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Diamond Solar Inc.

Diamond Solar will design, build and install your solar system in under 60 days. You will have a dedicated project manager who will escort you into being a clean energy home, with you every step of the way!

Our team has over 25 years of combined solar experience and we pride ourselves on being a company devoted to client satisfaction.

-Highly rated on Google, Yelp & Angi's List
-Family Owned & Operated
-A+ Rating by the Better Business Bureau
-5 Star Rated Company on
-Premier Mission Solar Installer
-Licensed SolarEdge Installer
-LG Gold Installer
-REC Authorized Installer
-PRICE MATCH GUARANTEE-- We'll beat or match the solar
system price on ANY competitor quote.
-30-YEAR WARRANTY on Panels, Inverters, Workmanship, Roof,
Racking and Performance Guarantee
-Low APR Finance Options at just .99% for a 20 year loan
-Cash Discounts on all Solar Systems
-In house Roofing Company
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Diamond Solar will have an Energy Advisor give you a no obligation virtual or in-home consultation. We will show you how you can reduce your electric bills for the rest of your life, own your energy, store it and save thousands of dollars a year. We will also show how to prevent utility rate hikes and with our zero money down and zero upfront cost financing options you will experience the savings from day one. We have low .99% APR finance programs and can get your solar array installed in under 60 days.
Year Established
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Advanced installers are among the top half of companies on the Marketplace for responsiveness, reputation, results.

We speak

English; Spanish

Services Offered

  • Installation
  • Financing
  • Manufacturing
  • Construction
  • Roofing
  • Solar Repair & Maintenance

Workmanship Warranty

30 Years


B-General CSLB #1048705


General Liability, Worker's Comp

Industry Certifications

  • Better Business Bureau

Manufacturer Certifications

  • Sungage Financial Certified Partner

What Customers Are Saying

39 reviews
Average Rating 39 review(s)
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Be prepared to manage your own project

We first started working with Diamond Solar in July 2022, panels were on the roof in early October 2022, but it is now March 2023 and we have yet to enjoy the benefits of having solar. The good: their sales and install team were great, answered all of our questions, responded quickly, and helped us pick the right solar package for our needs. The bad: as soon as we scheduled the installation for the panels, we had to initiate every communication with Diamond Solar and solve every problem ourselves. They did not tell us when the inspection was scheduled (it was at 7am) nor did they tell us that we had failed or why we failed until we called a few days later. There were a few issues - mostly minor items that could have been resolved easily (such as a missing placard on one of the new electrical component boxes) and a one medium problem that was an existing issue with our property (not Diamond Solar's fault, but frustrating that they didn't call it out when they surveyed the site to file the permit). Unfortunately, they only acted to resolve one problem at a time and we failed inspection two more times before I demanded a copy of the failed inspection report. It was now December (2 months after install) and the first time we learned of the existing property issue that would take a month to fix due to the holiday season and poor weather at the time. We resolved it and called Diamond Solar to schedule reinspection, where we got passed around internally for a week before someone told us we'd have to wait another 2 weeks because they failed to order another missing placard. FINALLY, in mid-February 2022 (4 months after install) we passed inspection. The Diamond Solar representative told us the paperwork was filed with the city and that everything was turned on. Unfortunately, that was not the end. Our electric bill arrived a few weeks later with no indication of solar anywhere. I called, and the utility company had no idea we were even thinking of installing solar, let alone that we had completed the entire process. I'm now working with them to get everything in order ahead of the quickly approaching NEM 3.0 deadline and hoping nothing else has to be fixed.

Posted by ffupyelgihc on Mar 06, 2023
Wow! This company is really good

Superior in every aspect. Knowledgeable. Prompt installation. Excellent response and service. Sean, project manager, is fantastic!!

Posted by misterkv on Feb 07, 2023
Excellent service getting my solar installed and runnung

Sean and Tiffany are amazing. They hot me done is less than 30 days, the team working the roof had some issues and Tiffany quickly pivoted and explained how they needed to change to deck mounting. Very few issues with Sean and Tiffany on point. I highly recommend Diamond Solar! Love the relationship with the team.

Posted by trine-07.gadget on Aug 31, 2022
Terrible Experience Adding on to an Existing System

I hired Diamond Solar to add on 15 panels to an existing 26 panel installation that was done by LA Solar Group. Contract was signed in August. Installation started in October and was not completed until January. There were at least 5 different times I was told someone would be at my house to work on it and no one showed up. I lost months of production on my existing panels during this time. I asked them to clean my panels to make up for the lost production, they said they would and it was never done. With LA Solar I had visibility to production on the Solaredge monitoring web site and app. Diamond did not set it up. I just got my first electric bill and my production was only up 5% year over year. Now I have to figure out how to deal with this. I don't understand why I was treated this badly as a customer. I paid cash for everything on time. I accepted their initial proposal price and didn't negotiate them down. They had my email address and cell number to text if there was trouble getting a hold of me.

Posted by jkanownik on Apr 04, 2020
Awesome service

I am one who shops around and received around 20+ quotes. Diamond Solar beat them all and received awesome customer service. Leo from Diamond Solar helped me through the whole process and made it very easy. I would 100% recommend Diamond Solar to any one looking into purchasing Solar.

Posted by crawfordmike on May 11, 2019
Very impressed!

Very impressed with Nikko and the company. They came up with strategic ideas for placement and ground mount options. Their customer service is also top notch!

Posted by locnguyen on Apr 24, 2019



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