Comment by masklinn
1 day ago
Also very important: the cybertruck is not the only vehicle capable of doing that (the keywords are V2H and V2L, V2H is the more convenient — the car just plugs into the mains and acts as a house battery — while V2L means you have to go and plug your stuff to the car's mains outputs directly)
> Most of the disasters I'm aware of people either get their power back in a short enough amount of time that they can use a normal generator for the gap
TBF an EV car has an absolutely massive battery relative to the electric consumption of a house, unless you're using resistive heating all around. Especially if you ration use.
Here's Alex from Technology Connections testing powering things in his house from his Hyundai Ioniq 5.
https://youtu.be/yO5fJ8z66Z8
I live in an area prone to high winds and we occasionally have pre-planned power shutdowns (I think PSPS is the term).
My Ioniq 5 has been a godsend. No, it can't power the house without dorking around with my electrical panel. But we can run the fridge, dishwasher, a few standing lights and keep phones and computers full charged.
I used a similar setup to Alex's but with the outlet in the rear seat instead of the V2X connector. I will probably by the V2X connector since it supposedly hanldles higher power draw.
I can’t imagine using a dishwasher with limited power?
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Is that the new PlayStation?
TIL about his extra's channel, thanks!
We have a heat pump with SOCP 5, but are still using 30kWh per day now.
That's 2-3 days worth without changing your use pattern, which surely you would do if you expected a long blackout period?
On most modern EVs, that's at least 3 days worth of power if the vehicle is not being driven. Larger vehicles naturally have far larger batteries.
Mmmh no? 90kWh battery packs are not that common. An M3 or MY LR AWD have an 82kWh. Some Mercedes and some Chinese model have a 100+kWh battery but the most common setup is between 60 and 70.
Anyway I agree that in emergency conditions it can go a looong way for a house.
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Is that 30 kW each hour of the day or 30 kW per day?
30 kWh per day, while a clunky unit, is what most people would understand when talking about home consumption. It’ll be what their utility typically reports, how you’d want to size a battery, etc.
Sort of neither?
It's 30kW for one hour.
(Or 1.25kW for 24 hours, or however you prefer).
[Link: https://en.wikipedia.org/wiki/Kilowatt-hour]
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As soon as the Rivian has v2h I will buy
The value of a used 24 KWh battery used in, say, an old EV non-tesla car - $2000 (note this still has plenty of life left). Example: a 2013 Nissan Leaf
The value of the same, repurposed to a "powerwall" - $10k per 10 KWh
The value of it once attached to a "movable powerwall" - :) add a few more zeros
Clearly, I am in the wrong business...
You can get good batteries for a lot cheaper than a power wall. Just like when the Tesla family of companies tried to do home solar - big premium for the name.
This puzzles me.
When we got solar we asked for quotes, but ‘No Tesla’. The sales rep said ‘We get that a lot’.
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Like what?
If you have a string inverter setup, I’m not aware of anything good that is cheaper. If you have micro inverters then sure, but otherwise you have additional hardware cost.
Batteries are cheap, an unsafe installation burning your house down, extremely expensive.
Best practice would be to build a separate structure and physically separate the battery from your house.