ECONOMICS, MANAGEMENT AND ORGANIZATION OF CONSTRUCTION PROCESSES

Model of evaluating the projected payback period in energy preservation

Vestnik MGSU 12/2015
  • Gorshkov Aleksandr Sergeevich - St. Petersburg Polytechnic University (SPbPU) Candidate of Technical Sciences, director, Educational and Scientific Center “Monitoring and Rehabilitation of Natural Systems, St. Petersburg Polytechnic University (SPbPU), 29 Politekhnicheskaya str., 195251, Saint Petersburg, Russian Federation.

Pages 136-146

Providing energy efficiency of newly designed buildings is an important state task which is considered in EPBD directive and the latest regulations on energy saving. Though reducing energy consumption of the existing building is not less important. The majority of the existing buildings had been built before the implementation of modern energy saving programs. That’s why the volume of energy consumption in the existing buildings is greater than in new buildings. In frames of the given investigation the author considers the problem of forecasting the payback period of investment into reduction of energy consumption in a building. The formula is offered for calculating the projected payback period in energy saving with account for capital costs, calculated or actual value of the achieved energy saving effect, rise in tariffs for energy sources, discounting of the future cash flows and the volume and time for return of credit funds. Basing on the offered calculation methods it is possible to compare the efficiency of different energy saving solutions.

DOI: 10.22227/1997-0935.2015.12.136-146

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