Our confirmed 2025 Speakers

Ari Suomilammi has been working in Gasum for over three decades in several positions, in gas transmission related tasks and now in biomethane business. Currently Ari is in Head of Renewable Gases position in Gasum. Task covers mainly European-wide biogas sourcing, portfolio management and development of utilization other renewable gases like e-methane, carbon dioxide and hydrogen. Ari has also wide experience in biogas production. Ari is also board member of Finnish Biocycle and Biogas Association and Finnish Environmental Industries organization. He has a leading role in national emergency supply organization’s energy and gas sector. Ari holds a BSc in Mechanical Engineering, MBA and MSc in Economics.

Mr. Khash Mohajerani is the Co-Founder and serves as Managing Partner at OrbeNovo Capital. OrbeNovo Capital is a specialist private equity investor in the Energy & Industrial sectors. OrbeNovo is an active investor in the UK and Irish biogas sector through its portfolio company, EAG Bioenergy Ltd. Prior to starting OrbeNovo Capital, he was a senior investment team member of Bluewater Private Equity. He previously worked in private equity and investment banking with Warburg Pincus and Merrill Lynch. He was previously a Non-Executive Director of Siccar Point Energy, Mime Petroleum, Wellesley Petroleum, Apex International Energy and TRG Energy AS. He currently serves as a Non-Executive Director of EAG Bioenergy Limited and is a Member of the Development Board of St John’s College, Cambridge.

Philip has 10 years’ experience in the Irish energy industry, working in large utility companies and with the Department of Environment, Climate and Communications mainly on renewable heat technologies such as biomethane.

Master of Business Administration, University of Tampere Leading the Renewable Energy business unit in St1, including the management of St1 Biogas operations, while also responsible for the St1 business strategy. Board member in several St1 subsidiaries and joint venture companies in the renewable fuel sector.

Tim Hamers is the Secretary General of ERGaR, the European Renewable Gas Registry. ERGaR facilitates the cross-border trade of renewable gas certificates such as GOs and CoOs between national biomethane certificate registries. It does so, by providing the rules and IT solutions for these transfers. Moreover, it provides a network for all stakeholders in the renewable gas certification supply chain with working groups, newsletters and webinars on the specific topic of renewable gas certification trading. Before starting at ERGaR, Tim worked for several other European industry associations representing sectors such as the weighing industry and agricultural machinery industry.

I am responsible for the GO services for gas and hydrogen in Finland, as well as the development of the gas market for clean gases. My role involves ensuring the traceability and certification of clean gases, which is crucial for promoting sustainable energy solutions. Additionally, I work on strategies to enhance the integration of renewable gases into the existing energy infrastructure. I hold a Master's degree in Engineering. My educational background, combined with my professional experience, enables me to contribute effectively to the advancement of clean energy market development.

Johanna Diederichs is a Biomethane & Decarbonization Strategist at Green Steps, with a Master in Environment and Resource Management and a background in renewable energy. Johanna works closely with clients across the biomethane value chain, maintaining constant exchange with both biomethane producers and buyers. She helps corporate clients navigate complex regulations and achieve their net-zero climate targets through expertise in trading biomethane Guarantees of Origin (RGGOs), Renewable Energy Guarantees of Origin (REGOs), and carbon credits. Her work focuses on delivering tailored strategies for decarbonization while supporting compliance and sustainability goals

Peter brings decades of expertise across the entire energy value chain, having started at Shell, and through his time as McKinsey & Company and Power2X serving a broad set of multinational industrials across O&G, Power generation and other heavy industry (chemicals, glass, steel, cement). His project development experience covers a diverse geography from Chemicals Catalyst investments in the Netherlands, North Sea offshore decarbonization, Upstream drilling in China up to Midstream gas-gathering in Iraq. This is complemented by the global client base he has served as an advisor out of Dubai, covering the Americas, Middle East and Europe.Throughout his career Peter has built a skillset in Capital Excellence and Delivery, in complex brownfield operations, and in deal-making and execution. Today based out of Amsterdam, Peter focuses on building Power2X’s advisory practise in Project Delivery as a Service across Europe and directs and oversees a bio- and e-methanol investment in the Baltic states. Notable efforts on biomass-based energy, bio-based chemistry and blue as well as green hydrogen underline his dedication to Energy and Material Transition strategies that are practical, goal oriented and feasible in the complex regulatory and political landscape of the EU. Peter is dedicated to driving the Energy and Materials transition forward through both driving client transformations, as well as through direct investments and management of project developments in energy-intensive value chains across Europe. ✨ Together, we can drive progress and innovation in clean energy, building a robust hydrogen value chain, and contribute to a brighter and more sustainable future! ✨

Knut has more than 25 years’ experience in energy research, analysis, policy making and investment. As a trained economist and having both analysed and acted in energy markets throughout his career, he has developed a profound understanding of energy market dynamics. The energy transition, including the links between energy markets – market coupling – and the impact of carbon markets, has been in focus for both his analytical, strategic and operational work. As the Head of Renewable Energy Analysis, Knut is responsible for Veyt’s Renewable Fuels team, which focusses on Biomethane, Maritime Fuels and Green Hydrogen & Derivatives

Dr. Philipp Mair-Zelenka holds a degree in Chemical and Process Engineering with a specialization in Plant Engineering, and a Ph.D. in Technical Sciences. He spent five years as a university assistant focusing on plant and process simulation, followed by three years as a process engineer for olefin plants. He then held roles as Senior Process Engineer and Sales & Business Development Manager, gaining extensive experience in both engineering and commercial functions. Later, he worked as a Project Manager and Technologist in the pulp and paper industry. Since 2022, Dr. Philipp Mair-Zelenka has been serving as Sales Manager at GIG Karasek, focusing on conventional evaporation technologies as well as CO2 valorization and industrial waste heat utilization.

Ewa Abramiuk-Lété is the General Manager of Liquid Gas Europe, the European association representing the liquid gas sector. With over 20 years of experience in EU energy and climate policy, she leads the industry’s advocacy for the role of renewable liquid gases—such as bioLPG and renewable DME—in achieving the EU’s decarbonisation goals. Ewa is a strong voice for technology neutrality and energy diversity, particularly in rural and off-grid areas.

Frédéric Dykmans is the Secretary General of GD4S, leveraging extensive experience in gas distribution and energy management. With a career spanning over two decades, Frédéric has held senior positions at GRDF, where he managed large-scale investments, industrial safety projects, biomethane injection and the modernization of gas networks. His expertise includes financial management, HR transformation, and business development, gained from various leadership roles across Europe. He holds a Master’s in Applied Economics from the Catholic University of Louvain and speaks multiple languages. Frédéric is deeply committed to sustainability and community involvement.

Emile Baier, VP Corporate Strategy & Public Affairs at PRODEVAL is an actor of sustainable agricultural and energy models, committed to decarbonization, energy sovereignty, and reindustrialization in the service of a sustainable future.