Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
×
Power Transportation

In the US, Life Cycle Emissions For EVs Are Already 60-68% Lower Than Gasoline, Study Finds (arstechnica.com) 288

An anonymous reader quotes a report from Ars Technica: Today in the US market, a medium-sized battery EV already has 60-68 percent lower lifetime carbon emissions than a comparable car with an internal combustion engine. And the gap is only going to increase as we use more renewable electricity. That finding comes from a white paper (PDF) published by Georg Bieker at the International Council on Clean Transportation. The comprehensive study compares the lifetime carbon emissions, both today and in 2030, of midsized vehicles in Europe, the US, China, and India, across a wide range of powertrain types, including gasoline, diesel, hybrid EVs (HEVs), plug-in hybrid EVs (PHEVs), battery EVs (BEVs), and fuel cell EVs (FCEVs).

The study takes into account the carbon emissions that result from the various fuels (fossil fuels, biofuels, electricity, hydrogen, and e-fuels), as well as the emissions that result from manufacturing and then recycling or disposing of vehicles and their various components. Bieker has also factored in real-world fuel or energy consumption -- something that is especially important when it comes to PHEVs, according to the report. Finally, the study accounts for the fact that energy production should become less carbon-intensive over time, based on stated government objectives.
The life cycle emissions of battery EVs in Europe today at 66-69 percent lower than a comparable gasoline-powered car. China is at 37-45 percent fewer emissions for BEVs, and India shows 19-34 percent.

As for fuel cell EVs (FCEVs), they "are only abut 26-40 percent less carbon-intensive than a comparable gasoline vehicle," notes Ars. "But if hydrogen was produced using renewable energy rather than steam reformation of natural gas, that number would jump to 76-80 percent -- even better than a BEV's numbers."
This discussion has been archived. No new comments can be posted.

In the US, Life Cycle Emissions For EVs Are Already 60-68% Lower Than Gasoline, Study Finds

Comments Filter:
  • Only gets better (Score:5, Insightful)

    by Gravis Zero ( 934156 ) on Monday August 02, 2021 @10:39PM (#61649095)

    As times goes by and each of the processes for constructing an EV reduces it's pollution, making EVs will pollute even less. As our electrical grid shifts to cleaner and renewable sources then charging EVs will cause less pollution.

    If we want to speed up that process then we need a pollution tax to force companies to either be better of cough up the cash needed to clean up their mess.

    • by im_thatoneguy ( 819432 ) on Monday August 02, 2021 @10:46PM (#61649097)

      Yeah, battery EVs are like Mr Fusion. They'll run on literally any power source we can invent.

      They're the perfect apocalypse vehicle. Have a stream? Recharge from a water wheel. Have wind? Power from a windmill. Have solar? Power from solar. Have a gas generator? Power from the generator? Have wood chips? Power from wood chips.

      Not quite as clean and compact as Mr. Fusion on back to the future but with the necessary generator it accomplishes the same thing.

      • They're the perfect apocalypse vehicle.

        That depends a lot on the apocalypse. According to Hollywood's instructional material, using your fuel to make Molotov cocktails is quite effective against zombies. I do not think throwing a battery at them will be quite as good, well unless perhaps it's one of Samsung's.

        • Re:Depends (Score:4, Funny)

          by fazig ( 2909523 ) on Tuesday August 03, 2021 @02:00AM (#61649407)
          Not necessarily.
          In the case of an apocalypse we're likely going back to more primitive batteries which can be constructed with the materials at hand, making Lithium based batteries an relic of the past. Those more primitive batteries mainly used caustic things like acids as their electrolyte. Your regular car battery for example uses sulfuric acid.

          Now the question that remains is how vulnerable zombies are to acid. If they're anything like the common Forgotten Realms troll, they can be destroyed by both fire and acid.
        • Re:Depends (Score:5, Funny)

          by serviscope_minor ( 664417 ) on Tuesday August 03, 2021 @05:14AM (#61649849) Journal

          I do not think throwing a battery at them will be quite as good, well unless perhaps it's one of Samsung's.

          That's a pretty sick burn.

        • I don't know what zombie movies you watch, but fire seems like the worst weapon to use.

          Fire kills people mostly through asphyxiation, followed by redistribution of fluids in the body (hematomas and blistering). Zombies are already dead so they can't suffocate or bleed to death, at least in most versions.

          Fire stops humans due to excruciating and debilitating pain, but it's not clear if pain is something zombies experience at all, let along to the point of debilitation.

          *Eventually* the fire will cook the fle

    • Its called carbon credits. Car companies who dont produce enough ZEV vehicles have to pay Tesla to buy credits. This is what is driving the adoption of EVs to a certain extent
      • Its called carbon credits. Car companies who dont produce enough ZEV vehicles have to pay Tesla to buy credits. This is what is driving the adoption of EVs to a certain extent

        The best way to think of this is a bit different. The car companies get permission to dump their CO2 in your back yard; however it's difficult to tell which CO2 belongs to who. Instead of making you collect the money for the use of your trees, which would be difficult and confusing, the government is responsible for collecting this money but they aren't doing a good job yet. Right now the car companies get this extra extra cheap, massively subsidised. Tesla doesn't use this resource nearly as much as ot

    • by Tom ( 822 ) on Tuesday August 03, 2021 @04:43AM (#61649795) Homepage Journal

      If we want to speed up that process then we need a pollution tax to force companies to either be better of cough up the cash needed to clean up their mess.

      We've known that for half a century. Externalized costs and all of that. It's just that the people who make a lot of money by not paying for all theirs costs are spending a small part of that money to buy the politicians who make those decisions.

  • by cats-paw ( 34890 ) on Monday August 02, 2021 @11:47PM (#61649219) Homepage

    the amount of repair work that can go into an ICE can be crazy. water pumps, fuel pumps, head gaskets, etc...

    i bet that the emissions and expense of those repairs if you want to keep your ICE for 300k km really adds up.

    sure it's cheaper than a new vehicle, but the maintenance /repair cost on an electric vehicle will be _much_ lower.

    • by dogsbreath ( 730413 ) on Tuesday August 03, 2021 @12:18AM (#61649275)

      Yes. No more EGR valves. No more head gasket failures. No OHC timing belts. No valve interference when the belt snaps. ... but proprietary everything in the vehicle, and they all call home. 666 baby! Sorry, joking. Sort of.

    • Re: (Score:3, Insightful)

      by gravewax ( 4772409 )
      if you want your EV to last 300k km you will save on maintenance but that will probably be replaced by doing a very expensive battery replacement.
      • by shilly ( 142940 ) on Tuesday August 03, 2021 @02:06AM (#61649417)

        That's not true. Look at the maths.

        A typical new EV will have a range of about 400km (250miles). My 2020 Renault Zoe has this, for example.

        300k km / 400km range = 750 discharge cycles.

        EV batteries are expected to have 500 to 1500 discharge cycles before range reduces to 80% of the original. 750 is well within that. For example, there are 2013 Zoes being driven with 97% state of health (and their original range was only 90 miles to start with). BMS and active cooling are impressively effective.

        And of course 80% of 250 is 200, which is still plenty for lots of people.

        Finally, EV battery prices will continue to fall significantly for many years to come. Scale economies haven't really kicked in yet. So the replacement will be a lot less expensive in 10 years than its theoretical cost today, and it's going to be 10+ years before it needs doing

      • How many vehicles actually get to 300k km in the ICE world? very minimal. There are already taxis out there with 300k-400k mile on their batteries and still have sufficient state of charge to be practical
        • I'm pretty sure they aren't taxis, they're nonauthorized Uber vehicles, so much smaller known fleet. But yes at 300-400k miles they still have most of their battery life. So figure that in the time it would take a Toyota Camry to need one or two transmission rebuilds, and probably an engine rebuild, (lets see, uh-huh, carry the 1, yep yep yep) which comes to about $15k, yes a tesla might need a new $15k battery, IF you need the full range. Difference is that the Tesla has paid for new batt by fuel savings a

          • I currently have an old ICEV and am going to get an EV for my next car. I'd get a Model 3 but Teslas are a bit fancier than I want. What is Ford doing? I've not read about them -- the only long-range EV's on sale now in the USA from what I understand are the Bolt and the Teslas.

            • EVs that I know are available in the US that cost under $50K, with EPA estimated ranges > 200 miles; unfortunately I can't say if these are available in every state or not without a lot of digging I don't care to do right now...

              Volkswagen ID.4 (250 miles)
              Ford Mustang Mach-E (300 miles)
              Kia Niro EV (239 miles)
              Chevy Bolt (259 miles)
              Hyundai Kona Electric (258 miles)

              Details for the F-150 Lightning are a little hard to come by but it looks like the base model would also make it to the list if it were available

    • i bet that the emissions and expense of those repairs if you want to keep your ICE for 300k km really adds up.

      It's clear that the general day-to-day maintenance of an EV is a lot less than an ICE but you'll probably need a complete battery replacement at least once in an EV to make it to 300k km (~10 years @ ~15,000 km/year) and the emission and expense of that will be quite large (~US$13-14k for a Tesla based on a quick Google search). Hence, without a more detailed analysis with better data, I'd not like to guess which one is cheaper/better from a maintenance aspect.

    • the amount of repair work that can go into an ICE can be crazy. water pumps, fuel pumps, head gaskets, etc...

      Try fixing a decent fender bender on a Tesla if you want to see what "crazy" repair costs look like. It can make a transmission rebuild, look cheap. Gotta love sensors for sensors sake. Oh, and look forward to your $10K mandated battery swap. You know, for "safety".

      i bet that the emissions and expense of those repairs if you want to keep your ICE for 300k km really adds up.

      sure it's cheaper than a new vehicle, but the maintenance /repair cost on an electric vehicle will be _much_ lower.

      My smartphone is _much_more waterproof than models of 10 years ago.

      Sadly, it's also obscenely more expensive. Not unlike EV cars today. Between that and $5,000+ fender benders, don't hold your breath on who's ultimately "cheaper" for the c

    • by kick6 ( 1081615 )

      the amount of repair work that can go into an ICE can be crazy. water pumps, fuel pumps, head gaskets, etc...

      i bet that the emissions and expense of those repairs if you want to keep your ICE for 300k km really adds up.

      sure it's cheaper than a new vehicle, but the maintenance /repair cost on an electric vehicle will be _much_ lower.

      Plot twist: Teslas have a water pump and coolant to cool the battery pack too.

      • Right, but the ratio of waste heat to mechanical work done in a Tesla is an order of magnitude less than in an ICE.

  • by mykepredko ( 40154 ) on Tuesday August 03, 2021 @12:30AM (#61649297) Homepage

    As usual there are people here who vehemently feel that going from ICE to BEV is a step in the wrong direction.

    But imagine if the situation was reversed; we had an established base of battery powered electric vehicles and infrastructure but there is a desire to go to internal combustion engines.

    The questions the naysayers against going to ICE will be making are:
    - The people who have the best oil for fuel are who? Is it in our best interests to give them our money?
    - People can buy futures in oil, doesn't that mean that they can manipulate prices and make it more expensive for people owning cars just because they're greedy?
    - We're going to have to ship oil around the world, do you know how big the ships will have to be to do that? Once we get oil here we're going to have to build thousand mile long pipelines or move it in trucks or trains. Can you imagine the expense?
    - When we burn the fuel, we're putting carbon dioxide, carbon monoxide and nitrogen oxides into the air?
    - Gasoline/benzine by itself isn't that great but to make it better you want to add lead?
    - Gasoline is explosive, you seriously think I'm going to put something full of it in the garage attached to my home?
    - Do you realize that we're going to have to create a network of "gas stations" every 20 miles or so across the continent? How long will I have to wait in line to get gas?
    - Gasoline engines wear out? You mean if I want to keep the car more than a few years I am going to have some big bills to fix the engine?
    - Hold it, you start a gas engine by turning a crank? If you're not careful it can break your arm? But there's somebody called Chuck Kettering who's designing an electric starter and it will add how much to the cost of the car?

    I don't know if people just don't like change, are contrary by nature but the world changes and evolves - get used to it.

    • - Gasoline is explosive, you seriously think I'm going to put something full of it in the garage attached to my home?

      This one actually makes me laugh every time someone says how dangerous and flammable batteries are.

      • I have been on the road when a car fire reached its gas tank. It was fucking *impressive*.

        Let's see, gas has an energy density of 45 MJ/kg, multiply by the mass in the tank, carry the 2, you get a really fucking big pillar of fire.

    • As usual there are people here who vehemently feel that going from ICE to BEV is a step in the wrong direction.

      But imagine if the situation was reversed; we had an established base of battery powered electric vehicles and infrastructure but there is a desire to go to internal combustion engines.

      The questions the naysayers against going to ICE will be making are:

      -snip-

      This needs reposting in every /. electric vehicle thread.

  • by kaatochacha ( 651922 ) on Tuesday August 03, 2021 @10:43AM (#61650873)
    "The lifetime mileages used in this analysis were based on the average lifetime of vehicles registered in the investigated regions in 2021 and expected to be registered in 2030, in combination with annual mileage per vehicle age curves and average annual mileage data. The values are adjusted to the respective regions and vehicle segments but are considered to be the same for all powertrain types. The vehicles are considered to be used in the respective regions for their full useful life, with no consideration of their potential export as second-hand cars to other regions." Which is what, exactly?

A physicist is an atom's way of knowing about atoms. -- George Wald

Working...