Effect of the metallization degree for hydrogen reduced DRI on the electric energy consumption, smelter carbon additions and total CO₂ emissions (scope 1 and 2). Basis of calculation same as in 1 production route (d) with grid factor of 80g CO₂/kWh: Pelletizing + Midrex H₂ plant with electric heater + Smelter + BOF for around 1 million ton of crude steel production per year, which is relevant for the heat losses.