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* '''[[Solar panels]]:''' Only if they can be made cheaply [[solar/challenge 1|without scarce minerals]] (it's ok if the efficiency is lower). Need to mass produce enough to cover every [[rooftop solar|rooftop]]. Need [[energy storage]]: [[sodium-ion batteries]] or similar. | * '''[[Solar panels]]:''' Only if they can be made cheaply [[solar/challenge 1|without scarce minerals]] (it's ok if the efficiency is lower). Need to mass produce enough to cover every [[rooftop solar|rooftop]]. Need [[energy storage]]: [[sodium-ion batteries]] or similar. | ||
* '''[[Wind power]]:''' Only to generate [[hydrogen gas]] (which can be used as fuel instead of [[natural gas]]). Otherwise too intermittent, too far away for power lines. | * '''[[Wind power]]:''' Only to generate [[hydrogen gas]] (which can be used as fuel instead of [[natural gas]]). Otherwise too intermittent, too far away for power lines. | ||
* '''[[Nuclear]]:''' Only if it's [[thorium]]. Fusion is a pipe dream, uranium-235 is too scarce, and uranium-238 | * '''[[Nuclear]]:''' Only if it's [[thorium]]. [[nuclear fusion|Fusion]] is a pipe dream{{x|although it's ultimately the best choice in the ''distant'' future}}, [[conventional nuclear power|uranium-235]] is too scarce, and [[uranium-238]] reactors have too many weapons proliferation concerns. | ||
In any case, it becomes a lot easier if we '''[[public transit|drive]] [[walkability|less]]''' (some careers are an exception obviously) and '''[[frugalism|buy less]]''' new stuff. Those factors alone account for 2/3 of the world's [[energy]] consumption. | In any case, it becomes a lot easier if we '''[[public transit|drive]] [[walkability|less]]''' (some careers are an exception obviously) and '''[[frugalism|buy less]]''' new stuff. Those factors alone account for 2/3 of the world's [[energy]] consumption. |