Physicist Dr. Harry Lehmann becomes a new member of the international organization.

What an honour! Dr. Harry Lehmann, co-founder and chairman of Omas for Future, is now a new member of the Club of Rome. As a physicist and systems analyst, he joins this prestigious international consortium of experts from various disciplines spanning over 30 countries, all dedicated to advancing a sustainable future.


“In the current situation, the comprehensive and cross-system search for solutions is urgent. I see this membership as a commitment and will continue to contribute to ‘saving the world,'” says Dr. Harry Lehmann. With over four decades of experience in applied environmental research, his work has consistently revolved around finding solutions to sustainability challenges, particularly the integration of resource and energy transition themes. As far back as the 1990s, Lehmann developed scenarios for achieving one hundred percent renewable energy supply. “We, Omas for Future, congratulate Dr. Harry Lehmann on this outstanding recognition of his long-standing work. We are proud to now have our climate movement represented in the Club of Rome through him. Therefore, it inspires us to continue contributing, alongside Dr. Harry Lehmann, to a greener, healthier, and more liveable future for our children and grandchildren,” summarizes Omas for Future founder Cordula Weimann.

About us

Dr. Harry Lehmann has been working in various institutions in the fields of energy, resources, and the environment on national and international levels for over 40 years. He co-founded or participated in various companies such as Naturstrom, atmosfair, and organizations like EUROSOLAR and the World Resources Forum. Currently, Lehmann is the founding director of the “PtX Lab Lausitz.” This “think-and-do-tank” for fuels and raw materials from green hydrogen aims to establish a technical and regulatory basis for environmentally friendly production and use of PtX products, such as green hydrogen. He is also the editor and co-author of numerous publications and has been teaching at various universities since 1985, including Leuphana University in Lüneburg. The Omas for Future movement is partner of the European Grandparents for Climate. See our Partners page or visit