Energy business actors operating in the open energy market in Nordic countries like Finland, Sweden, Norway and Denmark are under intensive market pressure. This pressure forces the energy business actors continuously to improve their Management Information Systems (MIS). The power production portfolio in an individual energy business actor is affected by strategic decisions in longer period and power trading variables in the shorter period. In order to optimize the strategic decisions and power trading variables, this research study presents an overall definition of the MIS, specifically emphasize on its implementation perspectives on the energy market. In this paper, the authors presented a case study research as conducted within the Nordic energy sector with the objectives to implement the MIS and its solution perspective in the energy business sector. This study also presents the fundamentals of the case company's MIS architecture, its related challenges and future perspectives.