Solar Panel Cost in Billings, MT (2026)
Solar panel costs in Billings, MT typically run below the Montana state average. A 6 kW system in Billings costs about $14,900 before the 30% federal ITC, with payback around 9.9 years at local utility rates.
Quick answer
In Billings, a 6 kW solar panel system costs about $14,900 installed (9.9-year payback). After the 30% federal tax credit, net cost is roughly $10,400. Annual savings: ~$1,070/year at 12¢/kWh.
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Estimate for Montana
$7,100net after 30% ITC
~4 kW · 10 panels · $10,100 before credits · 12¢/kWh
Annual savings
$715
Payback
9.9 yrs
25-year savings
$18,773
25-year savings timeline
Includes ~3% utility rate growth & 0.5%/yr panel degradation
Billings vs US Average
| Metric | MT | US avg |
|---|---|---|
| 6 kW system (before credit) | $14,900 | $16,271 |
| Net cost after 30% ITC | $10,400 | $11,390 |
| Cost per watt | $0.00/W | — |
| Annual electricity savings | $1,070 | $1,335 |
| Payback period (years) | 9.9 yrs | 9 yrs |
| Electricity rate | 12¢/kWh | — |
Updated 2026-07-07. Estimates only.
What affects solar costs in Billings?
Billings metro solar pricing runs 5–10% below the Montana state average, reflecting local labor, permitting, and installer competition. Solar installation costs in Montana reflect local labor rates, permit fees, and utility interconnection rules. A typical 6 kW system runs $11,820–$20,930 before the 30% federal tax credit, with net cost around $8,270–$14,650.
Billings homeowners should compare at least three local quotes specifying panel brand, inverter type, and production guarantee. Montana averages 12.0¢/kWh and 4.8 peak sun hours per day — moderate solar production potential for rooftop systems.
Utility rules in Montana affect how solar credits apply to your bill — verify net metering or buyback terms for your specific provider serving Billings.
Billings solar ROI depends on Montana electricity rates, local install competition, and roof suitability. Montana install costs average $2.53/W with estimated 9.9-year payback on a 6 kW system — below US national averages.
Billings solar snapshot
- 6 kW system: $11,600 – $20,500
- After 30% ITC: $10,400
- Electric rate: 12¢/kWh · Peak sun: 4.8 hrs/day
- Payback: ~9.9 years · Annual savings: ~$1,070
How to maximize solar ROI in Billings
- Compare Billings installer quotes on cost per watt ($/W)
- Check Montana incentives — state guide
- Review how to choose installers in Montana
- Compare at least three installer quotes in Montana
- Model payback using your actual utility rate and usage
Frequently Asked Questions
How much do solar panels cost in Billings?
A 6 kW solar system in Billings, MT typically costs $11,600–$20,500 before incentives, or $10,400 after the 30% federal tax credit.
Is solar worth it in Billings?
With 12¢/kWh electricity rates and 4.8 peak sun hours, Billings homeowners often see 9.9-year payback. Use our calculator for your roof and usage.
How does Billings compare to Montana?
Billings install pricing is among the more affordable metros in Montana.
Related pages
How We Calculate Solar Costs
MySunROI estimates combine NREL residential PV installed-price benchmarks, EIA state electricity rates, and regional labor modifiers — updated 2026-07-07.
Estimates only. Last updated 2026-07-07. Estimates based on NREL PV cost benchmarks, EIA electricity rates, and 2026 installer pricing surveys.