How much do solar panels cost in Montana?

In Montana, solar panel installation averages about $2.68 per watt. For a typical $150 monthly electric bill, a 9.7 kW system (25 panels) costs approximately $26,800 before incentives, or $18,760 after the 30% federal tax credit.

Is solar worth it in Montana?

Yes — with 4.76 peak sun hours per day and 13.9¢/kWh electricity rates, solar in Montana typically pays for itself in 10.1 years. The rating is Moderate.

Solar Panel Cost & Savings in Montana (2026)

Quick Montana Solar Facts

4.76

Peak Sun Hours/Day

13.9¢

Electricity Rate

$2.68

Install Cost/Watt

10.1 yrs

Avg Payback

In Montana, a typical 9.7 kW system (25 panels) costs approximately $18,760 after the 30% federal tax credit. With 4.76 peak sun hours per day and 13.9¢/kWh electricity rates, annual savings average $1,860 with a payback period of 10.1 years. Rating: Moderate. Source: NREL PVWatts v8 (PSH), US EIA July 2026 (rates), SEIA/EnergySage Q1 2026 (costs).

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How many solar panels do I need in Montana?

For a typical home with a $150 monthly electric bill in Montana, you need about 25 panels (10.0 kW system). Your exact number depends on your specific monthly usage and roof orientation.

What solar incentives are available in Montana?

Every US homeowner qualifies for the 30% federal Investment Tax Credit (ITC) through 2032. Many states also offer additional incentives — check our main calculator's Incentives tab for Montana-specific rebates, tax credits, and net metering policies.

Is Montana a good state for solar?

Montana has 4.76 peak sun hours per day (U.S. average: 4.98). With electricity at 13.9¢/kWh (U.S. average: 18.83¢/kWh), solar in Montana typically pays for itself in 10.1 years. Overall rating: Moderate.