Solar Panels in Missoula, MT: Cost, Payback & Savings
A typical 8.8 kW home solar system in Missoula costs about $31,680 and pays for itself in about 18.2 years, saving roughly $14,997 over 25 years at Montana's average electricity price of 14.0¢/kWh.
Monthly solar production in Missoula
Estimated output of a 8.8 kW south-facing roof system. Jul is the strongest month (1,404 kWh); Dec the weakest (340 kWh).
Solar production (kWh) Typical home use, 852 kWh/month
Solar payback calculator for Missoula
Pre-filled with Missoula's sunshine and Montana's average electricity price. Enter your own bill and an installer's price per watt to see your payback.
Leave export credit blank where the utility offers full net metering. Where exports earn less, solar used at home as it's produced is worth the full price and the rest earns the export credit.
How Missoula compares
- Each kW of panels here produces about 1,189 kWh a year — 9% less than the Montana median and 13% less than the US median city (1,371 kWh).
- Payback ranks #17 of 20 Montana places we cover.
- Sunshine varies little across a state; electricity price, installed cost and how utilities credit exported power drive most of the difference between states.
Net metering, tax credits and incentives in 2026
Montana offers net metering: power you send to the grid is credited at or near the retail price, so every solar kWh is valued at 14.0¢ here.
There is no federal tax credit for buying home solar installed in 2026. The 30% Residential Clean Energy Credit (Section 25D) ended for systems placed in service after December 31, 2025, so the costs and paybacks on this page include no federal credit.
Montana and local utilities may still offer rebates, performance payments, property-tax or sales-tax exemptions. Search the DSIRE incentives database for Montana and ask installers which programs they apply for you.
Frequently asked questions
Is solar worth it in Missoula, MT?
For a typical home, a solar system pays for itself in about 18.2 years and then keeps saving money. Over 25 years the estimated net savings are $14,997. Verdict: slow payback. Your own payback depends on your roof, your bill and the quotes you get.
How many solar panels do I need in Missoula, MT?
A home using 852 kWh a month (the Montana average) needs about 22 panels of 400 W — a 8.8 kW system — to cover its annual use. Divide your own yearly kWh by 1,189 to get the kW you need.
How much do solar panels cost in Missoula, MT?
At 3.60 dollars per watt, a 8.8 kW system costs about $31,680 before any state or utility incentives. There is no federal tax credit for systems installed in 2026.
How much sun does Missoula get?
Missoula averages 4.4 peak sun hours per day, so each kilowatt of panels produces about 1,189 kWh a year.
Does Montana have net metering?
Yes. Power sent back to the grid is credited at or near the retail price (14.0¢ per kWh on average).
How much does electricity cost in Montana?
Residential electricity in Montana averages 14.0¢ per kWh, and a typical home uses 852 kWh a month (EIA).
Solar payback in nearby places
- Anaconda16.7 yrs
- Butte16.8 yrs
- Helena Valley West Central16.6 yrs
- Kalispell18.4 yrs
- Evergreen18.7 yrs
- Helena16.6 yrs
- Helena Valley Southeast16.6 yrs
- Whitefish18.9 yrs