With the addition of smart meters and AMI, the need to provide cybersecurity to the energy and power infrastructure has also increased significantly. The Energy infrastructure is slowly turning from a mere physical infrastructure to a cyber-physical one with the addition of smart devices those are connected by communication networks. These nodes provide easy entry points for the attackers and other unauthorized persons. As the fiel only emerging the cybersecurity solutions are also just evolving.

The differences between the requirements of the legacy Internet and the network requirements of the smart grid also generate restrictions for the direct adoption of cybersecurity solutions developed for the former. This study will deal with solutions those are in existence, the ones those are developed and considered specifically for the smart grid and power infrastructure, their limitations and areas to improve and so on.