Almost all home solar panels are made using crystalline silicon. You might be familiar with silicon because it’s used inside the microprocessors of computers, cell phones and other electronics. Silicon conducts electricity, which makes it perfect for these devices and for solar panels.
SunPower Corporation is an American energy company that designs and manufactures crystalline siliconphotovoltaic cells and solar panels based on an all-back-contact solar cell. SunPower panels produce more electricity Per Watt than most. SunPower panels are extremely reliable, but in addition, they claim to produce more energy over the course of their lifespan than many other panels. SunPower produces the highest efficiency monocrystalline solar panels.
The main difference is the purity of the silicon. Monocrystalline silicon is made from a single-crystal, and polycrystalline panels are made by melting silicon fragments together. In monocrystalline panels, the electrons have more room to move around, thus are “more efficient” or better at turning sunlight into electricity.
SunPower/Monocrystalline has the highest efficiency ratings among panels available to homeowners today, from 15 to more than 22 percent. Polycrystalline panel efficiency typically ranges from 15 to 17 percent.
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