Killer deal on Solar |
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offgrid
Senior Member Joined: 23 Jul 2018 Online Status: Offline Posts: 5290 |
Topic: Killer deal on Solar Posted: 14 Sep 2019 at 2:47pm |
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Yep, 1/2 percent loss of power per year is the industry standard expectation. So about 15% loss in 30 years. That's for glass front modules, don't expect that from "flexible" ones.
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft 2015 Rpod 179 - sold |
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Olddawgsrule
Senior Member Joined: 20 Sep 2017 Location: New Hampshire Online Status: Offline Posts: 1014 |
Posted: 14 Sep 2019 at 1:24pm | |
+2 on that. My Chinese panels are 12 years old now and I figure have lost about 5% of power. Tested last year and figure with the curve of degrade usable for about 10-12 more.
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offgrid
Senior Member Joined: 23 Jul 2018 Online Status: Offline Posts: 5290 |
Posted: 14 Sep 2019 at 1:04pm | |
+1. You absolutely cannot categorize Chinese manufactured solar modules as “cheap junk”. About 60% of all PV modules made are manufactured in China. They are used in essentially all the large scale solar installations installed in the US and are considered bankable by the institutions financing these plants, which are expected to have lifetimes of 25-30 years or longer.
There are low quality consumer products being manufactured in China and other countries of course. As always, it is caveat emptor and many products are not designed to last longer than their warranty period. Things you can llook for in solar module construction are the solar cells uniformly laid out and not touching each other, good quality fastening and sealing of output wires, delaminations or bubbles in the encapsulant, and weak or poor fitting frames. Also of course make sure the module is making power. Measure it’s open circuit voltage, short circuit current, and current into a battery at full charge. Do this on a clear day with the module directly facing the sun and compare to the specs. Don’t expect a 100 watt module to ever make 100 watts though. About 80 is more like it under real world conditions. |
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft 2015 Rpod 179 - sold |
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GlueGuy
Senior Member Joined: 15 May 2017 Location: N. California Online Status: Offline Posts: 2653 |
Posted: 14 Sep 2019 at 9:55am | |
That said, Nature Power seems to be a Chinese company (offices in mainland China, Hong Kong, and Georgia). All of the stuff I saw on their web site is 12V, which would be mostly oriented towward consumer solar.
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bp
2017 R-Pod 179 Hood River 2015 Ford F150 SuperCrew 4WD 3.5L Ecoboost |
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geewizard
Senior Member Joined: 16 Apr 2017 Location: Spokane Online Status: Offline Posts: 347 |
Posted: 14 Sep 2019 at 9:05am | |
And what kind of solar panel are they? Reputable brand? Cheap Chinese junk? Makes a difference.
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2021 Winnebago Micro Minnie 1708FB
2017 R-Pod 177 (Blue) HRE SOLD 2004 Outfitter Apex 8 camper 2014 Toyota Tundra DC |
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GlueGuy
Senior Member Joined: 15 May 2017 Location: N. California Online Status: Offline Posts: 2653 |
Posted: 13 Sep 2019 at 2:38pm | |
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bp
2017 R-Pod 179 Hood River 2015 Ford F150 SuperCrew 4WD 3.5L Ecoboost |
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Olddawgsrule
Senior Member Joined: 20 Sep 2017 Location: New Hampshire Online Status: Offline Posts: 1014 |
Posted: 13 Sep 2019 at 12:42pm | |
Move your decimal point.. $1.79 a watt.. LOL I do the same all the time. |
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GlueGuy
Senior Member Joined: 15 May 2017 Location: N. California Online Status: Offline Posts: 2653 |
Posted: 13 Sep 2019 at 9:29am | |
I think it was a one day sale. Still, at 18 cents per watt including the charge controller is not too bad.
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bp
2017 R-Pod 179 Hood River 2015 Ford F150 SuperCrew 4WD 3.5L Ecoboost |
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JR
Senior Member Joined: 31 Aug 2018 Location: Manistee, MI Online Status: Offline Posts: 364 |
Posted: 13 Sep 2019 at 7:52am | |
It must have been a special HD was running yesterday because the link now shows $179 in the Michigan area
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Jay
179/2019 |
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JR
Senior Member Joined: 31 Aug 2018 Location: Manistee, MI Online Status: Offline Posts: 364 |
Posted: 13 Sep 2019 at 7:50am | |
Hit post reply too soon
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Jay
179/2019 |
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