15 Best Solar Companies in Walnut, CA (2025 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Walnut based on:
Customer review scores- Service area for Walnut, CA
- Company policies and services offered
- Accreditations and certifications
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Average Walnut homeowner saves $2,108/year with solar panels
Why you can trust EcoWatch
Best Solar Companies in Walnut
Looking for the top solar companies in Walnut? Installing solar panels is an exciting home addition that many homeowners find rewarding for their wallets, communities and the planet. Solar panels aren't just good for the planet — your wallet will benefit too. After switching to solar power, you can save an average of $25,000 over 20 years, and this doesn't even include incentives.
In this article, we’ll help you find the best options in your area.To receive free quotes from the best solar companies in Walnut, you can click "get quote" below.
EcoWatch Rankings for Solar Companies in Walnut
SunGuide Solar Inc
Informative Resources- Free Quotes
Limited information available on website
Services Offered
Consultation- Panel Installation
Altadena Energy & Solar
- Free Quotes
- Reliable Customer Support
- Informative Resources
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Battery Storage
- Permit Assistance
- Panel Installation
SolarRepair
- Prompt Service Delivery
- Informative Resources
- Clear Pricing Policy
- Free Quotes
- Reliable Customer Support
- Limited information available on website
Services Offered
- Financing Assistance
- Panel Installation
- Solar Panel Upgrades
- Skilled Repairs
- Battery Storage
- Cleaning and Maintenance
Solar Source
- Informative Resources
- Clear Pricing Policy
- Free Quotes
- Family-Operated Business
- Reliable Customer Support
- Limited information available on website
Services Offered
- Panel Installation
- Financing Assistance
- Permit Assistance
SunSolar U.S.
- Informative Resources
- Free Quotes
- Prompt Service Delivery
- Reliable Customer Support
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Solar Carports
- Consultation
- Panel Installation
- Permit Assistance
- Battery Storage
- Financing Assistance
Green Integrations and Management Inc.
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Panel Installation
- Battery Storage
REPOWER OC
- Free Quotes
- Clear Pricing Policy
- Informative Resources
- Reliable Customer Support
- Prompt Service Delivery
- Limited information available on website
Services Offered
- Financing Assistance
- Panel Installation
Renew Earth Solar
- Limited information available on website
Services Offered
- Battery Storage
- Consultation
- Panel Installation
- Grid-Tied Solar System
SYNRG Solar - Home Energy Solutions
- Reliable Customer Support
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Consultation
- Panel Installation
Powerfull Solar, Inc
- Informative Resources
- Reliable Customer Support
- Free Quotes
- Prompt Service Delivery
- Limited information available on website
Services Offered
- Panel Installation
- Permit Assistance
- Financing Assistance
- Consultation
- Cleaning and Maintenance
- Solar Carports
ProSolar California
- Informative Resources
- Reliable Customer Support
- Free Quotes
- Limited information available on website
Services Offered
- Battery Storage
- Financing Assistance
- Panel Installation
- Tesla Powerwall
AmeriGreen Solar
- Free Quotes
- Reliable Customer Support
- Clear Pricing Policy
- Prompt Service Delivery
- Limited information available on website
Services Offered
- Panel Installation
- Financing Assistance
- Consultation
Helios Energy Global
- Limited information available on website
Services Offered
- Battery Storage
- Panel Installation
Imperial Solar
- Informative Resources
- Reliable Customer Support
- Free Quotes
- Limited information available on website
Services Offered
- Panel Installation
- Grid-Tied Solar System
- Battery Storage
- Consultation
CERVUS Solar & Construction
- Free Quotes
- Reliable Customer Support
- Prompt Service Delivery
- Clear Pricing Policy
- Informative Resources
- Limited information available on website
Services Offered
- Battery Storage
- Cleaning and Maintenance
- Skilled Repairs
- Panel Installation
- Consultation
- Financing Assistance
Methodology: How We Ranked the Best Solar Companies in Walnut
EcoWatch's solar experts analyzed each solar company in Walnut 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 Walnut
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 Walnut
Although solar panels can help save you money on energy bills over time, it’s necessary to take into consideration the upfront costs.The installation cost is just one important factor you should bear in mind when looking into getting solar panels. How much it'll cost and how much you can save depend on things such as:
- Incentives: Something that can reduce the cost of your solar project is the solar investment tax credit (ITC), which is a tax credit that’s equal to a percentage of the project cost. You can also save money on your utility bills, which can lead to an average of $25,000 of savings over 20 years.
- Choice of solar panels: The kind of solar panels you want will affect your total cost. High-efficiency monocrystalline panels will cost more upfront but can also save you more money over the lifetime of your system. If space isn't a constraint for your project, you can opt for a higher number of more affordable panels.
- Energy consumption: Installing a solar system may be too pricey an option for families that don’t use too much energy a month.
- Average daily sunlight: Since Walnut gets lots of sunlight, your solar panel system will most likely be able to produce enough energy to power your whole home, which affects how much your electricity bills will be.
So is a solar panel system worth it? Whether you hope to lower your electric bills, carbon dioxide emissions or both, solar panels are a solid investment for many Walnut homeowners.
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To find out how much you can help the environment and your wallet by making the switch to solar, try out the calculator below. You can also view our solar panel cost guide for Walnut, CA.
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Solar Incentives in Walnut
There are several reasons why going solar is a great investment. One of them consists of some government incentives you can take advantage of.State and city solar incentive programs vary by location and, sometimes, utility company. Many states offer rebates for solar power systems, in addition to the federal solar tax credit. In our article on solar incentives, you can read about the incentives you qualify for near you.
Environmental Impact of Switching to Solar in Walnut
An important reason so many are considering going solar is to help reduce their environmental impact.A question many people might be thinking about is how much can they really help preserve the environment by switching to solar power anyway? Switching to clean energy for electricity in place of relying on nonrenewable energy sources is a good way to reduce carbon dioxide emissions if you want to help reduce Walnut's fair level of greenhouse gas emissions.In Walnut, the average person can lower their carbon footprint by 50 pounds a year once they go solar. Since energy from the sun is renewable and produces electricity without CO2 emissions, installing solar panels is one easy step you can take to help preserve the planet.
EcoWatch's Walnut, CA Solar Company Rankings FAQs
Which solar company is the best near me?
In Walnut, SunGuide Solar Inc is the top local solar company. Our team of experts rates it 5.00 stars, so it's a good choice if you're planning on installing solar panels on your home.
What is the negative environmental impact of solar panel manufacturing?
Producing solar panels needs to use chemicals and produces toxic waste that can be harmful for the environment, which is the main drawback of solar panels.
Are solar panels worth it?
Solar panels need a large upfront investment that will cost you several thousands of dollars, but whether or not solar panels are worth it depends on a collection of factors like the cost of electricity near you and the amount of direct sunlight your roof gets.
When should I put up solar panels?
Although summer is the most popular time people install solar panels, the ideal time is actually winter. You can save money since there's not as much demand during the winter months, and it allows you to be up and running with solar for the more expensive power bills you may get during the summer.
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.