The main aim of the paper is to compare eigensensitivity technique with modal analysis technique for voltage profile improvement of the given power system network. In eigen sensitivity technique, Y-admittance matrix is partitioned by applying the circuit theory concept and is used for identification of weakest buses which are the suitable locations for the reactive power compensators. In modal analysis technique eigen values and eigen vectors are obtained for the load flow solution of the given power system network. Bus participation factors are obtained from eigen vectors of the eigen values and are used to identify the weakest buses in the given network to employ the reactive power compensators to enhance the voltage profile of the system. Here, the Interactive Power System Analysis software was used to implement the Static Var Compensator (SVC) at weakest buses. The implementation of eigen sensitive technique and modal analysis were performed using MATLAB. Both the techniques were applied to an IEEE 14 bus system and the results were compared. On comparison it is observed that the eigen sensitivity techniqueimproves voltage profile better than the modal analysis technique with a lesser number of SVCs. © Research India Publications.