• silence7OPM
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    3 months ago

    The alternatives to 100% EVs is no cars or a real chance of killing a few billion people.

    Physics makes the final call.

    • dragontamer@lemmy.world
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      3 months ago

      Filling your future economy with Hummer EVs will cook the earth faster my man.

      9000lb EVs are worse for the environment than Prius. We need to have the correct regulations if you actually want to improve the world. All of that Hummer EV electricity is going to come from coal + natural gas, and with 3x the weight and like 4x the drag compared to a Prius, its going to literally burn more carbon and wreck the world faster.

      If you can’t see that, then you’re an extremist EV fan who is beginning to literally hurt the environment with insane decisions.


      Speak truth to power. And the truth is… some EVs are very, very, very bad for the environment. We need proper rules/regulations that truly improve our environment. Not just EV fanbois running the show.

      • silence7OPM
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        3 months ago

        I’m far from an EV fan. We’re better off with a lot fewer cars in addition to electrification of those which remain.

        I’m just more of a fan of a civilization-supporting planet than burning fossil fuels. And that’s a physics-driven choice, not one constructed for ideological reasons

        • dragontamer@lemmy.world
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          3 months ago

          And that’s a physics-driven choice

          Hummer EV. I’ve said it before, I’ll say it again. Hummer EV is worse for the environment than the typical ICE car, by huge margins.

          If you don’t get this right, you’ll end up hurting USA (and the world) more than you think. That’s just physics. Sending 9000lb cars around with huge profiles with Coefficient-of-Drag in the 0.5+ range will eat up our energy and burn more coal/natural gas than any more reasonable car (even traditional ICE cars like Chevy TRAX).

          That’s just physics. And organizations like ACEEE + Argonne National Labs are busy calculating / number crunching these statistics. Random assertions aside, pure EV is worse than many other possible regulations we could be doing. (In particular, encouraging the most efficient vehicles regardless of technology).


          EVs in particular are going to be natural-gas powered for the near future. Fortunately Nat. Gas is 60% thermal efficiency rather than 30% (of typical ICE), but your margin for efficient vehicles is much smaller than you might expect. And there’s probably Coal-plants (~30%) that’d drag down the efficiency of our energy grid in practice anyway.

          You have to look at this problem holistically. Randomly just white-knighting EVs all day every day is going to lead to more environmental problems.

          • silence7OPM
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            3 months ago

            If we actually succeed, we end up with a decarbonized electric grid too, and the big EV’s emissions drop to zero.

            I do agree that huge vehicles should be discouraged for personal transport, but that’s for livable-cities reasons, not climate.

            • dragontamer@lemmy.world
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              3 months ago

              Hummer EV is literally worse for the climate.

              This isn’t even some “theory” I’m trying to show you. Its real. This is a real vehicle that’s causing more pollution right now in our country and world to measurable effects.

              If we actually succeed, we end up with a decarbonized electric grid too, and the big EV’s emissions drop to zero.

              Lithium is made by pouring acid down mountains and collecting the acid that leaks out. There are incredible environmental effects you need to account for in the creation of EVs, even if we had a 100% decarbonized grid.

              In fact, a 100% decarbonized grid would likely favor H2 (Hydrogen) vehicles since those have fewer environmental effects in the production process. And H2 can be made out of just electricity and water.

              • silence7OPM
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                3 months ago

                The number of hummer EVs being built is tiny.

                You’re concern trolling at this point.

                • dragontamer@lemmy.world
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                  3 months ago

                  Hummer EV is just to make you think about your stupid argument. Here’s my real argument:

                  https://www.aceee.org/greener-cars

                  Prius is literally better than EVs for the environment. You can’t get rid of these hybrids, they’re surprisingly good for the environment.

                  Banning the #1 best vehicle for the environment because they don’t conform to your “insane” idea of environmentalism is stupid. Actually run the math, actually calculate the environmental effects of various metals and the real world turns out to be more complex than braindead “duh go EV” arguments.

                  You have to run the math, its not as easy as it looks to make good environmental decisions.

      • nxdefiant@startrek.website
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        3 months ago

        There are plenty of sensible EV options, both cheaper and better than the $120,000 Hummer EV @ 9000 pounds. Actually, pretty much literally every other non commercial EV is better. That said, even the Hummer EV is still about 50% better than its ICE equivalent.

        • dragontamer@lemmy.world
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          3 months ago

          There are plenty of sensible EV options, both cheaper and better than the $120,000 Hummer EV @ 9000 pounds.

          And all of them are less efficient than the 2024 Prius Prime for our environment. (See my ACEEE citation from above). Literally all of them.

          You’re underestimating the efficiency of Prius, much like other EV fanbois. Prius is the most environmentally friendly vehicle today, even beyond small / efficient EVs like the Nissan Leaf or the GM Bolt.

          The best vehicles for the environment is the Prius Prime PHEV, and #2 is Prius Hybrid. Other cars like Accord Hybrid, Camry Hybrid, and Corolla Hybrid are in the top 10.

          EVs can win and seem to have significant advantages. But not enough to make the #1 slot. For EVs to win you need a relatively small battery pack (ex: 40kW-hr Leaf), and relatively lightweight. The Prius has a 800lb+ advantage over most EVs (most EVs, even small ones like Nissan Leaf, are 4000lb behemoths, far above the 3200lb Prius).


          Yeah, EV Battery tech sucks today. Its still too heavy. Fortunately, 60% efficiency of large-scale Nat. Gas combination cycle plants magically gathers more energy than small ICE (like 40% Atkinson or 30% Otto Cycle engines), so EVs get some degree of advantage even when the grid remains highly Fossil Fuel based.

          But you still have weight + mining + other dirty issues (rare-earth metals for significant magnets on those motors…) that add up to bad environmental effects.

            • dragontamer@lemmy.world
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              3 months ago

              Corn Ethanol is solar-powered, as all the CO2 was absorbed from the air as the corn grew thanks to photosynthesis, and is largely compatible with ICE engines actually. Ideally we use Switchgrass Ethanol in the long term, when we need bio-fuels to replace fossil fuels. But there’s a lot of practical advantages to Carbon + Hydrogen bonds at the molecular level.

              Switchgrass Ethanol is possible but not commercially viable yet though. And Corn Ethanol has downsides (farmland is worse for our environment than natural prairies).

              There’s also Hydrogen -> Syngas -> Kerosene, a process of electrification to Hydrogen + CO2 -> Fuel.

              So you gotta keep your mind open to all the possibilities that science can provide, including chemistry.

              • nxdefiant@startrek.website
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                3 months ago

                In the U.S. alone, we’d need about 200 million acres of farm land to go from 10% ethanol to 100% ethanol. That’s using corn and accounts for about 25% of the total farmland the U.S. has. And that’s just the U.S. and only counts retail gas with the 10% mandate, - not industrial fuel use of diesel fuel use, which would increase it dramatically. It’s not feasible to run the country on biomass , especially as climate change is going to make farm land less viable overall. Given that agriculture is already roughly a third of all carbon emissions, massively ramping up agriculture to replace fossil fuels doesn’t really help overall.

                On top of that, we need to start sequestering CO2. Moving it from the biomass into the air, even temporarily, keeps it in the air where we do not want it! The only viable long term solution is to move net amounts of carbon out of the air by all means possible, as well as minimizing all the other greenhouse gas produced (like methane). ICE engines cannot be a significant part of this future without ramping up clean energy use elsewhere to sequester more carbon than those fuels are contributing - which leads right back to solar and fission. (and wind, waves, geothermal etc of course).

                • dragontamer@lemmy.world
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                  3 months ago

                  That’s using corn

                  Okay, recalculate using switchgrass. Corn is not the end-all be-all of biofuels. Switchgrass is the next step. After all, yall are pretending that “fusion” is on the table, so I’m allowed to pretend in magic future tech for my arguments as well.

                  And if we both are pretending in today’s technology, then we have to remember that most EVs are run on coal+natural gas today and account for significant emissions of CO2.

                  Switchgrass is not “farmland”, its the natural prairie / natural state of the USA’s original land usage. Its significantly more efficient than farmland and will be resistant to future climate issues. The switchgrass refineries have been proven btw, its just a matter of investment today to bring Switchgrass biofuels to the mainstream.

                  • nxdefiant@startrek.website
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                    3 months ago

                    Ok, so convert 25% of all U.S. farmland at a minimum to a completely new crop. That’s sure to be carbon neutral 🙄. What should the other 7.7 ish billion humans do?

                    Burning things was always a bad plan, and continues to be a bad plan!

              • Ooops@kbin.social
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                3 months ago

                Corn Ethanol is solar-powered, as all the CO2 was absorbed from the air as the corn grew thanks to photosynthesis

                Nope, that’s bullshit. Biomass is only co2-neutral if it grows on its own and is used up on the spot.

                There’s also Hydrogen -> Syngas -> Kerosene, a process of electrification to Hydrogen + CO2 -> Fuel.

                So while I pay an amount X for electricity to load a battery you are wiliing to pay 5 times as much for eFuels just to support your strange political views? That’s in some way commendable…

                So you gotta keep your mind open to all the possibilities that science can provide, including chemistry.

                Even an open mind can’t cheat thermodynamics

                • dragontamer@lemmy.world
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                  3 months ago

                  So while I pay an amount X for electricity to load a battery you are wiliing to pay 5 times as much for eFuels just to support your strange political views? That’s in some way commendable…

                  Go figure out a better path of electrification of the large 737 airplanes.

                  Go on. I’m waiting. Kerosene is 100% compatible with airliners.

                  Even an open mind can’t cheat thermodynamics

                  100% renewable electricity is a pipedream. The “mouth” of that graph is bullshit. Today we’re still using coal + natural gas for the majority of the grid.

                  You’re also ignoring the gross amounts of pollution that EV Batteries emit during production. H2 and ICE are made of far simpler, and more efficient, materials. You’ll need substantial numbers of batteries to power the world at night as well (IE: an impossible number as no battery technology can handle daytime-charge vs nighttime usage of the USA).

                  You can’t cheat impossibility. The assumptions of that graph are already impossible and you know it.


                  EDIT: The real advantages to H2 are multiple fold:

                  1. Hydrogen is energy storage. You can store H2 for months in various forms. Solar does not have any energy storage and needs to be factored separately.

                  2. Clean Hydrogen is needed to clean up our food supply. As you might know, our food supply relies upon ammonia / fertilizer made from fossil fuels right now. This isn’t necessary, H2 -> Ammonia is a well known and well proven path, and seems to be the only way to electrify our nitrogen-fertilizer production.

                  3. If we are already mass producing clean H2 (for #2), then #1 becomes cheap, and then we might as well use it for transportation as well to help spur investments and consolidate resources.

                  • Ooops@kbin.social
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                    3 months ago

                    Go figure out a better path of electrification of the large 737 airplanes.

                    Why would I when we were talkiong about cars? Sure, you will need some synthetic fuel for air travel. But if you want to pay the same sums to power your car, when you could do it for a fraction of that cost that’s still stupid.

                    H2 and ICE are made of far simpler, and more efficient, materials.

                    No, you can actually build batteries from very simple materials that are far more efficient that fuel production and then burning it (both times with a huge loss). Just because the world focussed on lithium-ion batteries in the last decades (because of small portable devices where energy density was key) and thus used what was already widely available for cars in the beginning, rare materials for car batteries are not actually a requirement.

                    You’ll need substantial numbers of batteries to power the world at night as well (IE: an impossible number as no battery technology can handle daytime-charge vs nighttime usage of the USA).

                    That also a big nope. In reality solar and wind can power the world through the day, wind can power the world through the night. The only storage needed for a day/night cycle is a small fraction fo the prodcution. Just enough to shift parts of the production peaks at the afternoon and in the middle of the night ~5 hours forward to the consumption peaks in the evening and early morning.

                    And don’t let me even start with how cheap you can produce massive batteries if you don’t care for energy density at all because no one gives a fuck if the warehouse-sized installation for your town or city district is 20% bigger and a few tons heavier. Quite the opposite actually… Li-ion batteries nowadays are incredible bad for such a task. We accept their bad thermal properties in our smartphones and laptops, in cars it’s already a drawback that prompted the development of other materials that are already serial produced. For fixed storage they would basically be a unneccessary fire hazard.

                    The real advantages to H2 are multiple fold

                    The real drawback of H2 availability. You lose energy to produce it. You lose more energy when you consume it. You will never see cheap H2 as the production is just too inefficient, so there will only be demand in sectors that simply cannot be electrified (air transport, some industries) as well as in chemical production as a raw material and for long-term seasonal storage.

                    Again… if you want to compete with high-energy demanding industries for the gas to power your car, that’s your decision. Everyone else will use batteries for less than a ¼ of the cost. If your ICE is worth it for you, go for it. But don’t pretend that the world will collectively decide to use a mode of transportation needing 4-5 times as much energy just for laughs and giggles.