AMCI Group is a private equity investment firm based at 600 Steamboat Road in Greenwich, Connecticut. Specializing in middle-market companies, the firm invests across the energy and metals value chain, combining financial backing with hands-on operational expertise to support growth and efficiency.
Having committed more than $1.5 billion across over forty transactions, AMCI focuses on companies involved in mining equipment, technology and services (METS), steelmaking coal, minerals and base metals. It also maintains positions in energy resources such as power and coal trading. To ensure integrated supply chains, the firm invests in shipping and logistics operations that support its core resource businesses. Its portfolio spans roughly twenty companies across North America, Europe, Asia and Australia. Partnerships with leading private equity firms, including Riverstone Holdings, Blackstone Group and First Reserve, further extend its global reach and operational capabilities. The investment philosophy emphasizes securing risk-adjusted returns by enhancing operational performance and pursuing strategic expansions.
AMCI has expanded into clean technology through special purpose acquisition companies (SPACs) that brought businesses like LanzaTech Global—a carbon capture and transformation platform—to public markets via AMCI Acquisition Corp. II. That February 2023 merger created the first U.S.-based carbon capture technology company in public trading, enabling LanzaTech to convert waste carbon into fuels, fabrics and packaging materials. Similarly, the AMCI Acquisition Corp. merger with Advent Technologies provided growth capital for high-temperature polymer electrolyte membrane fuel cells and hydrogen systems applied in heavy-duty automotive, aviation and industrial energy settings. The firm’s involvement has provided capital, strategic direction and market access, positioning these companies to advance industrial decarbonization. While direct investment in traditional battery manufacturing is not detailed, AMCI’s stakes in exploration and mining ventures focused on lithium, nickel and cobalt reflect an engagement with the materials vital to energy storage and battery supply chains.
