Thanks, that's really useful. I guess in my head I had the impression that costs could potentially be static. eg: if you had 10 customers total, each needed to pay $1 to generate electricity to serve their needs. So when you scale up to 100 customers, you can still have everyone pay $1 and come out to the same place.

I totally get the general principle that not everything scales linearly like that. But, I also know very little about electricity generation, so I have no idea where the breakpoints are. (I would also guess that if the demand dips low enough, there could be a case where after decreasing costs for a while, costs actually start to rise again as there is some minimum infrastructure needed but fewer customers to bear the cost.)

Generally, electric networks benefit from economies of scale. So more customers will _lower_ prices per-customer in the long term.