Ensuring environmental safety is a serious problem that can be solved through environmental policy. The article considers the ecological efficiency of the systemic approach to the implementation of environmental policy in the context of the Rosatom State Atomic Energy Corporation. It is shown that the main feature of the Corporation's environmental policy is a systematic approach, which consists in the implementation of the following principles: planning, implementation, reporting, control, and

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... continuous improvement of environmental performance based on these principles. A decrease in the collective dose of personnel radiation exposure from 206.2 to 113.7 mSv during 15 years and a reduction of all types of harmful impact on the environment is shown based on experimental data. Implementation of the Federal Target Program for 2008-2015 allowed increasing the area of the rehabilitated territories almost twice, disposal of the spent fuel assemblies -by 1.2 times, number of the liquidated dangerous objects -by 1.3 times. The ecological efficiency of the implementation of the systemic approach in the environmental policy of the Corporation is shown based on specific factors indicating reduction of hazardous substances' emissions, discharges into water bodies, and waste generation, as well as factors indicating the efficiency of liquidation of the nuclear industry hazardous facilities and rehabilitation of radiation-contaminated areas. The systemic approach and high environmental efficiency performance allow recommending the Rosatom's best practices for the environmental policy implementation in other energy and industrial sectors.