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Cooperation between construction- and energy sector to decrease the carbon emissions and primary energy use in Sweden

Panel: Panel 1. The foundations of future energy policies: Initiating change and breaking walls

Author:
Ola Larsson, WSP Environmental, Sweden

Abstract

WSP and Fourfact have together with the Construction and Energy sector in Sweden investigated and calculated which measures should be accomplished to decrease the carbon emissions and the primary energy use. The cost efficiency has been calculated for all measures, and one result was that the profit is generally higher for measures in the energy supply system compared to measures in the individual buildings.

Because of huge variations between district heating networks and because of the quantity of energy consumed by households is similar all over Sweden, the location of single houses and buildings is more important for their carbon footprints and for their primary energy use, than their individual energy consumption.

Our calculation shows, that the most efficient way to decrease carbon emissions and primary energy use in Sweden, is to convert all single houses heated by electricity into district heating. Since we use marginal energy for the calculations, the effect of converting single houses is greater compared to if the environmental factors from marginal energy were not used.

Since a majority of all single houses are heated by electricity, the potential of converting them to be heated by district heating is great.

In this project, we have created the useful excel tool Sture. With Sture, analyses of Sweden can be done, but also a person with basic knowledge of his or her house and energy use, can calculate which measures are suitable and cost efficient.

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