I know there is a number of postings on the general topic, but trying to go a different direction here.
My park is in the midwest and every winter we lose a few meters or at least the freeze plates to the cold.
Trying to think of something that takes the human element out of it, as people are lazy and unreliable (including myself BTW!).
Like heat tape tied directly into a breaker box that comes on when the temp drops below a certain level and keeps the lines/meters from freezing.
i.e. requirements are something the comes on automatically to prevent pipes/meter from being damaged. Tenant doesn't have to remember to plug something in or open the faucet slightly. But doesn't run all year long wasting electricity.