KentuckyFC writes: On 13 March 1989, a powerful geomagnetic storm severely disrupted the Hydro-Québec high-voltage grid triggering numerous circuit breakers and blacking out much of eastern Canada and the north eastern US. Since then, Earth has been hit by numerous solar maelstroms although without such large-scale disruption. But the smaller-scale effect of these storms on low voltage transmissions line, and the equipment connected to them, has been unknown. Until now. Researchers from the Lockheed Martin Solar and Astrophysics Laboratory have analysed insurance claims for damage to industrial electrical equipment between 2000 and 2010 and found a clear correlation with geomagnetic activity. They say that the number of claims increases by up to 20 per cent on the days of highest geomagnetic activity. On this basis, they calculate that the economic impact of geomagnetic damage must amount to several billion dollars per year. That raises the question of the impact these storms are having on household electronic equipment, such as computers, smartphones and tablets, and whether domestic insurance claims might throw some light on the issue. So if your iPhone has ever been fried in mysterious circumstances, the culprit may have been the Sun.