Solar Panel Cost in Idaho (2026)
Installed solar in Idaho runs about $2.55 per watt — roughly 1% below the national average of $2.58/W. With the federal residential tax credit (25D) gone as of 2026, payback here rests on a $0.12/kWh power price and 4.9 daily peak sun hours.
Worked example: a typical $150/month home in Idaho
A $150/month electric bill in Idaho works out to about 14,634 kWh a year. Sizing a cash-purchase system to cover 100% of that:
Last updated June 30, 2026
Idaho solar numbers
- Installed price
- $2.55 / watt
- Electricity price
- $0.12 / kWh
- Peak sun hours
- 4.9 hrs/day
- State incentive
- 0%
- Net-metering value
- 100% of retail
$/W: industry pricing surveys · electricity: U.S. EIA, 12-month average through April 2026 · sun hours: NREL.
Local context: Cheap hydro power lengthens Idaho paybacks despite solid sun.
Estimate your own Idaho system
Adjust the bill, ownership, and battery options below — it's pre-set to Idaho's pricing and sun hours.
Monthly shape modeled with NREL PVWatts® v8 (NSRDB 2020 TMY) — updated July 18, 2026.
Electricity 12.3¢/kWh — U.S. EIA, 12-month average through April 2026.
Data: U.S. EIA · OpenEI URDB · Google Solar · NREL PVWatts · DSIRE · IRS · ENERGY STAR · industry surveys — see all sources