Greetings Wrenches, I am a new member and have been listening in for the past couple months, very grateful to have found this amazing resource. Big Up to all involved!
We have a doomsday-driven customer who is apparently concerned that next year the sun will wipe out the very devices intended to harvest its energy. I have pasted a portion of his message below: "A NOVA special on PBS this evening indicated that the sun is entering a phase of maximum activity, peaking in 2013, that could include coronal mass ejections which could damage not only various components in the power grid, but also most modern electronics in cars, cell phones, etc. My solar powered back-up system is supposed to provide back-up power in the event of loss of the power grid. Has any consideration been given to the effect of solar flares or electro-magnetic pulse effects on solar panels, charge controllers, inverters and associated components? I assume that the batteries themselves would be relatively unaffected, and that the inverter would probably be at highest risk for damage either from a surge from the power grid or from damage to IC chips from an electromagnetic pulse. Are the individual solar panels particularly susceptible to such damage? Since the charge controllers and inverter are housed in metal boxes, are they essentially the same as Faraday cages, protecting the components contained inside of their respective boxes? I realize that a sufficiently strong electromagnetic pulse, whether man-made or from the sun, will probably fry most electronic devices. But I would consider spending a bit more if additional hardware, not contemplated in the current contract, might provide some additional measure of protection." I am wondering if anyone on the list has information on the potential effects of increased solar activity on PV equipment. How would you respond to this customer's concerns? -- Corey Shalanski Joule Energy New Orleans, LA
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