The new color scale for voltage visualization, developed from the concept of human intelligence based on sense to interact better with the user's needs tests out better than the two color bar-chart method for large systems and especially for voltage profile identification. It is a step on the road to realization of the ultimate potential of the full graphics user interface hardware now a commonplace in energy management systems. The power system operator and engineer face analytical tasks of increasing complexity and shorter deadlines, compounded by more complex organizational structures stemming from deregulation. The improved computational speed of computer hardware is expected to help with these tasks.