15 Best Solar Companies in Diamond Bar, CA (2024 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Diamond Bar based on:
Customer review scores- Service area for Diamond Bar, CA
- Company policies and services offered
- Accreditations and certifications
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Average Diamond Bar homeowner saves $2,108/year with solar panels
Why you can trust EcoWatch
Best Solar Companies in Diamond Bar
When choosing between the best solar companies, Diamond Bar homeowners have more options than ever before, which can be a lot to consider, but we’re here to make adopting solar energy easier. It’s no surprise that Diamond Bar, somewhere with lots of sunlight, has tons of solar growth, so a lot of the best solar companies in the country have opened up there to help residents embrace renewable energy.
Here, we’ll give you a list of some of the top solar companies in Diamond Bar to make your decision a bit easier.To get an estimate of how much it could cost to install solar panels on your roof, you can click the button below to be connected to a certified installer near you.
Best National Provider
SunPower
- Most efficient panels on the market
- National coverage
- Cradle to Cradle sustainability certification
- Great warranty coverage
- Expensive
- Customer service varies by local dealer
Best Regional Coverage
Momentum Solar
- Great warranty coverage
- Representatives are experts on local policies
- Concierge service ensures steady communication
- Slightly limited service offerings
Best for Leasing
Sunrun
- Expansive service area
- Many financing options
- Some reported issues with customer service
- Some reported issues with door-to-door sales
EcoWatch Rankings for Solar Companies in Diamond Bar
SunPower by True Power Solar
Clear Pricing Policy- Free Quotes
- Informative Resources
- Reliable Customer Support
Limited information available on website
Services Offered
Cleaning and Maintenance- Panel Installation
SunPower by Sun Solar-OC
- Clear Pricing Policy
- Informative Resources
- Reliable Customer Support
- Limited information available on website
Services Offered
- Panel Installation
- Battery Storage
- Cleaning and Maintenance
- Consultation
SunPower by Sea Bright Solar
- Clear Pricing Policy
- Informative Resources
- Free Quotes
- Reliable Customer Support
- Prompt Service Delivery
- Limited information available on website
Services Offered
- Financing Assistance
- Battery Storage
- Panel Installation
- Consultation
SunGuide Solar Inc
- Clear Pricing Policy
- Reliable Customer Support
- Informative Resources
- Free Quotes
- Limited information available on website
Services Offered
- Panel Installation
- Consultation
Simple Solar
- Informative Resources
- Free Quotes
- Reliable Customer Support
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Panel Installation
- Permit Assistance
- Cleaning and Maintenance
- Financing Assistance
- Grid-Tied Solar System
- Battery Storage
- Consultation
Clean Energy Solutions
- Informative Resources
- Reliable Customer Support
- Clear Pricing Policy
- Free Quotes
- Limited information available on website
Services Offered
- Panel Installation
- Permit Assistance
- Consultation
TENCO SOLAR
- Informative Resources
- Free Quotes
- Clear Pricing Policy
- Reliable Customer Support
- Limited information available on website
Services Offered
- System Decommissioning
- Consultation
- Cleaning and Maintenance
- Panel Installation
- Skilled Repairs
- Battery Storage
- Solar Carports
- Permit Assistance
- Financing Assistance
SolarRepair
- Prompt Service Delivery
- Informative Resources
- Free Quotes
- Reliable Customer Support
- Limited information available on website
Services Offered
- Battery Storage
- Solar Panel Upgrades
- Cleaning and Maintenance
- Financing Assistance
- Skilled Repairs
- Panel Installation
West Covina Solar
- Reliable Customer Support
- Prompt Service Delivery
- Informative Resources
- Clear Pricing Policy
- Free Quotes
- Limited information available on website
Services Offered
- Consultation
- Permit Assistance
- Panel Installation
Titanium Solar
- Clear Pricing Policy
- Reliable Customer Support
- Free Quotes
- Informative Resources
- Limited information available on website
Services Offered
- Panel Installation
SolarMax Technology
- Clear Pricing Policy
- Informative Resources
- Free Quotes
- Reliable Customer Support
- Limited information available on website
Services Offered
- Permit Assistance
- Financing Assistance
- Panel Installation
- Battery Storage
- Consultation
Nexus Energy Systems
- Informative Resources
- Clear Pricing Policy
- Reliable Customer Support
- Limited information available on website
Services Offered
- Tesla Powerwall
- Battery Storage
- Skilled Repairs
- Cleaning and Maintenance
- Panel Installation
Source Solar, Inc.
- Clear Pricing Policy
- Free Quotes
- Reliable Customer Support
- Informative Resources
- Family-Operated Business
- Limited information available on website
Services Offered
- Solar Carports
- Consultation
- Financing Assistance
- Panel Installation
Infinity Solar
- Clear Pricing Policy
- Reliable Customer Support
- Free Quotes
- Informative Resources
- Limited information available on website
Services Offered
- Consultation
- Tesla Powerwall
- Financing Assistance
- Battery Storage
- Panel Installation
- Permit Assistance
Go Green Solar
- Informative Resources
- Free Quotes
- Reliable Customer Support
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Consultation
- Financing Assistance
- Grid-Tied Solar System
- Panel Installation
- Off-Grid Solar Systems
- Cleaning and Maintenance
- Battery Storage
- Permit Assistance
Methodology: How We Ranked the Best Solar Companies in Diamond Bar
EcoWatch's solar experts analyzed each solar company in Diamond Bar 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 Diamond Bar
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 Diamond Bar
The cost of putting up a solar panel system has decreased greatly over the past several years, but it’s still a large investment for most homeowners.A few main factors that determine the cost of installing a solar panel system on your home and how much money you could save over time are:
- The type and model of solar panels you’re planning on getting: More efficient panels are more costly, so that will affect your budget for your solar project.
- Incentives: Tax-paying citizens who buy and install a solar system this year can save 0 of their overall solar costs by using the federal solar investment tax credit. You can also save about $25,000 on your energy bills over 20 years not including incentives.
- The amount of sunlight your home gets: Because of Diamond Bar’s very high amount of average daily sunlight, you should be able to save a lot on your electricity bills.
- Electricity consumption: The average household in Diamond Bar doesn’t use much energy, and therefore may not see as many savings on their power bills.
Due to the cost of solar panels being lower than before as well as various solar incentives, they are a sound investment for many homeowners.
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Solar Incentives in Diamond Bar
If you’re considering making the switch to solar power, various government incentives and solar rebates can immensely reduce the cost of the project and speed up the return on your investment.On top of the federal tax credit incentive, there are also some state- and city-level incentives, which in the majority of cases, stack with the federal incentive, so you get to save even more. Take a look at our article on solar incentives to see what incentives you can benefit from.
Environmental Impact of Switching to Solar in Diamond Bar
Lots of people want to do what they can to help the environment, which for many is the primary reason for installing a solar system.But how much can installing solar panels actually affect the environment? One thing to consider is your overall carbon footprint. For example, if you spend a lot of time in the car and have an electric vehicle, you can use solar energy for your home to power your EV and therefore help offset your carbon emissions.Because solar panels don’t release greenhouse gas emissions into the atmosphere when producing electricity, they’re a good trade for traditional energy sources. In fact, you could look forward to lowering your carbon dioxide emissions by about 50 pounds each year. Since solar energy is abundant and produces electricity without a carbon footprint, adding solar panels to your home is one easy step you can take to help the planet.
Best National Provider
SunPower
- Most efficient panels on the market
- National coverage
- Cradle to Cradle sustainability certification
- Great warranty coverage
- Expensive
- Customer service varies by local dealer
Best Regional Coverage
Momentum Solar
- Great warranty coverage
- Representatives are experts on local policies
- Concierge service ensures steady communication
- Slightly limited service offerings
Best for Leasing
Sunrun
- Expansive service area
- Many financing options
- Some reported issues with customer service
- Some reported issues with door-to-door sales
EcoWatch's Diamond Bar, CA Solar Company Rankings FAQs
What is the best solar installation company in Diamond Bar?
The highest-rated local solar company in Diamond Bar is SunPower by True Power Solar, with a rating of 3.00 stars.
Are solar panels actually eco-friendly?
Solar panels can be detrimental for the environment when manufacturers use toxic chemicals in the construction. Chemicals can make solar panels difficult to recycle safely once they’ve reached the end of their lifespan. Solar panel manufacturing uses a lot of energy as well. The energy payback period is about 1 to 4 years.
How long does it take to see a return on your investment after buying solar panels?
The average payback period for solar panel installation is about 9.2 years, but the exact period is influenced by the cost of electricity where you are, incentives and net metering programs.
When should I install solar panels?
You can install solar panels whenever it's convenient for you, but consider doing so in the winter when the demand is less. With fewer homeowners contracting installers, you could potentially see faster installation times and more savings.
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.