BillingsSolar Incentives 2026: Rebates, Tax Credits & Net Metering
Billings homeowners installing in 2026 cannot claim the federal residential credit. What remains is NorthWestern Energy net metering. At 4.5 peak sun hours a day, a home with a $100/month bill (about 714 kWh) needs roughly a 6.6 kW system — 17 panels — and pays back in about 13.7 years.
Solar Incentives Available in Billings
The federal residential credit does not apply to a Billings system installed in 2026. Montana does not add a state income tax credit in this dataset. NorthWestern Energy sets the local rules for crediting the solar power you export.
NorthWestern Energy offers net metering in Billings, and Montana's high plains deliver strong summer production.
How Much Solar Billings Homes Produce
Billings gets 4.5 peak sun hours a day, so each 1 kW of panels produces about 1,314 kWh per year here. A 6.6 kW system — the size that fits a typical $100/month NorthWestern Energy bill — generates roughly 8,672 kWh annually, worth about $1,214 in avoided electricity in year one and more as rates rise.
NorthWestern Energy Net Metering in Billings
NorthWestern Energy credits excess solar generation from Billings homes under Montana's full retail-rate net metering (~100% of retail). A right-sized system can bring net annual electricity costs close to zero. See full Montana net metering rules →
How Much Do Solar Panels Cost in Billings?
At Montana's 2026 average of $2.95/watt, the 6.6 kW system most Billings homes need runs about $19,470 before incentives. The federal residential credit is $0. Net cost in this model is about $19,470, with payback around 13.7 years. Those figures use $0 federal credit.
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Frequently Asked Questions
See your exact Billings solar savings
Enter your NorthWestern Energy bill. The calculator uses $0 federal credit plus Montana incentives — system size, net cost, payback, and 25-year savings.