Solar Panel Cost Guide in Washington, CT (2024 Update)

  • Washington Solar Installation Cost: $12,323
  • 25-Year Savings: $17,819
  • Payback Period: 11.4 Years

See cost of a solar system near you:

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated May 20, 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 Washington

Let’s have a look at the average cost of solar panels in Washington.

Currently, the national average cost of solar panels is $2.66 per watt. However, in Washington, the average cost of a solar system is 4 per watt.The average Washington homeowner needs a 4.7-kilowatt system, which would cost about $12,323 with the federal tax credit, or $17,622 before the 0 tax credit is applied.

The true cost of your system can go higher or lower than the average in Washington based on a few factors, such as the kind of solar panels you choose and the solar installer you hire.But, once you've paid the upfront cost of installation, the savings for most homeowners is quite fruitful, with a net average savings of about $22,000 over 20 years on utility bills.

You can click the button below to get connected with a top solar installer in Washington for a quote for your home.

Solar savings over time in Washington

YearReturn on Investment
1 years$-10,479
3 years$-6,791
5 years$-3,103
7 years$585
9 years$4,273
11 years$7,961
13 years$11,649
15 years$15,337
17 years$19,025
19 years$22,713
21 years$26,401
23 years$30,089
25 years$33,777

Top Solar Installers in Washington

Trying to install solar panels yourself can be a time-consuming project, which is why hiring a solar installation company is a good option for many homeowners. A solar installer can also help save you money over the lifespan of your system by providing warranties, repairs and part replacements.

There are a number of licensed solar professionals that can take care of your solar installation project. Here are our suggestions:

Best Regional Coverage

Momentum Solar

★★★★★
4.5
  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

Best for Leasing

Sunrun

★★★★★
4.0
  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

Best Social Impact

Palmetto Solar

★★★★★
4.0
  • Expansive service area
  • Makes charitable contributions
  • Certified B Corp
  • No leases or PPAs
  • Quality of installation may vary by location

See all of the solar companies in Washington

Factors that Affect Solar Panel Costs in Washington

There are several factors that can determine your solar panel installation cost, such as the size of your system, the equipment you choose, your financing options and the specific company that performs the installation.

Solar Equipment

Solar system size, which is measured in kilowatts, is one of the largest factors that influences the overall cost of going solar. Because of that, it’s a priority to accurately assess the size of the solar energy system needed for your home by figuring out your typical energy use.The brand and kind of equipment you want for your solar system can raise or lower 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 can expect a higher equipment cost, but this can typically lead to more savings over time. Also, if you want additional equipment like an electric vehicle charger or solar batteries, this will also raise the cost.

Solar Financing Terms

If paying for a solar system out of pocket is difficult, solar loans are a solid option because they reduce your upfront costs and let you pay for your system over a term of, on average, between five and seven years.When considering your overall cost, you should also calculate the interest you’ll pay if you decide on a solar loan. Also, paying a higher down payment can reduce the total interest paid over time.

Solar Panel Installation Company

The solar company you choose to handle your switch to solar energy can play a role in your total costs. There are about 3 solar installation companies operating throughout Washington, and each can charge different amounts for labor and equipment.The size of the company sometimes plays the most considerable role in the cost of installation. Larger national companies, like SunPro and Sunrun, often have lower prices because they have access to more resources and bulk 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 discount can bring their pricing lower to compete with bigger names.

Solar Panel Cost Data by System Size

System sizeCost per system wattSolar system cost25-Year savingsPayback period
6 kW$3.90$16,380$18,15411.9 years
8 kW$3.83$21,420$24,62611.6 years
10 kW$3.75$26,250$31,30711.4 years
12 kW$3.67$30,870$38,19911.2 years
14 kW$3.60$35,280$45,30010.9 years
16 kW$3.52$39,480$52,61210.7 years
18 kW$3.45$43,470$60,13310.5 years
20 kW$3.38$47,250$67,86510.3 years

How to Save on Solar Panels

There are a lot of solar installers to choose from, all of which offer different warranties, solar panel models and price points. To help you decide on the right company for you, here are some tips to keep in mind:

  • Contract: When reading through your solar installer’s contract, ask for clarification about any terms you’re not sure of and make sure you understand what happens in scenarios such as a system part breaking or if the company goes out of business.
  • Solar Panel Brands: Homeowners will have different preferences for panels based on their locations and how much efficiency they need. Although there are many options for which model of solar panel you can get, not every company will have access to the exact one you may want or need, so be sure to take a look at their list of options before deciding.
  • Reputation: Solar system installers that have great reviews from their customers and that have been in business for many years most likely offer good-quality solar panel installation and expertise.
  • Installation Process: One of the most important things to understand when adopting solar energy is the installation process itself. Be sure to clarify any details you should know with your solar installer, such as what permits you should acquire and what the project timeline is.

Best Regional Coverage

Momentum Solar

★★★★★
4.5
  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

Best for Leasing

Sunrun

★★★★★
4.0
  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

Best Social Impact

Palmetto Solar

★★★★★
4.0
  • Expansive service area
  • Makes charitable contributions
  • Certified B Corp
  • No leases or PPAs
  • Quality of installation may vary by location

EcoWatch's Washington, CT Solar Cost FAQs

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

This is a difficult question to answer exactly, because the cost depends on a few different factors. Broadly speaking, it costs about $18,750 for a 5-kW system and $37,500 for a 10-kW system after the ITC is applied. It will cost more if you want other solar equipment or more efficient panels, or if you have above-average energy needs. On the flip side, you can spend less if you go with a smaller solar panel system or less efficient solar panels.

Is it better to lease or buy solar panels in Washington?

Leasing solar panels can be an attractive choice, because it typically comes with low or $0 upfront payments. The drawback is that you won’t be able to save as much. If you lease, you don’t own the system, so you can’t claim any incentives and your home value won’t increase. Buying solar panels is a better way to go if you want to get the most savings.

Is it worth going solar in Washington?

Solar panels can be a great investment for most homeowners, but they might not be worth it for everyone. If your home doesn't get a lot of direct sunlight and/or your power bills are already reasonably low, solar panels might not be for you.

How often do you have to replace solar panels?

Though the average lifespan of solar panels is 25 to 30 years, that doesn't mean they should be disposed of at that time. What this means is how much energy they produce 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.

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.