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Certes · April 10th 21, 05:16 PM posted to uk.transport.london,uk.railway

On 10/04/2021 16:57, Graeme Wall wrote:
On 10/04/2021 16:36, wrote:
On Sat, 10 Apr 2021 15:31:50 -0000 (UTC)
Recliner wrote:
wrote:
On Sat, 10 Apr 2021 11:04:28 -0000 (UTC)
Well blue hydrogen is a non starter, but even green hydrogen is far
less
efficient in wind turbine to wheel energy terms taking in every
stage + the
vehicle itself than simply charging up a battery. Something like 50%
for a
battery EV vs 30% for green H2 I remember reading. The only single
advantage
H2 has over batteries is recharge time, other than that its hopeless.

Recharge time and capacity. It has a much higher energy density than
current and projected future batteries, unless there's a big step change
(possible at some stage, but not imminent). .

That matters for long distance lorries and buses for whom suitable
batteries
would be a ridiculous size, but for cars its not even an issue right now,
never mind as technology advances. Yes, they're maybe half a ton heavier
than an equivalent ICE car at most, but the vehicle size is the same, if
not a bit smaller.

https://www.bbc.co.uk/news/science-environment-56678669

[Re yellow lorry image, top] Is the trailer for the batteries?