SunPower X-Series Hits 21.5 Percent Efficiency

sunpowercorp.comSunpowerSunPower’s new X-Series modules for residential rooftops offer 21.5 percent efficiency, validated by NREL.

The series uses third-generation Maxeon solar cells, built on a solid copper foundation, making them virtually impervious to the corrosion and cracking that typically degrade conventional panels.

SunPower solar panels are backed by the industry’s first combined 25-year product and power warranty.

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