Cost of solar in Helena, MT

Electricity Consumption in Helena

Electricity Consumption by Montana residents averages 733 kWh per month. It ranks #41 in the nation for savings from installing solar panels on the home.

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Solar power in Helena, Montana

NorthWestern Energy offers its Helena customers net metering. The utility will provide kilowatt hour credits for any excess electricity a customer’s solar system generates. This is the same as receiving the full retail rate for electricity. Getting the full retail rate for extra electricity your system generates provides great savings on your electric bill. 

Helena residents can also take advantage of Montana’s personal tax credit, which is equal to $500. If two taxpayers live on the property together, they can file jointly to get a tax credit equal to $1,000. The combination of NorthWestern’s net metering program, the Montana state tax credit, and the federal tax credit is a recipe for excellent savings on installing a solar system in Montana. 

Even if you are not convinced about solar we recommend that at the very least you use the solar panel calculator for Helena to find out:

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Solar power in Montana

The average cost of installing residential solar panels in Helena, Montana in 2020 is $2.58 per watt. The average system size in the US is 6 kilowatts, which means the average price of a solar system in Helena, MT is $12,900. (before claiming 26% tax credit and other rebates)

What does the cost of a real solar system look like?

Facts about installing a 5.56kW solar system in Helena, MT

This system would offset 100% of your energy usage if your typical monthly bill is $86, however your situation may vary so try our Helena solar calculator to get a result tailored to you.


Net cost of system
Cash - after 26% solar tax credit

8 Years 8 Months

Average payback time


Annual power production


levilized cost of solar energy


If you don't get solar
The forecast average utility price over the next 25 years

Cash flow graph based on cash purchase of this 5.56kW system

Life-time savings on this system over the next 25 years


(Prices shown after repayments of capital)



Solar companies in Helena, MT that provide pricing through the Solar-Estimate marketplace



Solar calculator and quote comparison tool

Average total cost of solar panel installation in Montana

System Size Cash purchase
After 26% solar tax credit
Financed purchase
After 26% solar tax credit
3kw $6,016 $6,497
4kw $7,903 $8,535
5kw $9,694 $10,470
6kw $11,455 $12,372
7kw $13,105 $14,154
8kw $14,741 $15,920
9kw $16,250 $17,550
10kw $17,760 $19,181


Going solar in Montana

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

The following programs are available:
Incentive Name Eligibility Type
Residential Renewable Energy Tax Credit Federal Personal Tax Credit
Net Metering State Net Metering
Residential Alternative Energy System Tax Credit State Personal Tax Credit
Renewable Energy Systems Exemption State Property Tax Incentive

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