The growing adoption of distributed energy resources (DERs) across Australia may represent the start of a transition of Australia's power system from a centraliased generation model towards an interconnected set of embedded microgrid systems. In these systems, local trading of coincident generation and consumption is being explored, with the idea that this would encourage consumer engagement, provide more choice, and incentivise reduced use of networks (via increased balancing of loads and generation locally). However coincidence of generation and load over short time frames, and hence network benifit, can be difficult to determine using existing metering systems.