4 ms·
ICE cars have a few key deficiencies - lots of energy lost to heat - aggregate efficiency lost to going to refueling stations - decreased efficiency over the
by parker_mountain 4y ago
ICE cars have a few key deficiencies
- lots of energy lost to heat
- aggregate efficiency lost to going to refueling stations
- decreased efficiency over the life span of the vehicle
EV cars have a few key efficiencies
- able to regenerate power on braking (a HUGE amount, and also why hybrid cars last so long)
- longer lifespan of vehicle and drive train (EVs are significantly more reliable, and the lack of moving parts means that wear takes quite a lot longer). an example of this in practice is the significantly better reliability of hybrid cars, which reduce hours on the ICE engine with batteries to great benefit
and we haven't even unlocked all of the benefits, battery density, and recycling stories available for EVs that will propel them further.
The key deficiencies for EVs right now are
- cost - this has been going down over time, EVs are still firmly in the luxury segment, although we will likely see a new sub-$25k EV with reasonable mileage by the end of the decade
- battery pollution - mining the batteries is bad, there is no way around it. battery recycling is a new technology and will be crucial for EVs in the future, both for cost reasons, but also pollution
- tire pollution - the heavy weight of EVs leads to high particulate matter of rubber, but this is also something that is being actively worked on. It also increases load wear, but new battery tech will help mitigate this.
- power grid - high ev saturation will overload the powergrid, although this is greatly mitigated by solar banking and low peak charging. This might be one of the hardest things to overcome, as it requires significant public spending, but it's not hopeless at all.
No matter which way you look at it, EVs are the future, but there are still lots of issues to be worked on.
- zamnos 4y agoNot just regenerate power on braking, but regenerative braking also means fewer consumables in the form of brake pads. Which, interestingly, the dust from pads is third after tires which is second to the ICE engine. The other thing we've still haven't had enough time to fully discover is how much individual cells wear out and the big picture of the economics of swapping out only the individual cell that's bad. There's already been some practical work doing that, I'm just not aware of any longitudinal studies about it.
- reducesuffering 4y ago> we will likely see a new sub-$25k EV with reasonable mileage by the end of the decade Right now, 2023 Chevy Bolt are being sold in the US for $26.5k msrp, with $7.5k off EV credit, and a 259 mile range.
- m463 4y ago> power grid Isn't the power grid a bunch of wires in the air or on the ground that can span thousands of miles? Compare that to oil wells, supertankers, refineries, fuel trucks and gas stations, it seems to be relatively benign infrastructure. also, I think with distributed pv solar and wind, the power grid will become more distributed. And I think fair time-of-use might solve problems too.