Defossilisation vs Decarbonisation

CEWT Foundation Series Defossilisation vs Decarbonisation: Rethinking the Energy Transition Introduction Climate change is a global problem, yet most current solutions remain local, fragmented, and incremental. The dominant narrative today is “decarbonisation” — reducing emissions wherever possible. While important, this approach often works within an existing fossil-based system. A more fundamental question must be asked: Are we reducing emissions… or are we removing the root cause? This is where the concept of “defossilisation” becomes critical. Decarbonisation vs Defossilisation Decarbonisation focuses on lowering emissions: - Improving efficiency - Adding renewables to the grid - Applying carbon capture or offsets Defossilisation focuses on eliminating fossil inputs entirely: - Replacing fossil fuels in power, heat, and industry - Redesigning systems around renewable energy and closed loops - Treating carbon as a recyclable carrier, not waste In essence: Decarbonisation manages the symptom. Defossilisation addresses the cause. Why Climate Requires a Global System Approach Carbon dioxide does not respect borders. Once emitted, it mixes globally in the atmosphere. This means: - Local reductions do not equal global solutions - Fragmented actions cannot fully solve a systemic problem Today’s approach often involves distributed improvements: - Rooftop solar installations - Wind farms in select regions - Electrification of transport However, heavy industry, fuels, and continuous processes still rely heavily on fossil inputs. Limitations of the Current Renewable Strategy Renewables have scaled rapidly, but their deployment is often: - Distributed rather than systemic - Intermittent rather than continuous - Additive rather than transformative As a result: - Grids still rely on fossil backup - Industrial processes remain fossil-based - Energy systems remain structurally dependent on hydrocarbons This creates a gap between ambition and reality. Defossilisation as the Starting Point Defossilisation reframes the challenge: Can our energy and industrial systems operate without fossil inputs at all? This requires: - Continuous, firm renewable energy systems - Integration of energy, fuels, and industrial processes - Circular carbon systems where CO2 is reused rather than emitted It is not just about adding clean energy. It is about redesigning the system architecture. The Strategic Shift Current mindset: - Reduce emissions where possible - Offset what remains - Improve efficiency Defossilisation mindset: - Eliminate fossil feedstocks - Close carbon loops - Build systems that are inherently low-emission This is a shift from optimisation to transformation. Why This Matters Now We are entering a new phase of the energy transition: - Carbon pricing mechanisms like CBAM are becoming global - Energy demand is rising due to AI, electrification, and industry - Fragmented solutions are reaching their limits The next stage requires system-level thinking. Conclusion Renewable energy is essential, but its role must evolve. The question is no longer: How do we add renewables to the system? The real question is: How do we build a system that operates entirely without fossil inputs? Defossilisation represents this next step. It is not just a technical shift. It is a structural transformation of how energy, industry, and carbon itself are managed.

Why Carbon Recycling Technology (CRT) Is Structurally Superior for Green Iron Production?

Clean Energy and Water Technologies Pty Ltd (CEWT) ABN 61 691 320 028 | ACN 691 320 028 Technology Note Why Carbon Recycling Technology (CRT) Is Structurally Superior for Green Iron Production Date: March 2026 Prepared for: Government agencies, investors, industrial partners Overview Carbon Recycling Technology (CRT) enables zero-emission iron production by combining hydrogen-rich syngas reduction with a closed carbon loop. Unlike hydrogen-only pathways that require large new infrastructure and massive electrolysis capacity, CRT preserves the proven gas-based reduction chemistry used in Direct Reduced Iron (DRI) systems while eliminating net carbon emissions. This approach allows the transition to green iron production using existing industrial infrastructure with significantly lower energy and hydrogen requirements. 1. Uses Proven Gas-Based Iron Reduction Chemistry CRT reduces iron ore using hydrogen-rich syngas (CO + H₂) generated through steam reforming. This is the same fundamental chemistry used in natural-gas-based DRI processes such as those deployed globally by Midrex. Advantages • Proven shaft-furnace technology • Established reduction kinetics • Mature industrial operating experience • Reduced technical risk CRT therefore builds on existing metallurgical practice rather than introducing an entirely new process. 2. Achieves Zero Emissions Through Carbon Recycling In conventional natural-gas DRI: Natural Gas → Reduction → CO₂ released to atmosphere In CRT: Natural Gas / RNG → Reduction → CO₂ captured → recycled → Renewable Natural Gas (RNG) The carbon atom, therefore circulates continuously within the system, acting as a recyclable carrier rather than being emitted. This closed molecular loop allows CRT to achieve net-zero emissions without eliminating carbon from the process chemistry. 3. Dramatically Lower Hydrogen Requirement Hydrogen-only ironmaking requires hydrogen to supply both: • the reducing gas, and • the energy source for the process This results in very large electrolysis capacity requirements. CRT instead uses hydrogen-rich syngas, with only a small renewable hydrogen trim required to maintain the carbon recycling loop. Benefits • significantly smaller electrolysers • lower renewable electricity demand • reduced hydrogen storage requirements • improved economic feasibility 4. Compatible With Existing Industrial Infrastructure Hydrogen-only steelmaking requires major changes to industrial systems, including: • new hydrogen production infrastructure • new fuel supply networks • modified furnaces and process systems CRT maintains compatibility with existing infrastructure, including: • gas reforming systems • DRI shaft furnaces • gas handling and distribution networks • high-temperature industrial heat systems This allows decarbonisation to proceed faster and at lower capital cost. Structural Advantage of CRT Traditional decarbonisation approaches attempt to remove carbon from industrial energy systems. CRT instead recycles carbon as a molecular energy carrier, while renewable hydrogen provides the incremental energy required to maintain the loop. This architecture preserves the thermodynamic advantages of carbon-based fuels while eliminating net emissions. Conclusion Carbon Recycling Technology provides a practical pathway for green iron production by combining: • proven gas-based reduction chemistry • closed-loop carbon recycling • minimal hydrogen requirements • compatibility with existing infrastructure This system architecture enables heavy industry to transition toward zero-emission production while maintaining operational reliability and economic viability.

Why Carbon Recycling Technology (CRT) Is Structurally Superior for Green Iron Production

Clean Energy and Water Technologies Pty Ltd (CEWT) ABN 61 691 320 028 | ACN 691 320 028 Technology Note Why Carbon Recycling Technology (CRT) Is Structurally Superior for Green Iron Production Date: March 2026 Prepared for: Government agencies, investors, industrial partners Overview Carbon Recycling Technology (CRT) enables zero-emission iron production by combining hydrogen-rich syngas reduction with a closed carbon loop. Unlike hydrogen-only pathways that require large new infrastructure and massive electrolysis capacity, CRT preserves the proven gas-based reduction chemistry used in Direct Reduced Iron (DRI) systems while eliminating net carbon emissions. This approach allows the transition to green iron production using existing industrial infrastructure with significantly lower energy and hydrogen requirements. 1. Uses Proven Gas-Based Iron Reduction Chemistry CRT reduces iron ore using hydrogen-rich syngas (CO + H₂) generated through steam reforming. This is the same fundamental chemistry used in natural-gas-based DRI processes such as those deployed globally by Midrex. Advantages • Proven shaft-furnace technology • Established reduction kinetics • Mature industrial operating experience • Reduced technical risk CRT therefore builds on existing metallurgical practice rather than introducing an entirely new process. 2. Achieves Zero Emissions Through Carbon Recycling In conventional natural-gas DRI: Natural Gas → Reduction → CO₂ released to atmosphere In CRT: Natural Gas / RNG → Reduction → CO₂ captured → recycled → Renewable Natural Gas (RNG) The carbon atom therefore circulates continuously within the system, acting as a recyclable carrier rather than being emitted. This closed molecular loop allows CRT to achieve net-zero emissions without eliminating carbon from the process chemistry. 3. Dramatically Lower Hydrogen Requirement Hydrogen-only ironmaking requires hydrogen to supply both: • the reducing gas, and • the energy source for the process This results in very large electrolysis capacity requirements. CRT instead uses hydrogen-rich syngas, with only a small renewable hydrogen trim required to maintain the carbon recycling loop. Benefits • significantly smaller electrolysers • lower renewable electricity demand • reduced hydrogen storage requirements • improved economic feasibility 4. Compatible With Existing Industrial Infrastructure Hydrogen-only steelmaking requires major changes to industrial systems, including: • new hydrogen production infrastructure • new fuel supply networks • modified furnaces and process systems CRT maintains compatibility with existing infrastructure, including: • gas reforming systems • DRI shaft furnaces • gas handling and distribution networks • high-temperature industrial heat systems This allows decarbonisation to proceed faster and at lower capital cost. Structural Advantage of CRT Traditional decarbonisation approaches attempt to remove carbon from industrial energy systems. CRT instead recycles carbon as a molecular energy carrier, while renewable hydrogen provides the incremental energy required to maintain the loop. This architecture preserves the thermodynamic advantages of carbon-based fuels while eliminating net emissions. Conclusion Carbon Recycling Technology provides a practical pathway for green iron production by combining: • proven gas-based reduction chemistry • closed-loop carbon recycling • minimal hydrogen requirements • compatibility with existing infrastructure This system architecture enables heavy industry to transition toward zero-emission production while maintaining operational reliability and economic viability.

Carbon Recycling Technology (CRT): An Enabling Platform for Green Iron and Industrial Decarbonisation

Carbon Recycling Technology (CRT): An Enabling Platform for Green Iron and Industrial Decarbonisation Clean Energy and Water Technologies Pty Ltd (CEWT) The global energy transition is often framed as a challenge of generating clean electricity. While this is essential, heavy industries such as steel, aluminium, magnesium, and silicon production operate on fundamentally different principles. These industries do not simply consume electricity; they rely on high-temperature chemical energy carriers and reducing gases to transform raw materials into useful products. Steelmaking illustrates this challenge clearly. Modern Direct Reduced Iron (DRI) processes require hot reducing gases to convert iron oxide into metallic iron. Even in hydrogen-based DRI systems, electricity must first produce hydrogen through electrolysis, and then additional energy must heat that hydrogen to approximately 800–900 °C before it can act as a reducing agent in the shaft furnace. For a typical 2 million-tonne-per-year green-iron plant, hydrogen production alone may require 750–800 MW of electrolysis power, with an additional 50–60 MW required simply to heat the hydrogen to the required reaction temperature. In other words, the system must manufacture both the molecule and its thermal state before metallurgical reduction can begin. Conventional MIDREX plants avoid this inefficiency by generating hot reducing gas directly in the reformer, where methane reforming simultaneously produces hydrogen, carbon monoxide, and the required process temperature. This architecture—where chemistry and heat are created in the same step—has made gas-based DRI one of the most efficient ironmaking routes available. Carbon Recycling Technology (CRT) seeks to preserve this industrial architecture while eliminating the need for fresh fossil inputs. By integrating renewable hydrogen with recycled carbon in a closed-loop system, CRT produces hydrogen-rich molecular energy carriers that can deliver heat, reduction chemistry, and power generation within the same platform. Rather than treating electricity generation, hydrogen production, and industrial heat as separate systems, CRT integrates them into a single enabling energy infrastructure. This platform can supply: • firm renewable power • hydrogen-rich reducing gases • high-temperature industrial heat • recyclable carbon-based fuels Once such an energy platform exists, green iron production becomes a natural extension. A DRI shaft furnace can simply be integrated into the system, using the hydrogen-rich reducing gases already available to convert iron ore into metallic iron. This approach highlights an important principle of industrial decarbonisation: while electricity powers machines, molecules transform materials. Heavy industry therefore, requires not only clean electricity but also scalable pathways to produce the high-temperature chemical energy carriers needed for metallurgical and industrial processes. Carbon Recycling Technology provides a pathway toward such an integrated system—supporting green iron production while simultaneously enabling the broader decarbonisation of energy-intensive industries.

CEWT's defossilastion Framework