Solar Panel Cost Guide in Washington, NJ (2025 Update)
- Washington Solar Installation Cost: $11,485
- 25-Year Savings: $12,112
- Payback Period: 13.6 Years
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Average Cost of Solar Panels in Washington
We break down average solar pricing in Washington.
Currently, the national average cost of solar panels is $2.66 per watt. However, in Washington, the average cost of solar panels is 4 per watt.Since a 4.6-kW system is needed to cover the energy consumption of a typical home in Washington, the average price of going solar will be about $11,485 after claiming the federal solar tax credit of 0.
Remember that the numbers above are only averages. The price you’ll pay for solar may look quite different based on your household energy consumption, the type of solar system you choose, your solar contractor and more.With average savings of about $17,000 on utility bills over 20 years, many homeowners in Washington find installing solar panels can pay off big.
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Solar savings over time in Washington
| Year | Return on Investment |
|---|---|
| 1 years | $-9,987 |
| 3 years | $-6,990 |
| 5 years | $-3,994 |
| 7 years | $-998 |
| 9 years | $1,999 |
| 11 years | $4,995 |
| 13 years | $7,992 |
| 15 years | $10,988 |
| 17 years | $13,984 |
| 19 years | $16,981 |
| 21 years | $19,977 |
| 23 years | $22,973 |
| 25 years | $25,970 |
Top Solar Installers in Washington
Many homeowners decide to hire a solar panel company since trying to install solar panels on your own can be hard. Solar installers provide key benefits that can help you get the most out of your investment, like warranties, monitoring and free repairs.
If you’d like to switch to solar energy but still aren’t certain which solar system company to go with, here are our suggestions for providers nearby:
See all of the solar companies in Washington
Factors that Affect Solar Panel Costs in Washington
Though the average cost of a solar system in Washington is $11,485, your final cost may be higher or lower than that. There are several factors that can have a sizable impact on the cost of a residential solar panel installation. Below are some of the more crucial things to keep in mind.
Solar Equipment
One of the most significant factors to consider when it comes to the cost of installing solar panels is the size of the solar system, which is measured in kilowatts (kW). The more energy your household uses, the larger your system will likely need to be. You can expect to spend around $3,530 per kilowatt in Washington.The brand and kind 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 have a higher price tag than other brands. Efficiency also matters. Whether you’re opting for high efficiency because you have limited roof space 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 raise the cost.
Solar Financing Terms
If paying for solar panels in cash is too expensive, solar loans are a popular choice because they decrease your upfront costs and allow you to pay for your system over five to seven years on average.It’s a good idea to factor 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 how long it’ll take to pay off 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 hire to install your solar system. As with choosing a company to build a deck or pool, for example, there are plenty of solar installers that offer a range of services at different costs.Some companies only sell products with high efficiency and therefore a higher price point — like Maxeon solar panels from SunPower or Tesla Powerwall batteries — so choosing those installers will generally come at a higher cost. It’s best to do some research and find a company that has the products, warranties and services you want and also fits within your budget.
Solar Panel Cost Data by System Size
| System size | Cost per system watt | Solar system cost | 25-Year savings | Payback period |
|---|---|---|---|---|
| 6 kW | $3.67 | $15,419 | $11,850 | 14.1 years |
| 8 kW | $3.60 | $20,163 | $16,195 | 13.9 years |
| 10 kW | $3.53 | $24,710 | $20,739 | 13.6 years |
| 12 kW | $3.46 | $29,059 | $25,479 | 13.3 years |
| 14 kW | $3.39 | $33,210 | $30,418 | 13.0 years |
| 16 kW | $3.32 | $37,164 | $35,554 | 12.8 years |
| 18 kW | $3.25 | $40,920 | $40,888 | 12.5 years |
| 20 kW | $3.18 | $44,478 | $46,419 | 12.2 years |
How to Save on Solar Panels
The solar panel company you opt for will affect not only your total costs, but also the kinds of solar panel brands, warranties, and other equipment you have access to. When choosing a solar company, there are several important things you should keep in mind, such as:
- Reputation: The North American Board of Certified Energy Practitioners (NABCEP) is a respected certification organization for renewable energy professionals. If your solar panel installer is NABCEP-certified, it likely has a good reputation and is qualified to install your solar system. Another way you can look into your installer’s reputation is by reading reviews.
- Solar Panel Brands: Not all solar companies offer the same brands of solar panels, so the brand and type of panel you want can play a big role in the company you choose.
- Warranty: Companies typically offer different kinds of warranties that provide different kinds of coverage. A 25-year, all-inclusive warranty is the gold standard.
- Contract: It’s important to look over your solar installer’s contract fully to understand what services they will provide, what the warranty covers and what expectations you should have about the installation process.
EcoWatch's Washington, NJ Solar Cost FAQs
What is the average cost of installing solar panels in Washington?
The average cost of solar panels in Washington is about $17,650 for a 5-kW system and $35,300 for a 10-kW system before the ITC, but the real cost will depend on things such as the type of solar panels you want, what size system you need and how much energy you consume.
Are solar panels free in Washington?
You can’t get solar panels for free in Washington. However, you may still be able to install them on a lower budget. You can lease solar panels for a low upfront cost or, if you’d prefer to own your solar panels, you can finance them with a solar loan.
Is it worth going solar in Washington?
Whether or not solar panels are worth it depends on some different factors like the cost of electricity near you and how much direct sunlight your roof gets.
What solar power system size is right for my home?
To figure out how many solar panels you need, you need to know how much energy your home uses and how much sunlight your home gets. For a general estimate, however, since each panel can generally produce about 250 to 400 watt-hours per hour, the average home will need 20 to 35 panels.
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.