> Also... how do you know there aren't Hawaiians charging their EVs using rooftop solar?

Because of math.

A 6 kW house, to charge a 60 kW battery… so long as everyone with an electric vehicle is charging them at their house for 10 sunny hours to charge from empty, you’re right and I’m wrong.

Some people could get by, but it leaves the solar for nothing else. If you leave the house while the sun is up you better get back because you’re losing daylight!

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simonsquiff 2 days ago | parent | next [-]

If you don't use your solar, it is pushed to the grid (or batteries, if you have them), so really its about the collective solar that exists in the grid and not a house specific view. As solar rollout increases, the greenness of your EV increases even if you don't charge from your rooftop.

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tzs 2 days ago | parent | prev | next [-]

Dude...we are talking about Hawaii. The largest of the islands is just over 4000 square miles. None of the others are over 750 square miles. People drive a lot less in Hawaii than in most of the rest of the country.

The average is 8900 miles per year which is a little under 24 miles per day and a little under 750 miles a month.

If you can charge with solar at 6 kW on a typical EV that will give you about 20 miles per hour of charging. If you can do a little over an hour a day you will be covered.

If you find plugging in for an hour a day to much of a hassle it is under 9 hours a week or 37 hours a month.

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2 days ago | parent | prev | next [-]

[deleted]

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Toutouxc 2 days ago | parent | prev [-]

Dude, literally every single EV-related number you’ve mentioned around here is so insanely off. Two hours at a charger, 20 minutes of charge just to get home, charging an EV 0 to 100 % and now again, charging a 60 kW battery every day. I don’t know what kind of terrible EVs you’ve seen, but they weren’t what normal people drive. Either get some real world experience with EVs or just stop posting about them.

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SV_BubbleTime 2 days ago | parent [-]

Interesting… so, for reference I’m an automotive engineer and have worked one at least three EV platforms for big4.

Good to know how wrong I am on this topic. Let me guess, you own an EV? Well, that certain explains it everything.

	▲	BHSPitMonkey 2 days ago \| parent [-]
		You received some better corrections in earlier replies, which you've chosen to ignore... That's your prerogative of course, but there's no need to resort to "I'll have you know I graduated top of my class in the Navy Seals"-style reverse ad hominem to make an argument. You made some basic mistakes in your previous reply, such as confusing power (kW) and energy (kWh) and assuming that a typical driver in HI commutes something like 250mi each day. This isn't even typical for drivers on the mainland, where plenty of EV+solar owners manage to replenish most or all of their EV usage using rooftop solar generation just fine. (If you're going to answer "well, I never said I was considering the median distance/day case - I was talking about the most extreme scenarios!" then I'd suggest at least bumping up the hypothetical solar installation to 10kW instead of going with the median.)