Comments by "Archangel17" (@MDP1702) on "Engineering Explained" channel.

  1.  @robinbinder8658  Which country might that be? Because a country with a lot of renewable can't have EV's that are less green than ICE cars, unless you compare a very inefficient and large EV with a very efficient and small ICE (and even then it should be close). Even Poland with +-67% coal production at this moment would have 161g/mile (so 175g seems high). Ofcourse not only renewable share matters (for example Poland uses 18% renewable atm), but also the rest of the mix. Coal is really bad in terms of pollution, gas is already a lot better (+-1/3rd less pollution) and things like nuclear and renewables is where EV's shine ( coals is 20 times worse than solar, 80 times worse than wind and nuclear). In the EU EV cars aren't better when charged with coal, with gas turbines they are slightly better, but almost equal these days (better emission regulations) and thus are more or less equivalent to or sllightly worse than a gas car at end of life. When you don't use coal and have a large share of renewables/nuclear (30%+), it shouldn't even be close. Currently based on the overall EU grid composition, an EV would do around 73g/mile and of which around 54% is caused by coal, being phased out in the next 1-2 decades, no plans for new coal plants for so far I know, and 40% from gas power plants, which also should be phased out over the next 2-3 decades. In the US however ICE cars are overall that inefficient (in terms of emissions) that even coal powered EV's are better. According to the EPA the average passenger car emits 404 g/mile in the US (even higher than I expected, must be the number of trucks). Fully coal-powered EV's would emit between 190 to 325 (for EV vans, inefficient EV's) Considering that the grid will get greener every year and coal should (at least in many countries) dissapear more and more (in europe completely by 2035-2040 depending on the country) as well as gas power plants in the long run (20-30 years), EV's will get much cleaner, and on average are already cleaner.
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  2. Sure, but then they shouldn't claim it is faster over the 1/4 mile instead.
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  3. It really depends on your vehicle and how long you still drive. For example here he came to the conclusion that the ICE is actually worse after +-3 years, considering that the build emissions are a rather small part, driving an already built ice for 4-5 years or so longer would actually be worse than getting a new electric car.
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  4.  @robinbinder8658  Poland doesn't come so high, since they also import a lot of renewable power, overall Poland these days rarely comes above 530g/kWh. And seeing a good EV (like a Tesla model 3) can do around 4,2 miles per kWh, that makes 126g/mile, or even if we use the 730g/kWh, it comes down to 173g/mile. Again, this is mostly due to Polands reliance on coal, which will dissapear in the next 2 decades, making EV's by far the greener choice. An efficient EV does between 15 and 20 kWh/100km, however the average is ticked up by inefficient large EV's and electric vans. I guess the energy mix in your country still makes an ICE car still viable for the next 2 years (still don't know which country and I am really interested to know which country has lots of renewable, but still does 530g/kWh), though I am surprised an old ass car does only 120g/mile. Just to be clear, I am speaking in a theoretical sense, I am not saying anyone should abandon their old car and buy an EV (I still drive a 14 year old car, though likely not for much longer due to repair costs), that wouldn't even be possible now just due to a lack of EV's, the current price and charging infrastructure.
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  5.  @JackMott  Accelerates battery degradation of your vehicle to do that though, Not really that much. Even a full 20kWh draw a day (which already is significant and you'd never use the battery day in day out for all use, you also either use solar panels/and or grid during low demand and thus cheaper times) you still would only use the equivalent of around 60 miles, ie. what most people already drive in 2 days or so. And ofcourse you then just need to calculate whether that degradation is more costly or not vs having a seperate powerwall/battery installation in the longterm. Overall unless you have very high demand or an EV very prone to degradation, an EV with bidirectional charging will be more interesting than a battery system as a back-up system. However if you have solar panels a small battery system (like one powerwall or even smaller) might still be interesting in connection with PV panels, if feeding back into the grid isn't interesting. Or a small battery installation for the times the car is in use and only essentials (like your fridge, ...) need to be powered during a black out.
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  6.  @bluetyphoon2100  Isn't really a point. Time is money applies anywhere and this speed limit is consistent over (nearly) all Europe. This is more about safety than the size of a country. Germany has plenty of highways with no speed limit for normal cars, but they still limit their trucks speed to 90km/h. Now I can understand a higher speed limit for sections where there is no habitation/traffic for a long time, but statewide high speeds is something different. Most of the US pop live in area's with a population density similar to that of Europe btw.
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  7. If you have only used it 8 hours in 2 years, is it even worth it? At least an EV still can be used as an EV and a powerwall can be used to store excess PV production (ofcourse only if applicable). I'd argue you'd only want a generator (unless it is a very cheap and weak one) if you have regular black/brown outs counting to at least a few days a year, in which case the generator is more polluting, though could still be an option.
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  8. The 55mph speedlimit is similar to the 90 km/h speed limit (nearly) every country in the EU has, though for a semi with a trailer attached.
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  9. Not really since the acceleration is likely to slow down due to things like increased wind resistance and other factors
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  10.  @Jtretta  The question would come when an EV with bidirectional charging costs 20-25k whether it might not be better to just buy a second car and use it as a near-stationary battery? If it is as expensive as for examples 3 powerwalls with a similar capacity, why go for the powerwalls and not a more multifunctional system? Afterall this EV can then still be used as a car when truly needed, your powerwall couldn't. Though you'd need to take into account taxes and insurance etc though, and ofcourse the space needed. I guess the future will show what will be best, a hybrid system of a small home storage battery coupled with a bidirectional EV might be the thing. If they can get the self driving cars going, your car could just go home during the day and plug in at home too, though we are still far from that at the moment.
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