> 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.
[–] jayknight 1 day ago
[–] anthomtb 1 day ago
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.
[–] greggsy 19 hours ago
[–] anthomtb 7 hours ago
[–] tedggh 18 hours ago
[–] pipe2devnull 18 hours ago
[–] jebarker 17 hours ago
[–] londons_explore 14 hours ago
US models approx 2-3 kWh because energy efficiency laws are nowhere near as strict, and they use hot fill of usually electrically heated water.
[–] debatem1 15 hours ago
[–] ghaff 13 hours ago
You're probably right about that. A lot of people grew up without dishwashers and don't have a way to economically install one outside of a major kitchen remodel even if they have the space which many in cities don't have. They're also not the, for lack of a better term, necessities that washers, stoves, and ovens are. And, of course, dishwashers don't eliminate the need for any handwashing and if you aren't cooking or doing a lot of entertaining a lot, they may not be all that useful. I do cook but still probably only run my dishwasher 2 or 3 times per week.
[–] ludicrousdispla 14 hours ago
[–] maartenh 20 hours ago
[–] manmal 1 day ago
[–] zeeveener 1 day ago
[–] pmontra 1 day ago
[–] gertrunde 1 day ago
It's 30kW for one hour.
(Or 1.25kW for 24 hours, or however you prefer).
[–] numpad0 1 day ago
You may then use that water over the course of a day. That's 30 sqin-sec per day. That is not 30 square inches for a whole day. It's second per day.
Or watt hour per week or whatever.
Yes, it can be described like 0.00034722 sqin/day, and that corresponds to no physical object and that would be largely useless.
Why not Joules or Liters? Because that's complicated for anything electrical.
[–] OJFord 1 day ago
[–] buran77 1 day ago
It's unintuitive because a guy named Watt decided "Joule per second" is Watt, so the intuitive units Joule and Joule per second got turned on their head to W times hour and Watt. This is opposite to usual intuition of distance and speed for example, km and km/h. If I redefined the km/h to a "tick", then a km would become "tick times hour".
If you want a "better than nothing" but imperfect analogy, Wh is how much water you have in a bottle, and W is how quickly you can get the water out.
[–] OJFord 10 hours ago
[–] ffsm8 18 hours ago
This discussion seems super silly, considering he's just using the measurement that the industry adopted decades ago...
Are y'all just coming out of a time travel device from the 70s or something?
[–] buran77 12 hours ago
I'll put aside the two-bit attitude and that you don't know that power (W) and energy (Wh) were measured in the exact same way in the "70s or something" (just ask your grandparents).
> the world decided to use kWh as the thing to measure
> kw per day, kw per week, kw per month, kw per year.
There is no such thing as "kw per day". You switched between units from one sentence to the next? The world indeed measures kWh per day, not kW per day. The lazy use kW per day as a shorthand and drop the "hour" to speak faster. The less educated measure "kW/day" because they don't understand the concepts and just parrot a common mistake. When they say "kW/day" what they should actually say is "kWh/day". It's where the unintuitive part comes in, they omit the "hour" or assume kWh is the same as kW/h, like km/h, instead of kW times h.
> This discussion seems super silly, considering he's just using the measurement that the industry adopted decades ago...
The industry adopted the correct measurement units decades before your grandparents were born. You just have a hard time understanding because it's easier to do cheap snark.
Unlike those people from the 70s or something, y'all live in a world with all the information you could want at your fingertips, you even have machines (AI) that digest it for you, and you even had me bothering to give an explanation a kid could process. To be unapologetically ignorant today is the same as being intellectually incompetent, ffsm8.
[–] SamBam 1 day ago
30kW is a rate.
30kWh is a measure of energy, about 100MJ.
30kWh/day is a rate again, 100MJ/day.
It seems clunky, but it's a way energy usage in a house is typically measured.
[–] OJFord 9 hours ago
I said the time period matters when you're talking about it relative to generation. 30kWh over the course of a day is very different to 30kWh over ten minutes.
[–] SamBam 3 hours ago
Except that GP (pmontra) had asked "Is that 30 kW each hour of the day?"
Clearly someone asking that doesn't understand what kWh/day means, and since you were backing GP, it seemed reasonable to guess that you might not understand either.
[–] stavros 21 hours ago
[–] OJFord 9 hours ago
[–] imtringued 21 hours ago
30kWh is 1.25kW for 24 hours or 30kW for one hour.
30kW every hour means 720kWh per day. 30kW all day is also 720kWh per day.
The comment is nonsense.
The only way you can steel man it is by saying he isn't concerned about the 1.25kW, he is concerned about the swings, but he said 30kW twice for two different time spans so that can't be it either.
[–] harikb 1 day ago
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...
[–] alex43578 1 day ago
[–] lostlogin 1 day ago
When we got solar we asked for quotes, but ‘No Tesla’. The sales rep said ‘We get that a lot’.
[–] Lio 23 hours ago
I wasn’t interested in hearing any advantages of a Tesla Powerwall, that brand is toxic to me now.
There’s plenty of good alternatives that don’t fund criminals like Tommy Robinson and Russell Brand.
[–] lostlogin 23 hours ago
We have Sigenergy. Are they better than Teslas? Unsure, but at least I have no idea what the owner(s) think.
[–] Lio 13 hours ago
I want a system that doesn't need to be connected to the cloud.
[–] wlesieutre 1 day ago
[–] amscanne 13 hours ago
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.
[–] trainsarebetter 10 hours ago
And you got a budget opensorce powerwall
[–] throwaway85825 1 day ago
Best practice would be to build a separate structure and physically separate the battery from your house.
https://youtu.be/yO5fJ8z66Z8