Solar in Boise: What Homeowners Should Know
Boise sees an average of 4.8 peak sun hours per day, which is what ultimately determines how much electricity a rooftop system produces here. A standard 8 kW system (about 20 panels) generates roughly 11,213 kWh each year in Boise — and paired with Idaho's local electricity rate of $0.092/kWh, that's where the savings come from.
At those numbers, a Boise homeowner saves about $86/month ($1,032/year). Against a $23,200 system cost (about $21,200 after Idaho state incentives), that works out to a payback of about 20.6 years, after which the system produces essentially free power for two decades — an estimated $14,036 in lifetime savings. Note: the 30% federal tax credit expired at the end of 2025 for purchased systems, though a solar lease or PPA can still pass it through. The local grid is served by Idaho Power, whose net metering policy directly affects how much credit you earn for surplus power.
Cost & Savings Breakdown
Based on a standard 8 kW system in Boise
25-Year Savings Projection
Utility & Net Metering
Available Incentives
Choosing a Solar Installer in Boise
- 1.Get at least 3 quotes. Prices in Idaho vary widely between installers — comparing bids on the same 8 kW system is the fastest way to avoid overpaying.
- 2.Confirm Idaho Power interconnection experience. An installer who regularly files with your local utility will move your permit and net-metering paperwork through faster.
- 3.Check licensing & the warranty. Look for NABCEP-certified installers and a workmanship warranty of 10+ years on top of the standard 25-year panel warranty.
- 4.Size for your actual usage. With 4.8 sun hours/day in Boise, make sure the proposed system matches your kWh history — not just your roof space.
Common Questions
How much does solar cost in Boise?
Solar in Boise, Idaho costs approximately $23,200 for a 8 kW system, or about $21,200 after state incentives. The 30% federal tax credit expired December 31, 2025 for purchased systems, though solar leases and PPAs can still pass it through.
What is the solar payback period in Boise?
The estimated payback period for solar in Boise is 20.6 years for a standard 8 kW system, based on local sun hours of 4.8 hrs/day and a rate of $0.092/kWh.
Is solar worth it in Boise?
For most Boise homeowners, yes. With 4.8 peak sun hours per day and an electricity rate of $0.092/kWh, a typical system saves $1,032 per year and around $14,036 over 25 years after paying for itself in 20.6 years.
How many solar panels do I need in Boise?
A standard 8 kW home solar system is about 20 panels, producing roughly 11,213 kWh per year in Boise at 4.8 sun hours/day. Your exact size depends on your household's electricity use.
Does Idaho Power offer net metering?
Idaho Power offers Full Retail net metering. Full retail rate.