A blended finance instrument that de-risks first-mover green hydrogen adoption for cement, steel, and chemicals companies. HydrogenBridge pairs a carbon contract-for-difference (CfD) guaranteeing $80/tonne CO₂ shadow price with a concessional loan covering 40% of electrolyzer capital. First-mover companies commit to published decarbonization roadmaps. Reduces required carbon price from $150-200 to $80-100/tonne, unlocking deployment in 2025-2028.