Energy Efficiency in Buildings in the EU and in Japan13 December 2013

Benefits of Energy Efficiency in Buildings

François-Xavier LienhartSaint-Gobain MAG-Isover

When we think about Energy, we think about…

Production

2

…

But these various solutions have drawbacks

CO2 emissions

3

Safety risks

Geopolitical risks (Strategic routes…)

Environmental problems

Cost

Sensitivity of Japanese economy to outside elements(shale gas in the US…)

When we think about Energy, we also think about…

Distribution

StorageSmall quantity

4

Future grid connections with Korea and China?

Big quantity

?

My topic is not about all of this, it is about Energy Consumption

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The fewer the issues are

The more we reduce energy needs,

Energy Efficiency is the key

Which sectors are energy-consuming in Japan ?

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Energy Efficiency = important potential in the Building sector

Buildings = +30% of total energy consumption in most industrialized countries

Develop sustainable energy through reduction ofbuildings’ needs

Thermal bridges= 5%

Floors = 7%

Windows= 13%

Renewed air= 20%

Roof= 30%

Walls= 25%

How to improve Energy Efficiency in Buildings?

-

High performance insulation(floor, walls, roof, windows & doors)

--

)

Green Design(Low impact design)

Efficient Ventilation

Low Energy consumption house=

How to Develop Greener Buildings?

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Low energy needs

Renewables

New Technologies

Zero Energy House

= =0 +

=

It is possible: the French example

New buildings: Maximum primary energy consumption < 50 kWh/m2/yearBy 2020, primary energy consumption < 40 kWh/m2/year and energy positive balance

Existing buildings: Long term thermal renovation programme: 400 000 dwellings/year Thermal Regulation and Label consumption <. 80 kWhEP/m2/yearEnergy Performance Certificate mandatory for all buildings since 2011Mandatory White Certificates for energy savings by energy distributors

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30 millions dwellings = 40% total final energy consumption 25% GHG emissions

Financing programme for renovation : 0% interest rate loan and tax creditConditionned on Qualification of installers

French Energy Performance Certificate

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French Energy Performance Certificate

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Real estate agency ads Housing ads

November 2010

Implementation: French Thermal Regulation Agenda

2008 2009 2010 2011 2012 2014 2016 2020

RT 2012*50

kWhpe/m2/yr

RT 2020*

Grenelle Law

s

Loans (Eco-PTZ),Tax credit

DPE =EnergyPerformance

CertificateMandatory for all buildings

NEW Buildings

Existing Buildings

RT existing buildings*and

BBC Label =80 kWhpe/m2/y

0 InterestLoan

(Eco-PTZ)

0 InterestLoan

(Eco-PTZ )

New label Positive Energy

Bldg40 kWhpe/m2/y

*RT= Thermal Regulation

Recast RT existingbuildings

New law for energytransition and

renovation long termprogramme

19%37%

Insulation Standards

Standard annual heating

and cooling MJ/m2/yr

Source: MLIT

CO2Emission

Existing Building Stock 2009Source: MLIT

New BuildingsSource: MAG

39% 5% -

47%30% 20% --

MJ/m2/yr

< 54

1980 ReferenceMJ/m2/yr

1030

1992 ReferenceMJ/m2/yr

800

Passive House1999 StandardMJ/m2/yr

460

NONEMJ/m2/yr

> 1030

*Zone IV: Tokyo, Nagoya, Kyoto, Osaka, Fukuoka

?15 kWh/m2/yr127 kWh/m2/yr222 kWh/m2/yr286 kWh/m2/yr

20%

*

76% of the existingstock is not or poorly

insulated

30% Only 30% of newhouses are built

according to 99 standards

** Building stock: 49 millions of households in 2011

Primary energy

**

3% 50%50% of new housesin Japan are builtaccording to1999 standard*Zones II to V

76% of the existing building stock is not or poorly insulated

2011

Isover

FR RT 2012MJ/m2/yr

18050kWh/m2/yr

Toward EU Passive House in 2020

In Japan, Energy Efficiency also a focusbut buildings still lag behind for insulation performances

Japan regulation

Energy Efficient Houses in Japan are not a dream, they already exist !

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Multi Comfort House Machiya in Kyoto

New houses Traditional-style houses

Reducing the energy needs is good…

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… At individual level

- Decrease households’ energy bill

- Increase durability of buildings and asset value

- Decrease heating and cooling demand for a better comfort

- Increase air quality and healthy environment benefits

Reducing the energy needs is good…

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… At country level

- Decrease trade deficit

- Decrease geopolitical risks

- Decrease CO2 emissions

- Keep and create employments (+ minimum 60 000 stable and sustainable jobs)

Reducing the energy needs is good…

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… For the Japanese economy

Low energy needs in buildings

=

Cheaper energy

Jobs in Japan

=

In particular, in the building sector • Buildings renovation cannot be exported• Building materials are produced locally

The cheapest and cleanest energy is the energywe don’t need to produce

Francois-xavier.lienhart@saint-gobain.com

THANK YOU FOR YOUR ATTENTION

Every Kw/h saved in the building sector will help Japanese Industry’s competitiveness