Solar panel hail testing – details inside

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Hail exists. Its break panels. Sometimes, the solar panels win! Sometimes, the hail wins. When this happens is a known equation – based upon hail size and speed versus the glass that is used in the panels. All panels are tested under the same characteristics. I thought you might like to know the exact details on how panels are tested – which is the industry standard that these panels are warranted to:

SOURCE: The first is a historical impact test that measures impact toughness of PV modules. UL lab technicians drop a two-inch solid steel sphere from a height of 51 inches onto the surface of the PV module, the energy equivalent of a hail stone measured at one inch and three-eighths in diameter falling at terminal velocity through the sky. The second impact test is a true hail impact. This “classic” test involves placing a perfectly formed spherical chunk of ice into a pneumatic cannon and firing the calibrated ice ball at 10 to 13 critical locations on the PV module. Most often, UL technicians will shoot 25-millimeter, or approximately one-inch, ice balls at the module at about 52 miles per hour.

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John Fitzgerald Weaver
Solar Power Plant Project Developer at Commercial Solar Guy
John Fitzgerald Weaver is a solar developer, digitally as the 'Commercial Solar Guy.' As a project developer and installer, he’s sold and managed 50+ solar projects, totalling over $25 million - with their sizes ranging from 5kW to 1500kW. He’s been involved in many aspects of the solar supply chain – as a company founder, developer, project manager, manufacturer, permit runner, salesman, contractor and financier, climbs mountains, played football, enjoys an IPA or scotch, needs to get away, and really loves this strange connection between politics, energy, finance, environment, etc in the energy world, and likes run on sentences.