Several standardization efforts for Smart Grids in US and Europe are currently gaining momentum. Even if there are different focuses in US and Europe on what is known as the smart grid, all agree on the fact, that standardization is a key issue for a proper technical interoperability. Hence, a lot of studies and roadmaps pick standardization in the context of smart grids out as a central theme. The various approaches are concentrating on different core areas, depending on the circumstances in which they were elaborated. However, no overview aligning these approaches exists. This contribution takes up on a previous paper where relevant approaches were described. In the meantime, new approaches from different countries and initiatives have come up which are shortly described in this addendum to part1.