Are EVs as ‘Green’ as They Appear?

Wednesday, December 29, 2021 Francisco 1 Comments

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No one asks questions these days, you don't have to justify if you say it's green it must be . No questions asked. people only want to look good. 

at the moment batteries last at best 130,000 miles, however an EV to justify his carbon cost must be used at least 124,000 miles. So at the moment when someone switches to an EV is helping the ecosystem exactly zero.  Sorry. But pls keep doing it at lest you feel good and pay a lot of money for a machine that does exactly the same with less autonomy.



April 14th 2021, Jefferies published a research note entitled “Are EVs as ‘Green’ as They Appear?” in which they conclude an electric vehicle must be driven 200,000 km (or 124,000 miles) before its “whole of life” carbon emissions equals that of an internal combustion engine.

 

Their analysis is very similar to ours and details the tremendous amount of energy (and by extension CO2) needed to manufacture a lithium-ion battery. Moreover, they point out that a typical EV is on average 50% heavier than a similar internal combustion engine, requiring more steel and aluminum in the frame. They conclude the “embedded carbon” in an EV (i.e., when it rolls off the lot) is therefore 20–50% more than an internal combustion engine.

 

Our analysis suggests a modern lithium-ion battery has approximately 135,000 miles of range before it degrades to the point of becoming unusable. An extended-range Tesla Model 3 has an 82 kWh battery and consumes approximately 29 kWh per 100 miles. Assuming each charge cycle has a ~95% round-trip efficiency and a battery can achieve 500 cycles before starting to degrade, we conclude a Model 3 can drive 134,310 miles before dramatically losing range. Incidentally, Tesla’s Model 3 warranty covers the battery for the lesser of eight years or 120,000 miles and does not apply until the battery has degraded by at least 30%. If the Jefferies analysis is correct (and we believe it is), then an EV will reach carbon-emission parity with an internal-combustion vehicle just as its battery requires replacement. This will come as a huge disappointment for those believing that EV adoption will have significant impacts on CO2 reduction.




Jeffreies Research note




1 comment:

  1. Jorge Mendiondo29 December 2021 at 15:15

    Concordo, mas em parte, quanto mais gente comprar, a tecnologia e meios de produção vão se aperfeiçoar, e essa conta tende a melhorar. A poluição é transferida para fora das cidades melhorando a qualidade do ar para a maioria das pessoas. Fora a manutenção muito mais simples e a segurança do carro que é bem superior, o errado é esse modismo de achar q está salvando o planeta...

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