How much do solar panels cost for the average house in Washington in 2018?
As of December 2018, the average cost of solar panels per watt in Washington is $3.47/watt. A typical 6000 watt (6 kW) solar system is $20,842 before the federal solar credit and $14,590 after claiming the federal solar tax credit.
Current solar panel cost in Washington based on offers available from local solar companies for residential solar power systems
|System size*||Average cost
(before tax credit)
(after tax credit)
|4 kW||$3.70||267 sq/ft||$14,789||$10,353|
|5 kW||$3.43||333 sq/ft||$17,155||$12,009|
|6 kW||$3.47||400 sq/ft||$20,842||$14,590|
|8 kW||$3.49||533 sq/ft||$27,894||$19,526|
|10 kW||$3.74||667 sq/ft||$37,445||$26,211|
|12 kW||$3.29||800 sq/ft||$39,425||$27,597|
|20 kW||$2.95||1,333 sq/ft||$58,982||$41,287|
If you enter your zip code into the solar power calculator below you can find out how many solar panels you need for your home and see live current solar prices in your city for that size of solar system. This is the easiest way to cut to the chase because when it comes to solar panel cost knowing the average cost of solar panels (as we display in the tables on this page) doesn't really help you determine solar panel cost you would face to power your home with solar energy. Your home will be different to any other home and so solar panel cost is likely to be different to the average solar cost data.
Enter your zip code and power cost to calculate the right system size for your home and see live current solar offers in your city
|Cost of 5kW system
(before tax credit)
|Cost of 5kW system
(after tax credit)
|Solar panel cost in Adams||$3.53||9.77 kW||$17,643||$12,350|
|Solar panel cost in Asotin||No data available|
|Solar panel cost in Benton||$3.16||8.88 kW||$15,813||$11,069|
|Solar panel cost in Chelan||$3.08||6.21 kW||$15,417||$10,792|
|Solar panel cost in Clallam||No data available|
|Solar panel cost in Clark||No data available|
|Solar panel cost in Columbia||No data available|
|Solar panel cost in Cowlitz||No data available|
|Solar panel cost in Douglas||$3.32||9.40 kW||$16,608||$11,625|
|Solar panel cost in Ferry||No data available|
|Solar panel cost in Franklin||$3.18||8.91 kW||$15,898||$11,129|
|Solar panel cost in Garfield||No data available|
|Solar panel cost in Grant||$3.13||7.25 kW||$15,652||$10,957|
|Solar panel cost in Grays Harbor||No data available|
|Solar panel cost in Island||$4.34||7.69 kW||$21,684||$15,179|
|Solar panel cost in Jefferson||No data available|
|Solar panel cost in King||$3.98||7.48 kW||$19,924||$13,947|
|Solar panel cost in Kitsap||No data available|
|Solar panel cost in Kittitas||$2.97||8.17 kW||$14,861||$10,403|
|Solar panel cost in Klickitat||$2.62||9.17 kW||$13,112||$9,178|
|Solar panel cost in Lewis||$4.50||9.19 kW||$22,476||$15,733|
|Solar panel cost in Lincoln||No data available|
|Solar panel cost in Mason||No data available|
|Solar panel cost in Okanogan||No data available|
|Solar panel cost in Pacific||No data available|
|Solar panel cost in Pend Oreille||No data available|
|Solar panel cost in Pierce||$2.89||10.34 kW||$14,472||$10,130|
|Solar panel cost in San Juan||$4.23||11.65 kW||$21,151||$14,805|
|Solar panel cost in Skagit||No data available|
|Solar panel cost in Skamania||$3.30||9.75 kW||$16,523||$11,566|
|Solar panel cost in Snohomish||$3.98||7.65 kW||$19,893||$13,925|
|Solar panel cost in Spokane||No data available|
|Solar panel cost in Stevens||No data available|
|Solar panel cost in Thurston||No data available|
|Solar panel cost in Wahkiakum||No data available|
|Solar panel cost in Walla Walla||$3.37||11.74 kW||$16,853||$11,797|
|Solar panel cost in Whatcom||No data available|
|Solar panel cost in Whitman||No data available|
|Solar panel cost in Yakima||$3.34||9.05 kW||$16,697||$11,688|
How our solar panel cost calculator calculates how much solar panels will cost for your house in Washington?
Whilst it is great to have a ballpark average solar panel cost (see tables above) as a starting point, or even individual current solar offers from solar companies near you this doesn't help you if you don't know how many solar panels you need, how many square feet of usable roof space you have or how the electricity production from your roof may differ from the perfect roof.
The best way to get this information is to request a solar quote from one or more solar companies. However, for those that want to get a reasonably accurate online solar estimate before speaking to a solar company the Solar-Estimate.org solar power calculator has you covered.
The solar panel calculator estimates a system size while only requiring you to enter your address and power spend. It is not as accurate as if you uploaded a series of monthly power bills but it is a good place to start because it requires little effort. If you want to go further it will show live current solar offers in your area and then have one or more local solar companies provide accurate quotes if you validate your contact information.
Generally speaking, the aim of a solar panel installation is to install a solar power system that will produce the same amount of electricity that your home uses. This is because net metering laws limit the size of eligible solar systems to a system producing a similar amount of energy as your house uses.
This is why the solar calculator suggests a size of system that produces the same amount of electricity as what the software calculates you use, based on your monthly power bill. Because the calculator has a database of the electricity rates of your utility it can reverse engineer your usage from the amount you pay.
Calculate the cost of solar panels for your home in Washington
The "average" home may be nothing like yours and meaningful solar cost information needs to be tailored to the individual. Find out more about how much solar panels will cost for your home and get a solar estimate tailored specifically for your home and energy use.