5 Best SunPower Solar Panels You Can Buy

SunPower has walked a long road since its inception in 1985 to become synonymous with high-quality solar panels.

While the company does provide several top-tier solar products, it’s safe to say that its panels are what consumers are really after.

SunPower has an array of solar panels made from highly efficient solar cells produced by Maxeon.

Now, knowing a brand is excellent is one thing, but navigating your way through the mountain of product information is another.

Not to worry, though; that’s what we’re here for!

In this article, we help navigate you through the 5 best SunPower solar panels you can buy!

Foreword
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5 Best Types of SunPower Solar Panels


1. M- SERIES

SunPower 420-440W Residential AC Module

The SunPower 420-440W Residential AC Module got Equinox is the most efficient system with the highest AC density available.

It has a 25-year complete system warranty from SunPower (as with all their products), and the 66 Maxeon Gen 6 solar cells are 5% bigger than the previous product line!

This product eliminates any need for additional connections or hardware that isn’t needed.

An added plus: the Equinox System allows for added energy storage for a backup source during power outages or charge reductions.


2. A- SERIES

420-390 W Residential AC Module

The SunPower 420-390 W Residential AC Module is the most powerful solar panel of the brand with patented technology preventing breakages.

It offers up to 60% lifetime energy efficiency – another feeling of trust from the brand!

This product has the highest-power integrated AC module in the solar industry and is 60% lighter than previous designs.

The model panel uses 66 Maxeon Gen 5 cells which are 65% bigger than the X series, which you can find in the next section.

390-400W Residential BLK DC

This 390-400W Residential BLK DC model is extremely efficient, with even bigger solar cells than before.

Here you can expect up to 54% more energy over the 25-year lifetime warranty found on this panel.

This product uses 66 Maxeon Gen 5 solar cells within panels and has a wonderfully smooth look!

430-450 W Commercial A-Series Panels

The SunPower 430-450 W Commercial A-Series Panels are the industry’s most powerful and efficient commercial panels.

These power-dense panels come with the standard 25-year complete system warranty from SunPower.

The model panel uses 72 Maxeon Gen 5 cells which are 65% bigger than previous generations.

For three years, this SunPower panel has been ranked first by Silicon Valley Toxics Coalition’s Solar Scorecard.

A superb choice if you are also considering a LEED certification!


3. X- SERIES

X-Series Commercial AC Solar Panels

The SunPower X-Series Commercial Solar Panels offer a whopping 60% lifetime energy efficiency compared to other conventional industry panels. They are known for their promised reliability!

Alongside their 25-year product defect protection, these panels produce more energy over time.

These solar panels comprise 128 Maxeon Gen 3 solar cells and have ranked first in the Fraunhofer durability test.

X-Series Commercial DC Panel for Helix

The SunPower Commercial DC Panel for Helix is an X-Series panel compatible with a helix roof.

What does this mean?

This panel has pre-installed clips that allow a tool-free installation (and less time disruption, too!).

96 Maxeon Gen 3 solar cells and a solid metal foundation are the perfect combinations for convenience and success.

X-Series Residential DC Panel

The X-Series SunPower Residential DC Panel is one of the most minimalistic and sustainable solar panels.

The 25-year power and product protection is a bonus to the series that has ranked first on Silicon Valley Toxics Coalition 2015 Solar Scorecard.

It doesn’t end there— this panel is the first to have achieved Bronze Cradle to Grave Certification!

The solar cells comprise 96 Maxeon Gen 3 cells per panel.

X-Series SunPower Residential AC Module

The X-Series SunPower Residential AC Module is designed for use with the SunPower Equinox system (discussed in the M Series).

It has a glowing reputation for simple, fast installation to an integrated microinverter and quick shut down capabilities.

This panel type is made out of 96 Maxeon Gen 3 solar cells and comes with a 25-year power and product warranty.


4. E- SERIES

SunPower E-Series Commercial DC Panel

The SunPower E-Series Commercial DC Panel is one of the most reliable and efficient panels out there.

This panel achieved Silver recognition in the Cradle to Grave Certification, contributed to LEEDS categories more than conventional solar panels, and ranked first in Silicon Valley Toxics Coalition 2015 Solar Scorecard.

Made of 96 Maxeon Gen 2 solar cells (or 128 Maxeon Gen 2 cells in the Helix version), you can expect a sturdy and efficient panel with 12% more power over 25 years!

SunPower E-Series Residential AC Model

The SunPower E-Series Residential AC solar panel is designed to work with the SunPower Equinox system and is known for power with a minimalist feel.

This model has a factory-integrated microinverter which allows you to install the system with relative ease.

Made of 96 Maxeon Gen 2 solar cells, you can expect 12% more power over its 25-year power and product warranty compared to conventional systems.

SunPower E-Series Residential DC Panel

The SunPower E-Series Residential DC Panel is known for its high efficiency with solid durability.

This panel gives you 45% more energy than conventional panels over its 25-year warranty.

It is sustainable (with a Bronze Cradle to Grave certificate), ranked first in Silicon Valley Toxics Coalition 2015 Solar Scorecard, and contributes significantly to LEEDS categories.

You’re guaranteed a sustainable, good, quality product made of 96 Maxeon Gen 2 solar cells.


5. P- SERIES

SunPower Performance Series 1000V

Designed for power performance, the SunPower Performace Series guarantees an energetic kick and improved reliability due to the flexible solar cells.

The 25-year power and product warranty has you witnessing minimal power decline (only 0.6% per year) firsthand!

This system is ideal for ground rows or elevated rows.

SunPower Performace Series 1500 Volt

The SunPower Performance Series 1500 Volt solar panels are designed for consistent performance over decades.

Here you find the optimal design for the Oasis Power Plant!

The 25-year warranty sees minimal power loss, ending at an extraordinary level of 82.6%.


Which SunPower Solar Panel Is Best?

Now that you have a brief oversight of the SunPower panels on the market, it’s time to zoom into the technical aspects behind these options.


Residential Solar AC Panels

AspectM-Series 420-440W Residential AC ModelA-Series 420-390W Residential AC ModuleX-Series Residential AC ModulesE-Series Residential AC Module
Efficiency 22.8%20.9-22.5%20.4-22.7%19.9%-20.4%
Maximum Continuous Output Power (VA)384349Around 315315
Impact Resistance1-inch hail @52mph1-inch hail @52mph1-inch hail @52mph1-inch hail @52mph
Operating Temperatures-40 F to 185 F-40 F to 185 F-40 F to 185 F-40 F to 185 F
Size73.7 inches long, 40.6 inches wide72.2 inches long, 40 inches wide61.3 inches long, 15.5 inches wide61.6 inches long, 15.5 inches wide
Weight21.8 kg21.1 kg19.5 kg19.5 kg
Technical Comparison Between Residential AC Panels

Residential DC Panels

AspectA-Series 390-400 W Residential BLK DCX-Series Residential DCE-Series Residential DC Panel
Efficiency20.9%-21.4%20.6-22.7%19.6-20.1%
Nominal Power390-400 Watts350-370 Watts320-327 Watts
Impact Resistance1-inch hail @52mph1-inch hail @52mph1-inch hail @52mph
Operating Temperatures-40 F to 185 F-40 F to 185 F-40 F to 185 F
Size72.2 inches long, 40 inches wide61.3 inches long, 41.2 inches wide61.3 inches long, 41.2 inches wide
Weight20 kg18.6 kg18.6kg
Technical Comparison Between Residential DC Panels

Commercial Solar AC Panels

AspectM-Series 450-475 W Commercial PanelA-Series 430-450 W Commercial PanelX-Series Commercial Solar Panels
Efficiency20.2%-22.3%21.2-22.2%20.6-21.7%
Nominal Power (Watts)450-475 Watts430-450 Watts445-470 Watts
Impact Resistance1-inch hail @52mph1-inch hail @52mph1-inch hail @52mph
Operating Temperatures-40 F to 185 F-40 F to 185 F-40 F to 185 F
Size80.6 inches long, 40.9 inches wide78.7 inches long, 40 inches wide81.4 inches long, 41.2 inches wide
Weight20.67 kg22.3 kg25.4 kg
Technical Comparison Between AC Commercial Panels

Commercial Solar DC Panels

AspectX-Series Commercial DC PanelsX-Series Commercial DC Panels for HelixE-Series Commercial DC PanelsE-Series Commercial DC Panels for Helix
Efficiency21.3-21.7%21.2-22.1%19.6-20.1%20.1%
Nominal Power460-470 Watts345-360 Watts320-327 Watts435 Watts
Impact Resistance1-inch hail @52mph1-inch hail @52mph1-inch hail @52mph1-inch hail @52mph
Operating Temperatures-40 F to 185 F-40 F to 185 F-40 F to 185 F-40 F to 185 F
Size81.4 inches long, 41.2 inches wide61.4 inches long, 41.2 inches wide61.4 inches long, 41.2 inches wide81.6 inches long, 42.2 inches wide
Weight25.4 kg18.6 kg18.6 kg25.4 kg
Technical Comparison Between Commercial DC Panels and Panels for Helix

Performance Series (Large Scale Solar)

AspectP-Series 1000 VP-Series 1500V
Efficiency16-17%16.2-17.2%
Nominal Power330-350 Watts335-355 Watts
Impact Resistance1-inch hail @52mph1-inch hail @52mph
Operating Temperatures-40 F to 185 F-40 F to 185 F
Size81.4 inches long, 39.3 inches wide81.4 inches long, 39.3 inches wide
Weight23.1 kg23.1 kg
Technical Comparison Between Performance Series Solar Panels

Choosing A SunPower Solar Panel

Residential Panels AC Panels

When looking at the residential AC panels data, the following panels are optimal per aspect:

  • Efficiency: The M-Series 420-440W Residential AC Model is the most efficient.
  • Maximum continuous power output: The A-Series 390-400 W Residential BLK DC is the highest.
  • Size: E-Series Residential AC Module is the smallest.
  • Weight: E-Series Residential AC Module and the X-Series Residential AC Module are the lightest.

If efficiency and power are what you’re after (but you don’t mind the weight and a few inches extra) then the M-Series 420-440W Residential AC Model is a great option!

A graph depicting the power and efficiency of the M-Series 420-440W Residential AC Model in comparison to conventional models.
A graph depicting the power and efficiency of the M-Series 420-440W Residential AC Model in comparison to conventional models.
Source: SunPower solar panels

However, if you’re looking for a smaller size and need a slightly less power output, then the A-, X-, or E-Series are panels you should explore.


Residential DC Panels

Glancing at residential DC panels, the following optimal aspects are:

  • Efficiency: the X-Series Residential DC is the most efficient.
  • Nominal Power: the A-Series 390-400 W Residential BLK DC is the highest.
  • Size: X-Series Residential DC and E-Series Residential DC Panel are the smallest.
  • Weight: E-Series Residential SC Module and the X-Series Residential DC Panels are the lightest.

If you prioritize efficiency, weight, and size but you don’t mind a lower power output, the X-Series Residential DC Panels are superb options!

However, if you need the maximum power you can find, the A-Series 390-400 W Residential BLK DC is perfect.

Are you interested in acquiring LEED certification for your home? Click here to learn more.

Commercial AC Panels

Considering AC panels for your business setup?

Here is what the results say is best:

  • Efficiency: the A-Series 430-450 W Commercial Panel is the most efficient.
  • Nominal Power: the M-Series 450-475 W Commercial Panel is the highest.
  • Size: the A-Series 430-450 W Commercial Panel is the smallest.
  • Weight: the M-Series 450-475 W Commercial Panel is the lightest.

If you want efficiency and don’t mind the extra kilos then the A-Series 430-450 W Commercial Panel is for you!

On the other hand, the M-Series 450-475 W Commercial Panel is an excellent choice if you want the power and lightest weight!

But if we’re being honest, these panels come in really close in terms of measurement and power.

In other words, it boils down to what your personal preferences are!

The size difference between A-Series and M-Series solar cells.
The size difference between A-Series and M-Series solar cells.
Source: SunPower

Commercial DC Panels

If a DC commercial setup is what you have in mind, then take note of the following optimal aspects of the panel options:

  • Efficiency: the X-Series Commercial DC Panel is the most efficient.
  • Nominal Power: the X-Series Commercial DC Panel is the highest.
  • Size: the E-Series Commercial DC Panel is the smallest.
  • Weight: the E-Series Commercial DC Panel is the lightest.

The X-series is the most efficient in this category and will give you the most power. If, however, you prefer a smaller, lighter structure, then the E-series is for you.


DC Panels for Helix

  • Efficiency: The X-Series Commercial DC Panel for Helix is the most efficient.
  • Nominal Power: The E-Series Commercial DC Panel for Helix is the highest.
  • Size: the X-Series Commercial DC Panel for Helixis the smallest.
  • Weight: the X-Series Commercial DC Panel for Helix is the lightest.

If you need maximum power, the E-Series is for you!


Large Scale Performance Panels

For your bigger solar setups, such as solar farms, use the following panels:

Efficiency & Power: the P-Series 1500V is the top choice here

Weight & Size: the P-Series 1000V and 1500V are equal in weight and size.

So basically, it’s up to your power needs when choosing here!


Does NASA Use SunPower Solar Panels?

SunPower partnered with NASA and generated high-efficiency solar concentrator cells for their lab facilities.

These cells were then used for the Pathfinder and Helios NASA prototypes!

The top-class efficiency and lightweight nature of the solar cells are what led NASA to go with SunPower as their top choice.

Pretty fantastic technology, wouldn’t you say?

ASA Pathfinder and Helios
Source: Academic Dictionaries and Encyclopedia

Final Thoughts

Choosing the best solar panel for your needs is tricky to navigate!

Thankfully SunPower solar panels offer variations in power, weight, size, efficiency, and other factors that will most certainly cater to your needs.

Take your time to research a panel that sparks your interest, and enquire at a registered supplier if you want to start getting an idea about the next steps to take when setting your system up.

Rest assured, you’ll be dealing with state-of-the-art technology for sure!

If you want to share your thoughts or ask us a question, please feel free to reach out to us in the comments section below! Alternatively, visit our forum and share what is on your mind today!

Charissa Worthmann

Charissa Worthmann

Charissa has a Master’s in Environmental Management (Environmental Science). Her research area of interest and expertise is in the interaction between energy and the environment. She practices as an environmental consultant and has extensive experience working on renewable energy projects.

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