I think there is a more nuanced way of presenting Ramsay/Boiteux pricing that makes it less unfair.
For example, if you were to take a short run marginal cost (SRMC) approach then, to be efficient, the price per unit of electricity should include SRMC of networks (losses and congestion). The residual network costs (after recovery of SRMC costs) should be charged to consumers such that no consumer is asked to contribute 1. more than their standalone cost (a contribution that induces them to disconnect from the network entirely) and 2. less than the incremental cost to the network of their connection, 3. according to a method that affects their real time decisions to consume or generate electricity.
Conforming with those rules still allows a wide range of allocation methods that could be argued are fair. For example, it might appear fair to allocate a higher fixed charge according transformer or fuse size. Alternatively, the residual could be recovered by taxes - land taxes, council rates, income taxes.
Economists can only tell you what is efficient. If you want fair you need to ask a politician. Just saying.
I think there is a more nuanced way of presenting Ramsay/Boiteux pricing that makes it less unfair.
For example, if you were to take a short run marginal cost (SRMC) approach then, to be efficient, the price per unit of electricity should include SRMC of networks (losses and congestion). The residual network costs (after recovery of SRMC costs) should be charged to consumers such that no consumer is asked to contribute 1. more than their standalone cost (a contribution that induces them to disconnect from the network entirely) and 2. less than the incremental cost to the network of their connection, 3. according to a method that affects their real time decisions to consume or generate electricity.
Conforming with those rules still allows a wide range of allocation methods that could be argued are fair. For example, it might appear fair to allocate a higher fixed charge according transformer or fuse size. Alternatively, the residual could be recovered by taxes - land taxes, council rates, income taxes.