141–150 of 311 posts
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That’s the forum I followed. The failures often came from BMS or other parts, too. There’s a lot of focus on the cells, but people are buying whole packs with a BMS.
Then that’s more the issue with the BMS rather than the cells
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All of the quotes and interactions I had with the local solar installers were reminiscent of the used car lot if not outright fraud. I was able to do what was permissible myself and a regular licensed electrician did the rest. The equipment is UL listed. There was some learning curve but I found the diysolarforum.com to be a pretty good resource to learn what I didn't know. I ran the whole setup standalone for about…
This approach may vary by country. Not a single sparky in Australia will sign off on someone else's solar/battery install.
P.S. I've never heard of sparky being used as slang for an electrician, sounds very aussie.
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Economies of scale baby. Another 10x more in production another 30% less in price.
> Economies of scale baby. That's what they said about regular electric grid power too - that it "soon" would be so cheap as to be unmetered. That was half a century ago and it didn't pan out...
Solar power has neither the geopolitical problems nor the squishy 'environmentalist' ick factor of fission. There's no reason not to expect another halving or two of PPP dollar per Watt to follow.
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Then that’s more the issue with the BMS rather than the cells
Problems with the BMS can become problems with the cells very quickly.
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Sounds great, but are there actual businesses who will come to your home and do an install, or do you need to to become a mad-scientist electrician and DIY? I got quotes on getting an LG system a few years ago and it was 4X these prices (also for me a problem is that my 'ancient' panels from 2013 use a single inverter instead of microinverters, so if I touch the system I have to replace it all). I keep hoping there w…
All of the quotes and interactions I had with the local solar installers were reminiscent of the used car lot if not outright fraud. I was able to do what was permissible myself and a regular licensed electrician did the rest. The equipment is UL listed. There was some learning curve but I found the diysolarforum.com to be a pretty good resource to learn what I didn't know. I ran the whole setup standalone for about…
I had exactly the same experience. They absolutely would not tell me the actual system cost, only how much I would save on my current bill per month. It felt exactly like a car salesman only talking about monthly payments, and it was horrible.
Earlier quoted context omitted.
All of the quotes and interactions I had with the local solar installers were reminiscent of the used car lot if not outright fraud. I was able to do what was permissible myself and a regular licensed electrician did the rest. The equipment is UL listed. There was some learning curve but I found the diysolarforum.com to be a pretty good resource to learn what I didn't know. I ran the whole setup standalone for about…
This approach may vary by country. Not a single sparky in Australia will sign off on someone else's solar/battery install.
Earlier quoted context omitted.
This approach may vary by country. Not a single sparky in Australia will sign off on someone else's solar/battery install.
Isn't there a distinction between the house wiring and the solar/battery stuff? P.S. I've never heard of sparky being used as slang for an electrician, sounds very aussie.
When I moved into a new house in Australia I asked the real estate agent if I could extend the fence, and he said I'd need a cheapie to do that.
I said ok but scratched my head as to why it needs to be cheap, only to find out later what he actually said was chippy, slang for a carpenter.
Earlier quoted context omitted.
This approach may vary by country. Not a single sparky in Australia will sign off on someone else's solar/battery install.
Isn't there a distinction between the house wiring and the solar/battery stuff? P.S. I've never heard of sparky being used as slang for an electrician, sounds very aussie.
Earlier quoted context omitted.
In central/northern Europe in january solar goves 10% of the output of summer, and you need 3-4x power to heat compared to cooling down in summer.
Northern Europe is much further from the equator than most of the rest of the world. To the point where rooftop solar stops being a great option. That said there’s a few ways to boost that 10%. PS: Geothermal can also slash energy needed for heating. Ground sourced heat pumps are the only reasonable small scale solution, but in urban areas going a little deeper starts to make a lot of sense.
Perhaps as a complete energy solution. But it is already the case today that a domestic rooftop solar in Europe (maybe not in the very north) has payback times <10 years. And that's without factoring in batteries which (as the OP describes) are rapidly approaching affordability.
I'd rather hear a projection from an engineer/scientist/operations person in the industry. This kinda reads like it's written by an armchair expert who thinks about batteries a lot, but doesn't have much to do with building that future being described. Sometimes the technical details matter and projected scaling trends aren't an inevitability.
Reminds me of a projection I read back in the early 1960s (I think). The author charted the rise in speed of human beings over ten or twenty thousand years, where that speed had increased when horses were tamed, clipper ships were built, steam trains invented, automobiles, airplanes, and then rockets. (Assuming this was just after Gagarin, that got "us" to 5 miles per second.)
He pointed out that the acceleration was (ahem) accelerating, with thousands of years between humans running and horses being domesticated, vs. about sixty years between the Wright brothers and Gagarin. Extrapolating, it was clear we would exceed the speed of light (using a warp drive or something) by the year 2000.
Of course the current record speed was set in 1968 at about seven miles per second, and not even equaled since 1972. So much for extrapolation.