The Main Principles of Objective Evaluation of Cost-Efficiency of Investments into Alternative Energy Sources for Buildings Energy Supply

Energy-saving has become a part of the governmental policy in Russian Federation in recent years. Alternative energy sources usage, e.g. solar radiation usage, are considered to be one of the most urgent trends of power consumption reduction in housing and communal sector. The absence of sufficient and objective information about alternative energy source is a real usage in the process of heat energy providing to the particular consumer, usually, leads to technically and economically unpractical decisions. This paper presents calculation algorithm and modern methods of evaluation of investments profitability into alternative energy sources, which reflect the structure of determining factors interaction and the sequence of main calculations of technical and economic indicators, needed for the reasoned decision about feasibility of exact energy-saving measures implementation.