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LA Solar Group
16238 Raymer St , Los Angeles, California, United States

Memberships : NA
Industry : Renewable Energy
Basic Member
Since Oct, 2017

Today, solar panels come in many varieties to meet the different cost, performance, size, efficiency, and aesthetics needs of customers.Solar cells made from these technologies are connected together, usually in sets of 60, 72, or 96 cells to form a solar panel, or module.  The panel, or modules, in turn, are connected together to form arrays (e.g. groupings on different roofs), which are then collectively referred to as the Solar System.

Solar Panels are rated by their DC power output, in Watts (W), under standard test conditions (STC) and under real world test conditions (PTC). The closer the PTC value is to the STC, the better since  the "real world" performance would be closer to the "marketed" performance.  When looked at as a ratio (PTC/STC), the ideal would be 100%.


A solar cell's efficiency measures its ability to convert light into electricity.  The higher the efficiency the better (assuming the costs are about the same), with residential efficiencies in the low 20% range considered to be excellent at present.  Higher efficiency cells mean that fewer are needed to attain the same panel wattage - hence, requiring less roof space.  Alternatively, a panel utilizing high efficiency cells would produce higher wattage in the same space.  The comparison metric is (PTC Watt rating/sf).   STC watts could be used as well but PTC is the more realistic and conservative value.  Either way, when comparing, the value used needs to be consistent.

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Supplier Details
Company NameLA Solar Group
Business CategoryRenewable Energy
Address16238 Raymer St
Los Angeles
United States
ZIP: 91406
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