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>Most batteries are around 90-95% efficient. Electrical motors are around 85-90% as well. So that isn't that bad. I guess you'd also have take into account los
by qwytw 3y ago
>Most batteries are around 90-95% efficient. Electrical motors are around 85-90% as well. So that isn't that bad.
I guess you'd also have take into account loss during transmission (which seesm to vary wildly between 2-10% depending on location) and charger efficiency. IIRC if we add it all up it's about 70%.
- _hypx 3y agoWith renewable energy, you will have to deal with intermittency too. That requires energy storage and more transmission losses.
- _aavaa_ 3y agoPumped hydro is a well established technology with a round trip efficiency ~75%. As for the cars, they can we can install chargers at all parking spots and take advantage of the intermittent energy during the day to charge the cars then. Many colder climates have engine blocker heater outlets as a standard feature for outdoor parking, adding 120V or 240V chargers to new parking spots (and retrofitting old ones) is not a far fetched idea.
- jillesvangurp 3y agoThat two is share by hydrogen, which again just adds to this. So, it doesn't change the math. Everything downstream of the fuel cell is not something you can avoid and any improvements you make there benefit BEVs with and without a fuel cell. The key thing to focus on here is how much the fuel cell adds in terms of inefficiencies.