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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

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

Roof or otherwise?

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

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