| ▲ | masklinn 11 hours 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. |
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| ▲ | jayknight 10 hours ago | parent | next [-] |
| Here's Alex from Technology Connections testing powering things in his house from his Hyundai Ioniq 5. https://youtu.be/yO5fJ8z66Z8 |
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| ▲ | anthomtb 9 hours ago | parent [-] | | 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. | | |
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| ▲ | manmal 9 hours ago | parent | prev | next [-] |
| We have a heat pump with SOCP 5, but are still using 30kWh per day now. |
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| ▲ | zeeveener 9 hours ago | parent | next [-] | | 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. | | |
| ▲ | darkwater 6 hours ago | parent [-] | | 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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| ▲ | masklinn 8 hours ago | parent | prev | next [-] | | That's 2-3 days worth without changing your use pattern, which surely you would do if you expected a long blackout period? | |
| ▲ | pmontra 9 hours ago | parent | prev [-] | | Is that 30 kW each hour of the day or 30 kW per day? | | |
| ▲ | alex43578 9 hours ago | parent | next [-] | | 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. | |
| ▲ | gertrunde 9 hours ago | parent | prev | next [-] | | 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] | | |
| ▲ | numpad0 6 hours ago | parent | next [-] | | It's like you had a faucet with cross section of 2 square inches, and 15 seconds with that faucet wide open would fill a jug. That jug holds 30 squareinches-seconds of water. 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 9 hours ago | parent | prev [-] | | Pretty sure GP understands that, their point being you can't just wave away 'per unit time' when talking about it relative to generation, it matters. | | |
| ▲ | buran77 8 hours ago | parent | next [-] | | "30kW per day" makes no sense. It's like saying "100km/h per day". W is a unit of power, Wh is a unit of energy. 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. | |
| ▲ | SamBam 8 hours ago | parent | prev [-] | | "30kWh per day" isn't waving away anything. 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. |
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| ▲ | 8 hours ago | parent | prev [-] | | [deleted] |
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| ▲ | tdhz77 10 hours ago | parent | prev | next [-] |
| As soon as the Rivian has v2h I will buy |
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| ▲ | harikb 9 hours ago | parent | prev [-] |
| 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... |
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| ▲ | alex43578 9 hours ago | parent [-] | | 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. | | |
| ▲ | lostlogin 8 hours ago | parent | next [-] | | This puzzles me. When we got solar we asked for quotes, but ‘No Tesla’. The sales rep said ‘We get that a lot’. | | | |
| ▲ | 3 hours ago | parent | prev [-] | | [deleted] |
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