71–80 of 106 posts
Earlier quoted context omitted.
> Unfortunately, there is no "team humanity", except in one losing game Team Humanity is frequently identified as the political left. It shouldn’t be too hard to coordinate internationally.
Every team thinks they are team humanity.
One day solar energy will be shifted from Portugal to Shanghai & Moscow then across the Bering Strait to Alaska & New York.
What country A wants to do is totally different that country B wants.
Some western countries are freezing as they are investing hard in solar/wind plants, while China makes ton of carbon plants.
Earlier quoted context omitted.
> Unfortunately, there is no "team humanity", except in one losing game Team Humanity is frequently identified as the political left. It shouldn’t be too hard to coordinate internationally.
Every team thinks they are team humanity.
I cannot help but wonder what the answers are to these points: > Norwegians are forgetting that domestically produced power is not always cheaper. Whenever the current in the cables flows towards them, it helps reduce high prices. Norway could add some diodes to the cables so that it only imports and does not export. > And even though Norway exports more power than it imports, that is fantastic for domestic energy pr…
> Norway could add some diodes to the cables so that it only imports and does not export. Does norway really transfer power via DC? that can't be true can it?
https://en.wikipedia.org/wiki/High-voltage_direct_current
HVDC for long distance power sharing makes sense since it is generally more efficient than HVAC. On land, HVDC is more efficient beyond ~500km, but underwater, HVDC is more efficient beyond ~50km:
https://www.electricaldeck.com/2021/08/comparison-between-hv...
Beyond the efficiency benefit, HVDC easily handles transfer of power between grids operating at different frequencies. There are also several other benefits documented at that second link.
Earlier quoted context omitted.
This is never going to be viable. Even existing short undersea cables are difficult (impossible?) to protect from sabotage, let alone one that would span an ocean.
Longer cables need to be thicker if you want resistance to be fixed. If you want 1Ω then by coincidence a 40,000 km cable has a cross section of almost exactly one square meter. If you're putting a significant fraction of global power through that at any sane voltage, you can't use most cutting tools (or indeed electrical motors) near it because the magnetic field is too strong. China is making enough aluminium that…
Money! There is a huge risk in even starting a full engineering study, due to the very real possibilty of another technology bieng adopted and implimented first.