Argus Clean Ammonia Europe Conference

Boudewijn Siemons

CEO, Port of Rotterdam

Boudewijn became CEO in February 2024, less than a year after being named Interim CEO at the port, which he first joined as Chief Operating Officer in 2020. Before that he worked at Royal Vopak as President of the North and Latin America Division. He was previously a member of Vopak’s management and worked in that capacity in Europe, the Middle East and the US. Before that, Boudewijn held various management positions at Royal VolkerWessels. He began his career in 1987 in the Netherlands Royal Navy, where he served until 1998. He studied at the Netherlands Royal Naval Institute and the Technical University Delft.

Gautam Kumbam

CEO, AM Green Ammonia

Gautam Reddy is the CEO of AM Green Ammonia, a subsidiary of India's leading renewable energy platform, Greenko. AM Green aims to be a global leader in the green molecules business, using Greenko’s expertise in renewable generation and storage. Gautam is leading the group's expansion into the green molecule business, including green hydrogen and green ammonia. The platform's investors include firms such as Petronas, GIC and ADIA. The Indian government has also selected AM Green as a top green hydrogen manufacturer in India under the SIGHT scheme, administered by the Ministry of Renewable Energy. Before his current role, Gautam was the Managing Director for Schlumberger-South Asia. He spent over 20yr with Schlumberger in the upstream oil and gas sector, holding various roles around the world. These roles included positions in technology centres in the UK, sales and marketing in India, line management in the UAE and Oman, strategy execution for West Africa and head of global service delivery for the drilling product line in Houston. His leadership and management experience spans different regions and cultures. Gautam studied civil engineering at IIT Bombay in India and has an MSc in oil and gas management from Heriot-Watt University in Edinburgh, Scotland. His passions outside work are reading, fitness and travel.

Jaime Beltran

Chief of Business Development and Commercial Officer, Port of Huelva

Dr. Jaime Beltrán holds a Ph.D. in Industrial Engineering, an Executive MBA, a Master's Degree in Port Management, and an Executive Program in Digital Transformation. He is also a certified Project Management Professional (PMP). He has 27yr of experience in logistics, industrial operations and port environments, and has contributed to developing the maritime and logistics sectors by participating in national and international initiatives. He is the Business Development and Commercial Director at the Port Authority of Huelva in Spain and leads business development, commercial strategy, market intelligence and European affairs. His work focuses on accelerating the energy transition by developing hydrogen-based fuel value chains and promoting Green Shipping Corridors. He works to position the Port of Huelva as a strategic platform to organise the industrial and logistics ecosystem needed for the production, storage, distribution and use of sustainable maritime fuels.

Kristof Coppé

Director Fleet Operations & Technical Business Development , Exmar

Kristof has been Director Fleet Operations and Technical Business Development at Exmar since 2025. He started his career in the dredging industry as technical superintendent before joining Exmar, first as technical superintendent and later as project manager and head of technical shipping. He was responsible for several innovative building projects in gas shipping including eight midsize gas carriers built in the Philippines and the world’s first order of LPG fuelled very large gas carriers. Kristof leads the development of Exmar’s first ammonia fuelled 46,000m³ gas carriers. He holds a master’s degree in electromechanical engineering-maritime technology from the University of Ghent.

Klaus Hofstadler

Energy & Operations Optimization Manager, LAT Nitrogen

Duna Uribe

New Energies Manager, Port of Rotterdam

Duna Uribe manages the new energies portfolio at the Port of Rotterdam, enabling hydrogen and its derivatives to be handled at the port. Duna leads the developments of import storage, hydrogen conversion, pipelines, bunkering and distribution. Previously Duna had a leading role in creating the partnership with Pecém Port Complex, a Joint Venture from the Port of Rotterdam situated in Brazil where she led the launch of Pecém’s green hydrogen hub. Duna is passionate about creating a prosperous path to net zero as well as gender equity.

Alexander Fokker

General Manager, LBC Tank Terminals

Alexander Fokker is an executive with over 17 years of experience in the liquid bulk storage and energy transition sectors. He is the general manager of LBC Tank Terminals' recently acquired terminal in Vlissingen, where he is developing the facility to become a leading hub for green energy solutions in the region. He previously held senior leadership roles in large-scale terminals, where he oversaw P&L management, multi-disciplinary teams and strategic growth initiatives. He managed capital projects for sustainable feedstocks, helped develop and execute sustainability strategies, and led efforts to increase operational efficiency and customer satisfaction across multiple regions. His expertise includes terminal management, M&A, commercial development and sustainability, and he focuses on innovation, energy transition projects and team development.

Benedikt Messner

Senior Vice President, Uniper Global Commodities

In this role, Benedikt primarily focuses on building a portfolio of renewable power purchase agreements, global green hydrogen-related projects and offtake agreements. His interests extend into clean technology and energy transition ventures. Benedikt was General Manager at Enerjisa in Turkey until July 2016, which is a joint venture between Germany utility Eon and Turkish conglomerate Sabanci. Before joining Enerjisa in 2013, Benedikt was Origination Director at Eon Global Commodities in Düsseldorf. Before that, he held various managerial roles, including leading the power trading desks at Eon, Acton Energy and Enron Europe. Benedikt has a master’s degree from Vienna University of Economics and Business Administration.

Thomas De Graef

Technical Manager, Alternative-Fuelled Newbuilds, CMB.Tech

Thomas De Graef leads the development of ammonia-fuelled vessels at CMB.Tech and has over 18yr of maritime expertise in alternative fuel innovation. He has successfully brought multiple NH₃-fuelled projects from concept to delivery, working with leading Asian shipyards, naval designers and equipment manufacturers to pioneer ammonia combustion technology at scale. His deep partnerships with top-tier yards across Asia have helped translate ammonia propulsion from theory into commercial marine operations.

Thomas has extensive experience connecting shipowners, naval architects, technology providers and regulatory bodies, and combines technical depth with industry knowledge. His expertise includes fuel system innovation and the mechanical and engineering developments driving the ammonia transition, such as engine architecture, fuel storage systems, combustion optimisation and safety protocols. He follows emerging technologies and industry developments to ensure CMB.Tech's ammonia fleet uses the latest mechanical and propulsion advancements. His problem-solving approach tackles complex regulatory and technical challenges for fuels not yet fully covered by existing maritime standards.

Thomas holds a Master's degree in Mechanical Engineering and has successfully delivered dozens of vessels at leading Asian shipyards for major cargo and offshore operators. He joined CMB.Tech in April 2021 and has helped make ammonia propulsion a commercial reality, working hands-on with the industry to develop and deploy practical solutions for vessel performance, safety and regulatory compliance.

Stephen Jackson

CEO, Ammonia Europe

Ammonia Europe is a newly established business association representing the interests of the European ammonia value chain. Stephen was previously Deputy CEO at Hydrogen Europe, as well as a Vice President and Senior Director in renowned global consultancies. The focus throughout his career has been on climate, energy, transport and trade policies, but he also has expertise in research and development, as well as industrial scale-up.

Eric Hungerbühler

Head of Low Carbon Commodities, , EnBW Energy

Daniel Elias

Director, Green H2 Atlantic

Andrea Guati Rojo

Policy and Advocacy Manager, Ammonia Europe

Andrea Guati Rojo is the Policy and Advocacy Manager at Ammonia Europe, an industry association representing the ammonia industry in Europe. Based in Brussels, Andrea leads the organisation’s EU policy strategy, positioning low-carbon ammonia as a strategic enabler of industrial decarbonisation, maritime transition, and energy security. With a background spanning engineering, policy, and communications, Andrea brings over ten years of experience in the ammonia sector across Europe and Latin America. She holds a Ph.D. from Cardiff University (UK), where her research examined public acceptance of ammonia, alongside an MSc in Sustainable Energy and Environment and a BA in Communication and Government Affairs.

Lisa Maria Assmann

Senior Shipbroker, Steem1960 Shipbrokers

Lisa Assmann is Senior Shipbroker at the projects department at Steem1960, where her focus is on long term ammonia projects in addition to other specialised shipping (liquid gases, chemicals and clean petroleum products). Prior to that Lisa has been heading the gas analytics team at Steem1960 for 6 years as a leading expert in LPG, Ammonia and Petrochemical shipping, working closely together with the market’s forefront ammonia shipbroking desk. As part of her previous career Lisa worked in consulting and banking in addition to being a researcher at Norwegian School of Economics in Bergen and the Energy Institute at UCL in London investigating aspects of green shipping and prediction methodology for freight. Lisa holds a Ph.D. in Business Economics and a Master of Science in Energy Economics from Norwegian School of Economics, as well as a B.A. in from Zeppelin university, Friedrichshafen, Germany.

Fulvio Astengo

Head of Commercial, Business Development, LD Armateurs

Fulvio Astengo is the Head of Business Development, Commercial and Contract at LD Armateurs, within the Transport and Logistics division. An accomplished senior executive with over 20 years of experience in the maritime and logistics sectors, he has led commercial development and operations across Europe, Southeast Asia, and the Middle East for several international companies. Currently based in Dubai, Fulvio focuses on driving the commercial growth of LD Armateurs innovative and sustainable logistics solutions, working closely with key stakeholders across the maritime, commodities, energy, and mining industries.

Alex Green

Head of New Fuels, Mitsui O.S.K Lines

Kieran Walsh

Commodity Broker, FIS

Johannes Eng

Head of New Energies, Port of Duisburg

Johannes is currently head of new energies at the Port of Duisburg (duisport), the world's largest inland port. The port is located in the centre of Europe's industrial heartland of North Rhine-Westphalia and its Rhine-Ruhr region. His work focuses on the port's energy transition, including new energies, hydrogen and its derivatives, port transformation and the supply chain. He previously worked as a senior manager of business solutions and supply chain analyst for duisport industrial solutions (dis), where he oversaw global supply chain logistics and contract management. He also worked as operations manager for EMEA at solar module manufacturer Canadian Solar and as head of logistics for Norwegian renewable energy developer Scatec Solar. Johannes has a degree from EUFH European University of Applied Sciences Brühl, Germany and Saint Mary’s University, Halifax, Canada.

Bernd Haveresch

Director of Business Development, Ammobia

Bernd Haveresch is the director of business development at Ammobia, a US-based deep-tech company developing low-cost, low-carbon ammonia production technology. He leads international market entry, focusing on European partnership development and early commercial project opportunities for Ammobia’s modular, energy-agnostic ammonia synthesis technology.

Bernd has more than 29yr of experience in engineering, project management, strategy, business and project development, and process technology licensing with global tier 1 companies including Siemens, MAN Energy Solutions, KBR, Topsoe and Nippon Sanso. Bernd brings a grounded, demand-side perspective to Ammobia on moving low-carbon ammonia from promise to project, from his experience working with industrial operators, project developers and technology providers on the constraints of cost, scale and the supply chain. He has deep expertise in rotating equipment, technical gases, clean hydrogen and ammonia, and energy transition industries, gained both as a line manager and as a self-employed adviser.

He holds a degree in mechanical engineering from Dortmund University of Applied Sciences and Arts [Dipl.-Ing. (FH)] and is a certified Senior Project Manager and Six Sigma Green Belt. He has served as a board member of the Ammonia Energy Association since June 2024 and is based in Germany.

Mike Rendall

Chair, UK Ammonia Alliance

Dr Mike Rendall is chair of the UK Ammonia Alliance (UKAA), an industry group of pioneering businesses that seeks to maximise the strategic role of ammonia for a more secure and sustainable future. The UKAA focuses on creating a supportive environment in the UK for a range of industries to adopt low-carbon ammonia at scale. Mike has over 25yr of experience as a leader in ammonia and hydrogen conversion, fuel cells and energy storage technologies. In addition to chairing the UKAA, Mike is the chief technology officer of H-Power, where he leads product development, technology strategy and the commercial rollout of the company's ammonia cracker and fuel cell systems. Mike previously held key strategic technical roles at Dyson, Diverse Energy and multiple leading battery and fuel cell firms. He is recognised for driving product innovation and commercialisation across clean energy technologies.

Ruth Sharpe

Editor - Ammonia, Argus

Ruth has been editor of the Argus Ammonia report since 2017, most recently overseeing the report’s expansion into the clean ammonia space. She joined Argus in 2009 and covered the coal, biomass and freight markets in the UK and US, before moving into fertilizers in 2016. She has a master’s degree in journalism from Brunel University London.

Tim Cheyne

SVP - Global Head of Agriculture, Fertilizers, Ammonia, DEF, Argus

Tim is Senior Vice President for the fertilizer sector at Argus. Tim worked a process manager at an ammonia/urea plant in South Africa before moving to the UK to join KBR (then M.W. Kellogg) as a process engineer in the ammonia technology team. More recently Tim has covered fertilizer and industrial nitrogen as a market analyst.

Oliver Hatfield

VP Fertilizers, Argus

Oliver Hatfield is the VP of Fertilizers for Argus Media in London. Oliver joined Argus in October 2018 following its acquisition of Integer Research, where he was head of the fertilizer market research team and one of the company’s founders. He has more than 20 years of experience in business analysis and consulting.

Oliver is currently leading business development across Argus’ global nitrogen, phosphates and potash businesses, and driving the development of the company’s business in clean ammonia and specialty fertilizers. He is a regular speaker at industry events and is a graduate of economics and development economics from the University of Manchester in the UK.

Dan Hayes

VP Business Development, Argus

Joyce Aviso

Hydrogen Principle, Consulting, Argus

Joyce is a Principal in the Consulting practice at the London office of Argus Media, covering hydrogen. She has over 15 years of experience across the natural resources sectors, including hydrogen, power & renewables, petrochemicals, plastics, refining, gas and shipping. Prior to her role at Argus Media, she worked for a number of research and consulting firms, where she has led the development of new business units in hydrogen and chemicals, as well as managed bespoke consulting projects. Joyce holds an MBA (Hons) from Imperial College London.

Lizzy Lancaster

Deputy Editor - Ammonia, Argus

Lizzy is Deputy Editor at Argus Media specialising in traditional ammonia and emerging clean ammonia markets. After joining Argus in 2021, she covered ferrous metal markets with a focus on green steel, before moving into fertilizers in 2023 where she has expanded the breadth of Argus coverage and analysis of clean ammonia. She holds a masters degree in politics from King’s College London.

Timo Bollerhey

Chief Executive Officer & Lead Strategist, Hintco & H2Global

Claudia Wlk

Editor, Fertilizers, Argus

Malte Melfjord-Piontek

Head of Regulatory Affairs, Höegh Autoliners

Malte Melfjord-Piontek is Head of Regulatory Affairs at Höegh Autoliners and leads the company’s governmental engagement in maritime transport. He has more than a decade of experience in policy, sustainability and corporate advocacy. He was previously Deputy Head of Office for the Schwarz Group’s Brussels office (Lidl, Kaufland, PreZero) and helped shape the company’s strategy on EU legislation and corporate due diligence.

He spent nearly five years in the European Parliament as Head of Office and Policy Advisor to a German Member of the European Parliament. He holds a Master’s degree in Political Science from Ludwig-Maximilians-Universität Munich and the University of Copenhagen. He is a German national and is based in Oslo.

Fanny Lossy

Senior Director for Climate, ECSA (European Community Shipowner's Association)

Jack Merriott

Senior Manager - Consulting , Argus

Jack Merriott leads Argus Media’s bespoke consulting projects practice in low-carbon fuels in Europe. He has delivered lender due diligence for some of the largest and most advanced green and blue ammonia projects in the world, as well as green fertilizer projects. He also leads the consulting practice in alternative marine fuels, advising shipowners, storage companies, prospective fuel producers and financial institutions.

Joyce Aviso

Hydrogen Principle, Consulting, Argus

Joyce is a Principal in the Consulting practice at the London office of Argus Media, covering hydrogen. She has over 15 years of experience across the natural resources sectors, including hydrogen, power & renewables, petrochemicals, plastics, refining, gas and shipping. Prior to her role at Argus Media, she worked for a number of research and consulting firms, where she has led the development of new business units in hydrogen and chemicals, as well as managed bespoke consulting projects. Joyce holds an MBA (Hons) from Imperial College London.

MeiKei Lai

Manager - Consulting, Argus

Ruth Sharpe

Editor - Ammonia, Argus

Ruth has been editor of the Argus Ammonia report since 2017, most recently overseeing the report’s expansion into the clean ammonia space. She joined Argus in 2009 and covered the coal, biomass and freight markets in the UK and US, before moving into fertilizers in 2016. She has a master’s degree in journalism from Brunel University London.

Stefan Kruempelmann

Hydrogen and Future Fuels Editor, Argus

Stefan leads Argus‘ Hydrogen and Future Fuels service which provides news, analysis, production cost indicators and datasets on hydrogen, e-methanol and ammonia. He has been with Argus for more than six years and covered European natural gas markets before shifting his focus to hydrogen and its derivatives. Prior to this, he worked for an investment research company in London and studied in Maastricht, Leeds and London.