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A Perspective on Hydrogen Investment, Deployment and Cost Competitiveness
Feb 2021
Publication
Deployment and investments in hydrogen have accelerated rapidly in response to government commitments to deep decarbonisation establishing hydrogen as a key component in the energy transition.
To help guide regulators decision-makers and investors the Hydrogen Council collaborated with McKinsey & Company to release the report ‘Hydrogen Insights 2021: A Perspective on Hydrogen Investment Deployment and Cost Competitiveness’. The report offers a comprehensive perspective on market deployment around the world investment momentum as well as implications on cost competitiveness of hydrogen solutions.
The document can be downloaded from their website
To help guide regulators decision-makers and investors the Hydrogen Council collaborated with McKinsey & Company to release the report ‘Hydrogen Insights 2021: A Perspective on Hydrogen Investment Deployment and Cost Competitiveness’. The report offers a comprehensive perspective on market deployment around the world investment momentum as well as implications on cost competitiveness of hydrogen solutions.
The document can be downloaded from their website
Earth Abundant Spinel for Hydrogen Production in a Chemical Looping Scheme at 550°C
Jun 2020
Publication
Operating chemical looping process at mid-temperatures (550-750 oC) presents exciting potential for the stable production of hydrogen. However the reactivity of oxygen carriers is compromised by the detrimental effect of the relatively low temperatures on the redox kinetics. Although the reactivity at mid-temperature can be improved by the addition of noble metals the high cost of these noble metal containing materials significantly hindered their scalable application. In the current work we propose to incorporate earth-abundant metals into the iron-based spinel for hydrogen production in a chemical looping scheme at mid-temperatures. Mn0.2Co0.4Fe2.4O4 shows a high hydrogen production rate at the average rate of ∼0.62 mmol.g-1.min-1 and a hydrogen yield of ∼9.29 mmol.g-1 with satisfactory stability over 20 cycles at 550 oC. The mechanism studies manifest that the enhanced hydrogen production performance is a result of the improved oxygen-ion conductivity to enhance reduction reaction and high reactivity of reduced samples with steam. The performance of the oxygen carriers in this work is comparable to those noble-metal containing materials enabling their potential for industrial applications.
Quantification of Temperature Dependence of Hydrogen Embrittlement in Pipeline Steel
Feb 2019
Publication
The effects of temperature on bulk hydrogen concentration and diffusion have been tested with the Devanathan–-Stachurski method. Thus a model based on hydrogen potential diffusivity loading frequency and hydrostatic stress distribution around crack tips was applied in order to quantify the temperature’s effect. The theoretical model was verified experimentally and confirmed a temperature threshold of 320 K to maximize the crack growth. The model suggests a nanoscale embrittlement mechanism which is generated by hydrogen atom delivery to the crack tip under fatigue loading and rationalized the ΔK dependence of traditional models. Hence this work could be applied to optimize operations that will prolong the life of the pipeline.
Review of Renewable Energy-based Hydrogen Production Processes for Sustainable Energy Innovation
Dec 2019
Publication
In this review we primarily analyze the hydrogen production technologies based on water and biomass including the economic technological and environmental impacts of different types of hydrogen production technologies based on these materials and comprehensively compare them. Our analyses indicate that all renewable energy-based approaches for hydrogen production are more environmentally friendly than fossil-based hydrogen generation approaches. However the technical ease and economic efficiency of hydrogen production from renewable sources of energy needs to be further improved in order to be applied on a large scale. Compared with other renewable energy-based methods hydrogen production via biomass electrolysis has several advantages including the ease of directly using raw biomass. Furthermore its environmental impact is smaller than other approaches. Moreover using a noble metal catalyst-free anode for this approach can ensure a considerably low power consumption which makes it a promising candidate for clean and efficient hydrogen production in the future.
Decarbonization Roadmaps for ASEAN and their Implications
Apr 2022
Publication
The objective of this paper is to derive for the first time decarbonization roadmaps for the ten nations of ASEAN. This study first presents a regional view of ASEAN’s fossil and renewable energy usage and energy-related CO2 emission. Results show that renewable energies have been losing ground to fossil energies in the last two decades and fossil fuels will likely continue to be an important part of ASEAN’s energy mix for the next few decades. Therefore decarbonizing efforts should focus not only on increasing the share of renewable energies in electricity generation but also on technologies to reduce CO2 emission from fossil power and industrial plants. This study next performs a technology mapping exercise for all ten ASEAN countries to determine decarbonization technologies that have high impact and high readiness for individual countries. Besides installing more sustainable renewable energies common themes coming from these roadmaps include switching from coal to gas for power generation using carbon capture and storage (CCS) technologies to decarbonize fossil and industrial plants replacing internal combustion vehicles by electric vehicles and for countries that have coal and natural gas resources upgrading them to blue hydrogen by chemical processes and using CCS to mitigate the emitted CO2. Blue hydrogen can be used to decarbonize hard-to-decarbonize industries. Policy implications of these roadmaps include imposing a credible carbon tax establishing a national hydrogen strategy intergovernmental coordination to establish regional CCS corridors funding research and development to improve carbon capture efficiency on a plant level and resolving sustainability issues of hydropower and bioenergy in ASEAN.
Absence of Spillover of Hydrogen Adsorbed on Small Palladium Clusters Anchored to Graphene Vacancies
May 2021
Publication
Experimental evidence exists for the enhancement of the hydrogen storage capacity of porous carbons when these materials are doped with metal nanoparticles. One of the most studied dopants is palladium. Dissociation of the hydrogen molecules and spillover of the H atoms towards the carbon substrate has been advocated as the reason for the enhancement of the storage capacity. We have investigated this mechanism by performing ab initio density functional molecular dynamics (AIMD) simulations of the deposition of molecular hydrogen on Pd6 clusters anchored on graphene vacancies. The clusters are initially near-saturated with atomic and molecular hydrogen. This condition would facilitate the occurrence of spillover since our energy calculations based on density functional theory indicate that migration of preadsorbed H atoms towards the graphene substrate becomes exothermic on Pd clusters with high hydrogen coverages. However AIMD simulations show that the H atoms prefer to intercalate and absorb within the Pd cluster rather than migrate to the carbon substrate. These results reveal that high activation barriers exist preventing the spillover of hydrogen from the anchored Pd clusters to the carbon substrate.
Mobile Phone Infrastructure Development: Lessons for the Development of a Hydrogen Infrastructure
Apr 2014
Publication
The development of new infrastructure is often a consideration in the introduction of new innovations. Currently there is some confusion around how to develop a hydrogen infrastructure to support the introduction of FCVs. Lessons can be learned from similar technology introduction in the past and therefore this paper investigates how mobile phone infrastructure was developed allowing the mass-market penetration of mobile phones. Based on this successful infrastructural development suggestions can be made on the development of a hydrogen infrastructure. It is suggested that a hydrogen infrastructure needs to be pre-developed 3–5 years before the market introduction of FCVs can successfully occur. A lack of infrastructural pre-development will cause to the market introduction of FCVs to fail.
Design and Dynamics Simulations of Small Scale Solid Oxide Fuel Cell Trigeneration System
Dec 2018
Publication
This paper presents the design of a solid oxide fuel cell (SOFC) tri-generation system that consists of an SOFC-combined heat and power subsystem an adsorption refrigeration subsystem and coupling devices between the two subsystems. Whereas typical extant designs use absorption techniques the proposed design employs adsorption refrigeration. In this paper the dynamics of adsorption refrigeration are reported in detail to evaluate the feasibility of the tri-generation system design. The design of the coupling devices and instrumentation strategies of the overall system are discussed in detail. Simulation results indicate that the proposed SOFC trigeneration system can output 4.35 kW of electrical power 2.448 kW of exhaust heat power and 1.348 kW of cooling power. The energy efficiency is 64.9% and the coefficient of performance of the refrigeration is 0.32. Varying the electrical output power results in the variation of exhaust heat power but not the cooling power; varying the cooling power affects the exhaust heat power but not the electrical power. These favorable features can be attributed to the proposed heat exchange sequence and active temperature controls of the system.
H21- Phase 1 Technical Summary Report
May 2021
Publication
The UK Government signed legislation on 27th June 2019 committing the UK to a legally binding target of Net Zero emissions by 2050. Climate change is one of the most significant technical economic social and business challenges facing the world today.
The H21 NIC Phase 1 project delivered an optimally designed experimentation and testing programme supported by the HSE Science Division and DNV GL with the aim to collect quantifiable evidence to support that the UK distribution network of 2032 will be comparably as safe operating on 100% hydrogen as it currently is on
natural gas. This innovative project begins to fill critical safety evidence gaps surrounding the conversion of the UK gas network to 100% hydrogen. This will facilitate progression towards H21 Phase 2 Operational Safety Demonstrations and the H21 Phase 3 Live Trials to promote customer acceptability and ultimately aid progress towards a government policy decision on heat.
DNV GL and HSE Science Division were engaged to undertake the experimentation testing and QRA update programme of work. DNV GL and HSE Science Division also peer reviewed each other’s programme of work at various stages throughout the project undertaking a challenge and review of the experimental data and results to provide confidence in the conclusions.
A strategic set of tests was designed to cover the range of assets represented across the Great Britain gas distribution networks. The assets used in the testing were mostly recovered from the distribution network as part of the ongoing Iron Mains Risk Reduction Replacement Programme. Controlled testing against a well-defined master testing plan with both natural gas and 100% hydrogen was then undertaken to provide the quantitative evidence to forecast any change to background leakage levels in a 100% hydrogen network.
Key Findings from Phase 1a:
The H21 NIC Phase 1 project delivered an optimally designed experimentation and testing programme supported by the HSE Science Division and DNV GL with the aim to collect quantifiable evidence to support that the UK distribution network of 2032 will be comparably as safe operating on 100% hydrogen as it currently is on
natural gas. This innovative project begins to fill critical safety evidence gaps surrounding the conversion of the UK gas network to 100% hydrogen. This will facilitate progression towards H21 Phase 2 Operational Safety Demonstrations and the H21 Phase 3 Live Trials to promote customer acceptability and ultimately aid progress towards a government policy decision on heat.
DNV GL and HSE Science Division were engaged to undertake the experimentation testing and QRA update programme of work. DNV GL and HSE Science Division also peer reviewed each other’s programme of work at various stages throughout the project undertaking a challenge and review of the experimental data and results to provide confidence in the conclusions.
A strategic set of tests was designed to cover the range of assets represented across the Great Britain gas distribution networks. The assets used in the testing were mostly recovered from the distribution network as part of the ongoing Iron Mains Risk Reduction Replacement Programme. Controlled testing against a well-defined master testing plan with both natural gas and 100% hydrogen was then undertaken to provide the quantitative evidence to forecast any change to background leakage levels in a 100% hydrogen network.
Key Findings from Phase 1a:
- Of the 215 assets tested 41 of them were found to leak 19 of them provided sufficient data to be able to compare hydrogen and methane leak rates.
- The tests showed that assets that were gas tight on methane were also gas tight on hydrogen. Assets that leaked on hydrogen also leaked
- on methane including repaired assets.
- The ratio of the hydrogen to methane volumetric leak rates varied between 1.1 and 2.2 which is largely consistent with the bounding values expected for laminar and turbulent (or inertial) flow which gave ratios of 1.2 and 2.8 respectively.
- None of the PE assets leaked; cast ductile and spun iron leaked to a similar degree (around 26-29% of all iron assets leaked) and the proportion of leaking steel assets was slightly less (14%).
- Four types of joint were responsible for most of the leaks on joints: screwed lead yarn bolted gland and hook bolts.
- All of the repairs that sealed methane leaks also were effective when tested with hydrogen.
Towards an Understanding of Hydrogen Supply Chains: A Structured Literature Review Regarding Sustainability Evaluation
Oct 2021
Publication
Hydrogen technologies have received increased attention in research and development to foster the shift towards carbon-neutral energy systems. Depending on the specific production techniques transportation concepts and application areas hydrogen supply chains (HSCs) can be anything from part of the energy transition problem to part of the solution: Even more than battery-driven electric mobility hydrogen is a polyvalent technology and can be used in very different contexts with specific positive or negative sustainability impacts. Thus a detailed sustainability evaluation is crucial for decision making in the context of hydrogen technology and its diverse application fields. This article provides a comprehensive structured literature review in the context of HSCs along the triple bottom line dimensions of environmental economic and social sustainability analyzing a total of 288 research papers. As a result we identify research gaps mostly regarding social sustainability and the supply chain stages of hydrogen distribution and usage. We suggest further research to concentrate on these gaps thus strengthening our understanding of comprehensive sustainability evaluations for HSCs especially in social sustainability evaluation. In addition we provide an additional approach for discussion by adding literature review results from neighboring fields highlighting the joint challenges and insights regarding sustainability evaluation.
Modelling Decentralized Hydrogen Systems: Lessons Learned and Challenges from German Regions
Feb 2022
Publication
Green hydrogen produced by power‐to‐gas will play a major role in the defossilization of the energy system as it offers both carbon‐neutral chemical energy and the chance to provide flexibility. This paper provides an extensive analysis of hydrogen production in decentralized energy systems as well as possible operation modes (H2 generation or system flexibility). Modelling was realized for municipalities—the lowest administrative unit in Germany thus providing high spatial resolution—in the linear optimization framework OEMOF. The results allowed for a detailed regional analysis of the specific operating modes and were analyzed using full‐load hours share of used negative residual load installed capacity and levelized cost of hydrogen to derive the operation mode of power‐to‐gas to produce hydrogen. The results show that power‐to‐gas is mainly characterized by constant hydrogen production and rarely provides flexibility to the system. Main drivers of this dominant operation mode include future demand for hydrogen and the fact that high full‐load hours reduce hydrogen‐production costs. However changes in the regulatory market and technical framework could promote more flexibility and support possible use cases for the central technology to succeed in the energy transition.
Perspectives on Cathodes for Protonic Ceramic Fuel Cells
Jun 2021
Publication
Protonic ceramic fuel cells (PCFCs) are promising electrochemical devices for the efficient and clean conversion of hydrogen and low hydrocarbons into electrical energy. Their intermediate operation temperature (500–800 °C) proffers advantages in terms of greater component compatibility unnecessity of expensive noble metals for the electrocatalyst and no dilution of the fuel electrode due to water formation. Nevertheless the lower operating temperature in comparison to classic solid oxide fuel cells places significant demands on the cathode as the reaction kinetics are slower than those related to fuel oxidation in the anode or ion migration in the electrolyte. Cathode design and composition are therefore of crucial importance for the cell performance at low temperature. The different approaches that have been adopted for cathode materials research can be broadly classified into the categories of protonic–electronic conductors oxide-ionic–electronic conductors triple-conducting oxides and composite electrodes composed of oxides from two of the other categories. Here we review the relatively short history of PCFC cathode research discussing trends highlights and recent progress. Current understanding of reaction mechanisms is also discussed.
The Future Potential Hydrogen Demand in Energy-intensive Industries - A Site-specific Approach Applied to Germany
Dec 2021
Publication
Hydrogen when based on renewable electricity can play a key role in the transition towards CO2-neutral industrial production since its use as an energy carrier as well as a feedstock in various industrial process routes is promising. At the same time a large-scale roll-out of hydrogen for industrial use would entail substantial impacts on the energy system which can only be assessed if the regional distribution of future hydrogen demand is considered. Here we assess the technical potential of hydrogen-based technologies for energy-intensive industries in Germany. The site-specific and process-specific bottom-up calculation considers 615 individual plants at 367 sites and results in a total potential hydrogen demand of 326 TWh/a. The results are available as an open dataset. Using hydrogen for non-energy-intensive sectors as well increases the potential hydrogen demand to between 482 and 534 TWh/a for Germany - based on today’s industrial structure and production output. This assumes that fossil fuels are almost completely replaced by hydrogen for process heating and feedstocks. The resulting hydrogen demand is very unevenly distributed: a few sites account for the majority of the overall potential and similarly the bulk of demand is concentrated in a few regions with steel and chemical clusters.
Thoughts on the Prospects of Renewable Hydrogen
Oct 2020
Publication
In the last two years or so there has been increasing interest in hydrogen as an energy source in Australia and around the world. Notably this is not the first time that hydrogen has caught our collective interest. Most recently the 2000s saw a substantial investment in hydrogen research development and demonstration around the world. Prior to that the oil crises of the 1970s also stimulated significant investment in hydrogen and earlier still the literature on hydrogen was not lacking. And yet the hydrogen economy is still an idea only.<br/>So what if anything might be different this time?<br/>This is an important question that we all need to ask and for which the author can only give two potential answers. First our need to make dramatic reductions in greenhouse gas (GHG) emissions has become more pressing since these previous waves of interest. Second renewable energy is considerably more affordable now than it was before and it has consistently outperformed expectations in terms of cost reductions by even its strongest supporters.<br/>While this dramatic and ongoing reduction in the cost of renewables is very promising our need to achieve substantial GHG emission reductions is the crucial challenge. Moreover meeting this challenge needs to be achieved with as little adverse social and economic impact as possible.<br/>When considering what role hydrogen might play we should first think carefully about the massive scale and complexity of our global energy system and the typical prices of the major energy commodities. This provides insights into what opportunities hydrogen may have. Considering a temperate country with a small population like Australia we see that domestic natural gas and transport fuel markets are comparable to and even larger than the electricity market on an energy basis.
A Comparative Review of Alternative Fuels for the Maritime Sector: Economic, Technology, and Policy Challenges for Clean Energy Implementation
Oct 2021
Publication
Global maritime transportation is responsible for around 3% of total anthropogenic green‐ house gas emissions and significant proportions of SOx NOx and PM emissions. Considering the predicted growth in shipping volumes to 2050 greenhouse gas emissions from ships must be cut by 75–85% per ton‐mile to meet Paris Agreement goals. This study reviews the potential of a range of alternative fuels for decarbonisation in maritime. A systematic literature review and information synthesis method was applied to evaluate fuel characteristics production pathways utilization technologies energy efficiency lifecycle environmental performance economic viability and cur‐ rent applicable policies. Alternative fuels are essential to decarbonisation in international shipping. However findings suggest there is no single route to deliver the required greenhouse gas emissions reductions. Emissions reductions vary widely depending on the production pathways of the fuel. Alternative fuels utilising a carbon‐intensive production pathway will not provide decarbonisation instead shifting emissions elsewhere in the supply chain. Ultimately a system‐wide perspective to creating an effective policy framework is required in order to promote the adoption of alternative propulsion technologies.
Investigation of Turbulent Premixed Methane/Air and Hydrogen-enriched Methane/Air Flames in a Laboratory-scale Gas Turbine Model Combustor
Feb 2021
Publication
Methane and hydrogen-enriched (25 vol% and 50 vol% H2 -enriched CH4) methane/air premixed flames were investigated in a gas turbine model combustor under atmospheric conditions. The flame operability ranges were mapped at different Reynold numbers (Re) showing the dependence on Re and H2 concentrations. The effects of equivalence ratio (Φ) Re and H2 enrichment on flame structure were examined employing OH-PLIF measurement. For CH4/air cases the flame was stabilized with an M shape; while for H2 -enriched cases the flame transitions to a П shape above a specific Φ. This transition was observed to influence significantly the flashback limits. The flame shape transition is most likely a result of H2 enrichment occurring due to the increase in flame speed higher resistance of the flame to the strain rate and change in the inner recirculation zone. Flow fields of CH4/air flames were compared between low and high Re cases employing high-speed PIV. The flashback events led by two mechanisms (combustion-induced vortex breakdown CIVB and boundary-layer flashback BLF) were observed and recorded using high-speed OH chemiluminescence imaging. It was found that the CIVB flashback occurred only for CH4 flames with M shape whereas the BLF occurs for all H2 -enriched flames with П shape.
Dislocation and Twinning Behaviors in High Manganese Steels in Respect to Hydrogen and Aluminum Alloying
Dec 2018
Publication
The dislocation and twinning evolution behaviors in high manganese steels Fe-22Mn-0.6C and Fe-17Mn-1.5Al-0.6C have been investigated under tensile deformation with and without diffusive hydrogen. The notched tensile tests were interrupted once primary cracks were detected using the applied direct current potential drop measurement. In parallel the strain distribution in the vicinity of the crack was characterized by digital image correlation using GOM optical system. The microstructure surrounding the crack was investigated by electron backscatter diffraction. Electron channeling contrast imaging was applied to reveal the evolution of dislocations stacking faults and deformation twins with respect to the developed strain gradient and amount of hydrogen. The results show that the diffusive hydrogen at the level of 26 ppm has a conspicuous effect on initiating stacking faults twin bundles and activating multiple deformation twinning systems in Fe-22Mn-0.6C. Eventually the interactions between deformation twins and grain boundaries lead to grain boundary decohesion in this material. In comparison hydrogen does not obviously affect the microstructure evolution namely the twinning thickness and the amount of activated twinning systems in Fe-17Mn-1.5Al-0.6C. The Al-alloyed grade reveals a postponed nucleation of deformation twins delayed onset of the secondary twinning system and develops finer twinning lamellae in comparison to the Al-free material. These observations explain the improved resistance to hydrogen-induced cracking in Al-alloyed TWIP steels.
Technology Assessment of Hydrogen Firing of Process Heaters
Apr 2011
Publication
In conjunction with John Zink Co. LLC the Chevron Energy Technology Company conducted a three part study evaluating potential issues with switching refinery process heaters from fuel gas to hydrogen fuel for the purpose of greenhouse gas emissions reduction via CO2 capture and storage.
The focus was on the following areas:
The focus was on the following areas:
- Heater performance
- Burner performance and robustness
- Fuel gas system retrofit requirements
Comparative Technical and Economic Analyses of Hydrogen-Based Steel and Power Sectors
Mar 2024
Publication
Decarbonizing the current steel and power sectors through the development of the hydrogen direct-reduction iron ore–electric arc furnace route and the 100% hydrogen-fired gas turbine cycle is crucial. The current study focuses on three clusters of research works. The first cluster covers the investigation of the mass and energy balance of the route and the subsequent application of these values in experiments to optimize the reduction yield of iron ore. In the second cluster the existing gas turbine unit was selected for the complete replacement of natural gas with hydrogen and for finding the most optimal mass and energy balance in the cycle through an Aspen HYSYS model. In addition the chemical kinetics in the hydrogen combustion process were simulated using Ansys Chemkin Pro to research the emissions. In the last cluster a comparative economic analysis was conducted to identify the levelized cost of production of the route and the levelized cost of electricity of the cycle. The findings in the economic analysis provided good insight into the details of the capital and operational expenditures of each industrial sector in understanding the impact of each kg of hydrogen consumed in the plants. These findings provide a good basis for future research on reducing the cost of hydrogen-based steel and power sectors. Moreover the outcomes of this study can also assist ongoing large-scale hydrogen and ammonia projects in Uzbekistan in terms of designing novel hydrogen-based industries with cost-effective solutions.
Fuel Cells and Hydrogen for Green Energy in European Cities and Regions
Sep 2018
Publication
Fuel cells and hydrogen are a viable solution for European regions and cities to reduce their emissions and realise their green energy transition says new FCH JU study.
In 2017 the FCH JU launched an initiative to support regions and cities in this regard. Today 89 regions and cities participate representing about one quarter of Europe's population surface area and GDP. These regions are pursuing ambitious plans to deploy FCH technology in the coming years. FCH investments totalling about EUR 1.8 billion are planned for these regions in the next 5 years. These planned investments can contribute significantly to further developing the FCH market in Europe and driving the sector towards commercialisation.
The new study provides a detailed insight into the FCH investment plans of the participating regions and cities and points out next steps to be taken for realising a European FCH roadmap with a view to commercialising the technology. In particular the study shows that:
In 2017 the FCH JU launched an initiative to support regions and cities in this regard. Today 89 regions and cities participate representing about one quarter of Europe's population surface area and GDP. These regions are pursuing ambitious plans to deploy FCH technology in the coming years. FCH investments totalling about EUR 1.8 billion are planned for these regions in the next 5 years. These planned investments can contribute significantly to further developing the FCH market in Europe and driving the sector towards commercialisation.
The new study provides a detailed insight into the FCH investment plans of the participating regions and cities and points out next steps to be taken for realising a European FCH roadmap with a view to commercialising the technology. In particular the study shows that:
- European regions and cities need to take action now to realise their ambitious emission reduction targets and improve local air quality.
- Investing in fuel cell and hydrogen technology pays off for cities and regions as it provides a mature safe and competitive zero-emission solution for all their energy needs.
- Regions and cities can benefit from investing in hydrogen and fuel cells not only in environmental terms but also by stimulating local economic growth and creating attractive places to live work and visit.
- The Regions and Cities Initiative provides a unique opportunity to benefit from existing knowledge draw on project development support and financing assistance to realise own FCH deployment projects.
- To enable the realisation of the envisaged FCH deployment plans of the regions and cities continued support will be required for individual projects as well as the coalition at large.
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