"Energy demand" is a huge stretch. It is just electricity. It does not cover energy used in transportation (car, ships, flight) and energy used to produce imported goods. It also does not cover recycling and renewal. Even food gets like 60% of energy from fertiliser, that is not included here!
Anyway, I am just silly old person. So let's march towards bright future. We need solar powered battle tanks and solar powered fighter jets!
Anyway, I am just silly old person. So let's march towards bright future. We need solar powered battle tanks and solar powered fighter jets!