Solar Panel Cost in Spokane: $15,079-$20,401 (2026)
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Considering solar panels for your Spokane, WA home? Spokane’s 1576 annual sunshine hours provide moderate solar production potential, comparable to Germany — the world’s leading solar market. Spokane’s electricity rate of 10.8 cents/kWh is competitive, and solar still delivers estimated savings of $1,685 per year while providing energy independence. With the 30% federal tax credit available through 2032, the average Spokane homeowner can expect a 10.5-year payback period on their solar investment. With 13 solar installers in the area, getting competitive quotes is straightforward.
TL;DR — Solar Panels in Spokane
A solar panel system in Spokane, WA costs $15,079 to $20,401 for a 9.9 kW system before incentives. After the 30% federal solar tax credit, costs drop significantly. Get your free cost report for exact Spokane pricing with incentives applied. With 1576 annual sunshine hours, expect a 10.5-year payback.
30% Federal Solar Tax Credit (ITC) Available Through 2032
The Investment Tax Credit (ITC) reduces your solar installation cost by 30%. For a 9.9 kW system in Spokane costing $17,740, that’s a $7,603 credit on your federal taxes. No income cap, no maximum. The credit steps down to 26% in 2033 and 22% in 2034.
Solar Panel Installation Costs in Spokane, WA
Based on current Spokane-Spokane Valley market rates, 1576 annual sunshine hours, and local installer pricing, here’s what Spokane homeowners typically pay for solar in 2026.
| Panel Type | Cost per Watt | 9.9 kW System | After 30% ITC | Efficiency |
|---|---|---|---|---|
| Monocrystalline | $2.56 | $22,809 – $27,878 | $15,966 – $19,514 | 20-22% |
| Polycrystalline | 0.8-0.9x mono | Get Free Report | Get Free Report | 15-17% |
| Thin Film | 0.6-0.7x mono | Get Free Report | Get Free Report | 10-13% |
What’s Included in Spokane Solar Installation Costs
- Solar panels: 24 panels for a 9.9 kW system (varies by panel wattage and efficiency)
- Inverter: String inverter or microinverters ($1,000-$2,500 depending on system size)
- Mounting hardware: Roof-mount racking system, flashing, and wiring
- Labor: Professional installation by licensed Spokane electricians and solar technicians
- Permits: Spokane County permits and utility interconnection (approximately $146)
- Monitoring: System monitoring equipment and software setup
Your Solar Investment ROI in Spokane
Spokane Solar Potential & Climate
Local Solar Conditions
Solar performance in Spokane is moderate, with 1576 hours of annual sunshine and 15,602 kWh of estimated annual production for a typical residential system. Cooler temperatures actually help panel efficiency — solar panels perform 10-15% better in mild weather compared to extreme heat. Spokane’s solar potential translates to approximately $1,685 in annual electricity savings at current WA rates.
Spokane Solar Market Insights
What You Need to Know About Spokane Solar Installers
The Spokane solar market has a growing installer base with 13 active solar installers. Compare at least 2-3 quotes to ensure competitive pricing. Key incentives: Sales tax exemption + net metering. Full retail net metering available. The 30% federal Investment Tax Credit (ITC) significantly reduces your net cost.
| Active Solar Installers | 13 in the Spokane area |
| Solar Permits Issued Last Year | 325 solar permits in Spokane County |
| Typical Installation Timeline | 1-3 days for standard residential system |
| Avg. Electricity Rate | $10.8/kWh (below national average) |
Spokane Solar Pro Tip
Before signing with a Spokane solar installer, check their NABCEP certification (the gold standard in solar), ask for production guarantees in writing, and verify they handle Spokane County permitting. Also confirm your roof is in good condition — if you’ll need a new roof within 5 years, do it before solar installation to avoid the cost of panel removal and reinstallation. The best Spokane installers offer 25-year production warranties.
Spokane Solar Incentives & Net Metering
Beyond the 30% federal tax credit, Spokane homeowners may qualify for additional state and local solar incentives.
| Federal Solar Tax Credit (ITC) | 30% of system cost ($7,603 on a $17,740 system) |
| State Incentives | Sales tax exemption + net metering |
| Net Metering | Full retail net metering available |
| Permit Fee | $146 (approximate, Spokane County) |
Net metering allows you to sell excess solar electricity back to your utility at retail rates. In Spokane, Full retail net metering available.
Best Time to Install Solar in Spokane
In Spokane, solar panels produce electricity year-round, but output peaks during spring and early fall when sunshine and moderate temperatures combine for peak efficiency. The best time to install is whenever you can book an installer — demand is growing. Most Spokane solar installations take 1-3 days on the roof, plus 2-6 weeks for permitting and utility interconnection.
How We Calculate These Costs
Our Spokane solar estimates are based on multiple data sources, updated quarterly:
- Panel pricing: National average module and installation costs from EnergySage, NREL, and installer data, adjusted for Washington regional pricing
- Solar irradiance: NREL PVWatts and NASA POWER data for Spokane sunshine hours and solar potential
- Electricity rates: EIA state-level residential electricity rates for Washington
- Incentives: DSIRE database for federal, state, and local solar incentives
- Satellite measurements: Google Project Sunroof and proprietary AI models for roof area, pitch, and shade analysis
Estimates are for planning purposes. Actual costs vary based on roof condition, shade, panel orientation, and installer pricing. We recommend getting 3 quotes from licensed Spokane solar installers.
Frequently Asked Questions — Spokane Solar
How much do solar panels cost in Spokane, WA?
The average solar panel system in Spokane costs $21,542 to $29,145 before the 30% federal tax credit. After the credit, your net cost drops to $15,079 to $20,401. The exact cost depends on system size, panel type, and installer. Monocrystalline panels cost $2.56/watt, while polycrystalline panels run $2.16/watt.
How long does it take for solar panels to pay for themselves in Spokane?
In Spokane, the average solar payback period is 10.5 years based on current electricity rates of 10.8 cents/kWh and 1576 annual sunshine hours. Your system will save approximately $1,685 per year, and over 25 years, that adds up to $42,125 in total savings. After the payback period, you’re essentially getting free electricity.
What solar incentives are available in WA?
The biggest incentive is the 30% federal Investment Tax Credit (ITC), which reduces your solar cost by 30% — available through 2032 (stepping down to 26% in 2033). In WA specifically: Sales tax exemption + net metering. Full retail net metering available. These incentives combined can reduce your total cost by 30-50% depending on your situation.
How much can I save with solar panels in Spokane?
A typical 9.9 kW solar system in Spokane produces approximately 15,602 kWh per year, saving about $1,685 annually at current electricity rates. Over 25 years, that adds up to roughly $42,125 in total savings. Your actual savings depend on your electricity usage, roof orientation, and shade.
Is solar worth it in Spokane, WA?
With 1576 annual sunshine hours and a 10.5-year payback period, solar is a strong investment for most Spokane homeowners. The 30% federal tax credit ($7,603 on an average system) plus Washington incentives make the economics favorable. Spokane solar systems typically increase home value by 3-4%.
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