The integration of telecommunications in the energy grid, which is paving the way for Smart Grids, calls into question how the energy sector has historically ensured safe operations. New cyber security concerns exist, particularly in the areas of privacy, connection, and security management, which must be addressed effectively. Existing cyber security technologies and best practices are mostly derived from the old telecommunication context, where safety and availability requirements are less stringent. Lessons on how the oil and gas sector has coped with security concerns in the introduction of integrated operations can be used to Smart Grids. Smart Grids, on the other hand, face a somewhat different reality due to their wide geographic dispersion and large number of end-users. This study makes a contribution by providing an overview of cyber security problems for Smart Grids, as well as a plan for addressing these challenges in the near future. However, because many of the communication technologies now advocated for use by a smart grid are cyber-vulnerable, this might result in inconsistent system operations, resulting in wasteful spending and possibly disaster for both utilities and customers. We review the cyber security needs and potential vulnerabilities in smart grid communications in this study, as well as survey existing cyber security solutions for smart grid communications.