Solar Panel Installation in Great Falls, MT
Local sun, utility rules, permits and installers
Great Falls has about 1,170 kWh a year per kW of rooftop solar (our estimate). Your utility decides what exported power earns, so see the rules for NorthWestern Energy below, then get quotes.
Great Falls solar at a glance
Utility rules and programs for Great Falls
NorthWestern Energy serves homes in Great Falls.
| Utility | Type | Solar export rule |
|---|---|---|
| NorthWestern Energy LLC | investor-owned | NorthWestern Energy offers state net metering up to 50 kW: extra power becomes a kWh credit on later bills, you pick the settle-up month (January, April, July or October), and unused credit resets to zero with no payment. You still pay a monthly service fee. Systems need written pre-approval before installation and a net meter before they are switched on. |
Program details are from each utility’s own pages (read October 2026). See the Montana incentives table for statewide credits and a status for every program.
Permits and approvals in Great Falls
- City of Great Falls Planning and Community Development: permit information
- Homeowners may do electrical work in a home they live in, but commercial and rental properties need a licensed contractor, who pulls the permit through the department. No solar-specific page is listed.
- The utility must approve the connection before you switch on: NorthWestern Energy interconnection requests and rules · your own utility’s interconnection page.
- Check any contractor on the Montana DLI license lookup before you sign.
- We found no Montana law that overrides an HOA or covenant that bans solar panels, so check your covenants; Montana does recognize written solar easements (MCA 70-17-301) for sunlight access.
Fees and steps change; confirm with the office before you start. We have not verified timelines for Great Falls.
Costs and savings
We do not have verified installed prices for Great Falls alone. The Montana figures above show what to expect; real quotes depend on your home, equipment and installer. Try the solar savings calculator, and get at least two written quotes.
Choosing an installer
- License: check the contractor on the Montana DLI license lookup and that the license covers this work.
- Quote: ask for an itemized written quote that names the equipment, warranties and who pulls the permit and handles the utility approval.
- Compare: get two or three quotes and compare them line by line, not only the total.
Get solar quotes in Great Falls
Tell us about your project in Great Falls. We reply ourselves and match you with a licensed installer who serves your area. It is free, with no obligation, and nothing is shared with an installer unless you choose one.
More for Great Falls
Home Battery Installation in Great Falls · Backup Generator Installation in Great Falls · Home EV Charger Installation in Great Falls · Great Falls energy guide · Montana energy guide.
Solar Panel Installation in Great Falls FAQs
Is solar worth it in Great Falls?
The sun is strong (about 1,170 kWh a year per kW, our estimate), but export credits are low, so solar pays most when sized to what you use at home or paired with a battery. See the Montana incentives for the state credit.
Is there a federal solar tax credit in 2026?
No. The federal 25D credit ended for expenditures after December 31, 2025. Montana has no state solar income tax credit (the $500 credit was repealed in 2021), but it exempts up to $20,000 of a home’s appraised value from property tax for 10 years under MCA 15-6-224.
Do I need a permit for solar panels in Great Falls?
Usually yes, and the utility may need to approve solar and batteries. City of Great Falls Planning and Community Development handles permits in Great Falls; see the permit information above.
How do I find a licensed installer in Great Falls?
Use the quote button on this page. We reply ourselves and match you with a licensed installer who serves your area; you can check any contractor on the Montana DLI license lookup.
Sources: sunshine and climate NASA POWER; hazards FEMA National Risk Index; utility numbers EIA-861 (2024); prices EnergySage (October 2026) and Generac (U.S.); credits IRS and the Montana Legislature and county property tax offices; permit information from the city or town’s own page; utility programs from each utility’s own pages (October 2026). General information, not financial, tax, legal or electrical advice. See our editorial policy.
Where to buy
Amazon shows many brands. Use the checklist to compare them.
What to check before you buy:
- Rated watts and connector type match your power station
- Folding panels: weight and weather rating are listed
- Reviews from people using it for the same job