The plant SNF1-related kinase (SnRK1) plays a central role in energy and metabolic homeostasis. SnRK1 controls growth upon activation by energy-depleting stress conditions, while also monitoring key developmental transitions and nutrient allocation between source and sink tissues. To obtain deeper insight into the SnRK1 complex and its upstream regulatory mechanisms, we explored its protein interaction landscape in a multi-dimensional setting, combining affinity purification, proximity labeling and crosslinking mass spectrometry. Integration of these analyses not only offers a unique view on the composition, stoichiometry and structure of the core heterotrimeric SnRK1 complex but also reveals a myriad of novel robust SnRK1 interactors.