Energy efficient buildings: The Swiss experience

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1 Energy efficient buildings: The Swiss experience Chennai, October 7 th, 2010 Heinrich Gugerli, Head Sustainable Building Group heinrich.gugerli@zuerich.ch

2 City of Zurich Building Department Stadt Zurich Chennai, , page 2

3 Energy efficient buildings are a key to sustainable development Society Architecture Land Use Mobility Standard of Living/ Health Society Cultural Heritage Economy Buildings Financing / Investment Maintenance Costs Building materials Energy Soils/Landscapes Infrastructure Future Generations Environment Stadt Zurich Chennai, , page 3 Source: Recommendation SIA 112/1

4 Content 1. Swiss Energy Policy: 30 years experience Watt Society: From Science to Politics 3. MINERGIE: Swiss Low-Energy Standard 4. Swiss Cities: Front-runners for Sustainable Building Stadt Zürich Chennai, , page 4

5 1. SWISS ENERGY POLICY: 30 YEARS EXPERIENCE Stadt Zürich Chennai, , page 5

6 General framework: Swiss federal and cantonal governments Federal government: Legislation: Energy and CO 2 law Recommendations for electrical appliances, motors and vehicles EnergieSchweiz : program for energy efficiency and renewables Promotion program (including subsidies) States (Cantons): Building Regulations (Master Code) Introduction of advanced efficiency standards in the building field Promotion program Consulting centres Stadt Zurich Chennai, , page 6

7 Tasks of municipalities: City of Zurich Energy supply (power, gas, district heating) Municipal and energy planning Enforcement of the state energy legislation Information and promotion (e.g. Energy Coaching Program for private owners and design teams) Achieve impact by setting an example for public administration (Program 7 Mile Steps) Transportation policy: separate implementation within the framework of modern mobility culture Stadt Zurich Chennai, , page 7

8 Driving Forces towards energy efficiency in buildings Federal Programs Energy Cities Regulation, Enforcement 2000-Watt-Society Public investors Push Education Pilot projects Pull Investor MINERGIE Industry Codes Research Stadt Zurich Chennai, , page 8

9 WATT SOCIETY: FROM SCIENCE TO POLITICS Stadt Zürich Chennai, , page 9

10 2000-Watt-Society / City of Zurich Milestones 1998 Swiss Federals Institute of Technology (ETH) Sustainability Strategy 2001 Foundation of Novatlantis Sustainablity in the ETH Domain 2004 Technical Feasability White Book 2006 Zürich City council Agenda Zurich on the way to the 2000-Watt Society Watt Society in Zurich City Constitution Popular vote on November 30 th 2008: 76% Yes! 2010 Competence Center Federal Program for Energy Cities Stadt Zurich Chennai, , page 10

11 Stadt Zürich Chennai, , page 11

12 Stadt Zürich Chennai, , page 12

13 Fair Redistribution of Energy Resources: The 2000-Watt-Society Watt per person Industrialised countries: Watt. A small part of the population consumes most of the energy resources. Goal for 2050: 50 % Reduction of Fossil Energy by to CO2 500 India China World Switzerland Western Europe USA Stadt Stadt Zurich Zurich Amt für Hochbauten Chennai, , page 13

14 2000-W-Society: Contribution of Buildings Home Offices Schools e.g., Industry Building and construction Transportation Heating / Cooling Warm water Light and appliances Building Operation Stadt Zurich Chennai, , page 14

15 Relevance of Construction and Transportation SIA 2040 Guideline value (residential) Operation Construction Transportation New Retrofit New Retrofit New Retrofit Primary energy Total Primary energy Non renewable Greenhouse gas Stadt Zürich Chennai, , page 15

16 Stadt Zürich Chennai, , page 16

17 From Science to Political Program Konstanz, Singen, Überlingen, Radolfszell Friedrichshafen, Schaffhausen, Feldkirch S-chanf Chennai, , page 17

18 City of Zurich: Strategy energy supply Wind power Stadt Zürich Chennai, , page 18 District heating: Biomass Power Plant

19 City of Zurich: Transportation system for the 2000-Watt-Society Stadt Zürich Chennai, , page 19

20 City of Zurich: European energy award gold for best practice energy policy Spatial planning Municipal buildings, facilities Supply, disposal Mobility Internal organisation Communication, cooperation eea gold min 75 % Total Stadt Zurich Chennai, , page 20 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

21 3. MINERGIE : SWISS LOW-ENERGY STANDARD Stadt Zürich Chennai, , page 21

22 The MINERGIE History Milestones 1997 MINERGIE -Standard residential/offices 1998 MINERGIE Association 1998 MINERGIE-Modules walls, roofs 2002 MINERGIE-Standard for all building types 2002 MINERGIE-P 2003 Quality assurance system 2006 MINERGIE-ECO 2007 MINERGIE-Modules building equipment, Lighting 2009 Renewed standards and requirements 2011 MINERGIE-A, MINERGIE-ECO retrofit Stadt Zurich Chennai, , page 22

23 MINERGIE Swiss voluntary sustainable building standard Registered trade mark, internationally protected Different building types, new & retrofit of buildings constructed in the year 2000 or earlier Non-profit association, anchored in regulatory & corporate world, founded 1998 Requirements regarding energy demand, comfort and economy Performance based, energy & comfort a must Comparatively simple in implementation and low cost in certification Chennai, , page 23

24 MINERGIE Building Standards -80% + Minergie A (Near Zero Energy) Stadt Zurich Chennai, , page 24

25 More Quality of Life, less Environmental Impact MINERGIE ECO Comfort Health Light Quality of Life High thermal comfort Summer heat protection Systematic air change Best daylighting conditions Good noise protection Low indoor air pollution Noise Indoor Air Environmental Impact Energy efficiency 25 to 50% less energy consumption Fossile energy consumption at least 50% below average building standard. Building materials No scarce resources Low environmetal impact of materials and production Simple ways of deconstruction and high grade of recycling Resources Production Deconstruction Stadt Zurich Chennai, , page 25

26 NE-001-ECO Federal Agency for Statistics Neuchâtel Architects: Bauart, Bern Stadt Zurich Chennai, , page 26

27 MINERGIE : World s highest market penetration Number of MINERGIE-Buildings MINERGIE: 25% of new buildings in CH Average building size 1000m 2 of heated floor area Chennai, , page 27

28 MINERGIE Brand Strategy Chennai, , page 28

29 6. SWISS CITIES: FRONT-RUNNERS FOR SUSTAINABLE BUILDING Stadt Zürich Chennai, , page 29

30 Program 7-Mile Steps Guidance for municipalities to go beyond regulation for public buildings Stadt Zurich Chennai, , page 30

31 Program 7-Mile Steps Basic level 1. MINERGIE-ECO-Standard for new buildings (ECO Mile step # 5) 2. MINERGIE-modernisation for refurbished buildings (1 st priority) 4. Renewable Energy New buildings 40% 5. Choose environmentally sound and healthy materials 6. Environmental Sustainability is criteria in competitions Watt/Top level MINERGIE-P-ECO MINERGIE for new buildings or MINERGIE-P 100% of heat demand plus embodied energy energy efficient transportation Stadt Zurich Chennai, , page 31

32 1. New Buildings City Hospital Triemli New Patients building Stadt Stadt Zurich Zurich Amt für Hochbauten Chennai, , page Watt-Society

33 2000-Watt City Hospital Triemli Greenhouse gas emissions Tons per year New patients building Renewable energy supply New useage high rise building Replacement of employee appartments Renewal of Maternité (Birth Center) Refurbishment Electricity from renewable energy sources 2000 Watt path Effektiv Stadt Zurich Chennai, , page 33

34 2. Existing building stock: largest saving potential kwh/m 2 a Specific Energy consumption before MINERGIE - Refurbishment Heated floor area (ex. Switzerland) Year of construction 100 Prognosis 30 Y. Newbuild 130% CH code 2009 MINERGIE picture: Stadt Zurich Chennai, , page 34

35 Replacement housing project Werdwies Non-profit housing Architects: Adrian Streich Stadt Stadt Zurich Zurich Amt für Hochbauten Chennai, , page 35

36 Transition period: Social workers counsel 650 tenants Stadt Zürich Chennai, , page 36

37 Comprehensive renewal of residential complex Residential complex Heuried Architects: Adrian Streich Stadt Stadt Zurich Zurich Amt für Hochbauten Chennai, , page 37

38 Administration centre "Werd" Refurbishment Architects: Burkhalter Sumi City Stadt of Zürich Zurich Center Amt for für Sustainable HochbautenConstruction Chennai, , page 38

39 Multifunctional ceiling appliances : Unit for 4 functions Concrete Concrete Radiation Room heating via radiation Cooling with cold water Concrete Concrete Thermal activation of the concrete ceiling Sound absorption surface Stadt Zürich Chennai, , page 39

40 Office in administration centre Werd Ceiling appliances and floor lamps City Stadt of Zürich Zurich Center Amt for für Sustainable HochbautenConstruction Chennai, , page 40

41 3. Efficient use of electrical power MINERGIE floor lamps: City of Zurich launches competition in the market 18 winner lamps in the competition Stadt Zürich Chennai, , page 41

42 5. Health and Environmental Impact Residential compex Brunnenhof Architects: Gigon Guyer Stadt Zürich Chennai, , page 42

43 No chemical pollutants in building construction! Stadt Zurich Chennai, , page 43

44 91 % recycling rate in deconstruction Recycling concrete for all new buldings Stadt Zürich Green sia Umsicht Building Congress Chennai, Wohnsiedlung , Werdwies page 44

45 6. Sustainability criteria in architectural competitions and study assignments Extension Kunsthaus Zurich Archiects: David Chipperfield Stadt Zurich Chennai, , page Watt Society design

46 Sustainability in architectural competitions City of Zurich Specific energy consumption [kwh/m 2 ] MINERGIE-P MINERGIE architectural competitions for 2000 appartments Stadt Zurich Chennai, , page 46

47 Conclusion In Switzerland during the last 30 years Push- (Regulation) and Pull-Strategies (Minergie, 2000-Watt-Society) have been successfully combined to improve energy-efficiency and sustainability of buildings. The 2000-Watt-Society has become a major driving force in Swiss Energy Policy. The Vote in the City of Zurich had a signal effect. MINERGIE has suceeded to create a market for highperformance buildings. Several public investors are front-runners for energyefficient and sustainable buildung in Switzerland. City of Zurich Chennai, , page 47

48 Your Questions? Further Information: Stadt Zurich Chennai, , page 48

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