The Gas- und Wärme-Institut Essen e.V. (GWI) is a non-profit and independent research institute that has been involved in addressing the energy topics of the future together with its members, partners and customers for many decades. In the course of the energy transition, the GWI has developed into a technology-open Energy Institute that is engaged in numerous research projects at state, federal and EU level as part of its academic and application-oriented research and development work.  Due to the close interaction between the departments of Research and Development, Training and Consulting Center, Testing Laboratory and L-H Gas Market Conversion, GWI has created extensive possibilities to support the transformation of the energy system on all levels of the technology chain including production, supply and end-use.