In recent years, corporate initiatives to realize a decarbonized society have become an important topic. Against this backdrop, and in addition to its efforts aimed at the supply chain, Omika Works, Hitachi, Ltd.'s(Hitachi City, Ibaraki) has partnered with the local region to implement the Omika Green Network—a concept aimed at achieving carbon neutrality (net-zero emissions of greenhouse gases) over the entire value chain. This article presents the details of this concept.