Europe is accelerating its shift towards a greener economy with a focus on hydrogen as a clean energy solution for decarbonizing key sectors like transport and heavy industry. Ensuring accurate measurement of hydrogen flow throughout the supply chain is deemed critical for its reliable large-scale utilization. The European Partnership on Metrology is leading the Met4H2 project to establish measurement standards essential for safe hydrogen technology integration, aiming to increase hydrogen's market share to 14% by 2050. Metrology's broader impact on daily life, celebrated on World Metrology Day, includes diverse applications from quantum security to battery technology. Initiatives like MeTISQ address quantum-proof security systems, while LiBforSecUse studies impedance measurement for lithium-ion battery recycling. European collaboration and standardization efforts through EURAMET and the European Partnership on Metrology emphasize the foundational role of metrology in driving sustainable energy solutions.