Solar Panel Cost Guide in Washington, MI (2025 Update)
- Washington Solar Installation Cost: $17,270
- 25-Year Savings: $13,167
- Payback Period: 17.2 Years
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Average Cost of Solar Panels in Washington
Find out what the average cost of solar panels are in Washington.
In Washington, solar panels cost about 4 per watt on average.The average Washington homeowner needs a 6.1-kilowatt system, which would cost about $17,270 with the federal tax credit, or $24,696 before the 0 tax credit is applied.
Bear in mind that the figures above are only estimates based on the average energy use of Washington homeowners. The price of a solar system for your home may be different depending on factors unique to your situation, like your household energy use and solar contractor.For most homeowners, the upfront cost of solar power is worth paying. On average homeowners in Washington see about $16,000 in savings on utility bills over 20 years.
For a customized quote from a local solar company that has been pre-vetted by EcoWatch, click the button below.
Solar savings over time in Washington
| Year | Return on Investment |
|---|---|
| 1 years | $-15,878 |
| 3 years | $-13,093 |
| 5 years | $-10,308 |
| 7 years | $-7,524 |
| 9 years | $-4,739 |
| 11 years | $-1,954 |
| 13 years | $830 |
| 15 years | $3,615 |
| 17 years | $6,400 |
| 19 years | $9,185 |
| 21 years | $11,969 |
| 23 years | $14,754 |
| 25 years | $17,539 |
Top Solar Installers in Washington
Do-it-yourself solar panel installation is a way to cut costs, but it's an undertaking that can be a headache. Hiring a solar company can make your swap to solar power much easier. Local solar companies can also help you optimize your return on investment by walking you through any local incentives and by offering warranties and repairs.
If you’d like to switch to solar energy but still aren’t sure which solar company to go with, here are our suggestions for providers in Washington:
See all of the solar companies in Washington
Factors that Affect Solar Panel Costs in Washington
Even though the average cost of a solar system in Washington is $17,270, your actual cost may be above or below the average. There are many factors that can have a significant impact on the cost of a solar system installation. Below are some of the more crucial things to keep in mind.
Solar Equipment
The size of the solar energy system you need for your home, which is measured in kilowatts, is the most significant cost factor to consider. For every additional kilowatt you need, your total will most likely increase by about $4,060. The brand and type of equipment you want for your solar system can increase or decrease the price quite significantly. If you prefer a trusted brand name like Tesla or SunPower, these often come at a higher price than other brands. Efficiency also matters. Whether you’re opting for high efficiency because you have a small roof or just want maximum energy production, you will be looking at a higher equipment cost, but this can typically lead to greater savings over time. Also, if you want extra equipment like an electric vehicle charger or solar batteries, this will also increase the cost.
Solar Financing Terms
Most solar installers in Washington have solar loans, which reduce the initial cost of installing solar panels.It’s wise to include the interest you’ll pay in your final cost estimate. If you can afford to pay a larger down payment, you can reduce your total costs and the amount of time it’ll take to pay back the loan.
Solar Panel Installation Company
A final consideration when trying to figure out the cost of solar for your home or business in Washington is the company you choose to install your PV system. Similar to choosing a company to renovate your kitchen, for example, you’ll have no shortage of solar installers that provide a range of services at different costs.The size of the company can sometimes play the most significant role in the installation costs. Larger national companies, like SunPro and Sunrun, often have lower prices because of access to more resources and better pricing. Smaller local companies might be more costly, but they can sometimes have better customer service and more customization options, and the occasional sale or promotion can bring their pricing lower to compete with bigger companies.
Solar Panel Cost Data by System Size
| System size | Cost per system watt | Solar system cost | 25-Year savings | Payback period |
|---|---|---|---|---|
| 6 kW | $4.22 | $17,734 | $7,069 | 17.9 years |
| 8 kW | $4.14 | $23,191 | $9,880 | 17.5 years |
| 10 kW | $4.06 | $28,420 | $12,918 | 17.2 years |
| 12 kW | $3.98 | $33,422 | $16,184 | 16.8 years |
| 14 kW | $3.90 | $38,196 | $19,677 | 16.5 years |
| 16 kW | $3.82 | $42,744 | $23,397 | 16.2 years |
| 18 kW | $3.74 | $47,064 | $27,345 | 15.8 years |
| 20 kW | $3.65 | $51,156 | $31,520 | 15.5 years |
How to Save on Solar Panels
The company that does your solar system installation will affect the warranties and brands available to you, and it will also have an impact on your total cost. Because picking a company can be a challenge, we have some tips to help you, such as:
- Solar Panel Brands: The kind of solar panel you want plays a role in which installer you should go with, since different companies provide different panels.
- Contract: Look through the contract terms closely to make sure you understand the total cost, project timeline incentives and warranties.
- Installation Process: Make sure you’re on the same page with the company in regard to how the installation process will go and what you need to do before your solar panel system is installed, such as updating your electrical system or roof.
- Reputation: Solar companies that have great reviews from their customers and that have been in business for many years in most cases provide good-quality solar panel installation and expertise.
EcoWatch's Washington, MI Solar Cost FAQs
What is the average cost of installing solar panels in Washington?
The average cost of solar panels in Washington is about $20,300 for a 5-kW system and $40,600 for a 10-kW system before the ITC, but the real cost will depend on certain factors like the kind of solar panels you want, what size system you need and how much energy you consume.
What other factors should I consider in addition to cost when buying solar panels?
The initial cost is a crucial factor to consider, but whether it’s the most important for you depends on your reasons for going solar. In places where rooftop space is limited, efficiency can trump the cost. Other factors that are important to think about are the quality and durability of your solar panels.
How much can I save on electricity bills after installing solar panels?
It is possible to eradicate your electricity bills with solar panels, but for most homeowners throughout Washington, that will require at least a 10-kW system. Not all homes will have roofs that can accommodate that size system, so you’ll want to check with a local solar installer to see how many panels can fit on your roof.
How long do solar panels last in Washington?
Though the average lifespan of solar panels is 25 to 30 years, that doesn't mean they stop working completely at that time. What this means is their energy production will have decreased significantly after that point. You can replace them after having them for that long or you can continue to use them at a lower efficiency.
Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert's opinion on the top solar companies featured here, follow this link.