Solar works in Maine — even with snowy winters — thanks to net metering and the federal tax credit. This guide covers what a system costs, the incentives, and how to vet an installer.
What it costs in Maine
Residential system (installed, pre-incentive)
Typical 6–10 kW system before the federal tax credit.
$15,000–$30,000
Cost per watt (installed)
Useful for comparing quotes.
$2.50–$3.50/W
Battery backup
Optional; adds resilience during outages.
$10,000–$20,000
Annual production
Maine gets solid production despite the climate.
1,100–1,300 kWh/kW
Ranges are typical Maine estimates — always get written quotes for your specific project.
Licensing & requirements
Solar installers coordinate the project, but the electrical interconnection must be performed by a licensed Maine electrician and inspected. Confirm the installer is experienced with Maine net metering and utility interconnection, and ask how they handle the federal tax credit paperwork and warranties.
Common jobs
Rooftop and ground-mount solar
Battery backup installation
Net-metering interconnection
System monitoring and maintenance
Solar for barns, camps, and off-grid
Panel and inverter replacement
Questions to ask before you hire
Will a licensed Maine electrician handle the interconnection?
How is the system sized to my usage and roof/site?
What production do you guarantee, and what is the warranty?
How does net metering work with my utility (CMP or Versant)?
Are you handling the federal tax credit documentation?
Maine-specific notes
Maine’s net-metering rules let you bank summer overproduction against winter use, and panels still produce well in cold, clear weather — snow generally slides off pitched arrays. Production averages roughly 1,100–1,300 kWh per kW installed. Work with installers familiar with CMP and Versant interconnection.
Frequently asked questions
Does solar make sense in Maine?
Yes — net metering plus the federal tax credit make solar economical in Maine, and panels produce well in cold, clear conditions. Most pitched-roof arrays shed snow on their own.
How much does a solar system cost in Maine?
A typical residential system runs $15,000 to $30,000 installed before the federal tax credit, or roughly $2.50 to $3.50 per watt. Compare quotes per watt to evaluate fairly.