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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."
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+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

"Extremely Happy!! I live in Northern CA. I obtained 4 bids from local solar installers and 7 from the EnergySage website. I had done extensive research regarding the ratings for solar panels, inverters, monitoring, etc. SunLux was the first to respond from EnergySage. Their bid was an unbelievably low price for the top of the line Panasonic 320 solar panels, Optimizer inverter and SolarEdge monitoring system. The price was 2/3 ($11K less) than what I had been quoted from 3 of the local companies. When those 3 companies contacted me to see if I wanted to sign a contract with them, they asked why my answer was no. When I told them the price and equipment included, they each said something was wrong and I wasnâ t getting what SunLux quotedâ ¦ it wasnâ t possible. SunLux also beat every other company from the EnergySage website. Because the price was so good, I increased the amount of panels I purchased from 25 to 27. I researched SunLuxâ s reviews and stability and felt comfortable to proceed. They traveled a very long way to install my system; Iâ m the furthest north they have ever been. The crew was great. All were very hard workers and got the job done. I just went online with my energy company towards the end of May 2019. Each of my June and July 2019 energy bills were only $23, which is mostly for the natural gas for the hot water heater. My heating/air is all electric. I am producing more than I using at this time. June and July of 2018 bills were $253 and $435 respectively, including the natural gas. My winter energy bills are very high also. I canâ t wait to see what the net result will be after a year."
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 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.

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+1

23 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
10 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

5 neighbors recently requested a quote
Avatar for Avatar Solar, Inc.
Avatar Solar, Inc.
5.0(
3
)
Solar Panels For Electric System - RepairSolar Panels For Electric System - Repair - For Business

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"He was so helpful on the phone to help diagnose the problem before the technician could come out. They helped me get replacement equipment that was still under warranty. I would definitely recommend them."
Rodeway Inn
Response time2 days
2 neighbors recently requested a quote
Recommended by100%of homeowners
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Solar Panels FAQs, answered by experts
  • Installing a new electrical meter box

  • Replacing your meter base

  • Replacing your service entrance cable 

The cost to install or upgrade an electrical meter box ranges from $100 to $650, including $50 to $250 for the unit. The meter base passes the power from your electric company to your panel. The cost to replace a meter base is roughly $50 to $250. 

Service entrance cables are electrical cables with multiple wires, bringing power from electrical companies to residential buildings. The cost to replace a service entrance cable ranges roughly from $1,000 to $1,500.

Yes, you have to get on the roof to cut a hole for solar tubing. It's not possible to complete the job from inside your house by simply cutting through the ceiling. So if you want to go the DIY route, remember to use safe ladder practices. If you’re not comfortable climbing on your roof to install solar tubes, hire a pro who has the tools and expertise to do the job safely.

Removing solar panels can be straightforward, but it’s not necessarily a simple process. Your contractor needs to prevent damage—not only to your panels but also to your roof and electrical system. Many systems are wired into the main electrical grid, and you’ll need to hire a licensed electrician to disconnect it.

A few disadvantages of installing solar panels on your roof include the high up-front costs and the potential for increased property taxes. Installing solar panels can increase the home’s value, which in turn can mean higher taxes. Depending on your area, you should check with your local tax offices for more information. Another potential pitfall is roof leaks from a poor installation, but this shouldn’t be an issue if you hire a reputable company.

As long as your solar panels are properly installed without damage to your roof, they will not shorten the roof’s life span. Solar panels can act as a cover or barrier to your roof and help block external elements, such as debris, heat, and UV rays. Reduced exposure to the weather can extend your roof’s life.

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.