The features of the assessment of the economic efficiency of energy saving projects based on the combination of traditional and renewable energy and material resources with an increasing degree of cogeneration of energy types and by-products are revealed. The object of the research is the formed energy-technology complex of objects or the industrial park, and the subject is the modeling of the processes of combining and cogeneration to determine the options for the best organizational and

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... cal solutions in projects for the development of renewable energy. The variants of projects for the transformation and landfill reclamation of an industrial area with a critical level of environmental pollution are substantiated.