Solar Payback Period in Idaho (2026)
Updated 2026-07-07 · MySunROI Research
The average solar payback period in Idaho is 10.3 years for a 6 kW system (2026). After break-even, electricity savings continue for 15–20+ more years.
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Payback timeline
Net install cost after 30% ITC: $10,400. Annual savings: ~$1,010. Simple payback ≈ 10.3 years.
Actual payback varies by system size, roof, shading, and rate plan.
- Low: 7.6 years · Avg: 10.3 · High: 14.4 years
What affects payback in Idaho
Idaho install costs average $2.48/W with estimated 10.3-year payback on a 6 kW system — below US national averages.
- Electricity rate (10.8¢/kWh)
- Install cost ($2/watt)
- Production (5 peak sun hours)
- Compare at least three installer quotes in Idaho
- Model payback using your actual utility rate and usage
Savings after payback
30-year savings: $20,750–$34,800.
Idaho quick stats
- 6 kW after ITC
- $10,400
- Payback
- 10.3 years
- Electric rate
- 10.8¢/kWh
- Annual savings
- $1,010
Frequently Asked Questions
Average payback in Idaho?
10.3 years for a 6 kW system after ITC.
Is 10 years good?
Yes — under 12 years is solid; under 8 is excellent.
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 — not tax or financial advice. Estimates based on NREL PV cost benchmarks, EIA electricity rates, and 2026 installer pricing surveys.