Solar panel cost in Nampa, ID (2026)
A typical Nampa home needs about a 8.6 kW system (~21 panels), costing roughly $24,080 upfront or $22,880 after state incentives. The 30% federal credit ended for purchases on Dec 31, 2025 (a lease/PPA can still pass it through). At 4.52 peak sun hours and Idaho's 11.4¢/kWh rate, it pays back in about 20.4 years and saves an estimated $15,159 over 25 years.
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Preset to Nampa's local sunlight. Adjust your monthly bill for a personalized estimate.
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| Annual electricity use | 11,368 kWh |
| Annual solar production | 11,351 kWh |
| Gross system cost | $24,080 |
| Federal tax credit (purchase) | Ended Dec 2025 |
| State / local incentives | – $1,200 |
| 30% via lease/PPA instead | ~$7,224 value |
| CO₂ avoided per year | 4 tons (~66 trees) |
Estimates only — not a quote or financial advice. See our methodology.
What makes Nampa different
Nampa (population ~89,839) gets 4.52 peak sun hours per day — that's 8% less sunny than the Idaho average of 4.9. Slightly less local sunlight means panels produce a touch less than the state average, so sizing and orientation matter. Electricity rates, net metering, and incentives are set at the Idaho level: residents pay about 11.4¢/kWh, and state income tax deduction for solar (up to $20k over 4 yrs).
| City peak sun hours | 4.52 hrs/day |
| Recommended system size | 8.6 kW (~21 panels) |
| Installed price per watt | $3/W |
| Gross system cost | $24,080 |
| Federal tax credit (purchase) | Ended Dec 31, 2025 |
| State / local incentives | – $1,200 |
| Net cash cost | $22,880 |
| 30% credit via lease/PPA | ~$7,224 value |
| Annual energy produced | 11,351 kWh |
| Estimated year-1 savings | $1,119 |
| Payback period | 20.4 years |
| 25-year net savings | $15,159 |
| CO₂ avoided per year | 4 tons (~66 trees) |
Compare with the Idaho state average (8 kW, $21,200 net, 18.9-yr payback). Modeled estimates, June 2026 — not a quote. See methodology.
Compare real solar quotes in Nampa, ID
See actual prices from vetted local installers — including lease and PPA options that still capture the 30% credit in 2026. Free, no obligation.