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TRUSTED BY DIAMOND BAR, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon50
    Verified solar panel services reviews

Top-Rated Solar panel pros in Diamond Bar - Updated Nov 2026

Avatar for Get Smarter Solar
Get Smarter Solar
4.8(
35
)
Solar Panels For Electric System - RepairSolar Panel InstallSolar Panels For Electric System - Install - For Business+1 more

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"Having Sunpower install our Solar panels has been a great experience. Arvin helped explain the system, process the paperwork, and made sure the installation and inspections were all done on time. Sunpower system has saved us alot in electrical costs. We are so happy with how this has turned out. Our system is actually performing 25% more efficiently than expected!! A big thanks to Arvin for all his help throughout this process."
Additional Photos
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Additional Photos

+18

Response time4 days
3 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for SunLux
SunLux
4.6(
72
)
Solar Panel Install

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"I am very pleased with SunLux. Everyone I spoke with was helpful and friendly. When problems arose, they were quickly resolved. Since the solar panels have been installed, everything is working well and is functional."
Home Solar Installation - Corona
Home Solar Installation - Corona 2
Home Solar Installation - Claremont 1
Home Solar Installation - Claremont 2
Moreno Valley Solar Install

+13

Response time2 days
Response rate92%
Recommended by96%of homeowners
Avatar for The Solar Panel Doctors
The Solar Panel Doctors
4.8(
65
)
Solar Panels For Electric System - RepairSolar Water Heater System - InstallSolar Water Heater System - Repair

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"I am so pleased with the worked performed by The Solar Panel Doctor. They did an amazing job. I highly recommend this company for your solar cleaning needs and bird proofing. The technicians were top notch and I am so impressed with their work ethics! I am looking forward to having them serve my solar panels for future cleanings and am please how they handled the bird abatement. Thank you so much!!"
Response time10 hrs
Response rate85%
1 neighbors recently requested a quote
Avatar for NRG Clean Power
NRG Clean Power
4.6(
52
)
Solar Panel Install

Serving Diamond Bar, CA and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Warranties offered

"We are so excited that NRG helped us to install Solar Panels on our house in San Francisco! Their entire team was wonderful from their first presentation providing us with all the information to the completion of the installation. Their installation staff was wonderful and completed the project without a hitch. Nicole Greenwood our customer service rep kept us informed of each step along the way and made everything easy. We had gotten estimates from two other companies and are glad we went with NRG. No worries and a wonderful experience. We will recommend NRG without reservation. Thanks to your whole team! Marge B."
Rooftop Solar
Solar Installation
Solar Panel Install
Home Solar Install
Solar System Install

+5

16 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for Power On Solar
Power On Solar
4.6(
5
)
Solar Panel Install

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2016

Free estimates

We specialize in all your home solar panel and battery installs. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our home solar offerings below and call -or- click to schedule a free estimate today.

Additional Photos
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+1

22 neighbors recently requested a quote
D & M Solar Solutions
5.0(
4
)
Solar Panel InstallSolar Panels For Electric System - Repair

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2023

Free estimates

Customers say: Quick response

"Hired D&M Solar Solutions for a Solar removal/Reinstallation and New roof got it done in 2 Days at a great price job was done about 6 months ago has rained many days and no more leaksâ ¦ Luis is a very responsible/Responsive person Kept me informed of the process â ¦Would recommend for any roofing and solar projects"
Response time1 day
9 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for OC Solar
OC Solar
4.8(
6
)
Solar Panel Install

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2001

Free estimates

Credit card accepted

"I brought to the attention the 1 panel that had a sagging corner, my comment was ignored. Just this month I received an e-mail asking if I could use any additional services to me, in response I asked about the sagging corner and an unrelated technical question. They addressed my question but not my sagging corner. This is the reason I did not give them all 5 stars."
Nellie Gail
Nellie Gail
Nellie Gail
Nellie Gail
Nellie Gail

+11

1 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for EVERYSUN INC
EVERYSUN INC
4.8(
6
)
Solar Panel Install

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

Everysun is a residential solar energy company focused on helping homeowners switch to clean, affordable, and reliable solar power. The company designs and installs solar panel and home battery systems that reduce electricity costs and increase energy independence. Serving homeowners in California, Everysun delivers high-quality installations, long-term warranties, and a customer-first experience by combining efficient engineering, transparent pricing, and dependable service from consultation to ongoing support.

Solar Installation
Roof Preparation
Work in Progress
Black Solar Panels
Completed Array

+1

4 neighbors recently requested a quote
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Solar Panels FAQs, answered by experts

There are a few qualifying questions you should ask a local solar panel company before hiring them:

  • Will you handle permits for the installation?

  • Does your total price include the equipment and labor?

  • How long do you expect the installation process to take?

  • What kind of workmanship warranty do you include with your installations?

  • Who should I contact if I have a problem with my system after installation?

  • Do you install the panels or outsource the work to third parties?

  • Will you file for solar incentives for me?

In most cases, installing solar panels will not void your roof warranty. To keep roof warranties intact, check your written warranty or call the manufacturer to ask about clauses regarding roof penetrations. You can also protect yourself by getting written approval or a modified warranty that specifically allows the solar installation type you’re planning. Then, hire a professional solar installer that follows roofing manufacturer instructions and protects the roof during installation.

The average cost to install solar panels is around $27,000, with most homeowners paying between $4,500 and $54,000. These prices don’t consider the federal investment tax credit (ITC), which can reduce costs by up to 30%. The final price depends on several factors, including the size of the system needed to offset your energy consumption, the amount of sunlight your home receives, your geographical location, the type and brand of panels, labor costs, and any add-on products like solar batteries or electric vehicle (EV) chargers. It is recommended to get price quotes from at least three solar companies in your area to find the best deal.

Solar batteries can be a great investment to help maximize your solar savings and make your system and home more valuable, but they’re most beneficial to customers who don’t have access to net metering. If your state or energy provider doesn’t provide net metering, batteries can be a great way to offset consumption even when your panels aren’t producing power. They also come with the added benefit of providing electricity through blackouts, so they’re valuable in areas prone to severe weather that could cause frequent blackouts. Your installer can help you decide if batteries are worthwhile.

The best way to know if your roof can support solar panels is to hire a structural engineer. They’ll look at your roof and approve the design of your solar panel system or suggest changes. The best roofing for solar panels is made from strong materials like asphalt shingles and metal, but tile and gravel will work. Softer materials like thatch or temporary structures are not a good fit.

The Diamond Bar, CA homeowners’ guide to solar panel services

From average costs to expert advice, get all the answers you need to get your job done.