Timing is tough to predict, but obviously things like lightening rods on tall buildings are pretty predictable and consistent targets. Having said that, I think storing the charge creates additional issues. For example, the most innovative means of storing excess electricity involves pushing water uphill.
To a possibly recognizable polka tune …
♫ Call down the lightning,
We’ll make a monster for fun.
Call down the lightning,
We’ll turn him loose when we’re done.
It’s very frightening,
See how the villagers run!
Throw the switch and call the lightning
Before the storm is done! ♫
P & K Foglio, “Girl Genius”