After reviewing hundreds of solar panels, we found that SunPower offers the best (and most expensive) solar panels. Why trust EnergySage? Choosing the best solar panel can feel overwhelming, but it's easier than you might think. If you select a quality solar installer, in most cases they'll install quality solar panels.
SunPower SunPower's M-Series 440 W solar panels offer the most power at 21.2 watts (W) per square foot. They're highly efficient and come with a great warranty, which covers your entire system (the panels, inverters, and racking equipment). The biggest downside of SunPower panels is the price.
You'll also want to choose panels from a company that backs its panels (and ideally your entire system) with a strong warranty. We reviewed hundreds of solar panel models and found that five brands stand out: SunPower, REC, Panasonic, Maxeon, and Jinko Solar. SunPower, REC, Panasonic, Maxeon, and Jinko Solar offer the best solar panels.
The quality of the installation and other equipment (such as the inverter) also contribute to how good the solar panel system is overall. Price also varies depending on the solar panel brand and installer. The Which? members we surveyed owned solar PV panels from more than 20 different brands.
According to our findings, the brands with the best solar panels include REC Group, Sunpower, and AIKO. What is considered the "best" solar panel in the UK will vary depending on who you ask, and what metrics you value. Some homeowners may prefer a low-cost solar panel over one that's highly efficient, for example.
Efficiency Although any of the options on this list offer excellent solar panel efficiency rates, the AIKO COMET series has the highest efficiency rate of up to 25.2%. This means these panels are capable of converting 25% of the sunlight that hits them into electricity.