Sounds like a bad option for you. Don't think I would run an electric fence on an extension cord. You'd have to run electricity out there.We haven’t. The only electric we have out there is for a cozy coop heater that’s plugged into an extension cord then into the garage, which is separate from our house. We did try a heated water bowl our first winter and that shorted out and would’ve burned the whole coop down if my hubby hadn’t been home to hear the pop.
We didn't get chickens for a year because of the projects we wanted to get done.
I understand.