Power density by Vacliv Smil.
It's a fairly information dense book but it's talking about different energy sources and how much space they take up physically on planet Earth.
I've only read the first few chapters but so far they've talked about early England and their transition from wood to coal to coal coke In relation to their production of pig iron.
never heard of coal coke and pig iron, really interested to learn more about energy
I would start with his other book, "Energy and Civilization." It talks mostly about how energy use ramps up as civilization grows and how we need to be using more efficient forms of energy.
I guess you don't have to start with that one, but it's also a pretty interesting book.
