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plug-in states and ghg

Discussion in 'Environmental Discussion' started by austingreen, Nov 11, 2012.

  1. drinnovation

    drinnovation EREV for EVER!

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    And if EV/PHEV drivers by more renewable, they'll make more.

    In terms of limited appeal, hybrids+EV are still less than 3% take rate, I dont' think GHG has much to do with mainstream appeal. You are welcome to your view of what a plugin needs, but there seem to be very few that share your views as "cleaner" (especially in terms of GHG) is not part of the legistation that pushed for PHEV credits nor does is play a major role in just about any national press about PHEVs.


    Actually you have not factual basis for the loss in the Energi being from weight. It is more likely that the loss in MPG and hence increase GHG emissions are from regearing to allow the Energi to do 85MPH in EV mode..


    The CMU study you cite is based on flawed assumptions about what the goals of the subsidies are, and does not even have a model of the Volt as part of it -- it only considers PSD and pure serial hybrid models. Furthermore the study, like you, use unweighted national grid GHG from 2007. That being said, I would not be surprised if its cheaper to not reduce GHG by using using smaller, or even no batteries. Heck, I pay extra for renewable, so I know it costs me more.
     
  2. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Leaf showed us that a 99 MPGe BEV is as green (230 vs 222 g/mi) as a regular 50 MPG Prius. If Leaf were to be driven only in the city, it can get 106 MPGe and that could actually beat the Prius. Leaf on the highway gets 92 MPGe so that's what is increasing emission.

    So for the short local city most frequent trips, using EV miles is great because it lowers the emission and you only need a small battery. PiP actually gets about 117 MPGe in the city cycle because it doesn't weight as much as the Leaf. However on the highway, the 49 MPG gas engine can't be beat.
     
  3. austingreen

    austingreen Senior Member

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    There were two companies in the room when the incentives were passed. Those were gm and toyota. Both tried to pass the largest incentve for the car they wanted to build anyway. That is why the max credit was based on GM's size, and the minium was lowered to toyota's size. Everything else is just a fairy tail. Toyota did a lot to create the Japanese incentives that favored it too. Let us not be in denial about toyota's goal here.

    The government's goal was to nurture a technology that would reduce gasoline usage. Lke all government programs it is not optimal. It had the pacs from GM and Toyota moving it.

    Well we can agree on that. They used an existing platform designed for a small battery. Please stop with the foolishness that it is optimal for efficiency. I fully expect the redesigned prius phv to have a larger range. The c-max took the trade off for range instead of cargo space. It used an existing vehicle too. If it were designed from scratch to be a cuv phev it would have been longer with better aerodynamics and more room for both cargo and batteries.:) Both companies tried to do their best trade offs with existing vehicles.

    I'm not quite sure what the point is here, but it appears to be pure sophistry. Toyota doesn't want to sell you a phv in most states, so that will definitely have limited appeal say in florida, texas, ohio, illonois, where people want to buy plug-ins and often buy renewable electricity also. Most that buy plug-ins do not rank ghg high on the list, but those that do often buy renewable electricity. I don't think the leaf sells badly in WV because it produces more ghg than a prius, I don't think people in west virginia without solar care about ghg.

    This seems like a misinformed goal given the sales distributions of cars. Doesn't the volt produce lower emissions than the prius phv on weighted average where it is sold?


    There are two things wrong here. You are still using average electricty, instead of weigheted average and those numbers I pumped out were for 2007 we are cleaner now. When you look at likely sales the energi will be lower. The other problem is if these folks are self selected they care about using less gasoline, so not only will they use less gasoline but those that care about it will produce less ghg also. It is unlikely battery weight decreased much highway mileage where we will going most of the time. It is likely an artifact of the epa testing procedure where the hybrid used its battery better, but the energi was fully depleted. Still there may be a small hit. YMMV. Short trips will not hurt the energi's mpg.
     
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  4. usbseawolf2000

    usbseawolf2000 HSD PhD

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    You have a point there and I agree that it may be a contributing factor. However, it is necessary to enable higher EV speed. The reason is that, if you are going further than 11 miles, you'll want to jump on the highway.

    Another reason is, C-Max Energi can complete the EPA highway cycle without starting the gas engine -- which gave a boost in MPGe and marketing opportunity.
     
  5. austingreen

    austingreen Senior Member

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    +1
    They still don't sell many plug-ins even with the $15K incentives. If that changes let me know.


    If more plug-ins are sold to use local coal, that doesn't seem to be a bad trade off.

    I would love to hear if plug in sales in wv are now up to 1%. That would help get the negative anti-plug-in politics out of it. I'm happy if WV and Kentucky get onboard the plug-in band wagon to reduce gasoline even if it does mean more coal in those states.
     
  6. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Nissan was not in the loop? Interesting.

    The bill was written and passed in 2009. The studies for the effectiveness of plugins just came out recently. What's wrong with adjusting it now that we know better?

    PiP has very little trade-offs (spare tire and price increase) and many trade benefits (cleaner, use domestic fuel, avoid short trip MPG, quiet EV ride, etc). Volt has so many trade-offs just for the name of more EV range (and using domestic fuel uncleanly).

    Determining how clean the car is one thing. It is another to weight it according to the sales. Both are not wrong, just different.

    Volt using average electricity will increase emission over a regular 50 MPG Prius. It is a good thing that people in the states with dirty electricity are not buying Volts. It has potential to be a disaster in the environmental engineering (or the lack of). That's where I am calling out as fail and hope they improve it in the next gen.
     
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  7. austingreen

    austingreen Senior Member

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    The amounts were written in law in 2008, so yes we have learned a lot. In 2009 the number of vehicles were increased.

    Nothing wrong with making the law better now. Suggestions have been to make the money an instant rebate so that the consumer doesn't need to fill out the tax forms, and to increase it to $10K maximum. Neither are bad ideas, but there are also moves to kill the credits completely. Given how bad congress has been doing lately, and the bigger financial cliff looming, I don't think improving this law should be high on the priority list.



    Again I don't want to make this a thread about one plug-in versus another. There are numerous threads about that, and all the plug-ins have trade offs.

    It all depends on what question you are asking. If you are asking how with this vehicle impact my carbon footprint, an individual should take their own likely driving habits, utility, and choice of renewable or regular plug power. The national average whether weighted by sales or not should have nothing to do with that calculation. Other considerations about the car such as limited range, cost, comfort, handling, acceleration, etc come into play and may be much more important than ghg.

    If the question is how does this vehicle affect ghg for the country then sales weighted averages are appropriate if you have the data. Even sparse data is better than just taking the grid as a whole.

    I am not sure what disaster you see happening. Less than 4% of new cars are plug-ins or hybrids, and the volt produces a lower carbon foot print than many of them. So let us say the volt is only cleaner than 97% of new cars sold today. Would increasing its sales, or even the sales of the fisker karma - the highest ghg plug-in - mean disaster. Or would it mean a step in the right direction?
     
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  8. wjtracy

    wjtracy Senior Member

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    ..this sounds like Toyota is drinking at the US federal subsidy trough just like everyone else, and I do not think that is necessarily fair. If I could paraphrase US Congress HEV/PHV/EV policy, it would be something like: how to give $billions in US gov't subsdies to automakers other than Toyota to help them compete more effectviely against Toyota. Of course, I am thinking about the subsidies/incentives given to the car buyers to help them buy an elec car of some kind. If we could have GAO tell us what % of electrified car purchase cost was defrayed by US govt, Toyota would be tiny number per vehicle and absolute number also limited by Congress who is trying to spread the money around. USB is trying to argue for more focus on eco impact and less focus on highest subsidies to cars that use the most electricity.
     
  9. austingreen

    austingreen Senior Member

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    I don't want to get political here, but the point of the subsidy is to develop technology for plug-in cars. That is without borders. The program was not about american competitiveness like PNGV, that failed to provide fuel savings but excluded foreign manufacturers except Mercedes. PNGV seemed to have backfired on the american competitiveness front:(

    Now Toyota did get the most money from cash for clunkers which was a jobs program. I don't know why imported cars from Japan were included there. They definitely did not help keep US companies from bankrupcy, and the Japanese program was written to not include cars imported from north america. That seems like the program was just a check written by the tax payers to big auto companies.

    If you are trying to incubate bev and phev technology including batteries and fast charging giving everyone buying a nimh prius money makes no sense at all. Some here don't like the idea of plug ins or the US government simulating demand. That is something for FHOP, and I have said my piece on it before. Remember if you are focusing on low emissions as they have in Japan, fewer plug-ins get sold and the program is many times more expensive.
     
  10. wjtracy

    wjtracy Senior Member

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    ^^^ C4C doesn't count!
    Congress made the mistake of requiring higher MPG car and so scales tipped to foreign cars.
    EU version of C4C did not put the higher MPG requirement on there. In any case it was a highly disorganized program here (C4C).
     
  11. SageBrush

    SageBrush Senior Member

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    Ford did pretty well by C4C, as did all the US dealerships where models Americans wanted were sold. Excluding foreign brands would have led to a much smaller scale C4C.
     
  12. hill

    hill High Fiber Member

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    Is CA electricity that carbon free? Seems like they buy a bunch out of state. That means power is no cleaner than the coal or natural gas that fires the steam plant in AZ or other parts, right? I know the states that CA buy from are cleaning up their act - but by the same token - it's not exactly fair to tout CA as being as green as they'd like to appear.
     
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  13. wjtracy

    wjtracy Senior Member

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    C4C was fun...in preparation, we visited many dealerships of all kinds of cars.
    The next thing we knew the program was over almost before it started and we had to rush into a purchase.
    Hey I like subsidies as much as the next guy (probably more).
     
  14. usbseawolf2000

    usbseawolf2000 HSD PhD

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    I said disaster in environmental engineering. There are 10 states (IA,MN,ND,NE,SD,WI,IL,MO,KS,CO) where Volt's emission is over 300 g/mi (about 37 MPG). In those states, it would be cleaner to run Volt with gasoline because plugging it in would increase emission. That's a disaster for a car that won "Green car of the year" award.


    Comparing Volt to a non-hybrid is quite a low standard. Why not compare it to a regular 50 MPG hybrid? Nissan Versa automatic is rated 35 MPG combined with emission rating of 317 g/mi. Volt is about as clean as Versa in those 10 states.

    In my opinion, electrification is a step in the right direction, only if it does not increase emission (over standard bar). If we increase emission with the excess level of electrification, we'll just have a hollow victory (not a good return for $7,500 taxpayer dollar).

    A well designed plugin needs to take the grid carbon intensity into consideration -- not just range or battery size.
     
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  15. austingreen

    austingreen Senior Member

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    Yes, I agree completely here. In fact other states may pretend to sell them their cleaner electricity, but.... Even with the imports california is only about 8% coal.

    My point was a user like you that buys a leaf and solar will really have a low carbon footprint for your car. If you charge at night then you are using most combined cycle plants in California. When your solar is going on the grid during peaks your are offsetting peaking power plants and power coming from other states. It does not make you go to zero, but solar + leaf is much lower than prius + gasoline in ghg.

    IMHO CA could do much better with better regulation. They would drop real co2 by quickly building quick cycling ccgt plants that are compatible with solar. That would eliminate teh 8% of coal imported and many peaking plants would operate less, dropping the cost of electricity and ghg. This does not mean that california is not doing much better than states like west virginia or indiana.
     
  16. drinnovation

    drinnovation EREV for EVER!

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    And it would be better for GHG if everyone would ride a bicycle rather than than drive a car.
    It would be better if I bought gas refined from sweet light crude rather than Tar sands -- which is what we get in CO, so the GHG emissions for our "gas" are 10-15% higher than average too.

    The volt gives owners in those states the option to run off of electricity, which given them the option to shift to renewable. If they don't care about GHG, then they don't care about GHG and probably are not buying a car to be green. If they care about GHG, they can buy renewable. It would be an environmental disaster only if they HAD to pollute.

    If they bought an EV/PHEV to shift away from oil to keep money in america, or for the quality of the drive, thenthey may be producing more GHG using electricity, but probably still less then the other cars they would likely be driving, such as a BMW or Caddy. Why not compare to a 50MPG hybrid (Prius)? Because many of the people driving a volt for non "green" reasons would never buy a prius! If they are "buy american" types, of which there are many in CO, they might consider a Ford, but not a Toyota. If they are "quality" buyers, then maybe a BMW/Caddy maybe a lexus -- but not a prius.

    So if they care about GHG, then can do much better than a 50MPG hybrid. If they don't care about GHG, at least the Volt got them to reduce compared to most of the choices they would likely make.
     
  17. austingreen

    austingreen Senior Member

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    When you talk about bad subsidy programs, how to get it wrong, you can't really ignore cash for clunkers. It cost $2.85B in 7 months, much more than the plug-in subsidies will cost for many years. It failed to help employment because it was short lived, and mostly gave people money to buy cars they were going to buy anyway, or pulled sales forward to reduce future sales. It is estimated that it cost between $8K-$25K per real new car sales in the period. Nothing wrong with the mpg requirement, except it was too low to really make this an efficiency program. If it was a jobs progarm, like it was suposed to be instead of corporate welfare for toyota and gm, then imported cars should have not been included.
     
  18. hill

    hill High Fiber Member

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    is there really such a thing as an imported car now days? There are always sub assemblies of cars/trucks ( from side view mirrors to entire engines) made in other countries, China Mexico Canada - how do you calculate what made in America technically is ... cash for clunkers laws would have had to state a percentage of being made in the USA ....
    Quite a few cash for clunkers recipients ended up buying SUV's under the program too. I never figured out how that was supposed to raise our nation's fuel economy standards.

    SGH-I717R ? 2
     
  19. wjtracy

    wjtracy Senior Member

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    I agree totally with you, but cleaner environment is not the stated goal of Congress.
    The goal is energy security and reduced dependence on imported oil.
    There are some like me (and author Robert Bryce and Cato Inst Jerry Taylor) who do not agree that energy security necessitates stopping oil imports, but pretty much every President since Richard Nixon have villified oil imports as Public Enemy No 1 or 2. Where I think EVangelists may be making a PR mistake is implying EV is way cleaner too, the risk is the public senses part of the EV message is misleading hype (politics as usual).
     
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  20. austingreen

    austingreen Senior Member

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    You probably should think of engineering goals and outcomes before analysis. The volt was engineered to use less gasoline, not to produce fewer ghg. You are adding your own goal, and putting it above all the others. Then even with your own goal, many in those states can buy renewables if there goal is to reduce their carbon foot print.

    Finally what car are you comparing. Lets look at some toyotas.
    Compare Side-by-Side
    346 for the smallest yarris
    573 for the sienna
    739 for a 4wd tundra
    Now if the volt is a ghg disaster, toyota needs to stop selling these vehicles right now..... Or maybe you are just inserting drama here. That for the bottom 10 states, only one of which even buys many volts, you need to buy renewables for a volt or leaf or prius phv to have lower ghg than buying a prius. BTW the prius doesn't sell well in 8 of those states also.


    And in the country the volt likely produces around 215 g/mi much less than a versa and it uses a lot less gas too. Why would anyone focus on states that are only a small percentage of sales?


    But here you are rigging the test. If selling a leaf or tesla or volt reduces them for the country, why should we care that we have states with high ghg electricity. THat should not prevent the sales of plug-ins. Waiting for the worst states is just a false choice.

    Well I absolutely disagree with you here. The grid is the grid and it changes slowly. Plug-ins will last a long time. You propose to lock us into a future of gas shortages simply because in hand picked states, where plug-ins don't sell well, todays electricity is slightly more carbon intense on a plug in, than the very best gasoline car in terms of ghg. That is a false choice.