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Enhancing Energy Efficiency in Residential Buildings: Insights from the Staccato Project

The Staccato project, part of the CONCERTO initiative co-funded by the European Commission, focuses on energy-efficient renovation strategies in residential buildings. Presented at the International Conference on Energy Efficient Renovation, this initiative addresses challenges faced in urban restoration and proposes solutions through integrated approaches. Key aspects include successful examples of thermal insulation, energy-efficient technologies, and stakeholder engagement. Findings aim to provide valuable recommendations for effective renovation measures and enhance quality of life in urban settings.

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Enhancing Energy Efficiency in Residential Buildings: Insights from the Staccato Project

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  1. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme International Conference on Energy Efficient Renovation in Residential Building Sector28-29 June 2010 Analyses and recommendations from CONCERTO refurbishment projects Doris Österreicher Austrian Institute of Technology

  2. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme International Conference on Energy Efficient Renovation in Residential Building Sector28-29 June 2010 Index • CONCERTO initiative • Renovation measures in CONCERTO cities • Challenges and solutions • Recommendations • Examples

  3. Polygeneration RenewableEnergy Energy efficiency Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme INTEGRATIVE APPROACH • Monitoring • Training • Research International Conference on Energy Efficient Renovation in Residential Building Sector28-29 June 2010 CONCERTO initiative (I.)

  4. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme International Conference on Energy Efficient Renovation in Residential Building Sector28-29 June 2010 CONCERTO initiative (II.) CONCERTO 58 cities 23 countries

  5. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme International Conference on Energy Efficient Renovation in Residential Building Sector28-29 June 2010 Building typedistribution by country

  6. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme International Conference on Energy Efficient Renovation in Residential Building Sector28-29 June 2010 Building typedistributionbyoccupancy (I.)

  7. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme Building typedistribution by occupancy (II.) Realisation (2009): ~ 190.000 m²GFA renovated (~ 50% of the target) ~ 270.000 m²GFAnew built (~ 20% of the target)

  8. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme International Conference on Energy Efficient Renovation in Residential Building Sector28-29 June 2010 Framework for implementation • Urban restoration projects: rehabilitation of the whole area • Miscellaneous developers and architectural typologies • Not only energy-efficient renovation, but also re-planning a new layout for the public space, increase in quality of life for the citizens • The main challenge: integration of all stakeholders • Renovation programmes (municipal housing companies, social/non-commercial housing…) • focus on energy efficiency • other aspects in the background • fewer stakeholders involved • 3 examples of large-scale renovation with vacant possession • Majority of realised renovations have beencarried out in occupied buildings

  9. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme Renovation measures • Thermal insulation of outer walls • Thermal insulation of the roof / of the upper storey's ceiling • Thermal insulation of cellar • Change of windows • Thermal bridge handling • Airtightness enhancement • Ventilation system with heat recovery • Heating system replacement (boiler change, solar collectors, DH) • Reduction of distribution losses • Photovoltaic modules • Building automation for further energy savings • Information systems for users • Other measures to increase acceptance of measures Most common measures

  10. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme U-values of outer walls CentralEuropean Countries Northern European Countries Passive house standard

  11. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme Energy efficiencyand renewable energy

  12. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme Financial aspects • Collectionofcostdatais a difficulttask: • The datastructurediffers in everycountryorevenconstructionsite • Genralhesitationtopresentdetailedcost • Exampleofresidentialbuildingrenovation in Hanover in 2006(1 yr. measurement: heating + DHW with HGT-correction):~ 40% ofheatingdemandafter renovationisusedforDHW Residential buildingsHanover yr.1954, ~ 1500 m² ~ 210 €/m² ~ 75 €/m² Data: project act2, monitoring e4-consult

  13. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme Technical aspects • Only few examples of comprehensive renovation measures leading to high energy performance standards: • “exceptional” comprehensive renovation measures implemented with vacant possession (high costs, limited replicability) • highest effort made in Central European cities: CONCERTO funding is combined with local and national funding (in Hanover 22% of the total costs are covered) • first experience in Southern European cities: only partial renovation measures are implemented (due to low funding rate) • gaps between measures planned and actually implemented: • partial renovations implemented in many cases (in particular for one-family houses) • ventilation systems: no supply and exhaust ventilation system with heat recovery; mostly exhaust ventilation units, sometimes in combination with exhaust air heat pumps

  14. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme Challenges & solutions (I.)

  15. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme Challenges & solutions (II.)

  16. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme Recommendations (I.) Large-scalerenovation High-qualityrenovation QUALITY? QUANTITY? • High levelofenergy-performance • Example Delft: Quality assuranceforrenovationworks was contractuallyarrangedbetweendeveloperandconstructioncompanies (based on infraredthermographyandblow-doortest) • Developerplays a decisiverole in qualityassuranceofperformedworks • High numberofrenovatedbuildings • Example Amsterdam Nieuw West: temporaryhousingassociation (Far West) coordinatedtherenovationofseveralbuildingsownedby different housingassociationsandarelocatedwithinonequarter

  17. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme Recommendations (II.) • High primary energy saving reached by combining thermal insulation and change to renewable energy technologies (biomas boiler) or district heating • First monitoring data confirm high share of heating energy demand for hot water preparation: ~ 40% total heating energy demand • Renovation without ventilation: cost reduction, however risk of bad air quality / mildewing in case of inadequate thermal bridge handling • Quality assurance should be contractually arranged (construction company). e.g. air quality testing in model flat

  18. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme Recommendations (III.) • -Planningandimplementationprocess: Involvementof relevant stakeholders; accompanyingmeasures (indenpendentqualitycontrol, detailedcostinformation, pros & contras) • -Institutionalcontext: Involvementoflocalstakeholders (municipalities); politicalsupportoftheprojectfromthebeginning on (large-scalerenovation) • - Compositionofstakeholders(public/private); wideconsensus in caseof large-scalerenovationprojects indispensable • Choice ofaccompanyingmeasures: socioeconomicmeasures; involvementoftenantsbyinformationcampagins; „soft measures“ • Implementationofinitialdemonstraionproject (e.g. usingspecificfunding) as a driver

  19. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme Examples (I.) • Delft/Netherlands • POPTAHOF • Socialhousing • Renovation of multi-storeyresidentialbuildings • New externalinsulation • Change of windows • Districtheatingconnection • Socioeconomicaspects: newplaygrounds, kitchengarden, tenantstakepart in decision-making • Vacantpossession

  20. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme Examples (II.) • Hanover/Germany • Change of gas boilerwithdistrictheatingconnection • Thermal insulationofouterwalls • Analyse andhandlingof thermal bridges • Nomechanicalventilationeventhoughhightightnessofthebuildingshell; thereforeregularairqualitytesting in theflats

  21. Staccato is a project of the concerto initiative co-funded by the European Commission under the Sixth Framework Programme International Conference on Energy Efficient Renovation in Residential Building Sector28-29 June 2010 Thank you for your attention ! Doris Österreicher doris.oesterreicher@ait.ac.at

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