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POLYCRYSTALLINE SOLAR PANELS. “Energy of the Future”. PANEL PRODUCTION PROCESS. Raw silicone formed into a block or “ingot” This block is then sliced into thin cells Each of these cells is printed on one side with a positive material and on the other side with a negative material
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POLYCRYSTALLINE SOLAR PANELS “Energy of the Future”
PANEL PRODUCTION PROCESS • Raw silicone formed into a block or “ingot” • This block is then sliced into thin cells • Each of these cells is printed on one side with a positive material and on the other side with a negative material • Cells connected in series to create a panel • Panels have the appearance of shattered glass • Ex: 12 V panel @ 18 V = 36 cells connected in series with each cell producing 0.5 V
EFFICIENCY • Cheaper per watt than mono-crystalline panels but less efficient • Double the efficiency of amorphous panels but more expensive • Polycrystalline = 13-15% efficient • 3-5 years in energy payback (Study done by National Renewable Energy Lab in Golden, CO.) • Efficiency = amount of power produced / size of panel