Facts about Solar Technology from SunPower

Highest Efficiency Solar Panels

SunPower makes the highest efficiency solar panels you can buy for your roof.*

SunPower holds the world record for the highest efficiency silicon solar panel.*

SunPower® X-Series panels deliver 38% more power.*

SunPower® E-Series panels deliver 31% more power.*

SunPower manufactures the highest efficiency solar panels

Highest Reliability Solar Panels

Unmatched reliability*

SunPower's warranty guarantees the most power.*

SunPower panels average only 0.25% power loss per year over the first 25 years.*

One out of every 20,000 panels has been returned under warranty.*

SunPower predicts its panels will have a useful life of more than 40 years.*

SunPower panels ranked #1 in Fraunhofer durability testing.*

SunPower Utility-scale power plants with onsite O&M staff, deliver more than 99% availability.*

Highest Solar Panel Energy Production, Year 1

SunPower X-Series panels deliver 8-10% more energy per watt in the first year.*

SunPower E-Series panels deliver 7-9% more energy per watt in the first year.*

SunPower panels maintain their energy production much better than Conventional Panels in partly-shaded conditions.*

SunPower X-Series panels have 5x less power drop from a single leaf shading a panel.*

SunPower E-Series panels have 3x less power drop from a single leaf shading a panel.*

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Highest Solar Panel Energy Production, 25 Years

SunPower X-Series solar panels

  1. SunPower X-Series solar panels produce 21% more energy per rated watt over the first 25 years*

  2. SunPower X-Series solar panels produce 70% more energy from the same space over the first 25 years*

  3. A SunPower X-Series solar panel produces the same total energy in its first 14 years as a Conventional solar panel running for 25 years*

SunPower E-Series solar panels

  1. SunPower E-Series solar panels produce 20% more energy per rated watt over the first 25 years*

  2. SunPower E-Series solar panels produce 60% more energy from the same space over the first 25 years*

  3. A SunPower E-Series solar panel produces the same total energy in its first 15 years as a Conventional solar panel running for 25 years*