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JA Solar JAM72S09 JAM72S09 -390/PR

JA Solar JAM72S09 JAM72S09 -390/PR

Very Good
  • Rated Power: 390W
  • Output Warranty Term: 25 years ,
  • Materials Warranty Term: 12 years
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Average Cost per Watt
Marketplace Average
—— EnergySage Avg
—— Industry Avg
Great Price
$2.73/Watt or less
Above Market
$4.09/Watt or more
Great Price
$2.73/Watt or less
Above Market
$4.09/Watt or more
Want a custom solar estimate for your home? Try our Solar Calculator. To compare updated solar panel prices by brand, system size, and more, check out our article on the cost of solar.
Rated Power
Rated Power per Cell
Power Tolerance
Temperature Coefficient
PMax: -0.37
Voc: -0.3
  • Snow
  • Wind
  • Hail
  • Fire
Power (measured in watts) and efficiency (how well panels convert sunlight to electricity) are some of the most common metrics used to compare solar panel products. While they are not the only means of comparison, they are important determinants in how much electricity you can produce with a solar panel system. Metrics like power tolerance and temperature coefficient are also important ways to analyze the potential performance of solar panels under the different conditions they will experience over their lifetime. Learn how panels from different manufacturers stack up against one another in our updated article about the best solar panels on the market.
Output Warranty Term
25 year,
Output Decline
Year 1
Years 2 to 25

Output at End of Warranty Term
Materials Warranty Term
12 years
Solar panels generally come with an output warranty covering the energy production of the panel, and a materials warranty protecting you against undue wear and tear on your equipment. Learn more about solar panel warranties.
Cell Colors
Frame Colors
Backsheet Colors
Solar panels typically have black or blue cells, white, silver, or black backsheets, and silver or black frames. Bifacial solar panels are one exception to these rules, as they have transparent backsheets.
Cell Type
Panel Dimensions
1988 mm L
1005 mm W
40 mm D
Cell Count
The physical characteristics of a solar panel have an impact on the product’s performance. For example, metrics like efficiency and wattage are based on the type, size, and number of solar cells used in a panel.
  • china's Flag China
Solar panels are made all around the world. While the bulk of solar panel manufacturers are based in Asia, companies in the United States, Canada, and other countries also produce high-quality photovoltaics.
Certifications Received
Organizations like the International Electrotechnical Commission (IEC) and Underwriters Laboratories (UL) create national and international standards for photovoltaic solar panels to ensure any products on the market meet certain specifications for safety and reliability reasons.
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