Solar systems are often described in terms of the amount of power they are capable of producing in a given instant (measured in watts or kilowatts). The most important factor to take into account when comparing residential solar systems, however, is the amount of actual electricity the system is expected to generate during its lifetime (measured in kilowatt-hours). When compared to other brands, SunPower high efficiency solar panels produce the most electricity in a wide range of conditions over the lifetime of the solar system.
More Electricity in Real-World Conditions
Residential solar panels from SunPower are the most reliable on the market, generating the most electricity over the life of your solar power system.
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.
Independent Tests Confirm SunPower Produces the Most Electricity.*
Universities and independent research laboratories around the world compared the performance of solar panels from SunPower against other technologies. In each case, SunPower solar panels were the clear leader.
* Arizona State University: 7% more than Poly-Si (Test dates: June – Aug 2008); Loughborough University (CREST): 9% more than Poly-Si (Test dates: 2007-2008); University of Stuttgart (IPE): 7% more than HIT (Sanyo), 16% more than thin film (Test dates: June 2006 – May 2009); University of Cyprus: 7% more than a-Si (Mitsubishi), 16% more than Mono-Si (BP Solar) (Test dates: June 2006 – May 2009).