The main differences between Maxeon and Panasonic solar panels lie in their efficiency, warranty, cell technology, durability, and price, despite both brands being recognized for high-quality products.
Efficiency and Power Output
- Maxeon panels feature very high efficiency, with some models like the Maxeon 6 series reaching up to 22.8% efficiency, and even higher lab-tested efficiencies (up to 24.9%). Maxeon panels typically have power outputs ranging from about 415W to 475W depending on the model.
- Panasonic panels also maintain high efficiency, particularly their HIT series, which ranges from about 19.4% to 21.7%, with some models like the EverVolt series hitting around 21.2%-21.6% efficiency and producing about 370W to 400W.
Warranty
- Maxeon offers one of the longest warranties in the industry—a 40-year product and performance warranty, which is 15 years longer than the industry standard. This underscores their confidence in durability and long-term output.
- Panasonic provides a strong 25-year warranty covering product and performance, which is industry standard and indicates reliability over a long lifespan, but shorter than Maxeon’s.
Cell Technology and Durability
- Maxeon solar cells use a unique design developed from SunPower’s original technology, known for high durability and performance in real-world conditions. Maxeon panels also feature a solid copper foundation that adds to their durability and reduces degradation.
- Panasonic panels utilize HIT technology with half-cut monocrystalline cells (132 cells per panel versus Maxeon’s standard number of cells), which offers advantages such as better shading tolerance, increased efficiency, and greater resistance to cracking due to smaller cell size. Panasonic panels also perform well in hot climates due to a favorable temperature coefficient (-0.26%) and are made to withstand harsh weather.
Price and Market Position
- Maxeon panels are generally more expensive (around $3.05 per watt or higher) due to their superior efficiency, longer warranty, and premium build.
- Panasonic panels tend to be somewhat less expensive than Maxeon’s, while still delivering high quality, making them a popular choice for homeowners seeking a balance between cost and performance.
Summary Comparison Table
| Feature | Maxeon | Panasonic |
|---|---|---|
| Efficiency | Up to 22.8% (some lab tests higher) | Around 21.2% – 21.7% |
| Power Output | 415W to 475W | 370W to 400W |
| Warranty | 40 years (product and performance) | 25 years (product and performance) |
| Cell Technology | Standard monocrystalline cells with copper foundation | HIT technology with half-cut monocrystalline cells (132 cells) |
| Temperature Coefficient | Approximately -0.29% to -0.34% | Around -0.26% |
| Durability | Very high, with strong resistance to degradation | High, with good shading tolerance and crack resistance |
| Price | Higher ($3.05/W and up) | Lower than Maxeon |
| Manufacturing Origin | Panels manufactured internationally (e.g., Singapore and India) | Made in Japan and Malaysia |
Conclusion
- Maxeon solar panels stand out for the absolute highest efficiency, longest warranties, and premium durability, making them better suited for customers prioritizing maximum long-term performance and willing to invest more upfront.
- Panasonic solar panels offer very strong efficiency and durability with advanced half-cut cell technology and strong warranties at a lower price point, making them an excellent choice for high-quality, reliable solar that balances cost and performance.
Choosing between them depends on budget, desired warranty length, and specific site conditions such as shading and climate.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-are-the-main-differences-between-maxeon-and-panasonic-solar-panels/
