Peggie Hall wrote:

The way it works is, marina is the member/subscriber to the co-cop...and
it's the marina who gets the "master bill" from the co-op. All the lines
going to the docks and the meters to each boat are the marina's...the
meters at each slip are what the marina uses to itemize how much power
each boat is using...

Ah so! The marina I'm moored in normally provides water and electric as
part of one's slip rental but if you live aboard they charge a somewhat
arbitrary additional fee based on experience and boat size (ie, expected
useage). Most sailors only spend a few hours a month using services
because they're either home or out sailing so the cost is negligable. A
few like me spend most weekends working on our boats but aren't charged.
Fewer yet live aboard and pay extra.