ArcelorMittal invested $5 million in H2Pro through its XCarb Innovation Fund as part of a Series B funding round. H2Pro's revolutionary E-TAC technology achieves over 95% energy efficiency compared to 70% for conventional water electrolysis systems. The company targets hydrogen production costs below $2 per kilogram by 2023 & under $1 per kilogram by 2030, potentially transforming industrial decarbonization economics.