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World’s biggest tidal energy ‘kite’ could single-handedly power a small town (thenextweb.com)

submitted 1 year ago by kalkulat@lemmy.world to c/technology@lemmy.world

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[–] justhach@lemmy.world 53 points 1 year ago (3 children)

I always thought that tides were a really underutilized source of energy.

I mean, look at the Bay of Fundy. The equivalent of all the water in all the rivers in the entire world cycles in and out every single day. Thats a lot of movement and a ton of potential energy there.

[–] KoboldCoterie@pawb.social 40 points 1 year ago (1 children)

As the article notes, part of the problem with large-scale operations like this in the past is that they disrupted ocean life to a significant degree; this one is different in that it (theoretically) doesn't, since it's smaller and mobile and not tethered to the seabed.

[–] threeganzi@sh.itjust.works 2 points 1 year ago (1 children)

The article doesn’t say anything about it not being tethered, so I’d assume it still is.

[–] KoboldCoterie@pawb.social 3 points 1 year ago

Power is then sent to the grid via a subsea cable which also acts as the kite’s tether.

I'd assume this is less disruptive to sea life than this, which appears to just be a giant bollard with a turbine mounted on it sunk into the seabed.

[–] Taringano@lemm.ee 11 points 1 year ago

The sea is very corrosive which destroys moving parts :(

[–] kalkulat@lemmy.world 5 points 1 year ago (1 children)

Not many people live there, but W. Australias' Kimberley Coast has a section where the tide rises 36 feet.

https://www.youtube.com/watch?v=mJ9kdhVJT0U

Waves big enough to surf arrive.

https://www.youtube.com/watch?v=loRr97fOWdg

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