E-procurement gains its popularity through people's trends of using the internet. Transparancy factor of e-procurements is expected to reduce corruption in government projects, as an effort to achieve good corporate governance (GCG). The aim of this study was to analyze the impact of e-procurement in PT. PLN (Persero). Impacts were assessed by conducting structured interview to the people who were involved in procurement process, such as procurement committees, senior manager of e-procurement applications, business process owner, and developers at PT. PLN. This study focused on the gap analysis of conditions in PT. PLN before and after the implementation of e-procurement. This study concluded that the implementation of e-procurement in PT. PLN gave significant impacts on the total cost of acquisitions, organizational characteristics, governance structure, pre-sourcing business processes, and procurement quotation.