In order to lead a local government towards its politically set strategic objectives, the vision of the overall status quo, as well as of the desired target state of the complex multi-agent system have to be clear. To encounter the challenges of the change management in merging six former local governments into one, in forming a new NPM related operation model, in planning and leading strategic political objectives, and in order to leverage on the information usability produced in everyday governance practices, a Government Enterprise Architecture (GEA) method has been adopted in the city of Kouvola in Finland. The study is a case study by action research adopting the Finnish GEA method in situ by exploiting Gea grid adaptation model (Geagam). The required adaptation of the GEA grid for the case is described and the adoption analyzed.