Green Hydrogen Systems A/S designs and manufactures standardized and modular electrolysers in Europe. The company engages in electrolysis solutions related activities. It also provides related services to produce green hydrogen using renewable electricity. It serves busses and trucks, refineries, steel production, transportation, aviation, shipping, fertilizer, refueling stations, industrial facilities, and other sectors. The company was incorporated in 2007 and is headquartered in Kolding, Denmark.