I think taking high voltage, high current that would need to transfer in less than a second exceeds anything we’re remotely capable of.
Secondarily, while we think a bolt of lightening has insane amounts of energy, I’ve heard it can only power a very medium sized city for about 1 minute. Which is still a lot. But kind of puts it in persepective of just how many (completely unpredictable) bolts of lightening you’d need to capture to have any kind of efficency.
Yep, by many orders of magnitude.
Also see #7 above.
The idea would be to make them predicable - create the circumstances that make a lighting bolt, and then capture it in a bottle when it sparks.