SunPower By Precis
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SunPower By Precis
SunPower by Precis is the leading solar energy company in the Riverside County including Temecula, San Diego, Orange, Los Angeles, San Bernardino and surrounding areas. Since 1979, we've completed thousands of solar installations for residential, commercial and industrial customers. With our turn-key process, we design and install your solar panel system including handling all the permits and rebates.

Fewer worries for you! Now, it's time to calculate the perfect system size for your house and find out how much you can save when you go solar. Business owners have a variety of options to finance their systems. The most common are cash, loan, lease or a solar power purchase agreement (PPA) but can vary by state.
Services
At Precis Solar, it has been our mission to provide comprehensive solar system consultations, designs, engineering, and installations for residential and commercial projects throughout Southern California. With over 40 years of experience using the very best in technology, we've become known as the most trusted solar provider in Southern California.
Reviews (18)
Jim P.
Jim P.
Jan 22, 2022
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They called me to make an appointment. They didn't show up. They did not call. No warning, no excuse, no explanation. The appointment was at noon so I wasted half my day waiting for them.
James Solek
James Solek
Dec 27, 2021
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HIGHLY HIGHLY RECOMMEND! After getting quotes from 7 different companies, I couldn’t be happier with my solar project completed by SunPower by Precis. Not only did they beat all other quotes, they destroyed them! I did extensive research on the different panels, inverters, gateways, batteries, etc. For my home, I went with 28 LG 390 Watt Neon R panels, Enphase IQ7A micro inverters, Enphase IQ Envoy and 2 Tesla Powerwall batteries. Roughly an 11kW Solar System. Working with Patricio Rodriguez as my sales rep was a true pleasure. He listened to my needs and answered all of my questions at all times
Marissa Crane
Marissa Crane
Nov 30, 2021
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This is the WORST company on the planet.
Not only did it take A YEAR, yes a YEAR process of permits, then lack of communication and having to do permits 3 separate times, then a year later finally getting an install date, to all of a sudden not having the solar panels we selected. To THEN NOT SHOWING UP ON INSTALL DAY.
We selected other panels and (after a year waiting) then they told us we have to pay an extra $150 EACH PANEL.
Not only did we have to call 2 different people multiple times to get them to call us back, but then proceeded to tell us that we had to get ANOTHER PERMIT for the new
Thomas H.
Thomas H.
Aug 18, 2021
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Kristin and the Precis team delivered on time, a great product (so far as I can tell a year into the installation), and my family is saving a ton of money each month due to having Solar installed. I'd surely recommend SunPower to others.
Moriah Carver
Moriah Carver
Jul 23, 2021
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Run don't walk away from this company!!!! I am beyond livid with the lack of customer service I have received. We have a new build and we were FORCED to go with this company and they are awful. They didn't have a representative call me they sent over a PowerPoint and said pick one lease or buy. When you try to email to ask questions nobody responds and when you call they take forever to return the phone call and are closed by the time I get off work. I've been go I ng back and forth with them for 3 days now trying to figure out why our solar is still not on. We've been in our house sine JUNE and
Mathew Kimbrell
Mathew Kimbrell
Apr 30, 2021
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I did a massive amount of research on solar panel technology, inverter technology, average cost per watt, our home power consumption, and comparing price vs system efficiency. After the research we decided that REC 370 solar panels with Enphase iQ7+ micro inverters was the right mix of cost vs performance and technology. We paid about 2.7 dollars per watt for Sunpower by Precis to install our entire system. If that was the end of the story that would be good. However, from the sales person Kathy to the engineering team to the production team to the installation team then the final check out with
Marie S.
Marie S.
Mar 22, 2021
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If you have a choice DO NOT use this company. I purchased a new home with KB and was forced to either purchase or lease solar panels with Sunpower. This is our first year and apparently the solar panels weren't working and we recieved a HUGE bill from electric company!! NOT EVEN A YEAR AND NOT WORKING. Worse part is no one contacted us about panels not working, but when we called customer service I was told they knew they weren't working and had already fixed the problem. OK if thats the case, why didn't anyone contact us and let us know or begin the credit for the months the panels
Cheryl N.
Cheryl N.
Mar 06, 2021
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From the first call for info to the last inspection and after Kathy Courtney and the crew of SunPower have been there answering all my question and advising me of each procedure along the way. This is the most professional company I have ever done business with.
Robert Z.
Robert Z.
Jan 27, 2021
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Super excited to get solar... so far it's been a smooth process... working with Tim Marquez has been so easy... he makes everything very clear... I also enjoyed being able to do everything over Zoom, which during these times is a great relief to have that option... I have referred several people so far... I am glad I am a being environmentally friendly and saving some money in the long run... hope to give an update again with more great things to say!
Christina L.
Christina L.
Jan 22, 2021
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Loved working with Tim Marquez! He was so helpful, courteous and very knowledgeable! I had a ton of questions and he answered every single one! Thank you!!!
Felix A.
Felix A.
Jan 20, 2021
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Tim Marquez is by far the epitome of what we call family. He helped me get solar panels a few years ago and since he has served my aunt, my uncle, my neighbor and my neighbor. He's not a sales man, he is a guy trying to help others get good panels. Can't go wrong with Tim and Sunpower by Precis. Top notch customer service and no call ever goes unanswered. Even when we did a refi and needed loan paperwork filled, Tim got it done for me ASAP. Don't look anywhere else.
Bunny L.
Bunny L.
Jan 20, 2021
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Tim Marquez was the best.
He explained everything very clearly
All the time he spent answering my
Questions I knew I had the right company..
You won't be sorry.
Thanks again

Dan
Jackie Johansen
Jackie Johansen
Nov 17, 2020
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Precis was an excellent company to work with. Our panels have been up for 5 years now and they are still going strong. For solar owners that see a decrease in power, I would highly recommend cleaning your panels at least a few times per year. Our family has noticed our output increase after each cleaning.
Austin M.
Austin M.
Jul 02, 2020
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**DO NOT USE Sunpower by Precis aka PRECIS SOLAR**

20 of my 25 solar panels failed within the first 2 years. 80% failure rate. There was a fire sparked from their junction box on top of my roof. I was told from Precis that it was due to moisture buildup in their waterproof box which they had drilled a hole in for the moisture to drain. The only reason I knew the solar panels failed was due to a bill at the end of the period roll up from Southern California Edison for $2,341.98. Not expecting that bill as the previous year I had a positive amount and received ~$100 from SCE.

I contacted Precis
Oscar Sanchez
Oscar Sanchez
Jan 19, 2019
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I finally listened to my wife to get the solar installed in our home. All my neighbors have them and I was the only one in the block that did not have them yet. I was referred to different companies but I did my own research and I was able to go with SunPower by Precis. I loved their customer service and was able to get an appointment when i was available. My salesman Oscar Espinoza arrived on time and explained everything to my how it worked and what products was recommended. We were able to make a deal and with in few month I was up and running. They also upgraded my electrical panel and now
Aaron Moesser
Aaron Moesser
Aug 09, 2018
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We had a great experience with SunPower by Precis. We have been up and running for about 2 years and I wanted to stop by and give a great review for the company. My wife is what you would call "a hard sell" and she asked lots of questions. Each question was answered and we felt comfortable moving forward. After installation, I was concerned about the output and they were able to come over and find that something had become disconnected, they fixed it, and we were up and running better than they projected. We've been happy since and I figure it will keep going as smoothly as it has thus far. Thanks
Andi Olivas
Andi Olivas
May 31, 2018
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We interviewed several solar companies, who offered different programs, and decided that SunPower by Precise had the best options to fit our budget and solar needs. In our instance we needed to upgrade our electrical panel and had been told by other companies that this would be costly. After speaking at length of Kathy, we were provided with a contractor who came out and gave us a very reasonable offer for upgrading our panel to accommodate not only the solar panels, but our future needs. Every appointment they set was kept and confirmed a day or two before and surprisingly, the contractor was
Matt Lewis
Matt Lewis
Jan 10, 2018
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Our salesman, Devin was polite and informative. But our house wasn't sized properly. We purchased the solar, took out a loan. Our house now costs more to operate per year than it ever did. We spoke to the office, they audited it and said it was fine and that WE were using more. When actually, after we purchased solar and it was installed, I changed every bulb to LED, and installed a smart/energy star thermostat. I clean my panels regularly. They mentioned my trees being tall, well they've been there before the solar so wouldn't you think they'd adjust the amount of panels accordingly? And finally