© OECD/IEA 2011

Improving Energy Efficiency in Buildings

International Best Practices

Yamina SAHEBYamina.saheb@iea.org

International Energy Agency

Efficient Power Generation 2011Roundtable 4: Efficient use of energy in the end-use sector Moscow, 20 September 2011

© OECD/IEA 2011

Buildings sector share of the total energy consumption

2007 Baseline 2030 Baseline 2050 BLUE Map 2050 0

2 000

4 000

6 000

8 000

10 000

12 000

14 000

16 000Other

Buildings

Transport

Industry

Mtoe

ETP 2010

© OECD/IEA 2011

Global Energy consumption per building type

1971

1973

1975

1977

1979

1981

1983

1985

1987

1989

1991

1993

1995

1997

1999

2001

2003

2005

2007

500

1 000

1 500

2 000

2 500

3 000

Non-specified/other Services

Residential

Mtoe

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Where should we start?

Based on Philibert and Pershing 2002, ETP 2010

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Residential end-uses energy consumption (IEA 28)

1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 20080

5

10

15

20

25

30

35

Space Heating Space Cooling Water Heating Cooking

Lighting Total Appliances Non-Specified

EJ

© OECD/IEA 2011

Services end-uses energy consumption (IEA 28)

1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 20080

2

4

6

8

10

12

14

16

18

20

Space Heating Space Cooling Lighting

Non-Specified Non-Building Energy use

EJ

© OECD/IEA 2011

1. Across sectors1.1 Measures for increasing investment in

energy efficiency;1.2 National energy efficiency strategies and

goals;1.3 Compliance, monitoring, enforcement and

evaluation of energy efficiency measures;1.4 Energy efficiency indicators;1.5 Monitoring and reporting progress with the

IEA energy efficiency recommendations themselves.

2. Buildings2.1 Building codes for new buildings;2.2 Passive Energy Houses and Zero Energy

Buildings;2.3 Policy packages to promote energy

efficiency in existing buildings;2.4 Building certification schemes;2.5 Energy efficiency improvements in glazed

areas.

3. Appliances3.1 Mandatory energy performance

requirements or labels;3.2 Low-power modes, including standby power,

for electronic and networked equipment;3.3 Televisions and “set-top” boxes; 3.4 Energy performance test standards and

measurement protocols.

4. Lighting4.1 Best practice lighting and the phase-out

of incandescent bulbs;4.2 Ensuring least-cost lighting in non-

residential buildings and the phase-out of inefficient fuel-based lighting.

5. Transport5.1 Fuel-efficient tyres;5.2 Mandatory fuel efficiency standards for

light-duty vehicles;5.3 Fuel economy of heavy-duty vehicles;5.4 Eco-driving.

6. Industry6.1 Collection of high quality energy

efficiency data for industry;6.2 Energy performance of electric motors;6.3 Assistance in developing energy

management capability;6.4 Policy packages to promote energy

efficiency in small and medium-sized enterprises.

7. Utilities7.1 Utility end-use energy efficiency

schemes.

IEA 25 Energy Efficiency Policy Recommendations

© OECD/IEA 2011

Building Energy Codes

Mandatory building energy codes and minimum energy performance requirements

Governments should require all new buildings, as well as buildings undergoing renovation, to be covered by energy codes and to meet minimum energy performance requirements (MEPs) that aim to minimise life-cycle costs. Energy codes and MEPs should be enforced, regularly strengthened and take a holistic approach that includes the building envelope and equipment.

Frankfurt/M Germany SophienhofFAAG/ABG Frankfurt Architect Fuessler

New BuildingsBlocks of Flats

160 dwellings14 767 m²Passive House Technology15 kwh / m² per year

Payback = 9 – 10 years Buildings stay for 50 – 100 years !

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Aiming for net zero energy consumption in buildings

Governments should support and encourage the construction of buildings with net zero energy consumption and take initiatives to make such buildings commonly available in the market when economically viable based on a life-cycle cost analysis. Policies should include:

Objectives for market share of net zero energy consumption buildings in all new construction by 2020.

The use of net zero energy consumption buildings as a reference for mandatory MEPs in future updates of building codes.

© OECD/IEA 2011

Improving the energy efficiency of existing buildings

Governments should implement a package of policies to improve the energy efficiency of existing buildings with emphasis on significant improvements to building envelopes and systems during renovations. Policies should include:

An ambitious timeline and renovation rate for cost-effective reduction of the energy consumption in existing buildings.

MEPs for the building as a whole, including key building-envelope components and energy-using systems, to be met during renovations.

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Building energy labels and certificates

Governments should require building energy performance labels or certificates that provide information to owners, buyers and renters.

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Package of policies for windowsand HVAC products

Energy performance of building components and systemsGovernments should establish policies to improve the energy efficiency performance of critical building components, such as windows, and heating, ventilating and cooling systems, in order to improve the overall energy performance of new and existing buildings.

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Do it right in the first placeAssess optimal building size and use

Consider building orientation, shape, thermal masse

Specify high performance envelope

Maximize passive HVAC and daylight

Install efficient equipment

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Policy implementation has improved….

2009 2011

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

• All countries have developed and implemented new energy efficiency policies

• Energy savings opportunities still exist.

© OECD/IEA 2011

The IEA Policy Pathways

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Current IEA work program on buildingsGlobal buildings energy policies trends Worldwide mapping of building

policiesEstimation of energy savings potential

per countryPolicies and Technologies for low

energy buildings

© OECD/IEA 2011

Key messages

Work together (industry, policy-makers, academia, NGOs)

Share proven practices (developing countries, emerging economies, developed countries)

But don’t copy/paste Make buildings energy efficiency part of the

solutions to local/national priorities Consider local climate, material & behaviour

© OECD/IEA 2011

Thank you for your attention

Yamina.saheb@iea.org