Energy system transformation is a necessary component of the sustainable transformation of society. This position paper is aimed at interested parties from industry, research and politics. It is intended to help become familiar with the manufacturer-independent direct current (DC) grid as a promising solution to the problems and challenges facing industrial energy supply. Together, more than 40 partners from the projects DC-INDUSTRY and DC-INDUSTRY 2, which have been funded by the German Federal Ministry of Economics and Energy since 2016, have worked out basic principles for a DC infrastructure in industry.