Preface - Elmegaard, B.; Sciubba, E.; Blanco-Marigorta, A.M.; de Gran Canaria, P.; Jensen, J.K.; Markussen, W.B.; Meesenburg, W.; Kofler, R.; Rasmussen, M.C.; Amano, Y.; Arnas, O.; Ayalon, O.; et al. (Proceedings of ECOS 2022 - 35th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, 2022)