The restoration process of the bulk-power transmission system following a partial or a total blackout, has two main issues during a restoration, these are voltage control and frequency control. Special attention is therefore given to the behavior of network parameters, control equipments as they affect the voltage and frequency regulation during the restoration process. During restoration due to wide fluctuations in the frequency and voltage it becomes very difficult to maintain the integrity in the system. Inability to control the frequency may lead to unsuccessful restoration. Repeated collapse of the system Islands due to tripping of generators due to either over frequency or under frequency causes delay in getting normalcy. This paper considers aspects of computer application in restoration and Islanding in the context of Maharashtra State power system. During conditions of blackout, the process of Islanding can satisfy the power requirements for a particular area, thus assisting the grid operator as well as helping in reducing the time required for the complex restoration processes. The main obstacle in the process of restoration or Islanding is the number of switchgears located at various locations with different configurations. © 2008 Elsevier Ltd. All rights reserved.