MHI Post-Combustion Capture, 800, 000 Tonne Heidelberg Project, 95% Capture Rate, and 3 Major Cement Deals (2021 to 2026)

CCUS Commercial Scale, MHI’s 800, 000 Tonne Heidelberg Project

The progression of carbon capture in the cement industry has shifted from policy frameworks and feasibility studies to commercial-scale execution, contingent on the simultaneous build-out of shared CO₂ infrastructure. This dependency, where proven capture technology requires government-backed transport and storage networks to become commercially viable, is the central mechanism defining the sector’s growth. The award of the Front-End Engineering Design (FEED) contract to Mitsubishi Heavy Industries (MHI) and Worley for the Heidelberg Materials Padeswood project exemplifies this model, pairing mature technology with a regional decarbonization cluster.

• Between 2021 and 2024, industry activity focused on pre-FEED studies and policy development, establishing the groundwork for large-scale projects. The UK government’s selection of the Hy Net cluster in its Track-1 sequencing process was a critical non-commercial milestone that enabled projects like Padeswood to advance. During this period, the Brevik CCS project in Norway, another Heidelberg Materials facility, moved into construction, serving as a 400, 000 tonne per year precursor.
• From 2025 onwards, the focus has moved to execution and the materialization of infrastructure risk. The Padeswood project, designed to capture 800, 000 tonnes of CO₂ annually, is now in the engineering phase, with its success directly tied to the development of the Hy Net North West pipeline for transport and offshore storage. This phase validates the technology’s readiness but also exposes the project’s economics to infrastructure timelines and costs.
• The range of commercial applications for MHI technology, including a feasibility study with Mitsubishi UBE Cement Corp in Malaysia and a FEED study for a 1, 600, 000 tonne per year US cement plant, demonstrates its adaptability. However, each of these projects relies on the creation of a regional CO₂ value chain, confirming that technology deployment is gated by infrastructure availability, not technology maturity.

$232 M+ CAPEX, MHI Cement Project Costs and US Cancellations

The economic viability of cement carbon capture projects is not determined by technology costs alone but by a combination of capital expenditure, carbon pricing, and direct government support, making them highly sensitive to policy shifts. The estimated capital expenditure for the Padeswood plant, potentially exceeding $232 million based on industry averages of $290 per ton, necessitates a robust business case underpinned by long-term revenue certainty. While the technology is proven, financing remains the primary hurdle, with government support mechanisms serving as the critical de-risking tool.

• Operational costs add significant financial pressure, with estimates for cement capture ranging from $11 to $132 per tonne of CO₂. This cost, combined with the capital investment, results in a 75-150% production cost premium for near-zero emissions cement, a gap that market demand alone cannot close.
• The UK’s Industrial Carbon Capture (ICC) business model, a form of Contract for Difference (Cf D), is designed to bridge this economic gap by providing a guaranteed price for captured carbon. This policy instrument provides the revenue stability required for projects like Padeswood to secure private financing against the high upfront CAPEX.
• The fragility of this public-private financing model was highlighted in mid-2025 when the U.S. Department of Energy cancelled $3.7 billion in decarbonization grants. This decision impacted several demonstration projects, including one involving Cemex, illustrating how shifts in government funding priorities can halt progress despite technological readiness. Other major players like Exxon Mobil continue to advance large-scale hub projects, but the financing structure remains complex.

Table: Key Investments and Financial Headwinds in Cement CCUS

MHI’s Padeswood Ecosystem with Worley and Heidelberg

Large-scale CCUS projects are executed through a partnership ecosystem that distributes risk and integrates specialized expertise across technology, engineering, and operations. The Padeswood project is structured around a core group of partners, with MHI as the technology licensor, Worley as the engineering delivery partner, and Heidelberg Materials as the asset owner and operator. This collaborative framework is essential for managing the complexity of integrating a chemical processing plant into an existing industrial facility and connecting it to third-party infrastructure.

• In December 2025, MHI and Worley formalized their delivery partnership to provide the full-scale carbon capture facility for the Padeswood plant. This builds on a prior pre-FEED contract, indicating a phased, de-risked approach to project development from initial design to full execution.
• The project’s selection in the UK’s Track-1 cluster sequencing in September 2025 represents a critical public-private partnership. This government endorsement unlocked the path to construction and confirmed the project’s integration with the shared Hy Net North West infrastructure, a crucial element for its economic model.
• MHI is also expanding its partnership model globally. A October 2024 collaboration between Mitsubishi UBE Cement Corp and the Malaysian government to conduct a CCS feasibility study shows a replication of the strategy to anchor projects with public sector support for infrastructure development.

Table: MHI and Heidelberg Cement Decarbonization Partnerships

UK Leadership, MHI’s Padeswood Project in the Hy Net Cluster

The United Kingdom has established a leading position in deploying CCUS for industrial decarbonization through its proactive industrial cluster strategy, a model now being watched globally. The Padeswood project’s location within the Hy Net North West cluster is not coincidental but a direct result of a policy framework designed to concentrate and support decarbonization efforts in industrial heartlands. This geographic clustering de-risks individual projects by socializing the high cost of CO₂ transport and storage infrastructure.

• Between 2021 and 2024, the UK government laid the policy foundation by identifying and sequencing industrial clusters. The selection of Hy Net as a “Track-1” cluster provided the necessary signals for companies like Heidelberg Materials to move forward with their investment plans, knowing that shared infrastructure would be developed in parallel.
• From 2025, the focus in the UK has shifted to the physical build-out of these clusters. The Padeswood project will connect to a pipeline that transports CO₂ to depleted gas fields under the Irish Sea. The project’s success is now inextricably linked to the on-time, on-budget delivery of this shared infrastructure.
• While the UK and Europe are advancing first-of-a-kind projects, similar hub-based approaches are emerging elsewhere. A 1, 000, 000 tonne/year project by Sinopec in China is already operational, and studies are underway in Malaysia and the US. These efforts confirm that the “cluster” model is the consensus approach for making industrial CCUS economically feasible.

Technology Maturity, MHI’s TRL 9 Post-Combustion Capture

The technology selected for the Padeswood plant, MHI’s Advanced KM CDR Process™, is commercially mature and represents a low-risk choice for a first-of-a-kind industrial application at this scale. The technology’s designation as Technology Readiness Level (TRL) 9 signifies it is a proven system with extensive operational history, primarily in the power and chemical sectors. Its application to the cement industry, which has unique flue gas characteristics, is the next logical step in its deployment.

• The core of the technology is the KS-21™ amine solvent, which offers lower energy consumption for regeneration and higher resistance to degradation compared to conventional solvents. This provides a clear operational cost advantage and was a key factor in its selection for a project where economic margins are tight. The system is designed for a 95% capture rate, meeting the threshold for deep decarbonization.
• The period from 2021 to 2024 saw the completion of FEED and pre-FEED studies that adapted the technology to the specific conditions of a cement plant flue gas stream. These engineering studies validated its performance and cost estimates, clearing the way for a final investment decision.
• From 2025 onward, the challenge is not technological but integrative: installing the capture unit into an active cement plant and ensuring it operates reliably within the broader Hy Net network. The successful operation of Padeswood will provide a definitive, large-scale validation of post-combustion capture for the cement sector, de-risking future deployments for JFE Steel and other industrial partners.

SWOT Analysis, MHI and the Cement CCUS Market

The strategic position of MHI and the broader cement CCUS market is defined by the strength of a mature technology platform against the persistent threat of high costs and policy dependency. The Padeswood project serves as a clear case study of these dynamics, highlighting how technological readiness can be unlocked by supportive policy and infrastructure development. The transition from planning to execution has shifted the primary risk from technology to project finance and infrastructure delivery.

Table: SWOT Analysis for Post-Combustion Capture in Cement

MHI 2026 Outlook, Hy Net Infrastructure and Market Demand

The critical factor to monitor for the Padeswood project and the broader cement CCUS market is the execution of shared infrastructure projects and the stability of the policies that underwrite their economics. The success of MHI’s technology is now less about its own performance and more about the timely delivery of the Hy Net pipeline and storage sites. Any delays in this interdependent infrastructure will have a direct and material impact on the project’s commissioning date and financial returns.

• If the Hy Net infrastructure build-out proceeds on schedule through 2026, watch for Heidelberg Materials to reach a final investment decision and begin full construction at Padeswood. This would signal confidence in the UK’s cluster model and likely trigger similar decisions at other industrial sites within the cluster.
• Monitor the market demand and price premium for Heidelberg’s evo Zero net-zero cement. Strong uptake driven by green public procurement and corporate buyers would validate the business case for producing a higher-cost, low-carbon product, encouraging other cement producers like Eni and competitors to accelerate their plans.
• Conversely, a slowdown in infrastructure development or a weakening of carbon pricing under the UK/EU ETS would be a significant negative signal. This could delay Padeswood and other Track-1 projects, confirming that the current momentum is entirely contingent on a stable and supportive policy environment.

The questions your competitors are already asking

This report covers one angle of commercial-scale carbon capture for cement. The questions that matter most depend on your work.

• What is actually happening with the Heidelberg Padeswood project since MHI and Worley began the engineering phase?
• What is the outlook for commercial-scale carbon capture in the cement sector, given its dependency on infrastructure like the HyNet North West pipeline?
• MHI’s post-combustion capture performance. What are the technical and commercial risks in scaling from the 400,000 tpa Brevik project to the 800,000 tpa Padeswood plant?
• Which major cement operators, besides Heidelberg Materials, are adopting MHI’s post-combustion capture technology for their decarbonization plans?

This report does not answer these. Enki Brief Pro does.

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