ABACON Capital

ABACON Capital is a family-owned investment firm and the entrepreneurial investment holding of the Büll Family Office, founded in 2021 and headquartered in Hamburg, Germany. The firm invests across both public and private markets, with a thematic focus on Energy Transition, Deep Tech, and Real Estate. Its portfolio spans companies in energy storage, energy services, sustainable mobility, and deep technology, with investments recorded at Seed through Series B and beyond. ABACON operates as a long-term oriented investor and, beyond capital, provides portfolio companies with operational insights and strategic support drawn from its entrepreneurial background. The firm has made approximately 19–26 investments as of Sep 2026 and has led a minority of rounds, typically co-investing alongside other venture capital firms and strategic partners.