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0 pointslittlecranky676mo ago0 comments

Article is outdated (2008) and makes a single argument: Desalination requires too much energy. Becaues it is outdated, it doesn't account for the excess energy a lot of places and countries have from wind and solar. Water desalination is a prime candidate (along with Bitcoin mining and AI model training, sigh) for using available excess energy from renewable that cannot be stored otherwise. Clean/drinking water can be stored easily - it is called a freshwater lake.

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KaiserPro6mo ago

The UK also doesn't have enough power, well not enough to do whats needed for desalination.

It would be _vastly_ cheaper and easier to build reservoirs.

p1dda6mo ago

Build new power plants genius

KaiserPro6mo ago

congratulations, you now have 8x the debt, breaks the legal requirements for decarbonising the grid, diverts money away from uprading the grid from where its needed, and pisses off the most of the locals. Then you discover that all your fresh water is by the coast, so you now also need to build huge water moving infrastructure.

you might as well just do this: https://en.wikipedia.org/wiki/Grand_Contour_Canal and spend the rest of the money building homes.

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derriz6mo ago

Not really - renewable curtailment and negative wholesale electricity prices happen but not frequently enough that you can generally afford to leave a capital intensive investment like a bitcoin mining setup, a water desalination plant or a hydrogen electrolyser idle 90% of the time waiting for cheap electricity.

And the market and technological developments (batteries) are actively working against this pricing anomaly - I can see the phenomena of negative pricing disappear completely in electricity markets in the next few years given the current explosion in grid battery deployment.

littlecranky67OP6mo ago

Might be true in the US, but here in Europe we see this quite often. Prices don't have to be negative, it is enough if they are cheap (we pay for water too). And in some locations there are already projects like this [0] where they built a hydro-electric pump station with a dam for storage plus a desalination plant that fills the reservoir from seawater in one location.

[0]: https://www.ree.es/en/ecological-transition/storage

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0 pointslittlecranky676mo ago0 comments

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KaiserPro6mo ago

The UK also doesn't have enough power, well not enough to do whats needed for desalination.

It would be _vastly_ cheaper and easier to build reservoirs.

p1dda6mo ago

Build new power plants genius

KaiserPro6mo ago

you might as well just do this: https://en.wikipedia.org/wiki/Grand_Contour_Canal and spend the rest of the money building homes.

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derriz6mo ago

littlecranky67OP6mo ago

[0]: https://www.ree.es/en/ecological-transition/storage

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