Solar Panels in Spokane, Washington - Costs, Installation & Rebates
19 Oct 2024
Reviewed October 2026 · How we research our guides
Solar Panel Installation in Spokane
Spokane, Washington presents unique opportunities for solar panel installation despite its cold climate reputation. While the city experiences harsh winters, Spokane receives approximately 171 sunny days per year, providing sufficient solar irradiance for effective energy generation. The cold temperatures actually benefit solar panel efficiency, as photovoltaic cells perform better in cooler conditions. With Avista's current electricity rate of 9.8¢/kWh serving Spokane County's 228,989 residents, homeowners can realize significant savings through solar adoption, especially considering Washington's net metering policies that allow excess energy to be sold back to the grid.
The installation process in Spokane requires careful consideration of snow load requirements and proper panel positioning to maximize winter sun exposure. Local installers familiar with Spokane's building codes and climate conditions can design systems that withstand heavy snow loads while optimizing energy production throughout the year. Avista's interconnection process is streamlined for residential solar installations, making it easier for Spokane homeowners to connect their systems to the grid and begin generating clean energy while reducing their monthly electricity bills.
Solar Panel Costs in Spokane
| System Size | Total Cost | Annual Savings | Payback Period |
|---|---|---|---|
| 5kW | $15,750 | $588 | 26.2 years |
| 6kW | $18,900 | $706 | 26.2 years |
| 8kW | $25,200 | $941 | 26.2 years |
Solar Incentives in Spokane
Spokane residents may benefit from several solar incentives that can reduce installation costs. The federal Investment Tax Credit (ITC) ended for systems installed after December 31, 2025, so incentives now come from Washington state and local utility programs. Washington state offers benefits through its renewable energy sales tax exemption, eliminating the 6.5% state sales tax on solar equipment purchases. Avista participates in Washington's net metering program, allowing customers to receive credit for excess solar energy fed back into the grid at the retail electricity rate of 9.8¢/kWh. Additionally, Spokane County may offer property tax exemptions for renewable energy systems, ensuring that adding solar panels doesn't increase your property tax assessment despite adding value to your home.
Best Solar Companies in Spokane
When selecting a solar installer in Spokane, prioritize companies with proper Washington state electrical contractor licensing and NABCEP-certified installers who understand local climate challenges and building codes. Look for installers with extensive experience in cold-weather installations and knowledge of snow load calculations specific to Spokane's requirements. Quality installers should offer comprehensive warranties covering equipment (typically 20-25 years for panels, 10-15 years for inverters) and workmanship (minimum 10 years). Verify that potential contractors carry adequate insurance, provide detailed proposals with energy production estimates based on Spokane's solar irradiance data, and offer transparent pricing with no hidden fees. Check Better Business Bureau ratings, online reviews, and ask for local references from recent Spokane installations to ensure reliability and customer satisfaction.
Solar ROI in Spokane
Solar return on investment in Spokane varies based on system size and energy consumption patterns, and returns over the system's 25-year lifespan are now more modest. With Avista's electricity rate of 9.8¢/kWh and average annual rate increases of 2-3%, a typical 6kW system can generate around $706 in annual savings. Now that the federal tax credit has ended, the payback period is about 26 years, after which homeowners may enjoy low-cost electricity for any remaining system life. Over 25 years, savings can reach up to $17,650 to $21,000 depending on utility rate increases and system performance. While Spokane's payback period is longer than sunnier climates, the combination of net metering, stable utility rates, and long-term energy cost protection can make solar a viable long-term option for reducing electricity expenses and increasing energy independence.
Frequently Asked Questions
How much do solar panels cost in Spokane?
Solar panel costs in Spokane typically range from $2.50 to $3.50 per watt installed. A standard 6kW residential system costs approximately $18,900 before incentives; the federal tax credit ended for systems installed after December 31, 2025. Total costs include panels, inverters, mounting equipment, permits, and professional installation. Prices vary based on equipment quality, roof complexity, and installer selection, but Spokane's competitive solar market helps keep costs reasonable for homeowners.
What rebates are available in Spokane?
Spokane residents may be able to access Washington state's sales tax exemption on solar equipment (saving 6.5%) and net metering credits through Avista at the full retail rate of 9.8¢/kWh; the federal Investment Tax Credit ended for systems installed after December 31, 2025. Spokane County may offer property tax exemptions for renewable energy systems, and some neighborhoods may qualify for additional local incentives. These incentives can lower total system costs and provide ongoing savings through net metering credits.
How do I choose a contractor in Spokane?
Choose a Spokane solar contractor with Washington state electrical licensing, NABCEP certification, and specific experience with cold-climate installations. Verify insurance coverage, check BBB ratings and local references, and ensure they provide detailed energy production estimates based on Spokane's solar conditions. Quality contractors offer comprehensive warranties (20+ years equipment, 10+ years workmanship), transparent pricing, and handle all permits and Avista interconnection paperwork. Avoid door-to-door sales and get multiple quotes from established local installers.