This analysis is fascinating: it breaks down how when you fill up a petrol car most of the energy never moves it.
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This analysis is fascinating: it breaks down how when you fill up a petrol car most of the energy never moves it.
Petrol car: 13–21% of the crude oil's energy reaches wheels.
Electric car on today's UK grid: 43–45%.
Electric car on wind+solar: 77–80%.
via Jan Rosenow, Professor of Energy & Climate Policy at University of Oxford
@Natasha_Jay ok, that's a really interesting infographic.
Thanks for sharing
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This analysis is fascinating: it breaks down how when you fill up a petrol car most of the energy never moves it.
Petrol car: 13–21% of the crude oil's energy reaches wheels.
Electric car on today's UK grid: 43–45%.
Electric car on wind+solar: 77–80%.
via Jan Rosenow, Professor of Energy & Climate Policy at University of Oxford
@Natasha_Jay Then do the same for moving a *person* rather than a *car*, and include an e-bike comparison.
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It should be noted that the huge drop in petrol cars' efficiency when it reaches the engine and dissipates into heat is NOT going to be improved much upon. There is a fundamental physics limit that prevents it.
Which in turns demonstrates how much energy there is actually stored in fossil fuels. Even with a 70% drop you can still reach speed > 100km/h for hundreds of kilometers on a 1ton+ vehicle, all of this on less than 40kg of primary source.
No wonder we got addicted to fossil fuels.
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@Natasha_Jay ok, that's a really interesting infographic.
Thanks for sharing@Nikkileah
Kind of "in your face" isn't it? -
@Natasha_Jay Then do the same for moving a *person* rather than a *car*, and include an e-bike comparison.
@TimWardCam
Totally agree. -
@Nikkileah
Kind of "in your face" isn't it?@Natasha_Jay nahh. Just straightforward & easy to understand.
The best kind -
@Natasha_Jay Then do the same for moving a *person* rather than a *car*, and include an e-bike comparison.
@TimWardCam @Natasha_Jay and add a tram and a train
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This analysis is fascinating: it breaks down how when you fill up a petrol car most of the energy never moves it.
Petrol car: 13–21% of the crude oil's energy reaches wheels.
Electric car on today's UK grid: 43–45%.
Electric car on wind+solar: 77–80%.
via Jan Rosenow, Professor of Energy & Climate Policy at University of Oxford
@Natasha_Jay the dodges there are that it doesn't show a hybrid on petrol and that none of the cars seem to have passenger cabin heating, but it's essentially true.
Now if only there were more battery cars that weren't spyware-on-wheels...
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@TimWardCam @Natasha_Jay and add a tram and a train
@awalter @TimWardCam @Natasha_Jay - this applies to every application of electrification and renewable energy, e.g. I believe heat pumps are 300-400% efficient. Fossil energy is just massively wasteful. Definitely something to remember when you see a pessimistic statistic about renewable energy as a percentage of total primary energy consumption - we don't need to get anywhere near to 100% of the "before" level.
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This analysis is fascinating: it breaks down how when you fill up a petrol car most of the energy never moves it.
Petrol car: 13–21% of the crude oil's energy reaches wheels.
Electric car on today's UK grid: 43–45%.
Electric car on wind+solar: 77–80%.
via Jan Rosenow, Professor of Energy & Climate Policy at University of Oxford
@Natasha_Jay
That’s a nice graphic. -
This analysis is fascinating: it breaks down how when you fill up a petrol car most of the energy never moves it.
Petrol car: 13–21% of the crude oil's energy reaches wheels.
Electric car on today's UK grid: 43–45%.
Electric car on wind+solar: 77–80%.
via Jan Rosenow, Professor of Energy & Climate Policy at University of Oxford
@Natasha_Jay I wish they would include in this analysis how much energy solves the problems of moving a person from A->B. Even electric cars have to move 1-2 tons of metal and rubber along with the person, where as a bicycle can do it with around 10kg. Even if a car was 100% efficient it is still wasting 95% of it's energy moving itself around. Where with a bicycle it's closer to 5%. On this the easiest way to improve your efficiency is to car pool or cycle.
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This analysis is fascinating: it breaks down how when you fill up a petrol car most of the energy never moves it.
Petrol car: 13–21% of the crude oil's energy reaches wheels.
Electric car on today's UK grid: 43–45%.
Electric car on wind+solar: 77–80%.
via Jan Rosenow, Professor of Energy & Climate Policy at University of Oxford
@Natasha_Jay I had that exact conversation last week around "coal powered e-bikes". The fact is that electrification of all the things is way better than burning at home. Burn in big fire to boil big kettle to get big electrcity, not small fire to boil little kettle to get tea. Use electricity to get tea.
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This analysis is fascinating: it breaks down how when you fill up a petrol car most of the energy never moves it.
Petrol car: 13–21% of the crude oil's energy reaches wheels.
Electric car on today's UK grid: 43–45%.
Electric car on wind+solar: 77–80%.
via Jan Rosenow, Professor of Energy & Climate Policy at University of Oxford
@Natasha_Jay
I am kinda wondering why the drivetrain is 16 percent loss vs 9 percent loss when they are both electric though?? -
This analysis is fascinating: it breaks down how when you fill up a petrol car most of the energy never moves it.
Petrol car: 13–21% of the crude oil's energy reaches wheels.
Electric car on today's UK grid: 43–45%.
Electric car on wind+solar: 77–80%.
via Jan Rosenow, Professor of Energy & Climate Policy at University of Oxford
@Natasha_Jay From the graphic, for the electric car currently vs on wind and solar it has: charging 5% vs 9%; drivetrain 9% vs 16%; cooling & steering 2% vs 3%; auxiliaries 0-2% vs 0-4%; and braking returns (-)11% vs (-)19%.
Why are there any differences at the level of the vehicle when that is not the thing that has changed? I get the grid-level differences, but the vehicle-level differences are odd to say the least.
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@MichaelPorter @yugthebug @Natasha_Jay so the common scale in the subtitle is wheels moving? Definitely a bit of a mind-twister! Possibly because the flow implies remaining.
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@MichaelPorter @yugthebug @Natasha_Jay so the common scale in the subtitle is wheels moving? Definitely a bit of a mind-twister! Possibly because the flow implies remaining.
@mikerspencer @yugthebug @Natasha_Jay Nor sure what you mean by “common scale in the subtitle.”
All of the numbers at the top of each diagram represent percentage losses from the original 100%. Let's say we start with 100 kWh.
Drivetrain losses are the same for both electric vehicles, 20% of whatever's left.
For the “UK grid" car, that's 20% of 45 kWh, or 9 kWh (9% of the original 100 kWh).
For the “wind & solar" car, it's 20% of 79 kWh, or 16 kWh (16% or the original 100 kWh). -
This analysis is fascinating: it breaks down how when you fill up a petrol car most of the energy never moves it.
Petrol car: 13–21% of the crude oil's energy reaches wheels.
Electric car on today's UK grid: 43–45%.
Electric car on wind+solar: 77–80%.
via Jan Rosenow, Professor of Energy & Climate Policy at University of Oxford
Of the total energy a barrel of oil, a fraction can be converted into gasoline. Other fractions are converted into diesel and bunker fuel and lubricants and other industrial inputs etc
You can’t say 100% of oil going into a car. You have to start with the fraction of a barrel that that’s convertible into the fuel used in cars.
Even more fascinating is why a two legged meat puppet drags with them 1000 pounds of toxic waste to buy their milk.
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@Natasha_Jay
I am kinda wondering why the drivetrain is 16 percent loss vs 9 percent loss when they are both electric though??@yugthebug @Natasha_Jay A lot of power is lost in the gearbox vs electric cars that are (usually) direct drive.
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This analysis is fascinating: it breaks down how when you fill up a petrol car most of the energy never moves it.
Petrol car: 13–21% of the crude oil's energy reaches wheels.
Electric car on today's UK grid: 43–45%.
Electric car on wind+solar: 77–80%.
via Jan Rosenow, Professor of Energy & Climate Policy at University of Oxford
@Natasha_Jay Also, oil is INCREDIBLY useful for making plastics, fertilizer, chemicals, synthetics, lubricants, and all sorts of other shit that's difficult to replace from natural sources. And then we just go and burn the shit...
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This analysis is fascinating: it breaks down how when you fill up a petrol car most of the energy never moves it.
Petrol car: 13–21% of the crude oil's energy reaches wheels.
Electric car on today's UK grid: 43–45%.
Electric car on wind+solar: 77–80%.
via Jan Rosenow, Professor of Energy & Climate Policy at University of Oxford
Seems like should focus on developing chargers that allow DC-DC charging directly from on-site solar panels.
