Plastic bags, climate change, renewable energy,

ozzybmx

ozzybmx

taking a shit with my boobs out
oldcorollas said:
What are the losses like on long undersea cable like that?
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Depends on cable quality, length and load, not sure where Australia would go with an undersea line as we are too far away from a country with excess generation.

There are losses on step-up and step-down and transmission, then the higher the voltage, the less transmission losses due to resistance. So it may be stepped up from 275kV to 800kV for transmission, then stepped down again at the other side to say 275kV again, then down further to useable voltages.

The length of the interconnector underseas and the cost is not viable for Australia and no one is ever going to pay for it.

Where does it go ? 2000km to NZ and just remember the Eastern grid is not connected to WA, so Malaysia is out of the question or another transmission line would have to be built 1000's of kilometers overland from Broome/Karratha to link to the NEM.
 
oldcorollas

oldcorollas

Levin the moment
the Suncable would be only outgoing, not incoming..
3800-4300km and up to 2km deep seems ambitious... to provide 15% of Singapores power, with competing projects 50-500km away from them...

ambition is good but...

Wonder what makes it seem worthwile to MC-B, rather than selling the power locally?
(then again.. they are more likely on a "build to sell" model than "build to own", so as long as it is marketable to investors/super funds....)
 
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ozzybmx

ozzybmx

taking a shit with my boobs out
Mattyp said:
Its for export of power to Singapore.

Australia-Asia Power Link - Wikipedia

en.wikipedia.org en.wikipedia.org
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Ambitious indeed :oops:

An 800 km (500 mi) overhead power line will transmit 6.4 GW[10] to Darwin, where it will transfer to a 4,500 km (2,800 mi) 2.2 GW undersea power line to Singapore. This undersea cable will be the longest undersea cable in the world, exceeding the existing longest undersea power cable by a factor of around five.
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800km transmission above ground then 4500km undersea cable capable of sending 2200MW to Singapore.

There are literally 100's of projects planned in Australia right now, new power plants, batteries, hydrogen plants, pumped hydro etc...

The project aims to supply electricity to Darwin by 2030 (900 megawatts initially), and to Singapore a few years thereafter. Eventually the solar farm would produce 6 gigawatts of energy.
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Its a great idea but I cant see it happening.
 
Mattyp

Mattyp

Cows go boing
oldcorollas said:
Wonder what makes it seem worthwile to MC-B, rather than selling the power locally?
(then again.. they are more likely on a "build to sell" model than "build to own", so as long as it is marketable to investors/super funds....)
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You could sell locally and make some coin... But you'd still be fucked without electricity. They're thinking long term, and Singapore don't have the space for a ginormous Solar Plant, but the middle of Australia has plenty...our short sighted governments are more than happy to sell off land and what not for a quick influx of cash too so it's a bit of a no brainer really.
 
Scotty T

Scotty T

Walks the walk
Minlak said:
I think this fits here - Australia from 2025 are embracing Euro emission laws which is going to make it harder to get some of the vehicles you love as they will not pass emissions - obviously this applies to new vehicle sales as always
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Better late than never, but we still need fuel efficiency standards.
 
oldcorollas

oldcorollas

Levin the moment
Stredda said:
Pity the blades can't be make with something a little more environmentally friendly. At least steel can be recycled but fibre composite can't.
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There's going to be some pretty impressive dumps/landfills in future with old turbine blades, solar panels and car batteries...

Sure they can be recycled, but if the $$ don't make sense no-one will...

10027-cover-casper-opener.jpeg
 
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Stredda

Stredda

Runs naked through virgin scrub
oldcorollas said:
There's going to be some pretty impressive dumps/landfills in future with old turbine blades, solar panels and car batteries...

Sure they can be recycled, but if the $$ don't make sense no-one will...
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Yes, it is unfortunately, unless it is mandated, recycling only tends to happen when it is cost effective to do so.
I think with solar panels and especially car batteries it is cost effective, and you can recycle almost 100% of the raw materials.
 
oldcorollas

oldcorollas

Levin the moment
Not buried, but piled up...
They'll certainly be recycled first for value.

Is it cheaper to make batteries using raw materials or starting with an old battery?
Is anyone not using raw materials now? (in bulk, not in lab)

Mandated means we pay the cost upfront, which is a good thing :)
 
Scotty T

Scotty T

Walks the walk
20,000 blades for wind generation worldwide (my calcs say that's 104,000 tonnes), or 140 million tonnes of fly ash for coal (that's US only) plus the CO2 emissions. Take your pick.

People seem to not realise how small the wind turbine and solar panel disposal problem is compared to what we do now with coal.

www.abc.net.au

Why don't we recycle more of the 12 million tonnes of coal ash produced every year?

It makes up 20 per cent of all waste in Australia, and can be used to make high-quality and efficient concrete. So why is coal ash being dumped in toxic waste dams, and not being recycled?
www.abc.net.au www.abc.net.au

Stredda said:
Yes, it is unfortunately, unless it is mandated, recycling only tends to happen when it is cost effective to do so.
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This is why we don't have a circular economy, the free market doesn't make as much money if they have to pay for their waste.

oldcorollas said:
They'll certainly be recycled first for value.
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For EV batteries, the cells can be used in lower power applications and that seems to be the focus now. Of course Elon and co believe that we'll be melting them down into their raw materials so have gone from packs with modules that could be repurposed to one that will have to melted or used as is when it's just lower on juice and not damaged. This is a good article on the industry:

www.canarymedia.com

EV battery recycling is costly. These 5 startups could change that

Meet the American companies making lithium-ion battery recycling more profitable and sustainable than it’s ever been.
www.canarymedia.com www.canarymedia.com
 
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