Posted by Jimmydog on March 21, 2021 at 07:43:39 from (198.47.57.159):
In Reply to: Solar Panel Question posted by WNYBill on March 19, 2021 at 06:02:14:
Bill, yes about 15-20%. Some one mentioned moon shine (not the good stuff either) and I've seen it happen under just the right conditions; clear panels, full moon, and snow on the ground, and I'll see 1 or 2 amps. Not much at all really, but kind of cool.
I could see where pollen would become a problem, might have to wash them from time to time. Me, I've never washed the panels, I have seen the wife do it a couple times over the years but I let nature take care of cleaning them. Not sure what motivates the wife?
ROI wasn't a consideration when I went solar, in fact I kind of fell into it backwards. It's a long story so I won't boor you; but at the time I put my first system in I figured I was spending 11 times as much per Kw (ouch!). When I updated to the system I have now that rate dropped to 3x. With prices as they are now I think it's close to even with grid supplied. Thing about cost comparisons are that system cost is fixed once it's installed but who knows what electricity will sell for in twenty or thirty years? Which brings me to the last point.
I'd bet that decommissioning costs are already figured into the project if it's bonified utility company. It's just normal operating protocol as I understand it. But I could be wrong. The thing about 25 year life span is that panels don't just stop working at the end of their warrantied life time, they just don't out put as much as when their new. So it's quite possible that even after twenty years the powers to be (pun intended) might decide to keep them on line longer depending on what conditions are in the future. As for what to do with them after they're retired? I suspect just like lead acid batteries and aluminum somebody will figure out a way to efficiently recycle them by then. Hope I'm around to say I told you so!
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