Solar Panel Cost Guide in SeaTac, WA (2024 Update)

  • SeaTac Solar Installation Cost: $10,925
  • 25-Year Savings: $10,641
  • Payback Period: 14.6 Years

See cost of a solar system near you:

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated April 21, 2024

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We work with a panel of solar experts to create unbiased reviews that empower you to make the right choice for your home. No other site has covered renewables as long as us, which means we have more data and insider information than other sites. Our rankings are never affected by revenue or partnerships.

Average Cost of Solar Panels in SeaTac

We go over average solar pricing in SeaTac.

The national average cost of solar panels is $2.66 per watt, but in SeaTac it’s 4 per watt.Since a 4.3-kW system is needed to cover the energy needs of a typical home in SeaTac, the average price of going solar will be about $10,925 after claiming the federal solar tax credit of 0.

These figures are just averages, and your own solar costs will vary based on factors unique to your home and what company you choose to go with.With typical savings of about $17,000 on utility bills over 20 years, many homeowners in SeaTac find investing in solar can pay off big.

You can click the button below to get connected with a pre-vetted solar company in SeaTac that can help you get a more accurate cost estimate for your home.

Solar savings over time in SeaTac

YearReturn on Investment
1 years$-9,649
3 years$-7,098
5 years$-4,546
7 years$-1,994
9 years$558
11 years$3,110
13 years$5,661
15 years$8,213
17 years$10,765
19 years$13,317
21 years$15,869
23 years$18,421
25 years$20,972

Top Solar Installers in SeaTac

Many homeowners opt for a solar installation company since installing solar panels yourself can be time-consuming. Another upside of going with a solar company is that they can help you optimize your ROI by reducing your future costs of repairs and replacements due to warranties and helping you learn about local incentives you can take advantage of.

If you’d like to make the switch to solar but still aren’t sure which solar system installer to go with, here are our recommendations for providers in SeaTac:

Best Technology

Tesla Energy

★★★★★
3.2
  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

See all of the solar companies in SeaTac

Factors that Affect Solar Panel Costs in SeaTac

For many SeaTac homeowners, the decision to install a solar energy system comes down to cost. However, the range of solar installation costs can be quite wide in SeaTac, with typical prices between $20,000 to $40,000. There are a number of factors that greatly influence the price you’ll pay, which we'll go over below.

Solar Equipment

Solar system size, which is measured in kilowatts, is one of the largest factors that determines the overall cost of going solar. That’s why it’s a priority to accurately gauge the size of the solar energy system needed for your home by figuring out your energy needs.There are a lot of different solar panel brands and the one you choose also changes the cost. Generally speaking, the brands that offer higher efficiency tend to also be more expensive. In addition, the type of equipment you choose can affect your total cost. If you only need panels, your system will be much less expensive than if you also need solar batteries or an electric vehicle charger.

Solar Financing Terms

Solar panels can save you money on power bills over many years, but they can also be a big investment. That’s why many SeaTac homeowners decide to finance their solar panel systems to offset upfront costs.It’s wise 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 the amount of time it’ll take to pay off the loan.

Solar Panel Installation Company

The remaining major cost factor you should take into consideration is the installer you choose. Given the growing popularity of green energy solutions in SeaTac, you’ll have many options to choose from, but each comes at varying price points for labor and equipment.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 choose a company that offers the products, warranties and services you’re looking for and also is within your budget.

Solar Panel Cost Data by System Size

System sizeCost per system wattSolar system cost25-Year savingsPayback period
6 kW$3.73$15,681$10,18315.2 years
8 kW$3.66$20,506$13,97914.9 years
10 kW$3.59$25,130$17,97714.6 years
12 kW$3.52$29,553$22,17514.3 years
14 kW$3.45$33,775$26,57514.0 years
16 kW$3.37$37,796$31,17613.7 years
18 kW$3.30$41,615$35,97713.4 years
20 kW$3.23$45,234$40,98013.1 years

How to Save on Solar Panels

The solar installer you go with will impact not only your total costs, but also the kinds of solar panel brands, warranties, and other equipment you can get. When choosing a solar company, there are some important things you should consider, such as:

  • Solar Panel Brands: Not all solar installers carry the same brands of solar panels, so the brand and type of panel you want can play a substantial role in the company you hire.
  • Installation Process: Make sure you’re on the same page with the installer with regard to how the installation process will go and what you need to do before your solar system is installed, such as updating your electrical system or roof.
  • Reputation: The North American Board of Certified Energy Practitioners (NABCEP) is a respected certification organization for clean 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 verify your installer’s reputation is by reading reviews.
  • Contract: It’s important to look over your solar installer’s contract closely to understand what services they will provide, what the warranty covers and what you can expect about the project timeline.

Best Technology

Tesla Energy

★★★★★
3.2
  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

EcoWatch's SeaTac, WA Solar Cost FAQs

What is the average cost of installing solar panels in SeaTac?

The average cost of solar panels in SeaTac is about $17,950 for a 5-kW system and $35,900 for a 10-kW system before the ITC, but the actual cost will depend on things like the type of solar panels you want, what size system you need and how much energy you use.

Are solar panels free in SeaTac?

You can’t get solar panels for free in SeaTac. However, you may still be able to afford them on a lower budget. You can lease solar panels for a low upfront cost or, if you’d rather own your solar panels, you can finance them with a solar loan.

How much can I save on electricity bills after switching to solar?

It is possible to eliminate your electricity bills with solar panels, but for most homeowners in SeaTac, 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 contact a local solar installer to see how many panels can fit on your roof.

What solar power system size is right for my home?

To figure out what solar panel system size you need, you need to know how much energy your home needs and how much sunlight your home gets. For a general estimate, however, since each panel can usually produce about 250 to 400 watt-hours per hour, the average household 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.

Company research was conducted by Melissa Smith and Karsten Neumeister. Local data analysis was conducted by James Savino. See something we missed or could do better? Email the editor.