SunSavvy

Solar Panel Cost in Montana (2026)

In Montana, residential electricity averages about 12¢/kWh with roughly 4.6 peak sun hours a day. Here's what solar looks like for a typical Montana home using ~10,800 kWh a year.

System size
7.5 kW
~19 panels
Est. gross cost
$22,439
before incentives
Federal tax credit
- $6,732
30% ITC (verify)
Net cost
$15,707
after credit
Year-1 savings
$1,296
Payback
12.1 yrs

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Estimate your own Montana numbers

Enter your real electric bill — the calculator is preset to Montana.

Assumes $3.00/W installed and the 30% federal tax credit. Estimates only.

System size
10.4 kW
~26 panels
Est. gross cost
$31,165
before incentives
Federal tax credit
- $9,349
30% ITC
Net cost
$21,815
after credit
Year-1 savings
$1,800
Payback
12.1 yrs
25-year net savings
$39,549
after system cost, with rate escalation
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Incentives in Montana

The biggest incentive is usually the federal solar tax credit — see ourtax credit guide and confirm the current percentage, since the rules have changed recently. Montana may also offer state or utility incentives, rebates or performance payments; look up current programs in theDSIRE database.

What moves the number in Montana

  • Your utility's rate and net metering — see how net metering works.
  • Roof orientation, shading and sun hours (4.6/day here on average).
  • Installer pricing — always compare several quotes.

Figures are estimates for education, not a quote. Electricity rates and sun hours are approximate state averages. Confirm with local installers.

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Compare local installers — no obligation.

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