Global green steel markets enter transformative 2026 as Europe's Carbon Border Adjustment Mechanism implementation forces precise emissions quantification, fundamentally shifting from aspirational branding toward measurable decarbonization. Fastmarkets' analysis shows Europe's green steel premium remained stable at €100-170 ($117-199) per metric ton, while regulatory uncertainty prompted project delays across Salzgitter, ArcelorMittal, Thyssenkrupp & SSAB facilities. Middle East-North Africa region commands strongest low-carbon production positioning through electric arc furnace operations achieving sub-one metric ton CO₂ emissions, yet faces product mix mismatches as Europe imports predominantly flat products. China demonstrates technical capabilities producing green steel meeting benchmarks, though Carbon Border Adjustment Mechanism costs create competitiveness concerns. United States enters policy fragmentation period as Trump administration retreats from federal green-industry goals.