ABACON CAPITAL GMBH is a family-owned investment firm based in Hamburg, Germany, officially established in 2021 as an extension of the Büll Family Office. The firm invests across public and private markets, drawing on a multi-decade platform and a belief that addressing global challenges can create lasting value. Its founders emphasize long-term partnerships, viewing each investment as the start of collaborative work rather than a final transaction.
Focusing on energy transition, deep technology and sustainable real estate, ABACON CAPITAL targets sectors that support environmental improvement and technical progress. The firm allocates capital across stages—from seed rounds in private startups to equity positions in public companies—and uses both equity and credit instruments to meet diverse financing needs. Its portfolio features clean energy production, electric mobility services, smart city infrastructure and eco-friendly property developments. By combining financial discipline with strategic support, the team seeks market returns and measurable reductions in carbon emissions and resource waste.
The firm’s commitment to clean technology and battery systems is visible in several key investments. In December 2022, ABACON CAPITAL joined a $63 million Series A round for CustomCells, a German developer of tailored lithium-ion cells for energy storage applications. Earlier, the team backed Holaluz, a Spanish solar provider, in a $7.6 million funding round and supported Enpal’s subscription-based solar platform. Investments in VOI Technology’s dockless electric scooters and Wirelane’s charging stations for electric vehicles highlight its role in next-generation mobility. A stake in Tomorrow, a sustainable banking app, further shows ABACON CAPITAL’s interest in services that align finance with carbon footprint tracking.
