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A comment on $22B project to provide 8% of UK energy via undersea cable from North Africa. Parent comment

Re:$22B project to provide 8% of UK energy via undersea cabl... by xp84 on Thursday March 09, 2023 @06:27PM (#35088350)
One of the pictures in the article shows one of those giant mirror arrays. They have one in the Eastern CA desert near Vegas. They reflect all the energy in a big circle into a single point, which when you look at it is at like, a near-sun-level of brilliance, where it (presumably) boils lots of water to run turbines or whatever.

Perhaps they're going to use those instead of all the rare earth complexity that is photovoltaics.

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Re:$22B project to provide 8% of UK energy via undersea cabl... by depereo on Thursday March 09, 2023 @06:50PM (#35088558)
Those designs do 'eventually' use water to run turbines, but the primary thing that gets heated and has that heat harvested (to boil water) is sodium.
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Re:$22B project to provide 8% of UK energy via undersea cabl... by zizee on Thursday March 09, 2023 @07:44PM (#35089018)
> Perhaps they're going to use those instead of all the rare earth complexity that is photovoltaics.

Photovoltaics (aka Solar panels) do not use a lot of rare earth materials.

From one of the links below:

> Unlike the wind power and EV sectors, the solar PV industry isn’t reliant on rare earth materials. Instead, solar cells use a range of minor metals including silicon, indium, gallium, selenium, cadmium, and tellurium.

https://www.pv-magazine.com/2019/11/28/are-rare-earths-used-...

https://ratedpower.com/blog/rare-metals-photovoltaic/

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Re:$22B project to provide 8% of UK energy via undersea cabl... by jokoon on Friday March 10, 2023 @07:02AM (#35093330)
those mirror things use natural gas to start up, so not very green
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Re:$22B project to provide 8% of UK energy via undersea cabl... by VintageCool on Friday March 10, 2023 @03:20PM (#35100366)
15 years ago it looked like solar thermal might be the way to go. But it turns out that, once people started manufacturing a lot of solar PV panels, they got really good at it. Solar PV costs dropped 90% in a decade.

At this point, in most cases, it would probably be foolish to build a non-PV solar power plant.

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