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IMechE seem to stress that electrification is the overwhelmingly best solution and that cancellation of electrification programmes is itself a problem because of stop/start investment in skills, capability, economy of scale etc. They also state that Hydrogen overall has a much lower conversion efficiency than direct use of electricity.
 

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What the longest tunnel in the UK.
is it uphill?
if there was electric both ends how much battery would the largest train need?
 

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But that's all irrelevant now that the UK government's preferred option is to run trains with both diesel and electric motor sets rather than spend the money completing the electrification of the line :mad: The design life of the locos is only 30-35 years, so they might have sorted this out by then...:rolleyes:
 

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But that's all irrelevant now that the UK government's preferred option is to run trains with both diesel and electric motor sets rather than spend the money completing the electrification of the line :mad:
Utterly shameful. The one easy win in the climate change battle - one which most other countries seem to manage with ease - and this government couldn't.

As Marli pointed out rather cryptically above, the big expense in electrification is tunnels and bridges. I live in Bedford and we have to endure months of misery (again) as they replace the road bridge* over the rail just north of the station to accommodate the overhead wires (they've spend years replacing every bridge in the villages north of Bedford, and the bridge just south of the station (for reasons which escape me - it already had overhead lines, but maybe the wrong sort of wires). It would all have been unnecessary if they had gone for battery/electric hybrids.

* The work necessary is unbelievable. Making it one way for months to remove and reroute all the services crossing the bridge, building a temporary footbridge and now about to close it completely to demolish the old and build a new.
 
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