Extreme H, the green hydrogen racing championship, achieved a significant milestone with the successful field test of its Hydrogen Power Unit 2 (HPU2) at Siemens Energy's UK facility in Newcastle. The HPU2, developed by GeoPura and integrated with Power Logistics, delivers scalable, quiet, and zero-emission power with higher density and lower deployment costs compared to its predecessor. This advancement enables powering 1,200 UK homes for a day, making it suitable for off-grid energy applications. Extreme H plans to transition all its race-related operations to fully emission-free energy by utilizing green hydrogen from ENOWA. The collaboration between GeoPura, Power Logistics, and ENOWA showcases the potential of technical partnerships in driving energy transitions. By focusing on green hydrogen, Extreme H not only advances its own series but also contributes to global sustainability goals. The article also highlights the growing importance of green hydrogen in decarbonizing hard-to-electrify sectors and mentions leading companies in green hydrogen development like Plug Power Inc. and Bloom Energy Corporation.