During the planning stage of the EstLink 2 project the following studies were carried out: "Assessment of the impact of the EstLink 2 underground cable on the environment" and "Expert statement of the impact of the EstLink 2 submarine cable on the environment". In the above mentioned documents possible environmental threats posed by the installation of EstLink 2 were outlined in detail. Also, relief methods and best possible technologies were offered in order to minimize the impact on the environment.
As a result of the environmental assessment and expert statement it was conluded that the installation and operation of EstLink 2 does not involve an essentially negative impact (i.e. exceeding or reaching the established norms) on the environment.