With the increasing energy demand, technology and computer technology, with the development of technology, it has become compulsory to use in electricity networks. Many smart grid projects have been implemented, including the establishment of advanced measuring infrastructure, smart meter installation, electricity generation from renewable energy sources, energy efficiency, use of electric vehicles and smart buildings. Many developed and developing countries have created platforms for developing Smart Grids and have set up a roadmap for smart grids. In particular, the main purpose of the European Union; By 2020, it was possible to integrate renewable energy sources by 20%, increase energy efficiency by 20% and reduce carbon emissions by 20%. The US government finances several smart grid projects in its country with a certain amount of repayment. Japan launched smart city pilot applications by taking smart grid projects one step further. This study has enabled us to explore projects that have taken place and planned around the world. Europe, the US, Japan, China, South Korea, Canada and Australia has become interested in smart grids. In this study, development and project examples of smart grids worldwide have been investigated.