The Early Adoption Case (EAC) of our newly released Issues in Focus: Energy Implications of Potential Iron and Steel-Sector Decarbonization Pathways explores the effects on energy demand of the steel industry becoming an early adopter of renewable hydrogen and increasing the share of steel produced using electric arc furnaces in China, OECD Europe, Japan, and South Korea. The EAC assumes renewable-sourced hydrogen reaches cost parity with fossil fuel-based hydrogen in 2030. This report is part of our larger International Energy Outlook 2021 (IEO2021).