Map of electricity consumption around the Mediterranean
Oh yeah well . . . What about . . The, um. Guy that got hit by lightning.
Or that guy that walked across his decked out war tent in Germania on a fine bear skin carpet, reached out his hand and shocked a visiting Gaul who was so surprised and alarmed that it set off another season of armed conflict on the northern border.
Emperor Carus out here inventing electricity
EurekksshAAahhhhhhhhhhh
What about alchemists that were unknowingly producing electric currents in those clay pot battery things?
Ah, there's the trick - it's mapping electricity CONSUMPTION, not electricity PRODUCTION.
No wonder the Roman empire stopped where it did, they were surrounded by space age Atlantians.