In theory, any Electric-type can whip out a thunderstorm with enough motivation. Though only a few are powerful enough to do it all by themselves. Besides, group-made thunderstorms are more fun. Another thing I can do in a group is make the tiniest of my evolutionary brethren ridiculously powerful, but I can only do it with help of the other Eeveelutions. Otherwise the little Eevee would presumably only get a big boost in speed.