Author(s)

T. Olofsson & E. Johnsson

Abstract

Computation of variations in net profit due to energy efficiency measures T. Olofssonl & E. ~ohnsson~ I Department of Applied Physics and Electronics, UmeG University, Sweden 2 NCC Engineering, NCC AB, Gothenburg, Sweden Abstract Savings from energy conservation can be evaluated on the basis of different measures, such as parameter studies, life cycle costing, and investment return in financial terms. In this paper, we report the development and evaluation of a tool for estimations of the return on financial investment in energy conservation. The tool was designed for evaluations in the design stage for commercial buildings. The method for calculating the investment return was based on three components: 1) An estimation of the building production cost. 2) A simulation of the energy use based on the building specification. 3) A traditional present value computation. From this calculation the investment return was calculated in terms of net profit, from the net rental income, property value and

Keywords