BRFR Cake Stop 'breaking news' miscellany

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PurplePenguin

Über Member
It does feel a bit like China is reinventing the world. Now they are building massive solar farms *over* reservoirs, as it helps reduce evaporation. The scale of the one here is mind boggling: it's like they come up with an idea and then just scale it up x1000.

https://bsky.app/profile/dcmfox.bsky.social/post/3mp5ajeukik23

It looks expensive though and there's no info beyond the tweet.
 
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briantrumpet

briantrumpet

Timewaster
It looks expensive though and there's no info beyond the tweet.

Fair points, though floating solar does seem to be most, erm, concrete, and is of a similar ambition. Doubly sweet that this one is over a former coal mine.

https://engineerine.com/chinas-floating-solar-farm/

The site of the Huainan floating solar farm once symbolized China’s dependence on fossil fuels. For decades, the region was a coal mining stronghold, contributing heavily to the country’s industrial rise—but also to its air pollution crisis.

Over time, the pit collapsed, creating an artificial lake. Rather than abandoning this degraded land, Chinese engineers saw an opportunity. By covering the lake’s surface with over 13,000 solar panels, the country turned an environmental liability into a climate solution.
 

PurplePenguin

Über Member
Fair points, though floating solar does seem to be most, erm, concrete, and is of a similar ambition. Doubly sweet that this one is over a former coal mine.

https://engineerine.com/chinas-floating-solar-farm/

Solar farms are really really big though. If you look at videos of fly overs in Australia, you will appreciate the size of the things and how you really need to minimise the cost of installing every panel. Of course, if there is a shortage of land, putting them wherever possible is going to help.
 
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briantrumpet

briantrumpet

Timewaster
Solar farms are really really big though. If you look at videos of fly overs in Australia, you will appreciate the size of the things and how you really need to minimise the cost of installing every panel. Of course, if there is a shortage of land, putting them wherever possible is going to help.

As much as anything, the point was that China is trying this stuff at extreme scale, and rapidly, which was more my point, rather than an individual scheme's viability (and appropriateness for, say, the UK).
 
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PurplePenguin

Über Member
As much as anything, the point was that China is trying this stuff at extreme scale, and rapidly, which was more my point, rather than an individual scheme's viability (and appropriateness for, say, the UK).

Many years ago when I was in China, my guidebook told me how China had hired all the best tunnelling experts from Switzerland with the purpose of building a train to Tibet. Apparently, the Swiss told the Chinese it was impossible.

It's now possible to travel from Beijing to Lhasa on a train. It's the highest in the world and goes over 5000m.

The Swisss clearly failed to appreciate just how important the line was, but having liberated the Tibetans and made Tibet an integral part of China, it had to be built.
 
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briantrumpet

briantrumpet

Timewaster
Many years ago when I was in China, my guidebook told me how China had hired all the best tunnelling experts from Switzerland with the purpose of building a train to Tibet. Apparently, the Swiss told the Chinese it was impossible.

It's now possible to travel from Beijing to Lhasa on a train. It's the highest in the world and goes over 5000m.

The Swisss clearly failed to appreciate just how important the line was, but having liberated the Tibetans and made Tibet an integral part of China, it had to be built.

I suspect that they do have a less cautious (and less risk-averse) culture, so failure will also be higher. (There was an example of a fairly new bridge collapsing recently, which had been built from a mountainside that was prone to landslides, and the land slid, toppling a good chunk of the bridge.)

EDIT: this is the one:

 
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icowden

Pharaoh
It looks expensive though and there's no info beyond the tweet.

If only there was some way of making it pay for itself - say by offering almost limitless amounts of energy harvested from sunlight for 20 years at almost no additional cost.

Found this:

  • Anhui Fuyang Project: Built by the China Three Gorges Corporation, this 650-megawatt (MW) megaproject is the world's largest floating solar farm. It operates as an aquaculture-fishery hybrid, allowing fish farming to occur beneath the panels.

  • Dezhou Dingzhuang Project: This 320-MW facility in Shandong province is another massive installation producing renewable energy for the local grid
 
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briantrumpet

briantrumpet

Timewaster
If only there was some way of making it pay for itself - say by offering almost limitless amounts of energy harvested from sunlight for 20 years at almost no additional cost.

Found this:

  • Anhui Fuyang Project: Built by the China Three Gorges Corporation, this 650-megawatt (MW) megaproject is the world's largest floating solar farm. It operates as an aquaculture-fishery hybrid, allowing fish farming to occur beneath the panels.

  • Dezhou Dingzhuang Project: This 320-MW facility in Shandong province is another massive installation producing renewable energy for the local grid

I imagine that floating versions have different engineering challenges from those on pylons, but by trying out the engineering and assessing relative costs will be an integral part of the project outcomes.
 
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Dorset Boy

Senior Member
The moroccans started building their mega solar facility a decade ago:
The Ouarzazate Solar Power Station located in the Drâa-Tafilalet region of Morocco, is the world's largest Concentrated Solar Power (CSP) complex. Spanning an area the size of 3,500 football fields, it provides renewable electricity to over a million people...
At 510 MW, it is the world's largest concentrated solar power (CSP) plant including a field of 2 million giant mirrors. With an additional 72 MW photovoltaic system the entire project was planned to produce 582 MW. The total project's estimated cost is around $9 billion

https://en.wikipedia.org/wiki/Ouarzazate_Solar_Power_Station
Having 330 days of sunshine a year helps, along with a chunk of otherwise largely unusable land.
 
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briantrumpet

briantrumpet

Timewaster
The moroccans started building their mega solar facility a decade ago:
The Ouarzazate Solar Power Station located in the Drâa-Tafilalet region of Morocco, is the world's largest Concentrated Solar Power (CSP) complex. Spanning an area the size of 3,500 football fields, it provides renewable electricity to over a million people...
At 510 MW, it is the world's largest concentrated solar power (CSP) plant including a field of 2 million giant mirrors. With an additional 72 MW photovoltaic system the entire project was planned to produce 582 MW. The total project's estimated cost is around $9 billion

https://en.wikipedia.org/wiki/Ouarzazate_Solar_Power_Station
Having 330 days of sunshine a year helps, along with a chunk of otherwise largely unusable land.

These kinds of things show that the problem of electrical power is physically solvable (along with individual home-based solutions), which gives hope, and current (boom boom) uncertainties in the carbon-based energy world seem to be making the political and economic arguments a much easier sell.

A not-unrelated aspect is that the scale of these things is just mind-boggling to tiny me.
 
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icowden

Pharaoh
I imagine that floating versions have different engineering challenges from those on pylons, but by trying out the engineering and assessing relative costs will be an integral part of the project outcomes.

That said - we are doing them over here. This is the reservoir next to me. In 2016 this was Europe's largest floating solar farm with a 6.3MW array of 23000 panels. I'm always surprised that they haven't expanded it.

1782470897604.png
 
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