15 Best Solar Companies in Thousand Oaks, CA (2025 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Thousand Oaks based on:
Customer review scores
Service area for Thousand Oaks, CA
Company policies and services offered
Accreditations and certifications
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Average Thousand Oaks homeowner saves $2,097/year with solar panels
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Best Solar Companies in Thousand Oaks
If you’re on the hunt for the best solar companies in Thousand Oaks, sorting through so many options can be demanding, but it can pay off since switching to solar energy can offer so many fantastic benefits. Over 20 years of offsetting your energy costs with a solar system, you can save about $25,000 on your utility bills.
As you start your search for the best solar companies in Thousand Oaks, you’ll notice that there are a large number of providers to choose between. So, we’ve put together an expertly curated list of the top solar companies in the area.To get free quotes from the top-rated solar companies in Thousand Oaks, click the "get quote" button below.
EcoWatch Rankings for Solar Companies in Thousand Oaks

Imperial Solar
Reliable Customer Support
Informative Resources
Free Quotes
Limited information available on website
Services Offered
Consultation
Battery Storage
Panel Installation
Grid-Tied Solar System


AmeriGreen Solar
Clear Pricing Policy
Prompt Service Delivery
Free Quotes
Reliable Customer Support
Limited information available on website
Services Offered
Panel Installation
Financing Assistance
Consultation

CERVUS Solar & Construction
Prompt Service Delivery
Informative Resources
Clear Pricing Policy
Free Quotes
Reliable Customer Support
Limited information available on website
Services Offered
Battery Storage
Consultation
Panel Installation
Financing Assistance
Cleaning and Maintenance
Skilled Repairs

Powerfull Solar, Inc
Informative Resources
Free Quotes
Reliable Customer Support
Prompt Service Delivery
Limited information available on website
Services Offered
Solar Carports
Consultation
Permit Assistance
Financing Assistance
Cleaning and Maintenance
Panel Installation

ProSolar California
Reliable Customer Support
Informative Resources
Free Quotes
Limited information available on website
Services Offered
Panel Installation
Battery Storage
Tesla Powerwall
Financing Assistance


Altadena Energy & Solar
Clear Pricing Policy
Free Quotes
Reliable Customer Support
Informative Resources
Limited information available on website
Services Offered
Battery Storage
Permit Assistance
Panel Installation

Solar Source
Reliable Customer Support
Informative Resources
Family-Operated Business
Free Quotes
Clear Pricing Policy
Limited information available on website
Services Offered
Permit Assistance
Panel Installation
Financing Assistance


Imperium Energy
Clear Pricing Policy
Free Quotes
Informative Resources
Reliable Customer Support
Limited information available on website
Services Offered
Financing Assistance
Panel Installation
Permit Assistance
Consultation

Planet Connection Inc
Informative Resources
Clear Pricing Policy
Prompt Service Delivery
Limited information available on website
Services Offered
Solar Carports
Panel Installation
Financing Assistance

United Electric, Solar & Plumbing
Reliable Customer Support
Family-Operated Business
Informative Resources
Clear Pricing Policy
Limited information available on website
Services Offered
Panel Installation
Skilled Repairs

Solar Discovery
Free Quotes
Reliable Customer Support
Clear Pricing Policy
Informative Resources
Prompt Service Delivery
Limited information available on website
Services Offered
Panel Installation
Cleaning and Maintenance
Skilled Repairs
Battery Storage
Permit Assistance
Financing Assistance

California Home Solar
Reliable Customer Support
Clear Pricing Policy
Informative Resources
Prompt Service Delivery
Free Quotes
Limited information available on website
Services Offered
Skilled Repairs
Consultation
Panel Installation
Financing Assistance
Methodology: How We Ranked the Best Solar Companies in Thousand Oaks
EcoWatch's solar experts analyzed each solar company in Thousand Oaks based on criteria such as its reputation in the industry, customer reviews, services, warranty coverage and financing. Using this solar methodology, we used the data we collected to rate and rank each company and narrow down our picks for the best solar companies in Thousand Oaks
Below are some the criteria we examined specifically for California solar companies
- Brand reputation and certifications (20%): We take each company's Better Business Bureau (BBB) score into consideration, as well as how long the installer has been in business (at least 5 years is required, 10 preferred) and what type of solar certifications it holds.
- Customer reviews (20%): Trust is a top priority at EcoWatch, so we take customer experience under close consideration. We scour different review sites and customer testimonials when ranking our top solar companies, checking sites such as Trustpilot and Google Reviews. We also consider any potential complaints or lawsuits filed against these companies and award or remove points accordingly.
- Warranty (20%): A company earns a perfect score in this category if it offers 25-year warranties that cover performance, product and workmanship. The industry standard that we measure companies against is 25-year product and performance warranties, along with a 10-year workmanship warranty. We also look closely into the track record of the post-installation support each company provides in terms of honoring its contracts
- Solar services (10%): All of the companies we review install solar panels, but we award companies higher points if they offer additional services for customers, like battery installation, energy-efficiency audits, and EV chargers.
- Pricing and financing (10%): It's hard to get exact quotes for solar projects, but we use marketplace research to determine how each company prices its equipment and installation services. Additionally, companies that offer more help for panel financing — like in-house loans, leases, or PPAs — score higher than those that don't.
- Availability (10%): The bigger the service area, the higher the company will score.
- Transparency and accessibility (5%): Solar installers that offer free consultations and easy contact methods score higher in this category.
- Environmental, social and corporate governance factors (5%): A company earns a perfect score in this category if it offers public data disclosure, addresses end-of-life (EOL) products or processes, and demonstrates a commitment to uplifting the communities that it serves.
The Cost and Benefits of Solar in Thousand Oaks
When choosing a solar company, most homeowners or business owners wonder about the costs the most.There are a few factors you should consider when trying to determine costs and your potential savings, such as:
- Your location: This influences how much sunlight your roof receives, which helps determine how many panels you need.
- System size and type: Some models are more expensive than others, so the one you decide on can raise or lower your initial investment. Plus, the more solar panels you need to get, the more it'll cost.
- Your current electric bills: Solar panels can noticeably lower, or completely get rid of, your utility bills. In Thousand Oaks, you can save an average of $1,185 a month.
- Incentives: Along with the federal Solar Investment Tax Credit (ITC), which lets you receive a tax credit curretnly worth 0 of your total installation cost, your state or local government may offer additional tax exemptions, credits or rebates that will help you save even more. Excluding incentives, you can save an average of $25,000 over the first 20 years with your system, too.
Although a solar panel system costs a decent chunk of money upfront, it can save you much more in the long term. The question of how much, though, depends on a number of factors, like the size of your house and your current power bills.
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Solar Incentives in Thousand Oaks
One of the good things about installing a solar panel system is receiving incentives from the government.On top of the federal tax credit incentive, there are also some state- and city-level programs, which in the majority of cases, stack with the federal incentive, so you can save even more. Our article on solar incentives goes over more detailed information on the incentives you can find in Thousand Oaks.
Environmental Impact of Switching to Solar in Thousand Oaks
One of the best reasons to adopt solar energy is to reduce your dependence on nonrenewable energy sources like burning fossil fuels, which are destructive for the environment.Many homeowners might be wondering how much exactly they can impact the environment by switching to solar in Thousand Oaks, though. For people who want to help preserve the planet, using solar power is an easy decision, especially since Thousand Oaks produces a fair amount of carbon dioxide emissions from its energy generation.In Thousand Oaks, the average household can reduce their carbon footprint by 50 pounds a year once they go solar. As you can see, going solar has so many other rewards besides saving money. One of the major ones is that you can help save the planet too.
EcoWatch's Thousand Oaks, CA Solar Company Rankings FAQs
Which solar company is the best near me?
The top local solar company in Thousand Oaks is Imperial Solar, with a rating of 5.00 stars.
What is the negative environmental impact of solar panel manufacturing?
Manufacturing solar panels requires chemicals and produces toxic waste that can be dangerous for the environment, which is the main drawback of solar panels.
Is it worth putting solar panels on my home?
Solar panels call for a significant upfront investment that usually costs at least ten thousand dollars, but whether or not solar panels are worth it depends on a range of factors like the cost of electricity near you and how much direct sunlight your roof gets.
How often do solar panels need to be replaced?
On average, the lifespan of solar panels is about 25 to 30 years. Some even last up to 50 years, but efficiency decreases by about 0.8% each year. You can choose to replace them sooner if you want to maintain a higher level of energy production.
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.