[s1artibartfast]

1) That is a pretty huge cost when wholesale cost of solar is only a few cents to begin with.

2) That equation ignores the time value of money, which is absolutely relevant. A dollar spent today is not the same as a dollar saved 100 years from now.

[SturgeonsLaw]

What's the cost of 12,000 hectares of land in Singapore? Since that is the area that the solar farm on the Australian end will take up

[s1artibartfast]

Im not saying local solar is an option. I'm saying the cost seems incredibly high.

[AtlasBarfed]

Roof or otherwise?

And if you have skyscrapers you have lots of side surface area to capture solar energy as well

[sourdoughness]

Is adding side-panels to skyscrapers a solved problem? It doesn’t seem nearly as easy or mature as rooftop or grid-scale PV.

[ben_w]

For 1, as this crosses timezones, the cost comparison has to be with storage rather than local generation.

2 is fair.