this post was submitted on 26 Dec 2023
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[–] Grayox@lemmy.ml 18 points 2 years ago (1 children)

An EV running on a coal fired grid still has less emissions that a prius. Facts dont care about your feelings.

[–] u_tamtam@programming.dev 6 points 2 years ago (3 children)

Could you please run us through your maths? I'm legit curious.

[–] SaltySalamander@kbin.social 11 points 2 years ago (1 children)

An ICE is only, at most, 35% efficient. In contrast to lithium batteries and electric motors, which is more like 90% efficient. Electricity produced from the dirtiest coal plants that exist, used in an EV, is more efficient and, thus, more environmentally conscious, than burning gasoline in an ICE.

[–] tigerjerusalem@lemmy.world -1 points 2 years ago (1 children)

What about the billions of cells that must be produced and replaced as the scale grown unto millions and millions of cars? And all the mining of rare earth elements it requires?

[–] RubberElectrons@lemmy.world 2 points 2 years ago

It turns out that the lithium is very recyclable. The process of disassembly is what's tricky, but one of Tesla's pre-musk founders is working specifically on this problem.

We can already do it. Mining is (for now) cheaper. Something legislation, applied carefully, can resolve.

[–] zhunk@beehaw.org 3 points 2 years ago

I don't know if their statement is universally true, but the EPA's fuel economy / total emissions calculator seems to show it for what I've put in. You can put in a Prius or random EV and see how they compare.

https://www.epa.gov/greenvehicles/electric-vehicle-myths#Myth1

https://www.fueleconomy.gov/feg/Find.do?action=bt2

[–] lustyargonian@lemm.ee 1 points 2 years ago* (last edited 2 years ago)

My guess would be the efficiency of coal power plants (35%) and electricity transmission (90%) + battery charging of an EV (80%) would be more than efficiency of transporting oil in ships (50%) , then in an ICE truck (40%) to fuel pumps and then finally the efficiency of the ICE car (40%).

I picked the numbers from internet, but they seem plausible.