Comment Re:What happened to the wind turbines? (Score 1) 54
They've kind of got to get around to building them first...
They've kind of got to get around to building them first...
Which is measured how and actually means what in real world terms?
I already told you how it was measured.
And now you're moving the goalposts. You said Mackay's numbers were old and wildly off. Mackay's numbers match modern wind farms.
He may well have had reasonable numbers for some things, but he fudged numbers for a lot of other things
Aaaaaaahahahahah pull the other one, mate, it's got bells on.
You picked two things he "fudged the numbers" on. Both of them were fine. So now it's other, nonspecific numbers that are fudged. Cool.
Which figures? Land usage figures? Because that is mostly what he focuses on and he exaggerates the land usage of wind turbines to a fantastical degree, pinning it at 2 Watts per square meter.
He has it at 3 offshore. The London Array runs at about 3.2.
You've given a lot of reasons why he's wrong but the figures disagree. All I did was divide the yearly output buy a year and the land area.
Bu the way, Seagreen 1A is about 0.3 W/m2.
That would be around 107 Watts per square meter
You need to leave space between turbines...
Now, this is primary power, not just electrical usage, to be clear.
Yes, the book is sustainable energy without the hot air, not just sustainable electricity for current usages.
As for technological changes, solar cells have become more efficient and much cheaper.
A bit but insolation has not changed. Mackay quoted 20%,the best rooftop panels are about 25 now. So out of date, but it's not a huge change, either.
In fairness this has always been called game AI.
There's worse ideas.
In practice the US has a lot of space and sunny weather, and tech has advanced. That combined with the regulatory environment means renewables are almost certainly going to be quicker to build up to the capacity needed.
But like I said, there are worse ideas.
You just referenced Dr. MacKay's book.
Yep.
I've been over it and t is full of faulty information. Aside from that, the information in it is just old.
So you say. And yet, his figures for wind farms match closely what the London Array which was commissioned in 2018. Tech does advance, but it's not going to yield an order of magnitude change in energy density.
Too much has happened both in terms of technological change and data collection since then for the book to be taken seriously.
Like what? Now floating turbines exist which do remove the 100m deep water limit he talks about. They are still experimental tech, basically and very expensive. Water depth maps haven't changed, and average wind speeds haven't that much either. His numbers appear to match current deployments.
Sam D is very good, and I think his analysis is broadly correct, but I would be wary of treating him as apolitical. He's a leading thinker for the centre-right, along with Sam Bowman (Sam Freedman completes the clever-Sam-centrist trifecta, but is on the left rather than right).
I've not actually encountered this chap before. This particular article didn't strike me (at a first read) as obviously politically biased. For example about how the conservation laws aren't in his opinion achieving the aims they intend to achieve, which I don't disagree with. I'm strongly conservationist (that's political), but despite stringent laws (they stop a lot) our biodiversity is still crashing, so to me the laws aren't working.
With the caveat that now just about everything appears to be political. Starmer's solution seems to be to cherry pick cauldron species, insult people who care, then just give up.
Yeah we're taking about the tunneling under the city bit. You're not going to tunnel all the way from SF to LA.
There is no way half that distance is as dense as central London. One of the feats that paid for was threading the line between an escalator and a rail tunnel with tolerances in the centimetres. They also built massive, high capacity interchanges with existing high capacity stations, something which isn't really much of a problem in California. You can leave that to later.
With your bare hands?!?