Better Solar Panels

High efficiency home solar panels

SunPower made it's name for offering the highest efficiency solar panels, better performance and top quality installations. It all translates to better solar panels, more savings, and happier customers.

And with nearly 40 years of dedicated solar experience, we're the only U.S.-based solar company that's been around longer than our 25-year warranty. 

Designed to work with SunPower Equinox® home energy system, SunPower’s high-quality standards ensure that the solar cell technology makes more energy from every drop of sunshine. Factor in the elegant styling and durability, it’s no wonder our company has been leading the industry the longest.

Learn more about the most efficient solar panels available to homeowners.

Better Solar Panels

Photovoltaic modules, commonly known as solar panels, are a technology that captures solar power to transform it into sustainable energy.

SunPower offers multiple high-efficiency solar modules that are rigorously tested to ensure system reliability, performance, and savings. There are many options of solar panels options with varying aesthetics and wattages, but the main two types of solar technology are categorized as follows:

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Front-contact solar modules

Also known as "Passivated Emitter and Rear Contact" (PERC), are an advancement on conventional panels with an extra layer within in the back side, allowing some of the sun’s light to be reflected back into the solar cell.

Back-contact solar modules

Known as IBC technology, or “interdigitated back contact”, are highly durable due to a thick layer of tin-plated copper on the back that holds the cell together. Because they do not have contacts on the front of the panel, they provide higher performance due to higher use of the light spectrum.

Learn more about these two options on our Blog:

IBC vs. PERC: What's the Best Type of Solar Panel?

SunPower solar works harder for you, every day

If you’re going solar, go all the way. SunPower Equinox home solar systems are designed to wake up earlier, work harder, and turn off later in the day. So you can make the most of abundant solar energy and the vast savings it brings.

SunPower Equinox systems generate more power in less space with fewer visible parts for a minimalist design.

And with mySunPower® monitoring you can track your solar output & performance from virtually anywhere, using our phone, tablet, and desktop applications.

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Better Solar Panels and Energy Storage

Enhance your home power system with solar batteries

Adding a home battery to your SunPower Equinox solar system is the perfect way to make the most of the solar energy you produce. SunVault® storage is the only complete home solar system that's designed and warranted by one company. From the highest efficiency panels available to energy monitoring software, every component is designed to work together perfectly—from sun to switch.* 

Learn more about solar battery storage

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SunPower® Complete Confidence Warranty Other Home Solar Company Warranty
25 years As short as 12 years

Industry-leading, complete system warranty

Our warranty covers your rooftop solar system for 25 years (10 years for monitoring hardware), including performance, labor and parts. We have absolute confidence in our panels’ ability to deliver more energy, reliability and savings over time. Batteries are covered under a separate 10 year warranty.

Get the details on our industry-leading solar warranty

Schedule your free consultation today, and see how much you can save with high efficiency solar from SunPower.

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Learn more about the best solar technology

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.

Learn more about SunPower's high efficiency solar panels

How do solar panels work

How do solar panels work?

Learn more about how solar panels capture the sun's energy to power your home.

How do I choose a solar panel installer

How do I choose a solar panel installer?

Find out how to make the right choice with a company you can trust.

How are solar panels installed

How are solar panels installed?

Check out this five-step guide.

Our panel warranty vs. the competition

Our panel warranty vs. the competition

Get answers to frequently asked questions about solar warranties.

Get started with SunPower solar

Frequently asked questions about high efficiency solar panels

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 look at 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 offers multiple high efficiency monocrystalline solar panel options with efficiency of up to 22.8 percent and a lead performing panel on the market today.

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 efficiency 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 offers solar panels with up to 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.

SunPower has rigorous testing and quality assurance standards to offer the market’s best home energy system and panels on the market. That’s why we offer the industry’s best warranty and stand behind our panel’s durability and performance.