This paper proposes an individual representation for optimizing allocation of static var compensators (SVCs). Generally, the individuals indicate the capacities of the devices in the optimal allocation of SVCs. In the proposed representation, capacities and installation places of SVCs are expressed in separate variables. The effectiveness of the proposed representation is verified by computer simulation in the 25-bus high-voltage distribution system. As a result, the type B is superior to the type A from the viewpoints of the convergence and the evaluation value. The SVC of 30 kVar is installed at node 24 using the proposed representation. The voltages at all nodes are maintained within the specified voltage range by installing the SVC at the optimal node.