Brøgger, Morten

Kragh, Jesper

Wittchen, Kim Bjarne

In the municipality of Sønderborg, in the southern part of Jutland, there is a shining example initiated in 2007, ProjectZero, of a local initiative that have resulted in extensive energy savings in residential buildings and at the same time created local workplaces. The intension with the pilot is to investigate the possible energy reduction in Denmark if the same approach was made for the entire Danish building stock. Deployment of this methodology on national scale will not be straight forward as it requires strong local support. In Sønderborg the local business and clean-tech companies have strongly supported the project. Additionally, one of the driving forces has been the creation of something unique among the local residents and feeling to be able to create local unity. This cannot easily be made nationally. Never the less, playing with the idea about a nationwide dissemination will demonstrate the possibilities for energy savings and creation of local jobs if a community strives for a common goal. It is the aim of the Danish government that Danish buildings should be free of fossil fuels by 2035. To be able to reach that goal, it is estimated that the energy consumption in the existing building stock should be reduced by a minimum of 50 % and business-as-usual may not be sufficient

    Aalborg UniversitetLocal initiative extrapolated to nationWittchen, Kim Bjarne; Kragh, Jesper; Brøgger, MortenPublication date:2015Document VersionPeer reviewed versionLink to publication from Aalborg UniversityCitation for published version (APA):Wittchen, K. B., Kragh, J., & Brøgger, M. (2015). Local initiative extrapolated to nation: Denmark. Poster sessionpresented at EPISCOPE Experts' Workshop, Brussels, Belgium.General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright ownersand it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.            ? Users may download and print one copy of any publication from the public portal for the purpose of private study or research.            ? You may not further distribute the material or use it for any profit-making activity or commercial gain            ? You may freely distribute the URL identifying the publication in the public portal ?Take down policyIf you believe that this document breaches copyright please contact us at vbn@aub.aau.dk providing details, and we will remove access tothe work immediately and investigate your claim.Downloaded from vbn.aau.dk on: April 30, 2017SCOPE OVERVIEW OF ACTIVITIES In the municipality of Sønderborg, in the southern part of Jutland, there is a shining example initiated in 2007, ProjectZero, of a local initiative that have resulted in extensive energy savings in residential buildings and at the same time created local workplaces. The intension with the pilot is to investigate the possible energy reduction in Denmark if the same approach was made for the entire Danish building stock.  Deployment of this methodology on national scale will not be straight forward as it requires strong local support. In Sønderborg the local business and clean-tech companies have strongly supported the project. Additionally, one of the driving forces has been the creation of something unique among the local residents and feeling to be able to create local unity. This cannot easily be made nationally.  Never the less, playing with the idea about a nationwide dissemination will demonstrate the possibilities for energy savings and creation of local jobs if a community strives for a common goal. It is the aim of the Danish government that Danish buildings should be free of fossil fuels by 2035. To be able to reach that goal, it is estimated that the energy consumption in the existing building stock should be reduced by a minimum of 50 % and business-as-usual may not be sufficient. FINDINGS OF SCENARIO ANALYSES Registered energy consumption, in the national Building and Dwelling stock register, in the ZeroHome homes in Sønderborg from the construction period before 1980 show an average energy consumption of 136 kWh/m² per year. The national average for single family homes constructed in the same period is 151 kWh/m² per year. Energy consumption on the ZeroHome group is thus significantly lower than the national average. Compared to the national average, ZeroHome homes, have obtained a reduction in energy consumption of 10%, and compared to the reference group of homes in Sønderborg a reduction of 28%. This is not in line with the needs for energy savings in the Danish tertiary sector until 2050, but in line with what can be expected for energy upgrading of building components when making a renovation according to the requirements laid out in the Danish Building Regulations 2010. The business-as-usual scenario for energy upgrading of the existing building stock (when replacing or upgrading building elements), will deliver energy savings around 28%. Analyses of impact from various tightenings of the building energy requirements will improve the results significantly. Such tightenings are implemented in the new 2015 Danish Building Regulations.  LESSONS LEARNED & RECOMMENDATIONS The overall goal of ProjectZero is to get the entire Sønderborg-area involved in the vision of creating a CO2-neutral growth area before 2029, creating and demonstrating new solutions, robust measurable CO2 reductions, new green jobs and a talented generation of young people. The public-private partnership – ProjectZero – was created to inspire and drive Sønderborg´s transition to a ZERO carbon community by 2029, based on improved energy efficiency, conversion of energy sources into renewables and by creating participation of all stakeholders to reach the ambitious goal: CO2-neutral growth and sustainable urban development. Since 2009, about 1,200 home-owners have received free energy advice and more than 900 home-owners have already made contracts with local resources for implementation of building energy upgrading. In total there are about 18,600 home owners in the Sønderborg municipality. Additionally, ProjectZero has attracted significant capital investments from industry and created around 1000 new jobs every year, both in the local area and in Denmark as a whole.  The main reason for success is that the projectZero approaches CO2-reduction holistically ensuring an unbroken chain: building owner, energy expert, local designers, craftsmen, and banks to ease implementation of energy saving measures in homes.  CONTACT NAME Kim Wittchen, Jesper Kragh & Morten Brøgger ORGANISATION Danish Building Research Institute, Aalborg University, Copenhagen E-MAIL kbw@SBi.aau.dk, jkr@SBi.aau.dk & mbr@SBi.aau.dk  STATUS: 10/2015 SCALE Local scaled to national level [image/s stock] NUMBER OF DWELLINGS 2 636 586 NUMBER OF BUILDINGS 1 547 037 NUMBER OF INHABITANTS 5 678 348 m2 NATIONAL REFERENCE AREA 304 749 000 m² – gross heated floor area m² EPISCOPE REFERENCE AREA 259 036 650 m² Local initiative extrapolated to nation DENMARK 020406080100120140160180200ZeroHome ReferenceSønderborgReferenceDenmarkkWh/m² per year Construction year before 1980after 1980120.000130.000140.000150.000160.000170.000180.000190.000200.000210.0002010 2015 2020 2025 2030 2035 2040 2045 2050Business-as-usual (BAU)Full BR complianceBAU + more strict roof requirementsBAU + more strict wall requirementsBAU + more strict window requirementsBAU + longer roof service lifeBAU + all roofs upgraded untill 2050BAU + mech. vent. and HRCBAU + solar domestic hot waterAll requirements more strictAll requirements more strict + vent. & HRCTJ/year 

Local initiative extrapolated to nation:Denmark

In the municipality of Sønderborg, in the southern part of Jutland, there is a shining example initiated in 2007, ProjectZero, of a local initiative that have resulted in extensive energy savings in residential buildings and at the same time created local workplaces. The intension with the pilot is to investigate the possible energy reduction in Denmark if the same approach was made for the entire Danish building stock. Deployment of this methodology on national scale will not be straight forward as it requires strong local support. In Sønderborg the local business and clean-tech companies have strongly supported the project. Additionally, one of the driving forces has been the creation of something unique among the local residents and feeling to be able to create local unity. This cannot easily be made nationally. Never the less, playing with the idea about a nationwide dissemination will demonstrate the possibilities for energy savings and creation of local jobs if a community strives for a common goal. It is the aim of the Danish government that Danish buildings should be free of fossil fuels by 2035. To be able to reach that goal, it is estimated that the energy consumption in the existing building stock should be reduced by a minimum of 50 % and business-as-usual may not be sufficient.In the municipality of Sønderborg, in the southern part of Jutland, there is a shining example initiated in 2007, ProjectZero, of a local initiative that have resulted in extensive energy savings in residential buildings and at the same time created local workplaces. The intension with the pilot is to investigate the possible energy reduction in Denmark if the same approach was made for the entire Danish building stock.Deployment of this methodology on national scale will not be straight forward as it requires strong local support. In Sønderborg the local business and clean-tech companies have strongly supported the project. Additionally, one of the driving forces has been the creation of something unique among the local residents and feeling to be able to create local unity. This cannot easily be made nationally.Never the less, playing with the idea about a nationwide dissemination will demonstrate the possibilities for energy savings and creation of local jobs if a community strives for a common goal. It is the aim of the Danish government that Danish buildings should be free of fossil fuels by 2035. To be able to reach that goal, it is estimated that the energy consumption in the existing building stock should be reduced by a minimum of 50 % and business-as-usual may not be sufficient

    Aalborg UniversitetLocal initiative extrapolated to nationDenmarkWittchen, Kim Bjarne; Kragh, Jesper; Brøgger, MortenPublication date:2015Document VersionAccepted author manuscript, peer reviewed versionLink to publication from Aalborg UniversityCitation for published version (APA):Wittchen, K. B., Kragh, J., & Brøgger, M. (2015). Local initiative extrapolated to nation: Denmark. Posterpresented at EPISCOPE Experts' Workshop, Brussels, Belgium.General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright ownersand it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.            ? Users may download and print one copy of any publication from the public portal for the purpose of private study or research.            ? You may not further distribute the material or use it for any profit-making activity or commercial gain            ? You may freely distribute the URL identifying the publication in the public portal ?Take down policyIf you believe that this document breaches copyright please contact us at vbn@aub.aau.dk providing details, and we will remove access tothe work immediately and investigate your claim.Downloaded from vbn.aau.dk on: August 24, 2021SCOPE OVERVIEW OF ACTIVITIES In the municipality of Sønderborg, in the southern part of Jutland, there is a shining example initiated in 2007, ProjectZero, of a local initiative that have resulted in extensive energy savings in residential buildings and at the same time created local workplaces. The intension with the pilot is to investigate the possible energy reduction in Denmark if the same approach was made for the entire Danish building stock.  Deployment of this methodology on national scale will not be straight forward as it requires strong local support. In Sønderborg the local business and clean-tech companies have strongly supported the project. Additionally, one of the driving forces has been the creation of something unique among the local residents and feeling to be able to create local unity. This cannot easily be made nationally.  Never the less, playing with the idea about a nationwide dissemination will demonstrate the possibilities for energy savings and creation of local jobs if a community strives for a common goal. It is the aim of the Danish government that Danish buildings should be free of fossil fuels by 2035. To be able to reach that goal, it is estimated that the energy consumption in the existing building stock should be reduced by a minimum of 50 % and business-as-usual may not be sufficient. FINDINGS OF SCENARIO ANALYSES Registered energy consumption, in the national Building and Dwelling stock register, in the ZeroHome homes in Sønderborg from the construction period before 1980 show an average energy consumption of 136 kWh/m² per year. The national average for single family homes constructed in the same period is 151 kWh/m² per year. Energy consumption on the ZeroHome group is thus significantly lower than the national average. Compared to the national average, ZeroHome homes, have obtained a reduction in energy consumption of 10%, and compared to the reference group of homes in Sønderborg a reduction of 28%. This is not in line with the needs for energy savings in the Danish tertiary sector until 2050, but in line with what can be expected for energy upgrading of building components when making a renovation according to the requirements laid out in the Danish Building Regulations 2010. The business-as-usual scenario for energy upgrading of the existing building stock (when replacing or upgrading building elements), will deliver energy savings around 28%. Analyses of impact from various tightenings of the building energy requirements will improve the results significantly. Such tightenings are implemented in the new 2015 Danish Building Regulations.  LESSONS LEARNED & RECOMMENDATIONS The overall goal of ProjectZero is to get the entire Sønderborg-area involved in the vision of creating a CO2-neutral growth area before 2029, creating and demonstrating new solutions, robust measurable CO2 reductions, new green jobs and a talented generation of young people. The public-private partnership – ProjectZero – was created to inspire and drive Sønderborg´s transition to a ZERO carbon community by 2029, based on improved energy efficiency, conversion of energy sources into renewables and by creating participation of all stakeholders to reach the ambitious goal: CO2-neutral growth and sustainable urban development. Since 2009, about 1,200 home-owners have received free energy advice and more than 900 home-owners have already made contracts with local resources for implementation of building energy upgrading. In total there are about 18,600 home owners in the Sønderborg municipality. Additionally, ProjectZero has attracted significant capital investments from industry and created around 1000 new jobs every year, both in the local area and in Denmark as a whole.  The main reason for success is that the projectZero approaches CO2-reduction holistically ensuring an unbroken chain: building owner, energy expert, local designers, craftsmen, and banks to ease implementation of energy saving measures in homes.  CONTACT NAME Kim Wittchen, Jesper Kragh & Morten Brøgger ORGANISATION Danish Building Research Institute, Aalborg University, Copenhagen E-MAIL kbw@SBi.aau.dk, jkr@SBi.aau.dk & mbr@SBi.aau.dk  STATUS: 10/2015 SCALE Local scaled to national level [image/s stock] NUMBER OF DWELLINGS 2 636 586 NUMBER OF BUILDINGS 1 547 037 NUMBER OF INHABITANTS 5 678 348 m2 NATIONAL REFERENCE AREA 304 749 000 m² – gross heated floor area m² EPISCOPE REFERENCE AREA 259 036 650 m² Local initiative extrapolated to nation DENMARK 020406080100120140160180200ZeroHome ReferenceSønderborgReferenceDenmarkkWh/m² per year Construction year before 1980after 1980120.000130.000140.000150.000160.000170.000180.000190.000200.000210.0002010 2015 2020 2025 2030 2035 2040 2045 2050Business-as-usual (BAU)Full BR complianceBAU + more strict roof requirementsBAU + more strict wall requirementsBAU + more strict window requirementsBAU + longer roof service lifeBAU + all roofs upgraded untill 2050BAU + mech. vent. and HRCBAU + solar domestic hot waterAll requirements more strictAll requirements more strict + vent. & HRCTJ/year 

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Local initiative extrapolated to nation:Denmark

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