plan A Networks Düsseldorf

LEOPOLD SPENNER is the CEO and co-founder of alcemy, a Berlin-based start-up that reduces CO2 emissions in the production of concrete. His family is already in its fourth generation of operating several cement and concrete plants. Spenner studied industrial engineering at Karlsruhe Institute of Technology, conducted research at the Association of German Cement Works, and got to know the industry even better through the Boston Consulting Group before joining forces with Dr. Robert Meyer to launch the contech (construction tech) start-up, alcemy. Using AI-supported software, they can reduce the clinker content of concrete to reduce its carbon footprint. The software is used both at the cement plant and inside the mixer truck, collecting real-time data 24/7, making forecasts, and intervening in production when possible. Currently, alcemy employs over 20 female employees. Customers such as Märker Zement and Rohrdorfer Zement rely on alcemy’s expertise.

An evening about one of the world’s most important building materials, the spirit of research, and green entrepreneurship. Moderator of the evening: Nadin Heinich, plan A





plan A Networks is a Germany-wide networking initiative for architects and the real estate industry. We invite you to an exclusive evening of discussion and dialogue – with top-class guests, inspiring insights, culinary extravaganzas, and stimulating conversations.

Made possible by Gira, dormakaba and TECE.


plan A Networks 2021 in Düsseldorf:

Paradise Now
Hammer Str. 27
40219 Düsseldorf

Tuesday, 20.9.2022, 6:30 pm
r.s.v.p. 9.9.2022

For questions about the event please contact:

Alexandra Forciniti
T +49 89 461 331 635