Also the paper Power Flow Forecasts at Transmission Grid Nodes Using Graph Neural Networks has been published in the Special Issue Smart Grid and AI of the Open Access Journal Energy and AI. It is a collaborative work with the Fraunhofer IEE Kassel developed by Dominik Beinert and Clara Holzhüter.
https://www.sciencedirect.com/science/article/pii/S2666546823000344?via%3Dihub