1. Sun Supply PV

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Newbury Park, CA

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Sun Supply PV

4.2 (32 reviews)
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Extremely satisfied top to bottom with Tandem Solar. Every step of the way the staff at Tandem took care of our needs. Sean and Gregg are true experts in the Solar industry. Highly recommend and would use time and again.

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4 months ago

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6 years ago

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Greg S.

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10 years ago

Let's just say outstanding all around. Customer service was 5 star, knowledgeable and went beyond my expectations. Highly recommended.

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7 years ago

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11 years ago

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Greg S.

Thanks for the pictures, Mark. Looks Great!

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7 years ago

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Review Highlights - Sun Supply PV

“I bought from them when they were Tandem Solar, worked with maybe everyone one at the firm (Sean, Greg, Sarah).”

Mentioned in 15 reviews

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California Solar & Electric - Ensure uninterrupted energy during outages with our reliable solar backup power systems.

California Solar & Electric

(115 reviews)

Within an hour of posting my initial review regarding a delayed referral bonus, the owner…read morepersonally reached out, apologized for the administrative oversight, and sent the $500 immediately. I really appreciate the direct accountability and quick resolution. I'm leaving my original review below for transparency, but their prompt response today restored my confidence in their management. I originally had a positive experience with California Solar Electric during my 10.12 kW solar and Powerwall 3 installation last year. Unfortunately, their post-install customer support and business ethics are nonexistent. I referred a friend who completed their installation months ago. I was explicitly promised a $500 referral bonus for this. After months of waiting, I tried following up multiple times privately to give them a chance to make it right, but I am now being completely ignored. It's a shame because I have several neighbors here in Fountain Valley who are currently shopping around for solar and battery storage. I was planning to refer them here, but I cannot recommend a company that fails to honor its own written agreements and ducks communication. Buyer beware: the installation team does good work, but do not trust a word management says about referral incentives or post-sale promises. Still waiting for my $500.

California Solar and Electric. CS&E is simply the best. Call Mark Howe. Honest, reliable,…read moreprofessional, skilled and highly competitive. Best warranty and quality materials and labor. 949 637-9108. They are out of Santa Clarita. We are so happy and satisfied with our system and our bills have gone from $300 plus a month to less than $40 a month. Also when the power has gone out in our neighborhood the battery backup has saved the day. Stellar value, workmanship, professionalism and service plus a 25 year warranty. Highly recommended

Shelter Roofing and Solar - Call (805)-523-2461 for a free Estimate. We are licensed and bonded with a General, Roofing and Electrical License issued by the CSLB.

Shelter Roofing and Solar

(145 reviews)

Based on consistent good reviews, I contacted Shelter in August of 2025…read more We had experienced numerous electrical power outages for several years, so I began to investigate possible solutions. What I wanted ideally was a system that would automatically power our home in the event of a power failure. I initially looked at generator systems, but discovered several downsides to that technology. Generators need fuel, which could be be gasoline, diesel, or natural gas. Of these, natural gas was the most attractive, but that would require significant trenching for a new line around the house. In addition, placement of a generator was a problem, due to zoning requirements. Also, gasoline/diesel/natural gas generators have an internal combustion engine, which needs maintenance, like oil changes. The best solution for me was to have a battery backup system installed. This type of system is also known as a "power wall." Shelter recommended a 2-battery system made by FranklinWH (WH stands for Whole House). The batteries are 15 KWH each, for a total of 30 KWH. In our case, this is sufficient to power our home for 24 hours, even during the summer when we are using the central A/C. Other times of the year, 30 KWH would power everything for 48 hours or more. Since installation we have had several power failures, ranging from a few minutes to several hours. In all cases, the backup system kicked in so quickly that didn't even notice. We didn't even have to reset any clocks. When then grid power comes back online, the batteries recharge automatically. Shelter did a great job of understanding what we wanted, and provided an excellent solution. We had a very minor issue that we noticed several months later, and Shelter responded immediately to remedy the issue. I recommend Shelter Roofing and Solar without hesitation.

I am looking at about 10 different excellent solar companies for a solar panel and battery system…read more I was interested in getting the new prepaid ppa and actually receiving the 30% of the system by using a 5 year lease and buyout by paying the full amount either cash or with my own Heloc. Jason was the one that came out and he did a smaller system quote for me and my wife. Jason couldn't for the life of him tell me how the system was even more expensive than not using a prepaid ppa. I was also ignored by phone calls and "I'll get back to you" was what he told me. I would stay away and use some other company that is very clear about how the new incentives work.

KOTA Energy Group - These are the pics of our beautiful solar panels

KOTA Energy Group

(109 reviews)

My experience with Kota energy was excellent…read more I worked with Marco who was one of the first Solar reps who pitched to us. After going through quotes with several other sales people, we realized a lot of them were downright dishonest and trying to upsell us into buying a battery which we didn't need as we were still eligible for NEM 2.0 We felt Marco was super transparent and honest and even guaranteed us getting into NEM 2.0 as we were just a week and a half away from the deadline for submitting paperwork. Getting into 2.0 was important for us as the system wasn't really saving us much money if we had to buy a battery and Kota delivered on their promises. We were kept in the loop via our project manager about the status of our application regularly. The site survey and paperwork/permitting documents were submitted in time to SCE and once ultimately approved, we were given a time/date to schedule the install. The install crew showed up on time on the day and were done within ~5-6 hours and we finally had a fully operational system in about 2 weeks. Throughout the process Kota communicated in a timely manner and everyone was a pleasure to work with. I would highly recommend anyone to go with Kota and Marco for their solar needs

Poor customer service. Call center is overseas, poor follow up with issues…read more I've had a leak in my roof for over two weeks. Where are they now? Now where to be found. When you sign up to buy solar panels for $40k, they're right there with great customer service.

LA Solar Group

LA Solar Group

(1.1k reviews)

Sun Valley

The smartest thing I ever did was getting solar and power walls from LA Solar group…read moreThe put all my rebates in place and so I only paid the difference and did a complete house backup - so I was running my kiln (electric) and had the air conditioning on and the power went out First I did not know the power was out until my next door neighbor called me and asked how come I have lights on the power is out so I went to see if my kiln was affected and if processed without a hitch!! They are starting rolling blackouts and I just don't even worry about it!!! Meet and clean work and finished when they said!!!

Second Update: STAY FAR AWAY FROM THIS COMPANY! This review concerns my direct experience with the…read morecompany's handling of the matter, including unwanted private communication and responses I find highly accusatory, aggressive, retaliatory, harassing, threatening and hostile. Since LA Solar Group continues to publicly and falsely accuse me of making "completely unfounded" and "factually false" claims, I am posting the actual email I received for the public to see. At 4:01 a.m. on October 1, 2026, I received a ClickUp email stating: "Ara Petrosyan invited you to join LA Solar Group, LLC - Proposal for Upcoming Project on ClickUp." The invitation identified the workspace as "LA Solar Group, LLC - Proposal for Upcoming Project" and identified the inviter as Ara Petrosyan. Attached is a screenshot of the email I received it at an email address linked to my LinkedIn account. I have never claimed knowledge of who technically generated or transmitted the invitation behind the scenes. I have described what I actually received, what it said, and my experience afterward. Their repeated characterization of my documented experience as "false," "unfounded," and an intentional attempt to "sabotage" their business is highly telling of this company. Their public assertion that they know my subjective intent - despite having no basis to establish my state of mind - reflects a serious disregard for basic legal principles and may expose the company to serious legal consequences for publishing false statements about my motives as though they were established fact. In my opinion, this company's response to criticism has become EXTREMELY AGGRESSIVE and appears focused on discrediting and SILENCING me. I view the continued accusations and communications as increasingly HARASSING. I have contacted counsel, and I will preserve all communications. I am also prepared to contact appropriate authorities. Update: The company's response below speaks for itself. I find its tone defensive, unprofessional, and threatening. After I described my own experience in my first review, the company sent me an unwanted private message through Yelp asking me to remove my review. Then Yelp removed my review. Now that I wrote about my direct experience with them after receiving their private message through Yelp - It has now publicly characterized my statements as "unfounded claims,", and instructed me to "refrain" from making them. I view this pattern of conduct, including the unwanted private Yelp message and the language in the company's public response, as an attempt to pressure and intimidate me into silence. Both of my reviews describe my truthful experiences, observations, opinions, and impressions. My original review clearly stated that the recruiting email came from a third party referencing LA Solar Group and the CEO. I did not state that LA Solar Group itself sent that email. I have already asked LA Solar Group to cease contacting me. I do not consent to further communications regarding my reviews. I stand by my reviews and strongly suggest that the company have its counsel review their actual language before publicly and falsely accusing me of making "unfounded claims." I am preserving all communications and reserve all rights and remedies available to me. I also reserve the right to expand my review to other platforms, including my own blog, particularly in light of the company's accusatory and threatening response and its characterization of my statements in a manner I believe is completely false and misleading. Any further public discussion by me will remain based on my documented experiences, the company's own communications, and my opinions and impressions. As already stated in my response to your unwanted and unsolicited private message, as well as in my review, refrain from contacting me further, whether through private messages, public responses, or any other direct or indirect communication concerning my reviews. If this unwanted contact continues, I will immediately involve counsel, and pursue any other legal remedies available. Original Review: LA Solar Group sent me an unsolicited private message through Yelp asking me to remove my review after I shared my truthful experience regarding an unsolicited recruiting email I received at 4:01 a.m. Yelp then removed my first review on the stated basis that I was not a customer. I believe LA Solar Group contacted Yelp regarding that review. I consider the unsolicited private message through Yelp asking me to remove my review to be unwanted contact and an attempt to pressure me into removing criticism of the company based on my experience. This second review is due to the direct unwanted Yelp communication I personally received from the company. I have asked LA Solar Group to cease contact. I am preserving all communications and reserve the right to involve, appropriate authorities, and pursue any legal remedies available to me if further any unwanted contact occurs.

Sun Supply PV - solarinstallation - Updated October 2026

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