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More Information on the Solar Panel

Daily Solar Insolation Map

The National Renewable Energy Laboratory produces a helpful map detailing the regional solar insolation (average solar radiation per square meter) for the United States. Solar insolation is the highest in the southwest, with solar panel installations in states like Arizona achieving as much as 7-8 kWh/m2/day. If you need additional help with installing yoru solar panels, check out our solar panel installation section.

Professional Standards

A solar panel has to meet the following performance and safety standards:

  • Electrical Safety Tester (EST) Series (EST-460, EST-22V, EST-22H, EST-110)
  • IEC (International Electrotechnical Commission) 61215 (crystalline silicon performance)
  • IEC 61646 (thin film performance)
  • IEC 61730 (safety)
  • UL (Underwriters Laboratories) 1703
  • CE mark in Europe

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