In recent years, SunPower has launched high-efficiency solar panels called E-Series and X-Series in multiple countries including Japan and Australia. However, their newest product, X22, was just released in the United States and gives homeowners the option to choose the most efficient solar panel available with a 22.8% conversion efficiency.

“Solar technology differs widely from brand to brand, so it’s important for consumers to consider that not all panels deliver the same amount of energy, look elegant on a roof, or are guaranteed to last as long as promised,” Howard Wenger, SunPower president, business units, said in a statement. “SunPower panels are the most efficient that homeowners can buy, and we stand behind them for a quarter century. We’re proud to hold the world-record title for efficiency.”

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