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Push for battery subsidy as home owners say solar benefits becoming 'marginal' (www.abc.net.au)

submitted 4 months ago by PetulantBandicoot@aussie.zone to c/brisbane@aussie.zone

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I was quoted around $15,500-$16,000 for a 12.8 to 13.5 kWh battery plus install for comparison.

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[–] makingStuffForFun@lemmy.ml 6 points 4 months ago* (last edited 4 months ago) (3 children)

My understanding is the grid will only pull from solar if required. Is that so? That's how my solar setup works on my caravan, so not sure if it's the same.

I work from home. So my solar (house and caravan) are all utilised heavily during the day.

I'm sure many do now also. That, and timing hot water heating, diahwasher, washing machine. Etc. All should help

[–] anathema_device@bne.social 1 points 4 months ago (1 children)

@makingStuffForFun @PetulantBandicoot "the grid will only pull from solar if required" You export what you aren't using or storing at the moment of generation. The only question is how much that earns you - or costs you. The electricity has to go somewhere and it's not like you can just let it run out on the ground :)

[–] makingStuffForFun@lemmy.ml 4 points 4 months ago (1 children)

You see, that's the opposite of my caravan's solar. It can sit up there in the full sun and potentially generate a lot of power, but it won't send a single thing to the caravan or the batteries unless they request it. So the batteries and the usage of the caravan pull power from the panels, but the panels do not push power, so to speak.

So that makes me wonder if the solar panels on the roof are the same. The reason I say that is that the electricity companies want to charge us for solar generation because they say that we are feeding so much power into their grid that it's stressing the grid out. But if it's the same as my caravan solar then it is not. And I guess that's why I was hoping that somebody who knows about these kind of things could put some input in.

[–] CameronDev@programming.dev 1 points 4 months ago* (last edited 4 months ago)

The grid is effectively an (nearly) unlimited sink. So nearly all your power you generate gets pushed into it.

The catch is that as we all collectively push more and more power in, it increases the frequency (50hz -> 50.1hz), and most inverters have a cuttoff if the frequency gets too high. But as far as I know, that almost never happens, but if it did, that could cause a large set of power generation to drop offline simultaneously, which would then cause a frequency drop and a subsequent brownout.

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