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Comment by fdasfasdf | Hacker News Reader

> Electric cars have all sorts of awesome features ... They can act as a giant battery for your house.

Things may be different in Australia or the US but where I live it would make as much economic sense as use of your jewelry for openning cans. Or driving nails with your gold bars. Surely, you can do that but at what price and why when there are much more affordable and sensible alternatives.

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It's not that you would replace a normal solar battery system with your car. It's that a car you already have would be able to automatically help with power balancing in emergencies or automatically reduce your power bill when they are plugged in anyway without you doing anything.

https://octopusev.com/ev-hub/what-is-v2g

For example, if there's an excess in wind energy at a given moment, the system can automatically funnel that energy into cars attached to the grid instead of turning off turbines, saving everyone money.

Rooftop solar is fairly prolific in Aus. Plenty of households can charge their car during the day for “free” (assuming sunshine and the car not being at a workplace car park ofc)

In an emergency situation, using jewellery to open cans to save the life of your son would be very reasonable. Even if the jewellery was somehow completely worthless afterwards.

Though in this case, the damage to the car is so minimal it is hardly measurable.

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