SunPower vs Tesla

Jordan Grimmer
Jordan Grimmer | Senior Editor

SunPower and Tesla are both well-known names in the solar industry. SunPower is a leading manufacturer in the industry with over 30 years of experience, a substantial period of time in which the company has pioneered a wide range of solar technologies. Tesla has been in the sustainable energy business for over two decades and unveiled its solar technology in 2016. Both companies manufacture high-quality and high-performance solar products, including solar panels and solar batteries.

Continue reading for a breakdown of SunPower and Tesla reviews on BestCompany.com, as well as a detailed comparison of each companies’ solar products and services.

SunPower logo
#20 SunPower
8.6 Overall Score
3.7
star star star star_half star_border
(4,319)
Tesla logo
#197 Tesla
3.4 Overall Score
1.9
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(25)

Overview

SunPower

Panels from

SunPower

Inverters from

SMA

Batteries from

SunPower

Workmanship Warranty

25 Years

Equipment Warranty

25 Years

NABCEP Certified

Yes

Purchasing Options Offered

N/A

Time in Business

39 Years

Tesla

Tesla

Tesla

Powerwall

12.5 Years

25 Years

N/A

Loan, Cash

21 Years

Ratings

SunPower

Overall Score
8.6 of 10
Review Score
3.7
star star star star_half star_border
Value for Money
4.3
star star star star star_half
Quality of Product or Service
4.4
star star star star star_half
Company Trustworthiness
4.4
star star star star star_half
Likely to Recommend
8.6 of 10

Tesla

3.4 of 10
1.9
star star star_border star_border star_border
2.3
star star star_half star_border star_border
2.0
star star star_border star_border star_border
1.6
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1.2 of 10

Pros & Cons

SunPower

PROS

  • High-Efficiency Panels
  • Solar Monitoring with Panel Level Data
  • Industry-Leading Warranties

CONS

  • Customer Service Complaints

Tesla

PROS

  • Solar battery storage solutions
  • Tesla app for system monitoring
  • Available in all states

CONS

  • Limited financing options
  • Consultation fee

Reviews

SunPower

Number of Reviews
4,319
Review Breakdown
3.7
star star star star_half star_border
1 star
9%
2 star
2%
3 star
3%
4 star
12%
5 star
74%

Tesla

25
1.9
star star star_border star_border star_border
1 star
72%
2 star
4%
3 star
4%
4 star
4%
5 star
16%

Reviews for SunPower

Helpful Favorable Review

star star star star star

Ethan Furman

January 31st, 2024

DETAILS

I had a great experience with SunPower. Very high quality panels, excellent warranty, and great savings compared to what I’m paying for with the utility. Given SunPower has been in business for decades, I feel very comfortable using their products.

Helpful Critical Review

star star star_border star_border star_border

Ton van der Willigen

June 8th, 2024

DETAILS

The service for repairs is really bad, Mico inverters are breaking down often and for a replacement you have to wait 3 months or more. This time they made an appointment between 8 and 10 and around 11 I had to call them with the question when are you? Around 12:30 I got the message appointment cancelled we are coming the next day between 8 and 10 just before 10 I got the call appointment cancelled we are coming next week, let's see if they are showing up not much hope in the service company out of Orlando Florida.

Reviews for Tesla

Helpful Favorable Review

star star star star star_border

no sugarcoating

June 23rd, 2022

check_circle

Review Source

Assuming I am reviewing the one and only Tesla, I had a quote from them for solar panels + whole house battery system and they provide the best industry terms, warranty AND at the best price. They only offer one simple option to finance, no gimmicks. The only reason why I didn't give 5 stars is their current backlog, over 6 months waiting now (to be fair 5 months on Tesla and 1 month on my energy company) and still no final word on where things stand. I will update this review when I hear back or move forward with them

Helpful Critical Review

star star_border star_border star_border star_border

Stacy Milyard

December 3rd, 2023

DETAILS

Horrible company…had to take over a 20 year lease as part of buying our home. First of all they don’t make any difference, our electric bill is high, when I ask for assistance with these I’m told “they can see they’re working fine” and I ask to send someone over to check, they only do that if I want to buy more which I definitely do not…scam scam scam this company needs to be shut down

The Final Word

Availability

SunPower solar equipment is currently available in 38 states, while Tesla solar solutions are available in all states.

SunPower systems are available in the following states:

  • Arizona
  • Arkansas
  • California
  • Colorado
  • Connecticut
  • Delaware
  • District of Columbia
  • Florida
  • Georgia
  • Hawaii
  • Idaho
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Maryland
  • Massachusetts
  • Michigan
  • Minnesota
  • Missouri
  • Nevada
  • New Hampshire
  • New Jersey
  • New Mexico
  • New York
  • North Carolina
  • Ohio
  • Oregon
  • Pennsylvania
  • South Carolina
  • Texas
  • Utah
  • Virginia
  • Washington
  • West Virginia
  • Wisconsin

Equipment and Customization

SunPower offers residential solar panel, energy storage, and EV charging solutions that are tailored to meet the unique solar needs and preferences of each customer. The company’s products are available in two different systems, each of which are available for installation by SunPower dealers/installers. SunPower’s solar systems include the following:

  • SunPower Equinox® system — A comprehensive solar system that includes SunPower’s minimalist solar panels. The system is designed to generate more power in less space while also eliminating unnecessary hardware and utility boxes on your home’s exterior walls.
  • SunVault® storage system — SunPower’s solar battery system that can be paired seamlessly with the Equinox system. The system uses excess generated energy to power essential home appliances during a power outage, while also reducing your peak-time electricity charges.

It’s worth noting that SunPower’s solar panels are some of the most efficient in the industry. The company’s M-Series (440W panel) offers up to 22.8 percent efficiency — the average efficiency range of most residential solar panels is 15 to 20 percent.

Tesla offers similar solar options to that of SunPower, including solar panels, solar batteries, and EV charging stations. However, Tesla sets itself apart in the industry with its Solar Roof and Powerwall products:

  • Tesla Solar Roof — A roof shingle solution that is composed of glass and steel solar shingles that operate similarly to traditional solar panels. The Solar Roof can cover the entire roof of your home, maximizing surface coverage area for power generation. Compared to traditional solar panels the Solar Roof also offers a more durable and aesthetically pleasing solar solution.
  • Powerwall — Tesla’s solar battery storage system that is compact and provides 24/7 energy security. The Powerwall system is available from a wide variety of solar installation companies and it can be easily paired with the Solar Roof.

It’s important to note that while Tesla’s Solar Roof product offers increased energy efficiency and a more aesthetically pleasing design, it’s a far more expensive option when compared to traditional solar panels. The average cost of installing solar panels ranges from $9,000 to $50,000, whereas the cost of installing a Solar Roof (including roof replacement and Powerwall products) is upwards of $150,000.

Warranties

SunPower provides various warranties to protect different components of your solar system. SunPower’s warranties include the following:

  • 25-year Complete Confidence product warranty (equipment warranty)
  • 25-year workmanship warranty
  • 25-year performance warranty

Tesla provides the following warranty coverages:

  • 25-year panel performance warranty
  • 10-year comprehensive warranty

Installations and Monitoring

SunPower and Tesla solar products are primarily installed by dealers. In addition to installing solar products, dealers will also typically act as the customer care center for your solar system. 

Both SunPower and Tesla provide solar monitoring after installation through streamlined mobile apps — SunPower provides the mySunPower® app and Tesla provides the Tesla app. Both companies’ apps allow you to manage your home solar, storage, and electricity use directly on your phone, ensuring that you can keep an eye on your solar system’s productivity from anywhere.

Financing Options

SunPower offers increased flexibility in financing options for your solar system. You can purchase a SunPower solar system outright or you can finance your system with a solar loan, power purchase agreement (PPA), or a solar lease.

Similarly, you can purchase a Tesla solar system outright, but the only financing option the company provides is Tesla Financing, an option that allows you to purchase your solar energy system without paying all costs upfront.

Top Choice

SunPower Logo
SunPower

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