Solar panels in Montana
What a residential solar system actually costs in Montana in 2026 — plus incentives, payback, and how to pick a vetted installer.
The real cost of solar in Montana
A typical 9.5 kW rooftop system in Montana runs about $28,025 installed. The federal Residential Clean Energy Credit knocks 30% off — around $8,408 — bringing the net price to roughly $19,617.
Montana adds its own incentive: Alternative Energy Systems credit up to $1,000. Stack that on top of the federal credit. Montana also exempts the added home value from property tax.
What you'll produce — and save
- ~13,870 kWh/year from a 9.5 kW system at 5.0 peak sun hours.
- At 12.1¢/kWh that's $1,678/yr off your electric bill in year one.
- Estimated payback: 11.7 years.
- 25-year net savings (2.5% annual rate escalation): $37,700.
Estimates only. Actual production depends on roof orientation, shade, equipment and your utility's specific tariff.
Net metering in Montana
Montana operates under a full retail policy for residential solar exports. Every kWh you export offsets a kWh you consume at retail rates — the strongest policy for homeowner economics.
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FAQ
How much do solar panels cost in Montana?
A typical 9.5 kW residential system in Montana costs about $28,025 before incentives, or roughly $2.95 per watt installed. After the 30% federal tax credit that drops to about $19,617.
Is solar worth it in Montana?
With an average residential electricity rate of 12.1¢/kWh and 5.0 peak sun hours per day, a properly sized system typically pays for itself in about 11.7 years and saves roughly $37,700 over 25 years.
Does Montana have net metering?
Montana operates under a full retail policy for residential solar exports. Exact credit values vary by utility — always confirm with the specific utility serving your address.
What state incentives are available in Montana?
State incentive: Alternative Energy Systems credit up to $1,000. Property tax exemption: Yes. Sales tax exemption: No. The 30% federal Residential Clean Energy Credit also applies.
Get vetted Montana installer quotes.
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Sources: EIA average residential electricity rates, NREL PVWatts sun hour data, DSIRE state incentive database, LBNL "Tracking the Sun" installed-cost benchmarks. Figures are estimates for guidance only, not a binding quote.