hail

US news outlets have reported resident concerns about leaked toxins from solar facilities in Texas that were damaged by a hailstorm. The Solar Energy Industries Association (SEIA) has rejected the reports, which contained categorically false information.

Scientists from Pakistan, Qatar and Saudi Arabia have conceived a new experimental setup to conduct hail impact tests for photovoltaic modules. The first tests showed that monocrystalline panels lose less efficiency than their polycrystalline counterparts with the same number of busbars.

GCube Insurance says that hail damage accounts for less than 2% of filed claims but constitutes more than 50% of total costs for solar facility loss claims.

A research group in Switzerland has enhanced the hail test stand to measure the impact of ice balls with larger diameters and higher speed on solar panels. The new testing approach will reportedly enable solar panel makers to assess their products with adequate safety margins.

New research from India claims solar modules with 3.2 mm-thick front glass may not be strong enough to withstand storms producing big hailstones. The scientists found that a front glass of at least 4 mm should be used to avoid significant damage.

Massimo Albino Russo, head of business development for Enerqos Energy Solutions, recently spoke with pv magazine Italy about its smart O&M service to detect dysfunctions in solar arrays hit by hail. The Ameresco Group subsidiary uses drones and artificial intelligence to deal with PV system damage.

The hail storms that occurred recently in northern Italy damaged several photovoltaic systems. pv magazine Italy retrieved a report from the Vrije Universiteit Amsterdam from 2019 which tried to shed light on the damage caused to solar installations by hail by analyzing the effects of a severe hailstorm that occurred in the Netherlands in 2016. According to their assessments, damages to PV modules are mostly derived from hailstones of at least 3 cm in diameter.

Scientists in the United States used machine learning to analyze maintenance reports, performance data and weather records from more than 800 solar farms located across the country. The analysis allowed them to determine which weather conditions have the biggest impact on PV generation, and to suggest the most effective ways to boost the resilience of PV installations to extreme weather events.

In the second installment of this series, pv magazine talks with Michael Kolodner of Marsh to learn about the evolution of hail risk management and how insuring a solar project is about more than just the policy.

The destructive potential of hail on solar arrays has only been fully realized in the last two years. In this series, pv magazine talks with experts in storm modeling, risk insurance, and damage mitigation to learn how solar arrays can survive nature’s wrath.