This study is about the major determinants for the successful implementation of technology roadmap in the technology intensive organization. For this study, I defined the concept of the Strategic Technology Roadmap and its characteristics. I also studied the key processes of the Strategic Technology Roadmap and the major success factors for the implementation of it. The study was performed based on the theoretical study and related qualitative case study approaches. In this study, the Smart Grid Technology Roadmap implementation process was deeply analyzed. From the initial adoption stage of the roadmap development to the actual utilization of it was scrutinized. Through the case study the major determinants for the adoption of the smart grid technology roadmap can be summarized as follows; the top management support for the implementation of the Strategic Technology Roadmap, the relevance - the goodness of the fit - of the Roadmap, the organizational capability among the functional teams such as strategy planning team, marketing team, R&D Project teams. This study regarding the adoption of the Strategic Technology Roadmap can be the good reference for the Technology organization which is willing to adopt and utilize the Strategic Technology Roadmap in the future. Index Terms—strategic technology roadmap, implementation, smart grid.