It has been crucial to benefit from daylighting and artificial lighting together as an integrated system in educational buildings to use energy efficiently during the day, since a well-designed lighting increases learning and working performance. The aim was to find the optimum values for daylighting to achieve visual comfort conditions and artificial lighting design parameters for minimum energy consumption for an educational building. For this purpose, six rooms having different orientations, sizes, function and façade configuration were selected from case building, Department of Mechanical Engineering in İzmir Institute of Technology, to evaluate and propose energy efficient lighting design by retrofitting scenarios. The main concern was that none of the rooms had its own proper solution for façade design according to the recommendations for daylighting and energy efficient usage. Input paramaters such as fenestration, light shelves, shading devices, surface colours, lighting fixture types and layouts were studied in scenarios by using daylighting simulation tool, DIALux. In real life application, it is possible to benefit from daylighting effectively and to minimize energy consumption by using intelligent sensors connected to the shading automation systems. This would be the best solution for visual comfort and energy efficiency in buildings. Thus, this study focused on optimum values of the input parameters which would provide such foreknowledge for such systems. In order to obtain energy efficient lighting performance in an educational building, it is important to evaluate the results for retrofitting that will be a guide for designers, architects and researchers.