So what's the answer?
There isn’t one.
It’s a predicament. The world has physical limits. Who’da thunk?
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See that answer is a no answer. It's kind of like a sinking ship and filling up a lifeboat. If we continue what we are doing it's not going to end well. There are are a limited number of people who can fit in a lifeboat before it is overloaded and would sink too. What we need to do is something a bit different such as use the resources we have, (the sinking ship) to build additional before it sinks.
That's what we are doing.
Solar and Wind - Is going to help a little.
Hydro- We've built all we can.
Coal/fossil fuels - Word when there were a lot less people in the world and we didn't use very much. But not working for us now.
Nuclear - We would be in much better shape, but people have made some very stupid mistakes. But still, we have 500 years of
nuclear fuel we don't know what to do with. And it's going to be with us for millions upon millions of years. (But I won't.)
Then there's Next Gen Nuclear - No long lived radioactive waste. It's renewable, green, non-polluting and we have oceans filled with fuel. Seems like the way to go to me.