Applications & Pathways
Sector Coupling Potential of Wind-based Hydrogen Production and Fuel Cell Train Operation in Regional Rail Transport in Berlin and Brandenburg
Jan 2021
Publication
As the transport sector is ought to be decarbonized fuel-cell-powered trains are a viable zero-tailpipe technology alternative to the widely employed diesel multiple units in regional railway service on non-electrified tracks. Carbon-free hydrogen can be provided by water-electrolysis from renewable energies. In this study we introduce an approach to assess the potential of wind-based hydrogen for use in adjacent regional rail transport by applying a GIS approach in conjunction with a site-level cost model. In Brandenburg about 10.1 million train-km annually could be switched to fuel cell electric train operation. This relates to a diesel consumption of appr. 9.5 million liters today. If fuel cell trains would be employed that translated to 2198 annual tons hydrogen annually. At favorable sites hydrogen costs of approx. 6.40 €/kg - including costs of hydrogen refueling stations - could be achieved. Making excess hydrogen available for other consumers would further decrease hydrogen production costs.
FCH JU – Key to Sustainable Energy and Transport
Jan 2019
Publication
This brochure offers an overview of the main applications of fuel cell and hydrogen technologies and how they work and provides insights into our programme and our accomplishments.
Well-to-wheel Greenhouse Gas Emissions of Heavy-duty Transports: Influence of Electricity Carbon Intensity
Feb 2021
Publication
There are several alternatives for how to phase out diesel in heavy-duty transports thereby reducing the sector’s climate change impact. This paper assesses the well-to-wheel (WTW) greenhouse gas (GHG) emissions of energy carriers for heavy-duty vehicles analyzing the effect of the carbon intensity of the electricity used in production. The results show that energy carriers with high electricity dependence are not necessarily better than diesel from a WTW perspective. In particular fuels produced through electrolysis are not well suited in carbon-intense electricity systems. Conversely waste-based biofuels have low GHG emissions regardless of the electricity system. Battery-electric buses show a large reduction of GHG emissions compared to diesel buses and many other alternatives while battery-electric trucks have higher GHG emissions than diesel in carbon intense electricity systems. Thus electrifying transports or switching to renewable fuels will not suffice if the electricity system is not made renewable first.
Fuel Cell Electric Buses: Potential for Sustainable Public Transport in Europe
Oct 2015
Publication
This report provides an outlook for jointly achieving a commercialisation pathway.<br/>Building on the findings of the 2012 FCH JU technology study on alternative powertrains for urban buses this report provides an assessment of the commercialisation pathway from an operational perspective. It reflects the actual situation in which operators deploy large scale demonstration projects in the next years from a rather conservative angle and argues why it makes sense to deploy FC buses now. The insights are based on first-hand data and assessments of the coalition members from the hydrogen and fuel cell industry as well as local governments and public transport operators in Europe.
Are We Building Back Better? Evidence from 2020 and Pathways for Inclusive Green Recovery Spending
Mar 2021
Publication
COVID-19 has led to a global crisis threatening the lives and livelihoods of the most vulnerable by increasing poverty exacerbating inequalities and damaging long-term economic growth prospects. The report Are We Building Back Better? Evidence from 2020 and Pathways for Inclusive Green Recovery Spending provides an analysis of over 3500 fiscal policies announced by leading economies in 2020 and calls for governments to invest more sustainably and tackle inequalities as they stimulate growth in the wake of the devastation wrought by the pandemic.
UKERC Research Atlas Landscape – Fuel Cells
Dec 2013
Publication
This UKERC Research Atlas Landscape provides an overview of the competencies and publicly funded activities in fuel cell research development and demonstration (RD&D) in the UK. It covers the main funding streams research providers infrastructure networks and UK participation in international activities.
Leakage-type-based Analysis of Accidents Involving Hydrogen Fueling Stations in Japan and USA
Aug 2016
Publication
To identify the safety issues associated with hydrogen fuelling stations incidents at such stations in Japan and the USA were analyzed considering the regulations in these countries. Leakage due to the damage and fracture of main bodies of apparatuses and pipes in Japan and the USA is mainly caused by design error that is poorly planned fatigue. Considering the present incidents in these countries adequate consideration of the usage environment in the design is very important. Leakage from flanges valves and seals in Japan is mainly caused by screw joints. If welded joints are to be used in hydrogen fuelling stations in Japan strength data for welded parts should be obtained and pipe thicknesses should be reduced. Leakage due to other factors e.g. external impact in Japan and the USA is mainly caused by human error. To realize self-serviced hydrogen fuelling stations safety measures should be developed to prevent human error by fuel cell vehicle users.
Toward a Fossil Free Future with HYBRIT: Development of Iron and Steelmaking Technology in Sweden and Finland
Jul 2020
Publication
The Swedish and Finnish steel industry has a world-leading position in terms of efficient blast furnace operations with low CO2 emissions. This is a result of a successful development work carried out in the 1980s at LKAB (Luossavaara-Kiirunavaara Aktiebolag mining company) and SSAB (steel company) followed by the closing of sinter plants and transition to 100% pellet operation at all of SSAB’s five blast furnaces. However to further reduce CO2 emission in iron production a new breakthrough technology is necessary. In 2016 SSAB teamed up with LKAB and Vattenfall AB (energy company) and launched a project aimed at investigating the feasibility of a hydrogen-based sponge iron production process with fossil-free electricity as the primary energy source: HYBRIT (Hydrogen Breakthrough Ironmaking Technology). A prefeasibility study was carried out in 2017 which concluded that the proposed process route is technically feasible and economically attractive for conditions in northern Sweden/Finland. A decision was made in February 2018 to build a pilot plant and construction started in June 2018 with completion of the plant planned in summer 2020 followed by experimental campaigns the following years. Parallel with the pilot plant activities a four-year research program was launched from the autumn of 2016 involving several research institutes and universities in Sweden to build knowledge and competence in several subject areas.
Implementing Maritime Battery-electric and Hydrogen Solutions: A Technological Innovation Systems Analysis
Sep 2020
Publication
Maritime transport faces increasing pressure to reduce its greenhouse gas emissions to be in accordance with the Paris Agreement. For this to happen low- and zero-carbon energy solutions need to be developed. In this paper we draw on sustainability transition literature and introduce the technological innovation system (TIS) framework to the field of maritime transportation research. The TIS approach analytically distinguishes between different innovation system functions that are important for new technologies to develop and diffuse beyond an early phase of experimentation. This provides a basis for technology-specific policy recommendations. We apply the TIS framework to the case of battery-electric and hydrogen energy solutions for coastal maritime transport in Norway. Whereas both battery-electric and hydrogen solutions have developed rapidly the former is more mature and has a strong momentum. Public procurement and other policy instruments have been crucial for developments to date and will be important for these technologies to become viable options for shipping more generally.
The Influence of Degradation Effects in Proton Exchange Membrane Fuel Cells on Life Cycle Assessment Modelling and Environmental Impact Indicators
Apr 2022
Publication
Although proton exchange membrane fuel cell (PEMFC) systems are expected to have lower environmental impacts in the operational phase compared to conventional energy conversion systems there are still certain economic operational and environmental setbacks. Durability under a wide range of operating conditions presents a challenge because degradation processes affect the PEMFC efficiency. Typically life cycle assessment (LCA) of PEMFC systems do not include performance degradation. Thus a novel semi-empirical PEMFC model is developed which includes degradation effects caused by different operational regimes (dynamic and steady-state). The model is integrated into LCA through life cycle inventory (LCI) to achieve a more realistic and accurate evaluation of environmental impacts. Verification of the model clearly showed that the use of existing LCI models underestimates the environmental impacts. This is especially evident when green hydrogen is used in PEMFC operational phase where manufacturing phase and maintenance (stack replacements) become more influential. Input parameters of the model can be modified to reflect technological improvements (e.g. platinum loading or durability) and evaluate the effects of future scenarios.
The Impact of Disruptive Powertrain Technologies on Energy Consumption and Carbon Dioxide Emissions from Heavy-duty Vehicles
Jan 2020
Publication
Minimising tailpipe emissions and the decarbonisation of transport in a cost effective way remains a major objective for policymakers and vehicle manufacturers. Current trends are rapidly evolving but appear to be moving towards solutions in which vehicles which are increasingly electrified. As a result we will see a greater linkage between the wider energy system and the transportation sector resulting in a more complex and mutual dependency. At the same time major investments into technological innovation across both sectors are yielding rapid advancements into on-board energy storage and more compact/lightweight on-board electricity generators. In the absence of sufficient technical data on such technology holistic evaluations of the future transportation sector and its energy sources have not considered the impact of a new generation of innovation in propulsion technologies. In this paper the potential impact of a number of novel powertrain technologies are evaluated and presented. The analysis considers heavy duty vehicles with conventional reciprocating engines powered by diesel and hydrogen hybrid and battery electric vehicles and vehicles powered by hydrogen fuel cells and freepiston engine generators (FPEGs). The benefits are compared for each technology to meet the expectations of representative medium and heavy-duty vehicle drivers. Analysis is presented in terms of vehicle type vehicle duty cycle fuel economy greenhouse gas (GHG) emissions impact on the vehicle etc.. The work shows that the underpinning energy vector and its primary energy source are the most significant factor for reducing primary energy consumption and net CO2 emissions. Indeed while an HGV with a BEV powertrain offers no direct tailpipe emissions it produces significantly worse lifecycle CO2 emissions than a conventional diesel powertrain. Even with a de-carbonised electricity system (100 g CO2/kWh) CO2 emissions are similar to a conventional Diesel fuelled HGV. For the HGV sector range is key to operator acceptability of new powertrain technologies. This analysis has shown that cumulative benefits of improved electrical powertrains on-board storage efficiency improvements and vehicle design in 2025 and 2035 mean that hydrogen and electric fuelled vehicles can be competitive on gravimetric and volumetric density. Overall the work demonstrates that presently there is no common powertrain solution appropriate for all vehicle types but how subtle improvements at a vehicle component level can have significant impact on the design choices for the wider energy system.
Scottish Offshore Wind to Green Hydrogen Opportunity Assessment
Dec 2020
Publication
Initial assessment of Scotland’s opportunity to produce green hydrogen from offshore wind
Summary of Key Findings
Summary of Key Findings
- Scotland has an abundant offshore wind resource that has the potential to be a vital component in our net zero transition. If used to produce green hydrogen offshore wind can help abate the emissions of historically challenging sectors such as heating transport and industry.
- The production of green hydrogen from offshore wind can help overcome Scotland’s grid constraints and unlock a massive clean power generation resource creating a clean fuel for Scottish industry and households and a highly valuable commodity to supply rapidly growing UK and European markets.
- The primary export markets for Scottish green hydrogen are expected to be in Northern Europe (Germany Netherlands & Belgium). Strong competition to supply these markets is expected to come from green hydrogen produced from solar energy in Southern Europe and North Africa.
- Falling wind and electrolyser costs will enable green hydrogen production to be cost-competitive in the key transport and heat sectors by 2032. Strategic investment in hydrogen transportation and storage is essential to unlocking the economic opportunity for Scotland.
- Xodus’ analysis supports a long-term outlook of LCoH falling towards £2/kg with an estimated reference cost of £2.3 /kg in 2032 for hydrogen delivered to shore.
- Scotland has extensive port and pipeline infrastructure that can be repurposed for hydrogen export to the rest of UK and to Europe. Pipelines from the ‘90s are optimal for this purpose as they are likely to retain acceptable mechanical integrity and have a metallurgy better suited to hydrogen service. A more detailed assessment of export options should be performed to provide a firm foundation for early commercial green hydrogen projects.
- There is considerable hydrogen supply chain overlap with elements of parallel sectors most notably the oil and gas offshore wind and subsea engineering sectors. Scotland already has a mature hydrocarbon supply chain which is engaged in supporting green hydrogen. However a steady pipeline of early projects supported by a clear financeable route to market will be needed to secure this supply chain capability through to widescale commercial deployment.
- There are gaps in the Scottish supply chain in the areas of design manufacture and maintenance of hydrogen production storage and transportation systems. Support including apprenticeships will be needed to develop indigenous skills and capabilities in these areas.
- The development of green hydrogen from offshore wind has the potential to create high value jobs a significant proportion which are likely to be in remote rural/coastal communities located close to offshore wind resources. These can serve as an avenue for workers to redeploy and develop skills learned from oil and gas in line with Just Transition principles.
Urban Buses: Alternative Powertrains for Europe: A Fact-based Analysis of the Role of Diesel Hybrid, Hydrogen Fuel Cell, Trolley and Battery Electric Powertrains
Dec 2012
Publication
A coalition of 40 industrial companies and government organizations financially supported by the FCH JU elaborated a technology neutral and fact-based comparative study on eight different powertrain technologies for urban buses in Europe from 2012 to 2030.<br/>According to the results of the study only fully electric powertrain buses (based on hydrogen batteries or trolley system) have the potential to achieve zero local emissions by drastically reducing well-to-wheel emissions.<br/>Following the positive comparative result for fuel cell hydrogen urban buses the FCH JU will launch a follow-up study that more specifically defines real uptake scenarios for market entry scheduled to starting before summer 2013.
Measuring Accuracy and Computational Capacity Trade-offs in an Hourly Integrated Energy System Model
Feb 2021
Publication
Improving energy system modelling capabilities can directly affect the quality of applied studies. However some modelling trade-offs are necessary as the computational capacity and data availability are constrained. In this paper we demonstrate modelling trade-offs resulting from the modification in the resolution of four modelling capabilities namely transitional scope European electricity interconnection hourly demand-side flexibility description and infrastructure representation. We measure the cost of increasing resolution in each capability in terms of computational time and several energy system modelling indicators notably system costs emission prices and electricity import and export levels. The analyses are performed in a national-level integrated energy system model with a linear programming approach that includes the hourly electricity dispatch with European nodes. We determined that reducing the transitional scope from seven to two periods can reduce the computational time by 75% while underestimating the objective function by only 4.6%. Modelers can assume a single European Union node that dispatches electricity at an aggregated level which underestimates the objective function by 1% while halving the computational time. Furthermore the absence of shedding and storage flexibility options can increase the curtailed electricity by 25% and 8% respectively. Although neglecting flexibility options can drastically decrease the computational time it can increase the sub-optimality by 31%. We conclude that an increased resolution in modelling flexibility options can significantly improve the results. While reducing the computational time by half the lack of electricity and gas infrastructure representation can underestimate the objective function by 4% and 6% respectively.
Combustion and Exhaust Emission Characteristics, and In-cylinder Gas Composition, of Hydrogen Enriched Biogas Mixtures in a Diesel Engine
Feb 2017
Publication
This paper presents a study undertaken on a naturally aspirated direct injection diesel engine investigating the combustion and emission characteristics of CH4-CO2 and CH4-CO2 -H2 mixtures. These aspirated gas mixtures were pilot-ignited by diesel fuel while the engine load was varied between 0 and 7 bar IMEP by only adjusting the flow rate of the aspirated mixtures. The in-cylinder gas composition was also investigated when combusting CH4-CO2 and CH4-CO2-H2 mixtures at different engine loads with in cylinder samples collected using two different sampling arrangements. The results showed a longer ignition delay period and lower peak heat release rates when the proportion of CO2 was increased in the aspirated mixture. Exhaust CO2 emissions were observed to be higher for 60 CH4:40CO2 mixture but lower for the 80CH4:20CO2 mixture as compared to diesel fuel only combustion at all engine loads. Both exhaust and in-cylinder NOx levels were observed to decrease when the proportion of CO2 was increased; NOx levels increased when the proportion of H2 was increased in the aspirated mixture. In-cylinder NOx levels were observed to be higher in the region between the sprays as compared to within the spray core attributable to higher gas temperatures reached post ignition in that region.
Fuel Cells and Hydrogen Technologies in Europe: Financial and Technology Outlook on the European Sector Ambition 2014-2020
Nov 2011
Publication
Sustainable secure and competitive energy supply and transport services are at the heart of the EU2020 strategy towards a low carbon and inclusive economy geared towards a reduction of 80% of CO2 emissions by 2050. This objective has been endorsed by the European Institutions and Member States. It is widely recognised that a technological shift and the deployment of new clean technologies are critical for a successful transition to such a new sustainable economy. Furthermore in addition to bringing a healthier environment and securing energy supply innovation will provide huge opportunities for the European economy. However this paradigm shift will not be purely driven by the market. A strong and determined commitment of public institutions and the private sector together are necessary to support the European political ambition. The period 2014-2020 will be critical to ensure that the necessary investments are realized to support the EU2020 vision. In terms of hydrogen and fuel cell technologies significant investments are required for (a) transportation for scaling up the car fleet and building up of refuelling infrastructure needs (b) hydrogen production technologies to integrate renewable intermittent power sources to the electrical grid (wind and solar) (c) stationary fuel cell applications with large demonstration projects in several European cities and (d) identified early markets (material handling vehicles back-up power systems) to allow for volume developments and decrease of system-costs.<br/>This Report summarizes the sector’s financial ambition to reach Europe’s objectives in 2020.
A Personal Retrospect on Three Decades of High Temperature Fuel Cell Research; Ideas and Lessons Learned
Feb 2021
Publication
In 1986 the Dutch national fuel cell program started. Fuel cells were developed under the paradigm of replacing conventional technology. Coal-fired power plants were to be replaced by large-scale MCFC power plants fuelled by hydrogen in a full-scale future hydrogen economy. With today's knowledge we will reflect on these and other ideas with respect to high temperature fuel cell development including the choice for the type of high temperature fuel cell. It is explained that based on thermodynamics proton conducting fuel cells would have been a better choice and the direct carbon fuel cell even more so with electrochemical gasification of carbon as the ultimate step. The specific characteristics of fuel cells and multisource multiproduct systems were not considered whereas we understand now that these can provide huge driving forces for the implementation of fuel cells compared to just replacing conventional combined heat and power production technology.
The Role of Initial Tank Temperature on Refuelling of On-board Hydrogen Tanks
Jun 2016
Publication
The influence of the initial tank temperature on the evolution of the internal gas temperature during the refuelling of on-board hydrogen tanks is investigated in this paper. Two different types of tanks four different fuel delivery temperatures (from ambient temperature refuelling to a pre-cooled hydrogen at −40 °C) several filling rates and initial pressures are considered. It has been found that the final gas temperature increases linearly with the increase of the initial tank temperature while the temperature increase (ΔT) and the final state of charge (SOC) decrease linearly with increasing the initial temperature. This dependency has been found to be larger on type III than on type IV tank and larger the larger the initial pressure. Additionally CFD simulations are performed to better understand the role of the relevant phenomena on the gas temperature histories e.g. gas compression gas mixing and heat transfer. By comparing the results of calculations with adiabatic and diathermal tank walls the effect of the initial gas temperature has been separated from the effect of the initial wall temperature on the process.
The Curious Case of the Conflicting Roles of Hydrogen in Global Energy Scenarios
Oct 2019
Publication
As energy systems transition from fossil-based to low-carbon they face many challenges particularly concerning energy security and flexibility. Hydrogen may help to overcome these challenges with potential as a transport fuel for heating energy storage conversion to electricity and in industry. Despite these opportunities hydrogen has historically had a limited role in influential global energy scenarios. Whilst more recent studies are beginning to include hydrogen the role it plays in different scenarios is extremely inconsistent. In this perspective paper reasons for this inconsistency are explored considering the modelling approach behind the scenario scenario design and data assumptions. We argue that energy systems are becoming increasingly complex and it is within these complexities that new technologies such as hydrogen emerge. Developing a global energy scenario that represents these complexities is challenging and in this paper we provide recommendations to help ensure that emerging technologies such as hydrogen are appropriately represented. These recommendations include: using the right modelling tools whilst knowing the limits of the model; including the right sectors and technologies; having an appropriate level of ambition; and making realistic data assumptions. Above all transparency is essential and global scenarios must do more to make available the modelling methods and data assumptions used.
The Battle between Battery and Fuel Cell Powered Electric Vehicles: A BWM Approach
Oct 2017
Publication
The transition to a more sustainable personal transportation sector requires the widespread adoption of electric vehicles. However a dominant design has not yet emerged and a standards battle is being fought between battery and hydrogen fuel cell powered electric vehicles. The aim of this paper is to analyze which factors are most likely to influence the outcome of this battle thereby reducing the uncertainty in the industry regarding investment decisions in either of these technologies. We examine the relevant factors for standard dominance and apply a multi-criteria decision-making method best worst method to determine the relative importance of these factors. The results indicate that the key factors include technological superiority compatibility and brand reputation and credibility. Our findings show that battery powered electric vehicles have a greater chance of winning the standards battle. This study contributes to theory by providing further empirical evidence that the outcome of standards battles can be explained and predicted by applying factors for standard success. We conclude that technology dominance in the automotive industry is mostly driven by technological characteristics and characteristics of the format supporter.
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