Solar Panel Cost in Idaho (2026)
In Idaho, home solar installs for roughly $2.60/watt in 2026. A typical 8 kW system runs about $20,800, with an estimated payback near 14.3 years at the state's ~13¢/kWh electricity rate.
| System size | Est. cost | Est. annual savings | Payback |
|---|---|---|---|
| 6 kW | $15,600 | $1,100/yr | 14.3 yrs |
| 8 kW | $20,800 | $1,500/yr | 14.3 yrs |
| 11 kW | $28,600 | $2,000/yr | 14.3 yrs |
Estimates use ~$2.60/watt installed and Idaho's ~13¢/kWh rate. Before any state/local incentives.
Idaho solar notes
Idaho has no statewide net-metering mandate; Idaho Power moved to a lower net-billing export rate, and among the cheapest electricity in the country stretches payback periods.
Heads up: the 30% federal tax credit for purchased home solar ended Dec 31, 2025. Leased/PPA systems may still qualify through 2027, and Idaho may offer its own incentives — check locally.
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