There were civilisations in the Middle East, China and South America 9,000 years ago, they didn't have electricity either.
To be fair to captain caveman, his user name suggests he knows what he's talking about here. (And yes, I am just being nice because I don't want to get clubbed to death or my cat to be made into a leotard.)
Which, by Patty's reckoning of managing 1900 years without it would mean they had electricity about 7,100 years ago.
If Patty ever gets ill, while travelling in China, they're ready for him... please log in to view this image