The article discusses the substantial expansion of the QM9 dataset, adding G4MP2 enthalpies for 9,841 molecules and a dataset of 10,373 reactions related to (de)hydrogenation, focusing on Liquid Organic Hydrogen Carriers (LOHCs). This new dataset named QM9-LOHC aims to provide a resource for exploring hydrogen storage technologies. The challenges of hydrogen storage and transport due to low volumetric energy density and gaseous handling complexities are highlighted. LOHC systems, which involve hydrogenation and dehydrogenation reactions of organic carriers, are identified as crucial for efficient and safe hydrogen storage. The article categorizes LOHC systems into conventional, mixtures of LOHCs, electrochemical LOHCs, and alkali metal-LOHCs, each offering unique advantages for hydrogen storage. The research emphasizes the importance of studying hydrogenation reactions to advance LOHC technology, focusing on thermodynamic and kinetic properties. By utilizing various LOHC systems, researchers aim to address efficiency, cost, and practicality concerns related to hydrogen storage. The article emphasizes the significance of high-fidelity data for molecular discovery and the optimization of both conventional and innovative LOHC systems. Overall, the sentiment towards hydrogen in the article is positive, highlighting the potential of hydrogen storage technologies and the diverse approaches within the field of LOHC research.