Energy efficient buildings: The Swiss experience

(1)

Energy efficient buildings:

The Swiss experience

Green Building Congress

Chennai, October 7

th

_{, 2010}

Heinrich Gugerli, Head Sustainable Building Group

[email protected]

(2)

Green Building Congress Chennai, 07.10.2010, page 2 Stadt Zurich Amt für Hochbauten

City of Zurich

Building Department

(3)

Building materials

Energy

Soils/Landscapes

Infrastructure

Buildings

Financing / Investment

Maintenance Costs

Energy efficient buildings are a key to

sustainable development

Society

Architecture

Land Use

Mobility

Standard of Living/ Health

Future

Generations

Economy

Environment

Society

Cultural

Heritage

(4)

Green Building Congress Chennai, 07.10.2010, page 4

Content

1. Swiss Energy Policy: 30 years experience

2. 2000-Watt Society: From Science to Politics

3. MINERGIE: Swiss Low-Energy Standard

4. Swiss Cities: Front-runners for Sustainable Building

Stadt Zürich Amt für Hochbauten

(5)

1. SWISS ENERGY POLICY:

30 YEARS EXPERIENCE

(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 Amt für Hochbauten

(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

(8)

Driving Forces towards energy efficiency in

buildings

Regulation,

Enforcement

Federal Programs

Codes

MINERGIE

Energy Cities

Industry

2000-Watt-Society

Public investors

Investor

Research

Education

(9)

2. 2000-WATT SOCIETY:

FROM SCIENCE TO POLITICS

(10)

Green Building Congress Chennai, 07.10.2010, page 10 Stadt Zurich

Amt für Hochbauten

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 2006 – 2010

„Zurich on the way to the 2000-Watt Society“

2008

2000-Watt Society in Zurich City Constitution

Popular vote on November 30

th

2008: 76% Yes!

2010

Competence Center

(11)

Green Building Congress Chennai, 07.10.2010, page 11 Stadt Zürich

(12)

(13)

W

att per

person

India

China

World

Switzerland Western Europe USA

Industrialised countries: 6000 - 12000 Watt.

A small part of the population consumes most of

the energy resources.

Fair Redistribution of Energy Resources:

The 2000-Watt-Society

500 2000

Goal for 2050:

50 % Reduction

of Fossil Energy

by 2050

1to CO2

1960

(14)

2000-W-Society: Contribution of Buildings

Building and

construction

Transpor-tation

e.g., Industry

Heating / Cooling

Warm water

Light and appliances

Offices

Schools

Home

Building

Operation

(15)

Relevance of Construction and

Transportation

SIA 2040

Guideline value

(residential)

Construction

Operation

Transportation

New

Retrofit

Primary energy Total

New

Retrofit

Primary energy

Non renewable

New

Retrofit

(16)

(17)

S-chanf

Konstanz, Singen,

Überlingen, Radolfszell

Friedrichshafen,

Schaffhausen, Feldkirch

(18)

City of Zurich: Strategy energy supply

District heating:

Biomass Power Plant

(19)

City of Zurich: Transportation system for the

2000-Watt-Society

(20)

City of Zurich: European energy award gold

for best practice energy policy

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Spatial planning

Municipal buildings, facilities

Supply, disposal

Mobility

Internal organisation

Communication, cooperation

Total

eea gold

min 75 %

(21)

3. MINERGIE

®

: SWISS

LOW-ENERGY STANDARD

(22)

Amt für Hochbauten

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

(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

(24)

MINERGIE

®

_{Building Standards}

+ ‘Minergie A’

(Near Zero Energy)

-80%

(25)

More Quality of Life, less Environmental

Impact

MINERGIE

ECO

Comfort

• High thermal comfort

• Summer heat protection

• Systematic air change

Health

• Best daylighting conditions

• Good noise protection

• Low indoor air pollution

Light

Noise

Indoor Air

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

Quality

of Life

Environmental

Impact

(26)

15.12.2010

NE-001-ECO

Federal Agency for Statistics

Neuchâtel

Architects: Bauart, Bern

(27)

MINERGIE

®

: World’s highest market

penetration

99

00

01

02

03

04

05

06

07

08

09

0 2‘000

4‘000

6‘000

8‘000

10‘000

12‘000

14‘000

16‘000

Number of MINERGIE-Buildings

Average building size

1000m

2 _{of heated floor area}

(28)

(29)

6. SWISS CITIES:

FRONT-RUNNERS FOR

SUSTAINABLE BUILDING

(30)

Program 7-Mile Steps

Guidance for municipalities to

go beyond regulation for public

buildings

(31)

Program 7-Mile Steps

Basic level

2000 Watt/Top level

1. MINERGIE-ECO-Standard

for new buildings

(ECO Mile step # 5)

Æ

MINERGIE-P-ECO

2. MINERGIE-modernisation

for refurbished buildings

(1

st

_priority)

Æ

MINERGIE for new buildings

or MINERGIE-P

4. Renewable Energy

New buildings 40%

Æ

100% of heat demand

5. Choose environmentally sound

and healthy materials

Æ

plus embodied energy

6. Environmental Sustainability is

criteria in competitions.

(32)

1.

New Buildings

2000 Watt-Society

City Hospital Triemli

New Patients building

(33)

Amt für Hochbauten

2000-Watt City Hospital Triemli

Greenhouse gas emissions

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

(34)

Amt für Hochbauten

2.

Existing building stock:

largest saving potential

Heated floor area (ex. Switzerland)

Specific Energy

consumption

1991

-97

1986

-90

Y

ear of construction

1920 - 1975

1976

-80

before 1920

kWh/m

2 _a

100

200

150 MINERGIE - Refurbishment

MINERGIE

50

0 Prognosis

30 Y. Newbuild

1980

-85

CH code 2009

130%

100

0 picture: www.minergie.ch

(35)

Amt für Hochbauten

Replacement housing project „Werdwies“

Non-profit housing

(36)

Amt für Hochbauten

Transition period:

Social workers counsel 650 tenants

(37)

Amt für Hochbauten

Comprehensive renewal of residential complex

Residential complex Heuried

Architects: Adrian Streich

(38)

Green Building Congress Chennai, 07.10.2010, page 38 City of Zürich

Center for Sustainable Construction

Administration centre "Werd"

Refurbishment

(39)

Multifunctional ceiling appliances :

Unit for 4 functions

Room heating via

radiation

Thermal activation

of the concrete ceiling

Cooling with cold water

Sound absorption surface

Concrete

Radiation

(40)

Green Building Congress Chennai, 07.10.2010, page 40 City of Zürich

Center for Sustainable Construction

Office in administration centre ”Werd”

Ceiling appliances and floor lamps

(41)

18 “winner“ lamps in the competition www.topten.ch

3.

Efficient use of electrical power

MINERGIE

®

_floor

lamps: City of Zurich

launches competition

in the market

(42)

Amt für Hochbauten

5.

Health and Environmental Impact

Stadt Zürich Amt für Hochbauten Stadt Zürich Amt für Hochbauten

Residential compex Brunnenhof

Architects: Gigon Guyer

(43)

No chemical pollutants in building

construction!

(44)

Amt für Hochbauten

91 % recycling rate in deconstruction

Recycling concrete for all new buldings

sia Umsicht

(45)

Amt für Hochbauten

6.

Sustainability criteria in architectural

competitions and study assignments

2000-Watt Society

design

Extension Kunsthaus Zurich

Archiects: David Chipperfield

(46)

Amt für Hochbauten

Sustainability in architectural competitions

City of Zurich 1998 –2006

1998

2006

Specific energy consumption

[kWh/m

2

]

70

60

50

40

30

20

10

0 MINERGIE-P

19 architectural competitions

for 2000 appartments

MINERGIE

(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}

high-performance buildings.

–

Several public investors are front-runners for

energy-efficient and sustainable buildung in Switzerland.

City of Zurich Amt für Hochbauten

(48)

Your Questions?

Further Information:

www.stadt-zuerich.ch/2000-watt-society

www.stadt-zuerich.ch/nachhaltiges-bauen

www.stadt-zuerich.ch/standderdinge

www.2000watt.ch

www.minergie.ch