I don't understand the 'gold plating' argument. What's the implication? That the local poles and wires are over-specced? Straight question - what's meant by 'gold plated' in this sense? (Remember that outside the suburbs, the 'wires' are run by companies separate from the retailers and their tariffs are set by a regulator based on a rate-of-return formula.)
I used to run a (very small !!) renewable energy generation company and honestly, when I looked at the 'poles and wires' (local) and 'wires' (regional) physical network, the worry was that it was going to fall down, rather than be 'gold plated'. Lots of areas on the regional network that weren't available to us, as the wires and other infrastructure couldn't handle additional load.