Home solar in Washington: prices, net metering, what is left in 2026
What Washington homeowners pay for solar in 2026, how the state's export rules work, and which incentives survived - verified against state sources, town by town.
Installed home solar in Washington compares against the U.S. marketplace average of about $2.58 a watt - roughly $30,960 for 12 kW.
The 30% federal solar credit ended December 31, 2025 - Washington installations completed in 2026 get $0 from it.
A home battery in Washington runs about $12,000-$16,000 installed, before any state storage incentive.
The honest 2026 answer for Washington: solar pays back slower without the 30% credit - paybacks that ran 7-10 years often now run 10-14 - but electricity rates keep rising and hardware is the cheapest it has ever been. The deciding factor is Washington's export compensation, covered in the net metering section.
Washington rules that decide your payback
| Rule | Washington status |
|---|---|
| Export compensation (net metering) | Washington utilities must offer net metering at retail rate (excess kWh credited forward on the next bill) for systems up to 100 kW, but only until the earlier of June 30, 2029 or the date a utility's cumulative net-metered capacity reaches 4% of its 1996 peak demand — a threshold several utilities have already crossed, after which they may offer less than retail rate. |
| State incentive | Sales and use tax exemption on purchases and installation of solar energy systems (RCW 82.08.962 / 82.12.962) — a 100% exemption, taken at the point of sale, for systems generating at least 1 kW and no more than 100 kW AC, including installation labor |
| Sales tax on the system | Exempt |
| Property tax on added home value | No exclusion on record |
Retail-rate net metering is not guaranteed for the life of your system: several Washington utilities have already hit the 4%-of-1996-peak-demand cap and may set their own export terms, and the statewide obligation ends June 30, 2029 regardless — so confirm your specific utility's current tariff before signing a contract.
This guide is research, not advice: an independent summary of published prices and state rules. It is not an installer, lender or tax advisor - verify incentive eligibility with a licensed tax professional before relying on it.
What installed solar costs in 2026
| System size | Installed price (marketplace avg) | Notes |
|---|---|---|
| 6 kW | $15,480 | Small roof / low usage |
| 8 kW | $20,640 | Typical starter system |
| 10 kW | $25,800 | Family home with AC |
| 12 kW | $30,960 | Large home / EV charging |
| Home battery (optional) | $12,000-$16,000 | Backup power + self-consumption |
Compare solar quotes for Washington
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Disclosure: this is an independent guide. If you request quotes through a link here, the platform may pay this site a referral fee. That fee never changes your quotes.
The 30% federal tax credit is gone for 2026 installations
The federal Residential Clean Energy Credit (30%) was repealed by the One Big Beautiful Bill Act signed July 4, 2025. Per the IRS, the credit is not available for any property placed in service after December 31, 2025 - and the IRS counts the installation completion date, not the contract date.
Common questions
What happens if my installer goes out of business?
Panel and inverter warranties come from the manufacturers and survive, but the workmanship warranty usually dies with the company. That is a real risk in the post-credit shakeout - prefer installers with years of local history, and get manufacturer-backed workmanship coverage where offered.
Do I need a battery with my solar?
Not necessarily. Under full retail net metering, the grid effectively stores your surplus for free. Batteries earn their $12,000-16,000 price where export rates are low, outages are common, or time-of-use rates make evening self-consumption valuable.
How do I check if a solar quote is fair?
Divide the total price by the system's wattage. The U.S. marketplace average is about $2.58 per watt installed; $2.30-3.00 covers most fair quotes depending on roof complexity. Above that, ask exactly what you are paying extra for - in writing.
How much does home solar cost in 2026?
The U.S. marketplace average is about $2.58 per watt installed - roughly $15,500 for a 6 kW system and $31,000 for 12 kW, before any state incentives. Quotes meaningfully above that level deserve a written explanation of what justifies the premium.
How long do solar panels actually last?
Panels are typically warrantied for 25 years of production and commonly outlive it, losing about 0.5% output per year. Inverters are the component that usually needs replacement - typically once, around year 12-15, at a few thousand dollars.
Should I lease, get a PPA, or buy?
Buying keeps all savings and any incentives with you. Leases and PPAs put a company's equipment on your roof for 20-25 years, complicate a home sale, and in 2026 any tax benefits they advertise belong to the company under commercial rules - not to you. Read escalator clauses carefully.
Compare solar quotes for Washington
These platforms collect bids from licensed installers so you can compare against the same spec. Prices come from installers, not from this site.
Disclosure: this is an independent guide. If you request quotes through a link here, the platform may pay this site a referral fee. That fee never changes your quotes.
Prices by city
Aberdeen · Airway Heights · Albion · Algona · Almira · Anacortes · Arlington · Asotin · Auburn · Bainbridge Island · Battle Ground · Beaux Arts Village · Bellevue · Bellingham · Benton City · Bingen · Black Diamond · Blaine · Bonney Lake · Bothell · Bremerton · Brewster · Bridgeport · Brier · Buckley · Bucoda · Burien · Burlington · Camas · Carbonado · Carnation · Cashmere · Castle Rock · Cathlamet · Centralia · Chehalis · Chelan · Cheney · Chewelah · Clarkston · Cle Elum · Clyde Hill · Colfax · College Place · Colton · Colville · Conconully · Concrete · Connell · Cosmopolis · Coulee City · Coulee Dam · Coupeville · Covington · Creston · Cusick · Darrington · Davenport · Dayton · Deer Park · Des Moines · DuPont · Duvall · East Wenatchee · Eatonville · Edgewood · Edmonds · Electric City · Ellensburg · Elma · Elmer City · Endicott · Entiat · Enumclaw · Ephrata · Everett · Everson · Fairfield · Farmington · Federal Way · Ferndale · Fife · Fircrest · Forks · Friday Harbor · Garfield · George · Gig Harbor · Gold Bar · Goldendale · Grand Coulee · Grandview · Granger · Granite Falls · Hamilton · Harrah · Harrington · Hartline · Hatton · Hoquiam · Hunts Point · Ilwaco · Index · Ione · Issaquah · Kahlotus · Kalama · Kelso · Kenmore · Kennewick · Kent · Kettle Falls · Kirkland · Kittitas · Krupp · La Center · La Conner · LaCrosse · Lacey · Lake Forest Park · Lake Stevens · Lakewood · Lamont · Langley · Latah · Leavenworth · Liberty Lake · Lind · Long Beach · Longview · Lyman · Lynden · Lynnwood · Mabton · Malden · Mansfield · Maple Valley · Marcus · Marysville · Mattawa · McCleary · Medical Lake · Medina · Mercer Island · Mesa · Metaline · Metaline Falls · Mill Creek · Millwood · Milton · Monroe · Montesano · Morton · Moses Lake · Mossyrock · Mount Vernon · Mountlake Terrace · Moxee · Mukilteo · Naches · Napavine · Nespelem · Newcastle · Newport · Nooksack · Normandy Park · North Bend · North Bonneville · Northport · Oak Harbor · Oakesdale · Oakville · Ocean Shores · Odessa · Okanogan · Olympia · Omak · Oroville · Orting · Othello · Pacific · Palouse · Pasco · Pateros · Pe Ell · Pomeroy · Port Angeles · Port Orchard · Port Townsend · Poulsbo · Prescott · Prosser · Pullman · Puyallup · Quincy · Rainier · Raymond · Reardan · Redmond · Renton · Republic · Richland · Ridgefield · Ritzville · Riverside · Rock Island · Rockford · Rosalia · Roslyn · Roy · Royal City · Ruston · Sammamish · SeaTac · Seattle · Sedro-Woolley · Selah · Sequim · Shelton · Shoreline · Skykomish · Snohomish · Snoqualmie · Soap Lake · South Bend · South Cle Elum · South Prairie · Spangle · Spokane · Spokane Valley · Sprague · Springdale · St. John · Stanwood · Starbuck · Steilacoom · Stevenson · Sultan · Sumas · Sumner · Sunnyside · Tacoma · Tekoa · Tenino · Tieton · Toledo · Tonasket · Toppenish · Tukwila · Tumwater · Twisp · Union Gap · Uniontown · University Place · Vader · Vancouver · Waitsburg · Walla Walla · Wapato · Warden · Washougal · Washtucna · Waterville · Waverly · Wenatchee · West Richland · Westport · White Salmon · Wilbur · Wilkeson · Wilson Creek · Winlock · Winthrop · Woodinville · Woodland · Woodway · Yacolt · Yakima · Yarrow Point · Yelm · Zillah