re: where will we get the juice for all these EVs?

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So the grid connected to your home is required to power the batteries for EV’s ,but EV’s will power your home for days? How? I’m confused!

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It’s called an energy storage device. It stores energy for later use. You can do the same thing with batteries on your house, but the EV just gives you the ability to do either.

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So the grid connected to your home is required to power the batteries for EV’s ,but EV’s will power your home for days? How? I’m confused!

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Not sure if you’re being facetious but yes, a fully charged 75+ kWh battery (I believe the largest current Tesla offering is 100 kWh) will power your entire home for days.

This is why grid infrastructure and residential wiring are such a big talking point regarding EV’s - when you install a 240V, 40A charger in your garage it immediately becomes by far the largest electrical load in your house when it’s charging. In fact, it’s likely using more power than everything else in your house combined.

This is also why these batteries represent a big opportunity for improvement of our electrical distribution methods. The ability to store that amount of energy efficiently could theoretically take a huge strain off of the grid during high demand. Or it could allow power plants to constantly run at peak efficiency rather than constantly cycling up and down based on load.

The caveat, of course, is that in reality these batteries aren’t just plugged in ready to accept a charge at all times. If everyone drives an EV and that’s the only high-capacity battery they own, then the electrical demand will more than double at night when the EV’s are plugged in and recharging.

So it’s a double-edged sword. Long-term I think you would see systems developed with two batteries - one permanently installed at the house, taking a slow-ish charge during low-demand hours. The other is the car battery, which would be charged directly from the permanent battery rather than the grid. But you lose efficiency that way and it obviously requires more batteries (and more lithium) so who knows.