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Everything you need to know about SunPower solar panels and batteries in 2023

Updated: August 7, 2023

Our expert review

SolarReviews Expert Rating Score:
Our scoring methodology rates solar manufacturing companies on technical factors that are unlikely to be considered in customer reviews, offering consumers valuable insight into the actual quality of a solar brand.

Elite

SunPower has for some time been the leading brand of solar panels in terms of efficiency and electrical specifications.

Originally, the solar panels were made in America but over recent years cost cutting measures moved production to Mexico and Malaysia. The secret of SunPower has always been that they held patents over their “Interdigitated Back Contact" solar cells, known as IBC solar cells. IBC cells are the currently most efficient solar cells in mainstream production.

In 2020, SunPower as we knew it split into two separate listed entities, SunPower and Maxeon Solar Technologies. From now on, Maxeon will make the solar panels, and SunPower will run a retail dealer network selling integrated solar and energy storage solutions. However, the demerger has raised more questions than it has answered. Who actually owns the cell technology now? And will SunPower now start selling panels made by other manufacturers to reduce the cost of their systems?

The official reason given for the demerger is to allow each company to follow their strengths, but a skeptic may say that the real reason is that the manufacturing side of the business is unprofitable and is facing rising competition for other Tier 1 solar manufacturing companies that are now making solar panels very close in efficiency to the Maxeon/SunPower panels, all while using cheaper cell technologies. In short, it appears that the Maxeon spin-off is really about getting out of the manufacturing business before it lost its remaining competitive advantage, i.e. its leadership in cell efficiency.

Our concern now as a reviewer of the SunPower and Maxeon brand is that the contractual relationships between Maxeon and SunPower are not clear and Maxeon, as a standalone public company, is losing money. This factor has caused us to downgrade the overall brand "bankability" of SunPower and Maxeon. Their panels are still excellent (although now only marginally better than many other Tier 1 brands) but we don't know what happens if the Maxeon entity goes broke and we’re not sure if the 25 year warranty is being backed by Maxeon or SunPower.

SunPower consumer reviews

Verified profile

Manufacturer since 1985

solar panels
batteries
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Country of manufacturer
US flag FR flag MX flag MY flag

Latest good review thumbs up

Dinesh Mangalick | Atherton, CA | 07/19/2023

Excellent Support and follow thru

Excellent Support and follow thru. Sincere, caring, committed to customer satisfaction

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1 comment >
Reply from Dinesh Mangalick: We appreciate you sharing your SunPower experience. It's exciting to have you as part of the SunPower family, and it's such a joy to see your satisfaction with your transition to solar. Please reach out to us if there is anything we can assist you with in the future. Thank you for helping us change the way our world is powered!

Latest bad review thumbs down

Rosie | Buckeye, AZ | 08/07/2023

Horrible Customer Service

After 3 years my solar panels stopped working. I called SunPower for service since my solar panels are still under warranty for 20 years. They scheduled a technician to come so I was absent at work waiting for the technician that didn't even call to cancel neither showed up. This happened to me twice. Meantime, for 5 months I continued to pay the monthly bill to Mosaic the financing company. John Cerda, Sunpower Rep. promised that the company will pay back the non-service difference. However, up to this date Sunpower have not serviced my solar panels and they stopped answering my phone calls and emails. This is breach of service warranty. Mosaic destroyed my good credit by reporting to the 3 credit bureaus that I defaulted my payments. I do not recommend Sunpower for your solar panels.

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1 comment >
Reply from Rosie: Rosie, we apologize for any inconvenience and understand your frustration. We see your system is now fixed and have opened a new case on your behalf and submitted it for further investigation and follow-up with our Escalations Specialist Team. We appreciate you bringing this to our attention and look forward to talking to you soon.

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Robotham | Denver, CO | 07/19/2023

From set up to use

I have had a wonderful experience with our SunPower solar units from the very beginning. We have limited income and this has made our Public Service bill not just manageable but easily covered. We have had our collectors for over a year. No issues to complain about.

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1 comment >
Reply from SunPower: Thank you for sharing your SunPower experience. We strive to give our customers the best-in-class service and products. Please feel free to contact us if there is anything we can assist with in the future. Our team is always ready to help. Thank you for helping us change the way our world is powered!

T Vyas | Allentown, PA | 07/19/2023

Best quality products

So far so good. Hoping to be the same for next 24 years.

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1 comment >
Reply from SunPower: It is always a pleasure seeing clients happy and confident with their results in choosing SunPower. Thank you for helping us change the way our world is powered!

Orsete Dias | east meadow, NY | 07/11/2023

Exceptional and Professional business enterprise

My experience with SunPower has been nothing short of excellent. From the initial consultation to the seamless installation and ongoing support, their professionalism, expertise, and commitment to customer satisfaction have exceeded my expectations. I am thrilled with the performance of my solar energy system and the positive impact it has made my energy consumption. If you are considering solar energy, I wholeheartedly recommend, SunPower, as the go-to provider. Trust them to help you harness the power of the sun while making a difference for our planet. From the very beginning, SunPower technicians, displayed exceptional professionalism and knowledge. Their team of experts guided me through the entire process and customizing a solution that perfectly matched my needs. The installation process was seamless. The team demonstrated a high level of expertise, ensuring that every aspect of the installation was carried out with precision. Their customer service has been exceptional throughout my entire journey. It is clear, that they genuinely care about their customers and take pride in what they do.

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1 comment >
Reply from SunPower: Hi Orsete, we are so happy to see how satisfied you are with your SunPower system. Please reach out in the future with any further questions that may arise or any additional feedback. Seeing clients happy and confident with their results in choosing SunPower is always a pleasure. Thank you for helping us change how our world is powered!

T Satterwhite | El Cajon, CA | 07/10/2023

Love having solar power!

SDGE bills cut by more than 4x!

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1 comment >
Reply from SunPower: It is always a pleasure seeing clients happy and confident with their results in choosing SunPower. Thank you for helping us change the way our world is powered!

Dave | Cornville, AZ | 06/22/2023

My experience with their phone tech assistance was great.

I called to discuss my app showing a connection error and Jet had it working in a minute. Jet is great. Thanks,

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1 comment >
Reply from SunPower: We appreciate the glowing review and are thrilled that the team exhibited outstanding professionalism. If there is anything that we can assist with in the future, don't hesitate to contact us. Thank you for helping us change the way our world is powered!

Wendy Schroeder | Winchester, CA | 06/15/2023

Fingers crossed the disappointments don't continue

Within a year of installation, our inverter failed. Unfortunately, the SunPower app doesn't notify you when power productions falls and we didn't know for over two months that we weren't generating any power.

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1 comment >
Reply from SunPower: Your feedback is essential to us in improving our services; thank you for sharing your experience. If you still have questions please call our support team at 1-800-SUNPOWER (1-800-786-7693) or shoot us an email to customersuccess@sunpowercorp.com. Thank you for your feedback and we look forward to talking to you.

Nick | Somers, CT | 06/11/2023

SunPower for Home

Recently opted in at getting solar panels and a battery installed with Sun Power. They've been super helpful and are the best choice for us. They've given us the best options and prices compared to other companies like Sun Run. Looking forward to our installation!

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1 comment >
Reply from SunPower: Nick, we appreciate the review and delighted to know that you are having an exceptional experience with our teams and product. Thank you for helping us change the way our world is powered!

GW | Tustin, CA | 05/05/2023

Lack of Urgency / Poor Communication

Signed our contract in May 2022 and did not have the system activated until April 2023. A large reason we went with SunPower is that they are vertically integrated and were told that we could have a system activated within a few months. We've only had the system for a month so cannot yet give an opinion on the quality and durability of the system. As for the service, the urgency to complete the project and the communication between the SunPower team members and was lacking. See below: - Numerous emails telling us to wait for another couple weeks. This lasted for months. - Several times, our first project coordinator would not even return our calls. He ended up passing us to another coordinator. - When they were grounding our main service panel, they accidentally broke a gas pipe. The SunPower employee mentioned that the gas pipe might have been leaking/broken before the service. Obviously this was not the case. Also, we were initially told to find our own plumber to fix the issue. In the end, they ended fixing the issue, again, with no urgency and took almost a month to cover the hole in our wall. - Although we have many more items to detail, in summary, we must have spent countless hours and well over a hundred communications (calls/emails/etc.) for this project.

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1 comment >
Reply from SunPower: GW, we appreciate your feedback and would love the chance to restore your faith in SunPower. Please give us a call at 1-800-SUNPOWER (1-800-786-7693) or email us at customersuccess@sunpowercorp.com and provide your account and contact information so that we may investigate this further on your behalf. We appreciate you bringing this to our attention and look forward to talking to you soon.

SD Justice | Aiken, SC | 05/04/2023

Great system, The Best!!

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1 comment >
Reply from SunPower: We appreciate your feedback! Thank you for helping us change the way our world is powered!

Dave | Lakeside, CA | 04/18/2023

Top Notch with the Best Installers

There equipment is top notch. Where they also stand out is their installers. We used HES Solar here in San Diego. SunPower and HES was an awesome combination

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1 comment >
Reply from SunPower: Dave, we are delighted to read that our equipment has met your expectations and that your installation went smoothly. Thank you for helping us change the way our world is powered!

Current SunPower solar panel models

Rated power

355 watts

Efficiency

20.1

Number of cells

108

Cell type

Mono-crystalline Silicon

Rated power

375 watts

Efficiency

21.2

Number of cells

108

Cell type

Mono-crystalline Silicon

Rated power

340 watts

Efficiency

19.2

Number of cells

108

Cell type

Mono-crystalline Silicon

Rated power

350 watts

Efficiency

19.8

Number of cells

108

Cell type

Mono-crystalline Silicon

Rated power

360 watts

Efficiency

20.4

Number of cells

108

Cell type

Mono-crystalline Silicon

Rated power

370 watts

Efficiency

20.9

Number of cells

104

Cell type

104 Monocrystalline Maxeon gen III

Rated power

390 watts

Efficiency

22.1

Number of cells

104

Cell type

104 Monocrystalline Maxeon gen III

Rated power

400 watts

Efficiency

22.6

Number of cells

104

Cell type

104 Monocrystalline Maxeon gen III

Rated power

320 watts

Efficiency

19.9

Number of cells

96

Cell type

Mono-crystalline Silicon

Rated power

327 watts

Efficiency

20.4

Number of cells

96

Cell type

Mono-crystalline Silicon

Current SunPower battery models

Type

Lithium-ion

Usable Energy (kWh)

13.00

Inbuilt Battery Inverter

No

Manufactured

US

Warranty (years)

10

Solar panel and battery specification sheets

 
 
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Solar panel and battery warranty information

 
 
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Local installers that sell SunPower solar panels and batteries

 

Where you can buy SunPower brand solar panels online

Site Model No. Price
N/A SPR-MAX3-355-BLK N/A
N/A SPR-MAX3-375-BLK N/A
N/A SPR-MAX2-340 N/A
N/A SPR-MAX2-350 N/A
N/A SPR-MAX2-360 N/A
N/A SPR-MAX3-370 N/A
N/A SPR-MAX3-390 N/A
N/A SPR-MAX3-400 N/A
N/A SPR-E19-320-E-AC N/A
N/A SPR-E20-327-E-AC N/A

Where you can buy SunPower brand batteries online

Site Model No. Price
N/A SUNPOWER SUNVAULT STORAGE N/A

Contact SunPower


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Head Office
1414 Harbour Way S, Richmond CA, 94804
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