Energy and Sustainable Development Authors: Claudia Enzi, Gisela Fuchs, Daniela Gramer, Florian Ortner (SS 11)

 2006 the Austria parliament passed the “Bundesgesetz über die Pflicht zur Vorlage eines Energieausweises beim Verkauf oder und bei der In-Bestand-Gabe von Gebäuden und Nutzungsobjekten (Energieausweis Vorlage-Gesetz – EAVG)“  European law implemented into domestic law  Federal legal situation in Austria -> nine different building laws which regulate the energy performance certificate

   Federal state law regulates standards for new buildings, annex, and extensive improvements as well as calculation, contents, desgin, and competence to create the energy performance certificate Calculation models are different in all nine provinces Most important index: specific heating demand

(

Spezfischer Heizwärmebedarf HWB (Energiekennzahl))  Comparison value, which describes the thermal quality of the building envelope

  Unit: kilowatt hours per square meter and year (kWh/m 2 a) in relation to the reference location  specific heating demand (Spezifischer Heizwärmebedarf HWB (standortbezogen))  Needed heat for hot water, Needed energy for heating technology (Warmwasserwärmebedarf WWWB, Heiztechnikenergiebedarf HTEB)  Final energy demand (Endenergiebearf)

 gross-buliding area  Compactness (Kompaktheit)  Climate region  Climate data  U-data  Advantages of the energy performance certificate   Transparency on the real estate market Comparability

 Founded by Sustainable Building Association (in German DGNB) in collaborative partnership with the federal ministry of Transport, Building and Urban development (2007)  DGNB Association looks for solutions and measures to realize sustainable buildings

 Advantages of “Deutsches Gütesiegel Nachhaltiges Bauen:         Quantitative accountability Risk-minimizing planning Focus especially on the life cycle Adapted to German standards and construction planning Marketing tool Visibility of high quality of the building Evaluation of the performance of a building Adaptability to new technological realities



Methodical basis of the system

 originally developed for new buildings for office and administrative  Now, various evaluation systems for other types of buildings   The evaluation system includes six areas, 49 sub-criteria and a weighting factor:       Ecological quality (22,5 %) Economic quality (22,5 %) Socio-cultural and functional quality (22,5 %) Technical Quality (22,5 %) Process quality (10 %) and Quality of the location (the evaluation is separately) Label is avalable in:    50 %, the certificate is hand over in bronze 65 %, the constructor gets the label in silver 80%, the building receives the highest award, in gold.

    internationally-recognized green building certification system developed by the U.S. Green Building Council (USGBC) in 1998 A point based system (LEED points) LEED was created to:       define "green building" by establishing a common standard of measurement promote integrated, whole-building design practices recognize environmental leadership in the building industry stimulate green competition raise consumer awareness of green building benefits transform the building market

  Economic benefits of LEED:  Reducing of the maintenance costs reduced     Reduced liability, risk management cost savings measures Increased building valuation, optimize life-cycle economic performance Marketing advantages Certification benefits of LEED:  Third party validation of achievement      state and local government incentives knowledge base of energy and environmentally responsive buildings LEED certification plaque to mount on building Receive marketing exposure through USGBC Website Official certificate

 The different rating systems          for New Construction and Major Renovations (NC) for Existing Buildings: Operations & Maintenance (EB: O&M) for Commercial Interiors (CI) for Core & Shell (CS) for Schools (SCH) for Retail for Healthcare (HC) for Homes for Neighbourhood Development (ND)

 Seven LEED credit categories (five key areas and two additional fields):  Sustainable sites (SS)    Water efficiency (WE) Energy and Atmosphere (EA) Materials and Resources (MR)  Indoor environmental quality (IEQ)   Innovation in Design (ID) Regional Priority (RP)

 100 possible base points plus an  6 points for Innovation in Design and  4 points for Regional Priority  Certification by the following scale:   Certified 40–49 points Silver 50–59 points   Gold 60–79 points Platinum 80 points and above

       the first available assessment tool for buildings, developed in 1990 in the United Kingdom operated and launched by the Building Research Establishment (BRE) the first available assessment tool for buildings, developed in 1990 in the United Kingdom operated and launched by the Building Research Establishment (BRE) Was primarily used as an assessment tool for office buildings more than 200.000 buildings rated yet for existing as well as for new buildings

 a set of framework standards for the sustainability assessment of buildings    BS EN ISO 17024 (for BREEAM assessors) BS EN 45011 (for BREEAM assessment processes) ISO 9001 (for all BREEAM related activities)

 BREEAM is built upon several principles:   Measure the impact of the Environmental The application of quantified measures.

        Provide a flexible approach.

Use of best available science and best practice Integration of all three dimensions of sustainability – economic, social and environmental aspects The framework of assessment should include the ‘local’ link to regulation, climate and sector.

Experts in the field of construction are integrated both in the development and operational processes.

third party certification Minimization of costs.

Stakeholder involvement.

 Categories and their environmental weightings:           Energy (19 %), Transport (8 %), land use and ecology (10 %), health and wellbeing (15 %), Water (6 %), Waste (7.5 %), Materials (15.5 %), Pollution (10 %), management (12 %) and Innovation (10 %)

 BREEAM rating       Outstanding ≥ 85 Excellent ≥ 70 Very good ≥ 55 Good ≥ 45 Pass ≥ 30 Unclassified < 30