Not all solar panels are created equal

Watch how SunPower®  solar stacks up against the competition.


Designed by SunPower in California, Maxeon® solar cell technology makes more energy from every drop of sunshine. Factor in our elegant styling and impressive durability, and it’s no wonder we outshine the rest.

Record-Setting Solar Panels

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Cell Failures, Virtually Eliminated

Conventional solar cells lose power over time because of corrosion and breakage. But the unique design of SunPower solar cells eliminates 85% of the reasons conventional cells fail. So you’ll enjoy outstanding performance and savings with your commercial or home solar system for decades to come.

SunPower Equinox™ Home Solar Systems
SunPower Equinox system

A complete system, designed to work together

Gone are the days of clunky, piecemeal solar systems. The SunPower Equinox™ system is the only complete home solar system that is designed and engineered by one company. From the highest efficiency panels available to energy monitoring software, every component is design to work together perfectly—from sun to switch.

Explore SunPower Equinox >

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Industry-leading warranty, all from one company

The Equinox system is backed by the only home solar warranty to cover your whole system (not just the panels). That means you never have to wonder which company you can depend on. We’ve got you covered for 25 years*—including performance, labor and parts.

Get the details on our industry-leading warranty >

  • *. 10-year coverage for monitoring hardware

What to Look for in Solar Panels

Three questions to ask when buying solar panels

How much energy will my panels produce; how long will my system last; and who makes my solar panels? 



SunPower solar panels are better by design

Find out why SunPower's solar panels are the most durable and most efficient on the market.

Energy prices are on the rise again. Why wait to install solar on your home?

Learn more about solar panels

Frequently Asked Questions

How many solar panels will I need for my home?

The number of panels you’ll need for your home will depend on several factors. The easiest thing to do is to look at your electricity bill to get your home’s hourly energy usage, multiply that by the peak sunlight hours for your home (3 to 4 hours on average), and divide by 300, which is an average wattage for solar panels (although they can range from 150 to 370).

Hourly energy usage x peak sunlight hours / 300 = number of panels. This typically ranges from 17-42 panels.

One simple way of answering “How many solar panels do I need” is to let a local solar installer check out your home and give you a quote for system size (including number and wattage of panels), cost, and estimated annual and lifetime savings. Let our Solar Advisors match you with the perfect SunPower installer in your area. Read more about determining number of panels on our blog.

Which is the best type of solar panel?

There are several types of solar technology, but almost all home solar panels use crystalline silicon (monocrystalline or polycrystalline). The main difference is the purity of the silicon.

Monocrystalline silicon is made from a single-crystal, and polycrystalline silicon is made by melting silicon fragments together. In monocrystalline panels, there are fewer impurities, so the electrons are less likely to get blocked before leaving as electricity, thus these panels are “more efficient” or better at turning sunlight into electricity.

SunPower produces the highest efficiency monocrystalline solar panels available. Our X22 has a record-breaking efficiency of up to 22.8 percent, making it the best performing panel on the market today. Polycrystalline panel efficiency typically ranges from 15 to 17 percent.

Read more about types of solar panels on our blog.

Why do high-efficiency solar panels matter?

More power in less space. A high efficiency rating ensures your solar system will generate more electricity with fewer panels on your roof. Fewer panels with more power are great for smaller roofs as well as maintaining curb appeal on larger roofs. Plus, with fewer high efficient panels, you’ll have room to expand your solar system if you get an electric vehicle or add on to your home. Right now, SunPower makes solar panels with more than 22 percent efficiency, the highest efficiency available today.

Using fewer materials per watt is also great for sustaining our planet. In fact, it’s a double benefit, because less energy is required to construct the system, and more solar energy is generated at a faster rate.

Read more about solar panel efficiency on our blog.

Do solar panels wear out over time?

In short, yes. Your roof isn’t a very hospitable place, so conventional solar cells lose power over time because of corrosion and breakage. To save cost, these solar panels are commonly built with less durable design and materials. Our patented Maxeon® solar cells use a metal foundation to support the silicon and redundant connections, making them almost impervious to corrosion and breakage.

Plus, comprehensive third-party studies rate SunPower panels #1 in durability and are proven to degrade more slowly than conventional solar. That’s why we offer the industry’s best warranty and predict our panels will have a lifespan of over 40 years.

Don’t just take out word for it. Our solar cells are used in harsh conditions like on NASA’s solar rover roaming the polar icecap and can withstand salt water on solar powered boats. Plus, they’ve powered the only solar plane that’s flown around the world.

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