GREENTECH FESTIVAL SPEAKERS

Konrad Schlösser holds a diploma in industrial engineer and started his career with various international supply chain projects, both in consulting and industry. At Mubea, he has been working in the corporate development department, before switching to the business unit “Micromobility” three years ago. Since 2025 he is heading the unit as Managing Director, being responsible for the e-cargo bike and e-scooter business of Mubea.

Kai works as Director Global Marketing at „myclimate“, a Swiss-based NGO focusing on climate and sustainability measures. He is also as Co-Executive Director a member of myclimate’s collaborative leadership group. Before tapping into sustainability, Kai worked in communications and brand management for „Nike“. Born and raised in Germany, he holds a « Master of Arts » degree in Ancient History. Kai is a football aficionado, a passionate gravelbiker and a snowboarder with “great style and attitude, but very limited skills”.

Tim Bruns has been the Head of OGE’s Berlin office for five years. In this role, he is responsible for the company’s political outreach and advocacy at the federal and state levels. Previously, he was active in the Offshore Wind Industry.

Dr. Ralf Belusa is a visionary international executive, board member, and advisor with deep expertise across various highly complex Industries. With a remarkable career spanning over nearly three decades, Dr. Belusa (49) has consistently delivered exceptional results, building global businesses with revenues exceeding multiple billion euros. He is known for seamlessly integrating cutting-edge technologies, sustainable strategies, and agile methodologies into large-scale, high-performance sales, marketing and IT organizations, achieving operational excellence across 144 countries.

Andreas Krönke is a communications expert for sustainable technology companies and leads the Greentech & Sustainability unit at PIABO Communications. Since several years, he has been responsible for clients in Greentech, Cleantech, Climatetech, Sustainability, and ESG. He oversees the company’s sustainability strategy and advises clients like Stripe, Kyon Energy, Patagonia and AXA Climate. Additionally, he mentors at RESPOND Accelerator, Greentech Alliance, and SpinLab. He has spoken at the Sustainability Summit, Greentech Festival, and numerous other conferences.

Lucas Zaehringer is Co-Founder and CEO at Planet2050. He spent the past 3 years developing digital MRV software solutions for supply chain traceability applied in the fields of Regenerative Agriculture and Sustainable fuels or chemicals, under his role as Head Climate at the German blockchain company Blocksize. At Planet2050, Lucas is developing innovative technology and climate finance solutions for high-quality projects reducing and removing greenhouse gas emissions.

Hannah Boomgaarden is an expert in open innovation and collaboration, renowned for her expertise in building and boosting corporate innovation capabilities and executing innovation activities. Her track record includes providing support to partners across the EMEA region, supporting Fortune 500 companies, and spearheading the development of platforms for open innovation execution. She has established on of the most active innovation platforms in EMEA so called STARTUP AUTOBAHN, launched four more offices for Plug and Play, and overseen the implementation of over 400 pilot projects. Her comprehensive understanding of the innovation landscape, coupled with her ability to connect people and ideas, makes her an practical asset to the organizations and individuals she collaborates with.

Prof. Dr. Johan Rockström is the Director of the Potsdam Institute for Climate Impact Research and Professor at the Institute of Earth and Environmental Science at Potsdam University. Rockström is an internationally recognized scientist on global sustainability issues, who led the development of the new Planetary Boundaries framework for human development in the current era of rapid global change at the Stockholm Resilience Centre. He is a leading scientist on global water resources, with about 25 years of experience from applied water research in tropical regions, and more than 150 research publications in fields ranging from applied land and water management to global sustainability. Rockström provides strategic scientific guidance as a member of the European Commission’s Expert Group ‘Mission Board for Adaptation to Climate Change, including Societal Transformation’ and the ‘Royal Swedish Academy of Sciences’ and consults several governments and business networks.

Tilmann leads Quantis Germany’s work on Chemicals. Previously he directed Systemiq’s program on sustainable automotive and batteries, where he created and led The Battery Pass Consortium. He holds degrees with distinction from Maastricht and Lund University.

Cristian Citu is the CEO & Co-Founder of Qurator.com – a B2B sustainability tech scouting platform. Previously he worked for World Economic Forum, focusing on the impact of digital technologies on business and wider society, while managing dedicated deep-dives on new business models or exploring the implications of exponential technologies. Cristian is immersed in Scandinavia’s impact innovation ecosystem, looking for opportunities to accelerate the world’s shift to desirable futures.

Elissa Brunato is the CEO of Radiant Matter. Previously, she worked in the design and production of textiles and garments. While overseeing international production sites, she noticed significant amounts of unnecessary waste at multiple stages of manufacture, harming the environment and exposing workers to hazardous materials. Realizing that the industry lacked sustainable options for embellishment components and surface finishes, Elissa founded Radiant Matter, a material technology start-up that develops sustainable, brilliantly colored, bio-inspired material solutions from cellulose.

Since joining Ragn-Sells Pär has been instrumental in transitioning the company from a traditional linear actor to circular leader. Before Ragn-Sells he began his journey in the food industry, where he championed both ethical and climate initiatives., for that his efforts have earned him international recognition. Beyond his role at Ragn-Sells he serves as co-chair at the International Chamber of Commerce’s working group on circular economy as well as in the steering committee for UNEP Global Partnership on Nutrient Management.

Apsara Mitra, 23, is a Bengali-American, engineer, scientist, climate and civic justice mobilizer with expertise in conservation, housing justice, and technology development previously working in commercial aviation and now as a researcher/aerospace engineer at NASA. Among her engagements, she has also served as a Climate Fellow at the Philadelphia Regional Center for Children’s Environmental Health at the University of Pennsylvania, advocates for appropriations for conservation with WWF, and currently serves as the Deputy Technical Director at Re-earth Initiative.

Showcasing the results of a Swedish study funded by Climate-Leading-Process Industry. The project utilizes BASF’s “Chain Extender” technology to enhance the quality and viscosity of degraded landfill plastics and OceanWaste, upgrading them into spinnable yarn for textiles.Key highlights:*The successful conversion of waste into yarn, *Reparells plans for industrial scalability*Collaboration opportunities to drive systemic change. * World premiere of first product created using this technique, demonstrating a scalable and sustainable solution to landfill and marine litter.

Adina Deacu is a social entrepreneur, systems thinker, and Klaus Töpfer Sustainability Fellow at the Research Institute for Sustainability (RIFS) in Potsdam. She explores how business can drive systemic change by aligning profitability with social and ecological value. As founder of Tianmei’s World Academy, a decentralized “network of classrooms” cross-cultural platform, she creates cross-cultural learning experiences that empower individuals to co-create sustainable futures. Adina brings a unique perspective rooted in environmental psychology, regenerative thinking, and inclusive innovation.

Benjamin Cassou is a Franco-American entrepreneur and innovator dedicated to redefining materials through circular economy solutions. As the co-founder of ReStalk, he transforms agricultural co-products into high-value, sustainable materials, replacing fossil-fuel-based and tree-based packaging and goods. With a background in film, storytelling, and business, Benjamin brings a creative and strategic approach to sustainability, bridging industries to build scalable, regenerative solutions. He is currently leading global initiatives to develop Agri-Hubs, fostering collaboration between agriculture, technology, and manufacturing. Passionate about systemic change, he champions innovation that harmonizes economic growth with environmental responsibility.

Montgomery Wagner is the Co-Founder and COO of revoltech, pioneering circular material solutions like LOVR™ & MATTR™. He studied Politics, Administration, and International Relations at Zeppelin University before earning a degree in European and International Public Policy from LSE. His global academic journey included time in France and Colombia. Before revoltech, Montgomery gained experience across industries, from the hotel sector to government, consulting, and environmental policy. His expertise spans entrepreneurship, product innovation, strategic thinking, and leadership.