Advent Technologies Holdings, Inc., an advanced materials and technology development company, operates in the fuel cell and hydrogen technology markets in North America and Europe. It develops, manufactures, and assembles fuel cell systems and critical components that determine the performance of hydrogen fuel cells and other energy systems. The company offers high temperature proton exchange membrane (HT-PEM) fuel cells; and electrodes for applications in the fuel cell and energy storage markets, as well as membrane electrode assemblies (MEA). It is also involved in the design of fuel cell stacks and complete fuel cell systems for stationary power, portable power, automotive, aviation, energy storage, and sensor markets. Advent Technologies Holdings, Inc. is headquartered in Livermore, California.