[en] The International Project on Innovative Nuclear Reactors and Fuel Cycles (INPRO) was started in 2001 on the basis of IAEA General Conference resolution GC(44)/RES/21. INPRO activities have since been continuously endorsed by IAEA General Conference resolutions and by the General Assembly of the United Nations. The objectives of INPRO are to help ensure that nuclear energy is available to contribute, in a sustainable manner, to the goal of meeting the energy needs of the 21st century, and to bring together technology holders and users so that they can jointly consider the international and national actions required for ensuring sustainability of nuclear energy through innovations in technology and/or institutional arrangements. To fulfill these objectives, INPRO has developed a set of basic principles, user requirements and criteria, and an assessment method which, taken together, comprise the INPRO methodology for the evaluation of the long term sustainability of innovative nuclear energy systems. The INPRO methodology is documented in IAEA-TECDOC-1575 Rev.1, comprising an overview volume and eight additional volumes covering economics, institutional measures (infrastructure), waste management, proliferation resistance, physical protection, environment (impact of stressors and availability of resources), safety of reactors, and safety of nuclear fuel cycle facilities. This publication is the final report of an assessment of the planned nuclear energy system of Belarus using the INPRO methodology. The assessment was performed in 2009-2011 by Belarusian experts in a strategic partnership with the Russian Federation and with support from the IAEA's INPRO Group