Abstract The aim of the present study was to explore Critical Success Factors (CSFs) in implementation, pre-implementation and post-implementation phases of ERP system. A single exploratory case study approach has been employed to analyze the case of an electric supply Government owned company of Pakistan. For the collection of data face-toface in-depth interviews were conducted. NVivo 10 software has been used for the in-depth qualitative analysis. Many techniques have been used for the validation of different themes of the study such as Coding Nodes, Word Tree, Word Tag Clouds and Tree Map. This study found six CSFs of ERP in pre-implementation phase, twelve CSFs during the phase of ERP implementation and six CSFs in pre-implementation stage. This study also gives general recommendations for ERP consultants and ERP end-user companies for the successful implementation of ERP system
