Energy Efficiency in Buildings in the EU and in Japan 13 December 2013

Transcription

1 Energy Efficiency in Buildings in the EU and in Japan 13 December 2013 Benefits of Energy Efficiency in Buildings François-Xavier Lienhart Saint-Gobain MAG-Isover

2 When we think about Energy, we think about Production 2

3 But these various solutions have drawbacks CO2 emissions Safety risks Geopolitical risks (Strategic routes ) Environmental problems Cost Sensitivity of Japanese economy to outside elements (shale gas in the US ) 3

4 When we think about Energy, we also think about Distribution Future grid connections with Korea and China? Storage Small quantity Big quantity? 4

5 My topic is not about all of this, it is about Energy Consumption The more we reduce energy needs, The fewer the issues are Energy Efficiency is the key 5

6 6 Which sectors are energy-consuming in Japan?

7 Energy Efficiency = important potential in the Building sector Buildings = +30% of total energy consumption in most industrialized countries Roof = 30% Renewed air = 20% Walls = 25% Windows = 13% Thermal bridges = 5% Floors = 7% Develop sustainable energy through reduction of buildings needs 7

8 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

9 How to Develop Greener Buildings? Low energy needs Renewables New Technologies = = = 9 Zero Energy House 0 +

10 It is possible: the French example 30 millions dwellings = 40% total final energy consumption 25% GHG emissions New buildings: Maximum primary energy consumption < 50 kwh/m2/year By 2020, primary energy consumption < 40 kwh/m2/year and energy positive balance Existing buildings: Long term thermal renovation programme: dwellings/year Thermal Regulation and Label consumption <. 80 kwhep/m2/year Energy Performance Certificate mandatory for all buildings since 2011 Mandatory White Certificates for energy savings by energy distributors 10 Financing programme for renovation : 0% interest rate loan and tax credit Conditionned on Qualification of installers

11 11 French Energy Performance Certificate

12 French Energy Performance Certificate Real estate agency ads Housing ads 12

13 Implementation: French Thermal Regulation Agenda NEW Buildings Grenelle Laws 0 Interest Loan (Eco-PTZ ) RT 2012* 50 kwhpe/m2/yr New label Positive Energy Bldg 40 kwhpe/m2/y RT 2020* RT existing buildings* and BBC Label =80 kwhpe /m2/y Loans (Eco-PTZ), Tax credit DPE =Energy Performance Certificate Mandatory for all buildings 0 Interest Loan (Eco-PTZ) Recast RT existing buildings Existing Buildings *RT= Thermal Regulation New law for energy transition and renovation long term programme November 2010

14 In Japan, Energy Efficiency also a focus but buildings still lag behind for insulation performances Japan regulation 2011 Insulation Standards* Standard annual heating and cooling MJ/m 2 /yr Source: MLIT NONE MJ/m 2 /yr > 1030 Primary energy 1980 Reference 1992 Reference MJ/m 2 /yr MJ/m 2 /yr kwh/m 2 /yr 222 kwh/m 2 /yr 1999 Standard MJ/m 2 /yr kwh/m 2 /yr Passive FR RT 2012 House MJ/m2/yr MJ/m 2 /yr 180 < 54?15 50kWh/m2/yr kwh/m 2 /yr Toward EU Passive House in 2020 CO 2 Emission 76% 76% of the of the existing building stock is stock not or is poorly not insulated or poorly insulated Existing Building Stock 2009 Source: MLIT New Buildings Source: MAGIsover ** *Zones IV: Tokyo, II to V Nagoya, Kyoto, Osaka, Fukuoka 39% 37% 19% 5% - - ** Building stock: 49 millions of households in % of new houses 30% 20% 3% 47% 50% 20% 30% Only in Japan 30% of - new are built houses are built according according to to standards

15 Energy Efficient Houses in Japan are not a dream, they already exist! New houses Traditional-style houses Multi Comfort House Machiya in Kyoto 15

16 Reducing the energy needs is good At individual level - Decrease households energy bill - Increase durability of buildings and asset value - Decrease heating and cooling demand for a better comfort 16 - Increase air quality and healthy environment benefits

17 Reducing the energy needs is good At country level - Decrease trade deficit - Decrease geopolitical risks - Decrease CO2 emissions - Keep and create employments (+ minimum stable and sustainable jobs) 17

18 Reducing the energy needs is good For the Japanese economy Low energy needs in buildings = Cheaper energy = Jobs in Japan 18 In particular, in the building sector Buildings renovation cannot be exported Building materials are produced locally

19 THANK YOU FOR YOUR ATTENTION The cheapest and cleanest energy is the energy we don t need to produce Every Kw/h saved in the building sector will help Japanese Industry s competitiveness Francois-xavier.lienhart@saint-gobain.com