SunPower Quality Tested: Built for Long‑Term Performance
At SunPower, we understand that solar is a long-term commitment. We also understand that the quality and longevity of the solar equipment used in each solar system are essential for our customers to feel confident in their investment. SunPower works hard to offer only the best products on the market: products made by manufacturers with the strongest reputations for high standards and extensive reliability testing. Every custom-designed solar system installed by SunPower is crafted around this quality-tested equipment.
What “Quality Tested” Means at SunPower
Here at SunPower, “Quality Tested” is a way of doing business. From our monocrystalline panels to our racking components and solar storage solutions, every product we offer must stand up to the highest standards. Additionally, our high-efficiency solar systems are installed all over the nation, which means they must stand up to a wide range of environmental conditions. This is why our team carefully reviews all vendor testing policies to ensure each product has been evaluated for durability, performance, and reliability for the entire lifetime of the system in all conditions.
- 1Environmental Stress Testing
- 2Mechanical Load Testing
- 3Electrical Performance Testing
- 4Material and Component Testing
Environmental Stress Testing
During environmental stress testing, solar panels are run through a gauntlet of different stressors, such as wide temperature swings, changes in humidity, and, of course, varied UV levels. These tests help to ensure that the materials and manufacturing of the products can not only withstand the weather of diverse climates, but also continue to perform well.
*System performance depends on several factors, including shading, weather, and system design.
Why Quality Testing Matters
Quality testing is a policy that we take very seriously here at SunPower. We believe our customers deserve the best from us, and since solar panels spend decades exposed to the elements, thorough testing is essential to delivering on the quality we prioritize. The right tests ensure that:
Materials hold up over time
Electrical components perform as expected
Panels resist cracking, corrosion, and wear
Systems continue producing energy year after year
While no system can eliminate all risk, rigorous testing helps support long‑term reliability and performance.
Quality Tested + Professionally Installed
Quality testing is the foundation of a good solar system, but a solar system is only as strong as its design and installation. Our custom designs are meant to optimize a solar system’s energy output for the specific needs of the home. Additionally, SunPower works with local certified installers who follow industry best practices and local building requirements. Proper installation helps ensure your system is positioned, mounted, and connected for optimal performance.
Disclaimers
System performance depends on several factors, including shading, weather, and system design.
Warranties are provided by the manufacturer; terms vary by product.
Incentives and rebates vary by location and may change.
SunPower does not provide tax, legal, or accounting advice. Customers should consult a qualified professional.