Also on energy usage:
Why does it matter how much electrical energy it uses? We know how to harness a near infinite amount.
Also on energy usage:
Why does it matter how much electrical energy it uses? We know how to harness a near infinite amount.
This is a silly thing to say while there's still quite so much CO2 being emitted from electricity production.
Are you talking about nuclear?
Some estimate we're currently only at Kardashev 0.8, harnessing about 80% of what energy from the Sun hits the Earth, while others argue that this percentage is much lower.
Ideas are easy, implementation is hard.
Edit for clarity.
80% seems super high, unless by 'harnessing' you also mean things like 'the sun energy warms up the ocean allowing fish to live which we then consume for some% of the energy that sun sent'.
I'd be pretty surprised if efficiently used energy / energy hitting the earth from the sun was >20%.
The numbers I'm seeing are 174 petawatts hits Earth and the world uses 18 terawatts of energy.