Solar in Post Falls, ID
With Avista's electricity at about 14.3¢ per kWh and 1,204 kWh of sun per kW, solar is a close call for a typical Post Falls home today: about a 13.1-year payback.
- Payback, typical home
- 13.1 yrsIdaho: 18.3 yrs
- 25-year net
- $15,220after paying $14,844
- Sun
- 1,204kWh per kW per year
- Electricity
- 14.3¢20% below U.S. average
A typical Post Falls home, by the numbers
| Utility | Avista |
|---|---|
| Electricity use | 900 kWh a month |
| Best-value system | 7.2 kW, about 17 panels, 8,667 kWh a year (80% of use) |
| Cost | $24,740, or $14,844 after state incentives |
| First-year savings | $1,241 |
| Payback | 13.1 years |
| Exported power | Full retail net metering (Avista) |
Cash purchase, no federal credit, 1.8% yearly rate increases. Run it with your own numbers.
Homes in Post Falls
- Owner-occupied homes
- 64%
- Single-family detached
- 70%
- Median home value
- $477k
- Median year built
- 2005
- Population
- 43,391
- Roofs suitable for solar†
- 88%
Census ACS 2020–2024. †Share of 9,949 buildings Google Project Sunroof rated technically suitable (2019 snapshot).
Installers working in Post Falls
Public installation records for Idaho don't name installers, so we can't rank local companies here. Browse installers in Idaho.
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in Post Falls
Is solar worth it in Post Falls, ID?
For a typical home in Post Falls, solar is a close call at 2026 prices: a 7.2 kW system costs about $14,844 after state incentives, saves about $1,241 in year one and pays back in about 13.1 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in Post Falls?
About 1,204 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 16% less than the Idaho average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in Post Falls?
Most homes in Post Falls are served by Avista, at about 14.3¢ per kWh on average. Some areas are served by Kootenai Electric Cooperative, Inland Power & Light.
How much do solar panels cost in Post Falls?
A fair cash price is around $3.45 per watt before incentives, so about $24,740 for a 7.2 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Coeur d'Alene 13.4 yrs
- Moscow 12.5 yrs
- Lewiston 18 yrs
- Eagle 18 yrs
- Caldwell 18.3 yrs
- Meridian 17.6 yrs
- Nampa 18.1 yrs
- Boise City 17.9 yrs
- All of Idaho
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.