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Seems that you don't understand the problem. I try to simplify it for you. Point out a single energy extraction working technology, that pays its cost. Aka: "co
by alexey_denisov 9y ago
Seems that you don't understand the problem. I try to simplify it for you.
Point out a single energy extraction working technology, that pays its cost. Aka: "constructing wind electricity generator using only energy outputs from this generator". (You can replace electricity generator with solar cell, algae, anything.)
- fallingfrog 9y agoOver the lifetime of solar panels they will produce dozens of times the energy required to make them.
- alexey_denisov 9y agoLet us imagine a world, that is powered by solar panels. The only source of energy that we have is electricity from solar panels. So it would be a world poered by electricity. How would you make vehicles? I mean you need to melt metal, produce concrete (for buildings) etc. You would need to power the whole infrastructure by electricity. It might be possible, but it is not easy, and its technological feasibility is not demonstrated. As soon as you start to think about the whole cycle, it becomes clear that having electricity form solar panels is not enough.
- andperseand 9y agoHydroelectric probably wins on cost benefit ratio. Or perhaps geothermal?