I can tell you exactly how much it cost a campground - had several folks who were in a similar situation...several lot owners moved in to the campground trying to save money. Our campground is not year round, there's no water off-season, but the electricity is on, and since it's a HOA, access to owner's lots is open.
We had multiple people stay even though it was off-season and that year the campground's electric bill was about 15,000 higher for the winter season.
To give you an idea of how much the campground normally pays for electric - in a good year it's about $300,000. One month during a hot July we had to spend $35,000. I believe the kwh cost is about 12 cents.
There are over 800 lots in this campground.
