Guaranteed Solar Performance

From end to end, SunPower guarantees you the highest level of solar energy system performance. Installation is fast to minimize disruption. And SunPower panels perform. Ten years of comprehensive data show that on average, SunPower® solar panels deliver 105 percent of their expected energy production. Plus, they’re built to withstand real-world conditions, so your long-term maintenance costs are impressively low—with an impressively high 98 percent uptime.

3rd Party Tests Show SunPower Panels Have the Highest Efficiency
3rd Party Tests Show SunPower Panels Have the Highest Efficiency

Best Solar Performance in Real-World Conditions

  • SunPower panels outperform others early in the morning, late in the day, and on cloudy days.
  • They effectively absorb different wavelengths of light to generate more electricity.
  • They perform better at high temperatures than others. Because they're more efficient at converting light into electricity (and not heat), the hotter it gets outside, the better they perform compared to the competition.
  • They maintain efficiency during initial break-in. Most panels lose 3% efficiency when first exposed to sunlight. Not SunPower.

Solar Performance Beyond 25 Years

Youe SunPower solar panels come with a 25-year warranty. But we don’t think you’ll need it because SunPower solar panels are designed to last longer than that. With our well-trained solar installers, 24/7 monitoring and around-the-clock service, we’re there for you. Which may be why we have more solar energy customers—and repeat customers—than any other solar power company in the world. Bottom line? SunPower is the best solar investment you can make.

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Solar White Paper

  

High-Confidence Prediction of Energy Production from High-Efficiency Photovoltaic Systems

Understand the attributes that influence energy production from SunPower modules relative to other technologies.

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