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Mapping of heat and electricity consumption in a medium size municipality in Sweden
Mälardalen University, School of Business, Society and Engineering, Future Energy Center. Högskolan Dalarna, Sweden.ORCID iD: 0000-0002-3630-663X
Högskolan Dalarna, Sweden.ORCID iD: 0000-0002-9943-9878
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0001-9230-1596
2017 (English)In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 105, p. 1434-1439Article in journal (Refereed) Published
Abstract [en]

The Nordic electricity system faces many challenges with an increased share of intermittent power from renewable sources. One such challenge is to have enough capacity installed to cover the peak demands. In Sweden these peaks appear during the winter since a lot of electricity is used for heating. In this paper a mapping of the heat and electricity consumption in a medium size municipality in Sweden is presented. The paper analyze the potential for a larger market share of district heating (DH) and how it can affect the electrical power balance in the case study. The current heat market (HM) and electricity consumption is presented and divided into different user categories. Heating in detached houses not connected to DH covers 25 % of the HM, and 30 % of the electricity consumption during the peak hours. Converting the detached houses not connected to DH in densely populated areas to DH could reduce the annual electricity consumption by 10 %, and the electricity consumption during the peak hours by 20 %.

Place, publisher, year, edition, pages
2017. Vol. 105, p. 1434-1439
National Category
Energy Engineering
Research subject
Energy, Forests and Built Environments
Identifiers
URN: urn:nbn:se:mdh:diva-34252DOI: 10.1016/j.egypro.2017.03.534ISI: 000404967901080Scopus ID: 2-s2.0-85020728483OAI: oai:DiVA.org:mdh-34252DiVA, id: diva2:1056858
Funder
Knowledge FoundationAvailable from: 2016-12-15 Created: 2016-12-15 Last updated: 2019-09-16Bibliographically approved
In thesis
1. The impact on the energy system of heating demands in buildings: A case study on district heating and electricity for heating in Falun, Sweden
Open this publication in new window or tab >>The impact on the energy system of heating demands in buildings: A case study on district heating and electricity for heating in Falun, Sweden
2017 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Västerås: Mälardalen University, 2017
Series
Mälardalen University Press Licentiate Theses, ISSN 1651-9256 ; 250
National Category
Energy Engineering
Research subject
Energy- and Environmental Engineering
Identifiers
urn:nbn:se:mdh:diva-34255 (URN)978-91-7485-305-6 (ISBN)
Presentation
2017-02-09, Högskolan Dalarna, Borlänge, 13:00 (Swedish)
Opponent
Available from: 2016-12-15 Created: 2016-12-15 Last updated: 2018-01-03Bibliographically approved
2. Heating of buildings from a system perspective
Open this publication in new window or tab >>Heating of buildings from a system perspective
2019 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Energy efficiency measures in buildings are considered to have great potential for reducing total energy use, and contribute to a reduced climate and environmental impact. In Sweden, however, there is a focus on bought energy, which does not always reflect the environmental and climate impact. Focusing on bought energy means that a house owner may choose an electricity based heat pump instead of district heating (DH), since heat pumps result in less bought energy compared to DH.

The energy system surrounding the buildings is affected by the choice of energy carriers used for heating. This thesis uses three different methods to study how the energy system is affected. In the first part, primary energy use has been calculated for a simulated building with different heating systems, resulting in different electricity and DH demands. The second part studies the impact on peak demand and annual consumption in the power grid and DH system due to different market shares of electricity based heating and DH. In the third part, the life cycle cost is calculated for different heating solutions from both a building and a socio-economic perspective, for 100 % renewable energy system scenarios.

The results show that the choice of energy carrier has a great influence on primary energy use. However, this depends even more on the calculation method used. Which heating solution, and thus which energy carrier, gives the lowest primary energy use varies with the different methods.

The power grid and DH system are affected by the choice of energy carrier. There is a potential to lower peak demand in the power grid by more efficient heat pumps. But an even greater potential is shown by using DH instead of electricity based heating. A larger share of DH also allows the production of more electricity with the use of combined heat and power.

The life cycle cost for different heating solutions also depends on the method used. From a building owner’s perspective, with current electricity and DH prices, electricity based heating is more economical. However, from a socio-economic perspective, with increasing electricity system costs due to a larger share of variable electricity production in a 100 % renewable system, DH becomes more economically profitable in several scenarios.

The choice of energy carrier for heating in buildings affects the energy system to a high degree. A system perspective is therefore important in local, national and global energy efficiency policies and projects.

Place, publisher, year, edition, pages
Västerås: Mälardalen University, 2019
Series
Mälardalen University Press Dissertations, ISSN 1651-4238 ; 297
National Category
Energy Systems
Research subject
Energy- and Environmental Engineering
Identifiers
urn:nbn:se:mdh:diva-45230 (URN)978-91-7485-439-8 (ISBN)
Public defence
2019-11-05, Sal 320, Högskolan Dalarna, Borlänge, 13:00
Opponent
Supervisors
Available from: 2019-09-18 Created: 2019-09-16 Last updated: 2019-09-30Bibliographically approved

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Swing Gustafsson, MoaDotzauer, Erik

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