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Authorities in many countries have set objectives for emission reduction, and energy consumption of buildings has an essential role in achieving those target levels. At the moment, a big part of Finnish building stock is facing refurbishment needs. To transform the existing building stock towards energy-efficiency, it is of importance that all economically profitable energy saving measures would be executed within the refurbishments actions. However, in many cases the full energy saving potential is not exploited in refurbishment projects.
During the last years, numerous pilot projects have shown how energy consumption can be remarkably decreased. However, even in the case of all pilot projects had succeeded, their accelerating impact on refurbishment projects’ energy-efficiency would not have been enough to decrease the energy consumption of the whole building stock level so much that the set emission saving objectives would be achieved. Such macro scale impact is our target. In addition to successful pilot projects, there have been also cases, in which the impacts have not been as positive as expected. Disappointments together with noticeably higher investment costs, as compared to basic solutions, slow down the popularity of energy saving refurbishments much more than good examples are able to accelerate it.
In such climate conditions as Finland achieving nearly zero-energy level in refurbishments is so expensive that it is hard to give economically profitable reasons for decision-making. Hence, it would be more beneficial option to concentrate on ensuring that as big part of the economically profitable energy saving measures as possible would be executed within refurbishments. If this opportunity is not used now, it will soon be too late.
Because investors will always require profitability for their investments, it is important to use systematic methodology in energy saving measure related decision-making. In this way the effective allocation of financial resources can be ensured and energy economically profitable measures will probably be executed.