this post was submitted on 19 Sep 2023
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Rooftop solar eats up all demand in South Australia, world’s most renewable grid (reneweconomy.com.au)
submitted 1 year ago by vividspecter@lemm.ee to c/australia@aussie.zone
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[–] 18107@aussie.zone 6 points 1 year ago (1 children)

I managed to get a vehicle to grid (V2G) charger recently. When these make mass market it will be a huge deal.

My car has about 5x the energy storage of a standard house battery, so I can run the house for several days from the car.
A better option is to switch to wholesale prices. When the wholesale prices go negative (which happens fairly often in SA), I get paid to charge my car. When energy prices spike, I get paid a lot to discharge my car. My last energy bill was about -$190 for a month (not a typical month, I got $170 when the grid interconnecter was down for a day, which caused high prices all day).

I've never had any issues with running out of charge, and I don't think I'll ever pay for electricity again.

[–] TheHolm@aussie.zone 4 points 1 year ago

What puzzles me why house batteries are about $1000/kWh wile battery cells are about $100/kWh wholesale. Whole hi-tech part is in cells, test just packaging and wiring. Why we do not see house batteries for better prices? Car with battery will cost you less than house battery of same capacity as car has.