Battery, PV and heat-pump technologies were characterized using a Coherent Energy Demonstrator Assessment (CEDA) approach. In all cases the calibrated simulation models closely matched the measured data; however it is not possible to conclusively say that models, based on a single demonstrator, represent all existing and future cases of a technology. A possible solution would require additional operators to characterize and report the performance of a given technology, in a standardized way, and the resulting data could then contribute to an evolving set of representative CEDA archetypes to be used in studies of energy systems.