Solar by City / Idaho / Nampa
Data last verified: 2026-08Is Solar Worth It in Nampa, Idaho? (2026)
The honest answer depends on four numbers unique to Nampa: your electricity rate, your solar production, your net metering policy, and your state incentives. Here are the real figures, with sources and dates. City production is a modeled estimate derived from Idaho's real NREL PVWatts v8 value adjusted for local latitude.
Solar Snapshot for Nampa, Idaho (2026)
| Residential electricity rate | 12.5¢/kWh (EIA, 2026 YTD May) |
| Solar production (modeled) | ~1291 kWh per kW per year (derived from NREL PVWatts v8 1280 kWh/kW, latitude-adjusted) |
| Net metering | avoided-cost export compensation — export ~4¢/kWh |
| State tax credit | None in 2026 |
| Rebates / performance | None |
| SREC market | No active SREC market |
| Property tax exemption | No |
| Sales tax exemption | No |
Estimate Your Own Payback in Nampa
The table above is a 6 kW benchmark using Idaho's real inputs. Your home is different — use the Solar ROI Calculator with Idaho pre-loaded to get your exact payback, or the 30-second worth-it quiz for a go/no-go verdict.
Nampa FAQ
How much solar production can I expect in Nampa?
PVFig models Nampa at ~1291 kWh per kW installed per year, derived from Idaho's NREL PVWatts v8 state value (1280 kWh/kW) adjusted for the city's latitude. This is a modeled estimate — a site-specific PVWatts run with your exact roof azimuth, tilt and shading will differ. Actual output also depends on panel quality and local weather.
What is the estimated solar payback in Nampa?
At a typical 2.85/W installed cost and 12.5¢/kWh electricity, a 6 kW system in Nampa has an estimated payback of about 21 years. That is a long payback — solar is hard to justify unless strong state incentives apply.
Does Idaho have net metering and a solar tax credit in 2026?
Idaho uses avoided-cost export compensation with exports around 4¢/kWh. There is no state income tax credit for residential solar in 2026. The federal residential credit (Section 25D) expired Dec 31, 2025 and does not apply to 2026 installations.
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Read →Compare Idaho with nearby states
- Massachusetts — 30.1¢/kWh, ~1302 kWh/kW
- Connecticut — 29.8¢/kWh, ~1252 kWh/kW
- Maine — 29.7¢/kWh, ~1319 kWh/kW
- New Hampshire — 26.8¢/kWh, ~1259 kWh/kW
- Rhode Island — 29.5¢/kWh, ~1294 kWh/kW
- Vermont — 23.9¢/kWh, ~1222 kWh/kW