11 Best Solar Companies in Diamond Bar, CA (Mar 2023 Review)
We analyzed over 1500 solar companies in the nation,
and have selected the top 11 in Diamond Bar based on:
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Customer review scores
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Solar installers near you
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Company policies and services offered
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Accreditations and certifications
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Updated March 14, 2023
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Best solar companies in Diamond Bar
If you're a home or business owner looking to capitalize on the solar incentives in Diamond Bar, it can be a lot of work to narrow down which company to decide on. But, the process is worth it since adopting solar energy is often a good idea. Because solar panels generate their own electrical power, they can greatly bring down your electricity bill each month, if not completely eliminate it. In fact, you could look forward to about $25,000 of savings over 20 years.
In this article, we'll introduce you to the top Diamond Bar solar installers so you can find the best one for your home's sustainable energy needs. Read on to see our picks for the best solar companies in the city, or connect with a trusted solar company in your area right away by clicking the button below.
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 Technology
Tesla Energy
- 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 Rankings for Solar Companies in Diamond Bar

Renewable USA
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Educational sales approach
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More transparent pricing than competitors
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Excellent reputation
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Limited information available on website
Services Offered
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Solar Panels
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Solar Roof Shingles
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Commercial Solar Services

Solar Company Finder
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More transparent pricing than competitors
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Offers a free quote process
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Educational sales approach
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Can browse portfolio on website
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Assists with maximizing rebate
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Excellent reputation
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Limited information available on website
Services Offered
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Solar Panels
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Solar Roof Shingles
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Commercial Solar Services

Titanium Power
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Offers a free quote process
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Educational sales approach
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More transparent pricing than competitors
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Excellent reputation
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Limited information available on website
Services Offered
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Commercial Solar Services
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Solar Panels

Semper Solaris
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Offers a free quote process
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Educational sales approach
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More transparent pricing than competitors
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Excellent reputation
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Limited information available on website
Services Offered
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Solar Panels
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Solar Roof Shingles

Xero Solar
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Can browse portfolio on website
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Educational sales approach
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More transparent pricing than competitors
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Custom system designs
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Excellent reputation
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Limited information available on website
Services Offered
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Commercial Solar Services
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Solar Panels

For me Solar
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Offers a free quote process
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Educational sales approach
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More transparent pricing than competitors
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Comprehensive service offerings
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Excellent reputation
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Limited information available on website
Services Offered
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Maintenance and Repairs
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Commercial Solar Services
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Solar Batteries
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Solar Panels
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Solar Roof Shingles

Buel Solar
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Can browse portfolio on website
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Educational sales approach
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Excellent reputation
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Limited information available on website
Services Offered
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Maintenance and Repairs
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Commercial Solar Services
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Solar Panels

Resonance Solar Installation
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More transparent pricing than competitors
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Educational sales approach
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Custom system designs
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Can browse portfolio on website
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NABCEP-certified technicians
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Assists with maximizing rebate
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Comprehensive service offerings
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Excellent reputation
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Limited information available on website
Services Offered
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Maintenance and Repairs
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Roofing Services
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Commercial Solar Services
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Solar Batteries
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Solar Roof Shingles
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Solar Panels

📱 Free Quote | Ivyleague Solar Installation - Maywood
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Educational sales approach
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Assists with maximizing rebate
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Custom system designs
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More transparent pricing than competitors
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Comprehensive service offerings
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Excellent reputation
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Limited information available on website
Services Offered
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Maintenance and Repairs
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Roofing Services
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Commercial Solar Services
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Solar Batteries
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Solar Roof Shingles
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Solar Panels

♻ Long Beach Solar ♻
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Educational sales approach
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Locally owned and operated
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More transparent pricing than competitors
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Excellent reputation
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Limited information available on website
Services Offered
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Maintenance and Repairs
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Commercial Solar Services
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Solar Batteries
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Solar Roof Shingles
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Solar Panels

Solar Source, Inc.
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Offers a free quote process
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Educational sales approach
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Has an online quote form
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Family owned and operated
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Excellent reputation
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Some reported issues with customer services
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Some reported communication issues
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Some reports of high-pressure sales tactics
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Some reports of long wait times for installation
Services Offered
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Solar Batteries
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Solar Panels
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Commercial Solar Services
Solar Company Ranking Methodology
Click here to see a more detailed overview of our solar company ranking methodology.
The Cost and Benefits of Solar in Diamond Bar
For many readers, the decision of which solar company to hire comes down to costs. There are a few factors you should consider when determining costs and your potential savings, including:
- The type of solar panels you want to get: More efficient models cost more, so that will determine your budget for your solar project.
- The amount of sunlight your city gets: Due to Diamond Bar's very high amount of average daily sunlight, you should be able to save a lot on your electric bills.
- Incentives: One thing that can save you money on 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 on your power bills, which can give you an average of $25,000 of savings over 20 years.
- How much energy your home consumes: Homes that consume a lot of electricity each month may call for more solar panels and, as a result, more upfront cost, but will also enjoy more savings over time.
Although a solar panel system costs a decent chunk of money upfront, it can save you thousands of dollars over time. The question of how much, though, depends on a number of factors, like the size of your house and your energy consumption.
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Solar Incentives in Diamond Bar
Adopting solar power has many considerable benefits. Not only can it help protect the planet, but you can also save a decent amount of money on your installation with various government incentives. Local solar incentive programs depend on the location and, sometimes, utility company. A lot of states offer rebates for solar power systems, in addition to the federal solar tax credit. Our article on solar incentives has more information on the incentives you can take advantage of in Diamond Bar.
Environmental Impact of Switching to Solar in Diamond Bar
Going solar can have a beneficial impact on the environment. But you may be wondering — how much exactly can you help the planet by using solar power? In a place like Diamond Bar where commute times can be very long, using solar power can help help reduce the carbon footprint of driving. While solar panel manufacturing releases carbon dioxide emissions, the panels make up for it by considerably decreasing the amount of CO2 you would have produced if you still used traditional energy. In Diamond Bar, you can reduce your carbon footprint by 50 pounds a year with solar panels. The good things about solar power are plentiful — just like solar power is! That's why so many people have been happy with making the switch to solar.
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 Technology
Tesla Energy
- 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 Diamond Bar, CA Solar Company Rankings FAQs
What is the best solar panel company in Diamond Bar?
The best local solar company in Diamond Bar is Renewable USA, with a rating of 5.00 stars.
Are solar panels actually environmentally friendly?
Solar panels can be harmful for the environment when manufacturers use toxic chemicals in the manufacturing process. Chemicals can make solar panels difficult to dispose of safely once they've reached the end of their lifespan. Making solar panels uses a lot of energy as well. The energy payback period is about 1 to 4 years.
Are solar panels worth it?
Solar panels call for a significant upfront investment that costs over ten thousand dollars, but whether or not solar panels are worth it depends on a variety of factors like the cost of electricity near you and how much direct sunlight your roof gets.
What is the efficiency of solar panels?
For the most part, solar panels are about 15 to 25% efficient, which means they can convert that percentage of the energy from the sun into usable electricity.
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.