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NITE says: "Over four years, snowfall has caused damage to PV systems equivalent to the output of residential solar panels in approximately 75,000 homes. The total capacity of the affected systems is approximately 30MW.
NITE recorded 43 snow and ice related incidents to residential PV systems between 2018 and 2021.NITE said the incidents often involved damage to solar module frames. In some cases, the tilt angle of these pv systems was less than 0.6 degrees, which made it more difficult for snow to slide off the pv panels.
The institute urges PV system owners to carry out regular site inspections, use surveillance cameras and implement snow removal at an early stage. They also recommend developing a snow removal plan.
NITE says: "It may be a good move to budget for snow removal prior to project planning." NITE provides most of its data in an open repository.
In 2021, scientists at the University of Alberta, Canada, proposed a new set of parameters to improve on the original short-term model for predicting the impact of snow on PV installations. These parameters include the warming effect of irradiance on the backsheet, the heat capacity and the irradiance through the snow. (This article is compiled from pv-magazine)
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