Discussion on question by Sam Cottle: Hydrogen-propelled space elevator

And once again, the top of a 400 km tower is not in orbit. It is practically stationary with respect to Earth's surface, and will take as much thrust to hold up as it would take to hover a rocket of the same mass 400 meters above its launch pad.

and so this goes the way of every Great Idea submitted to Space Exploration SE: it has a number of obvious issues, we explain some of them, the poster defends them, etc etc etc. Go do an introductory design on this. Estimate how much it will weigh, how much fuel it will consume, compare that to how much fuel the world actually produces in the first place, and check what will happen to the payloads when they reach the end. Your design's nonsense and people have been very kind pointing it out to you.