> This is because if you have batteries which cause a back flow during a power outage to the power station, an electrical worker could get shocked down the road.
There is. The same issue is present with home generators, and most cities require they be installed by a licensed electrician who will ensure it doesn't power the grid in an outage.
I would think so, and I would hope they would implement it. Especially considering the benefits to society of having people who are more prepared and self-sufficient, I would hope that safety would be only one of the reasons they wouldn't rely on people obeying some regulation for their worker's safety.
Surely there is some safe way of preventing this?