You should have a generator. Not just for the fish, they are great survival tools. I have one at our place in the Olympic Forests in Washington for the extreme weather events we sometimes face in the winters. We also have one at our place down in Arizona as the monsoons there are biblical magnitude flooding events and cause frequent power outages.
It can help you preserve your food, cook food, run all sorts of appliances and tools. Charge cell phones to later call for help. I highly recommend owning a generator no matter where you live.