61–70 of 299 posts
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At this length aluminium would have been used instead most likely. With a typical HVDC line not exceeding 1200mm2 conductor cross section it's about 13k tonnes, so 0,025% of global aluminium production.
> not exceeding 1200m2 conductor cross section Technically right but I think you mean 1200mm2 (a radius of approx 20mm)
I actually had an autocorrect suggestion for "1200m2" in there for some reason.
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I would hope Europe has learned a lesson not to depend on unreliable partners for its energy.
But if it's cheaper, let's take those easy wins and think about that later!
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This is totally unresearched, but my gut says it would be much higher ROI for Europe + North America to independently source solar from their respective nearby deserts, paired with batteries?
I would hope Europe has learned a lesson not to depend on unreliable partners for its energy.
Alas during the previous Trump presidency, Europe saw that modern Republican 'America First' thinking doesn't just call for a wall with Mexico, a travel ban with Muslim countries, and a trade war with China - it also wants a trade war with Europe.
And linking the south of Spain to the north of Morocco only needs ~200km of undersea cable, rather than the ~6000km an EU-to-US link would call for. That's a pretty big benefit.
Australia is going to have make it Rd2 of being an energy commodity superpower. 40 years of exporting coal to China, it can look forward to 1000's years of export solar to APAC.
This sounds good! I don't know much about electricity, can anyone tell me if such an undersea power cable could be technically feasible between Europe and North America? Possibly taking a detour through Iceland which has significant geothermal resources. I understand that it would take much more than just the cable between the two continents to make this work - right now there are issue on the continents themselves t…
From the article, it looks like they are installing 20 GWp of solar cells. ("peak power" that is only achieved when the sun is right above the solar cells with no atmosphere in between). The plan seems to be to store 36-42 GWh, and to deliver 2 GW max. That makes for a 20h energy storage at full power, and a big enough power reserve to recharge that storage during the day while delivering at full power. Likely a rese…
We have to, otherwise the solar panels wouldn't work.
Australia is going to have make it Rd2 of being an energy commodity superpower. 40 years of exporting coal to China, it can look forward to 1000's years of export solar to APAC.
Technology is progressing so fast that something like space based solar or fusion power will replace terrestrial solar within 100 years.
Australia is going to have make it Rd2 of being an energy commodity superpower. 40 years of exporting coal to China, it can look forward to 1000's years of export solar to APAC.
Does it actually make economic sense to run a cable large enough for that kind of power from Australia to Singapore? I would have guessed there must be enough domestic customers or in Indonesia that would make more sense.
My very first thought was: that cable gets snipped in wartime. Not a big deal, if your grid can handle the loss, but this certainly can’t be the gameplan for the bulk of your power.
In Singapore's situation, they can probably invest assuming that they are not in a military conflict with anyone. If they get into a war with anyone who can cut that cable they will be returning to the stone age anyway. If Indonesia objects to them they will go, if someone with the power to coerce Indonesia objects to them they're in deep trouble.
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Usually the resistance does not stay the same, because it is preferred to use a thinner cable, to reduce its cost. At a given power, double voltage means half current. If the resistance is kept the same, that means 4 times lower losses. If the resistance is doubled by using a thinner cable, that still results in two times lower losses.
Yeah I agree, I was just pointing out that a wire won’t change resistance due to voltage going up. Of course notwithstanding the wire heating up or something.