Thought I knew but could not remember it.
So from good old Wiki, for my and maybe your elucidation, here it is.
A flux capacitor, consists of a rectangular-shaped compartment with three flashing Geissler-style tubes arranged in a "wye" configuration. A stainless steel casing has a direct and influential effect on the "flux dispersal".
A flux capacitor requires 1.21 gigawatts of electrical power to operate, which is roughly equivalent to the power produced by 15 typical commercial airplane jet engines.
So there you have it. Now you know too.
So go check your pension. ----- It won't take long.