Blockchain applications in smart grid

With the fast growth of the internet industry, particularly information technology, the smart grid concept has been developed. The smart grid is an attempt to enhance and rejuvenate the secondary sector (the traditional power sector). In the contemporary context, the goal of constructing smart grids is to create a fair and healthy competitive energy market environment. Simultaneously, doing so can help to safeguard the environment and achieve carbon neutrality. With the advent of blockchain, new ideas for smart grid solutions have been developed and implemented. From the standpoint of blockchain types, this article details the aims and contributions made by state of the art technologies, particularly in the field of security. Further, we summarize the shortcomings of existing technologies and the relatively understudied security topics. Then we propose recommendations and describe what the future smart grid should achieve in terms of security.