Sustainable Energy without the Hot Air (Revised, Community Edition)

Re:Sustainable Energy without the Hot Air (Revised, Communit... by algo_trader on Sunday October 31, 2021 @10:57AM (#29057419)

Yes. The conclusion has changed!

Electric cars are ridiculously efficient. A 100kwh tesla drives approx 500km. So 50km/day/car needs just 10kwh. The UK also has 2 persons per car (plus additional cats and dogs..)

So just the on-shore book projection is already enough AND only requires a tenth of the turbines.

Lets keep nuclear as well. Invest in efficiency. Lots of hard work ahead.

But we are probably closer to "problem solved" than to "civilization collapse". Cheers.

[ Parent | on HN ]

Re:Sustainable Energy without the Hot Air (Revised, Communit... by rufuspollock on Sunday October 31, 2021 @11:27AM (#29057647)

Just to flag that MacKay already estimated (in 2008) a Tesla at 15kwh per 100km (actually better than you have here). See Fig 20.22 on https://climate.lifeitself.us/without-hot-air/chap20/

[ Parent | on HN ]

Re:Sustainable Energy without the Hot Air (Revised, Communit... by oezi on Sunday October 31, 2021 @01:55PM (#29058858)

I am less concerned about the consumption, but the issue how much available wind energy we can harness in a best case scenario. Only half of transportation seems so low.

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Re:Sustainable Energy without the Hot Air (Revised, Communit... by dane-pgp on Sunday October 31, 2021 @06:19PM (#29061022)

> 50km/day/car

For what it's worth "In 2019, the average car in the UK drove 7,400 miles"[0] which works out to 33 km/day/car. It's probably much less now due to working from home (and fuel shortages, and the collapse of the supply chain...)

[0] https://www.nimblefins.co.uk/cheap-car-insurance/average-car...

[ Parent | on HN ]