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How about building something similar to a space power station that loads huge batteries, then gravitationally launches them towards ground, while on the other side an automated system launches rockets with empty batteries that docks to the power station?

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Guaranteed to be hugely net energy negative in the energy required to launch the batteries. Think about payload fractions and the huge amount of energy in rocket fuel.

Step 1: Build a space elevator

Step 2: ...

Step 3: Profit!

Launch Loop or Space Fountain are superior. Even the Laser Transmitted Energy solution is. Why? Because they do not have such tremendous costs to install and do not rely on hypothetical yet to develop substances.

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