this post was submitted on 18 Jun 2026
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Electric Vehicles
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Using an electric car as a buffer to capture cheap off-peak energy is something I looked into for our house. I don't drive very much, so the car would essentially stay at home and do the home battery thing all the time - with the ability to serve as a car every once in a while ๐
But there are two problems with this:
You may just want to look into a whole home battery backup system. Other than the obvious feature of providing power during an outage, they can also be used as a source of power during peak usage times.
That's what I do. Solar to batteries. Though friends with EVs use their's for power outages all the time, which is useful because the region has volatile weather much of the year.
Youโre shopping for a car that can act as a battery. You should be shopping for a battery that can act as a car.
Can you point me to such a thing? I'm interested ๐
Thereโs a long list, you just need to figure out which provides the most value to you.
Could always do an EV conversion on your existing car. Itโll cost about as much as a new car, but you wonโt have to deal with all the added BS around modern vehicles.
Funny thing, that's how I ended up with my current EV. I was pricing out an EV upgrade (taking an old EV, building it a new battery and adding fast charging), and for the price of just the raw battery components (batteries and BMS, no wire or anything), it was the price of my Bolt... But the bolt was done and cost no effort, and ended up being cheaper because I got a whole car for the price of the battery.
Yeah, I don't get the same privacy as an old car but like... I actually ended up liking this car a lot.
I expect in most of the world that isn't wild west, you can't. It would either be illegal because that's no longer a car that has passed approval and/or you would need to register it as a new car and pay some astronomical sum for that.
peak hours is all the time. is everyone using electric heat?
I guess. I only go by my electricity provider's spot prices and in the winter, they're jammed on high day and night.