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A comment on All poverty is energy poverty. Parent comment

Re:All poverty is energy poverty by CraigJPerry on Monday September 05, 2022 @01:38PM (#32726930)
But only around 30% of the refined fuel’s energy transfers into useful work done with the ICE vehicle.

If the BEV is running with their 2kw heating turned up full blast in addition to running down the road, and there was a heat loss of around 2-5% while charging the car then We’re still at around 3x more efficient in the BEV vs the ICE.

Then there’s the electricity supply which ranges from 0 refinement loss and 50% thermal efficiency (natural gas fired power plant) to NaN% for nuclear, wind and solar.

A BEV charging right this minute in the UK is consuming energy originating from 25% gas, 25% nuclear, 25% wind, 5% solar (its 6:30pm).

It could be more than 5x when you compare with ICE fuel supply / refinement / storage / delivery.

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Re:All poverty is energy poverty by WalterBright on Monday September 05, 2022 @02:13PM (#32727339)
> But only around 30% of the refined fuel’s energy transfers into useful work done with the ICE vehicle.

Right. Now factor in the losses in thermodynamic electric power generation to fuel the EV.

> We’re still at around 3x more efficient in the BEV vs the ICE.

Don't neglect the losses from generating that electricity, which is about 70%.

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Re:All poverty is energy poverty by CraigJPerry on Monday September 05, 2022 @02:30PM (#32727558)
>> Don't neglect the losses from generating that electricity, which is about 70%

What? There’s 70% loss in the process of generating electricity? Where does that occur?

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Re:All poverty is energy poverty by WalterBright on Monday September 05, 2022 @03:56PM (#32728669)
Thermodynamic efficiency. Google says coal electric power generation is 33% efficient.
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Re:All poverty is energy poverty by CraigJPerry on Monday September 05, 2022 @04:11PM (#32728885)
BEV’s run on coal power?
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Re:All poverty is energy poverty by josephcsible on Monday September 05, 2022 @04:14PM (#32728913)
There's no magical barrier in the electrical grid that prevents charging BEVs from coal-fired power plants.
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Re:All poverty is energy poverty by CraigJPerry on Monday September 05, 2022 @04:53PM (#32729315)
Parent is alleging 100% supply from coal since they claim there’s 70% thermal loss in the charging of BEVs

Coal is circa 20% of the supply in the US. About the same as nuclear or renewables.

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Re:All poverty is energy poverty by onlyrealcuzzo on Monday September 05, 2022 @02:19PM (#32727420)
It's 10% or less for solar, wind, nuclear, etc...
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