7.0kW system

Find the best companies in other states & cities


Solar panel cost in Maine by system size

Table 1: Average cost of residential solar systems by system size
System size* Avg cost per watt Avg cost
(After tax credit) show before tax
4kW $3.14 $9,303
5kW $3.01 $11,130
6kW $2.87 $12,756
7kW $2.85 $14,742
8kW $2.90 $17,168
9kW $2.78 $18,535
10kW $2.76 $20,394
12kW $2.77 $24,598
15kW $2.60 $28,893

Going solar in Maine

Check out all of the ways energy providers of Maine can help you be more energy efficient and save money.

Table 2: Available incentive programs
Eligibility: Federal incentive
Type: Personal Tax Credit
Eligibility: State incentive
Type: Net Metering

Note: Please keep in mind that the best source of up-to-date information on incentives are the solar installers who specialize in your area.

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