All solar panels are not the same. The cells inside solar panels determine panel efficiency (how well panels will produce electricity over time). Every year, SunPower is listed as number 1 for solar panel efficiency. What does that mean for you? - higher efficiency rating means that solar panels are able to produce more electricity. The more electricity you can produce, the less you will need to buy from the utility company.
Bottom line, you save more money with high efficiency panels.
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