(This is an updated version of the slides used during the 11th webinar in the Odyssee-Mure on Energy Efficiency Academy at 08 Dec 2020. This version addresses pending questions with some more details and references.) What has been the overall trend in final energy consumption of buildings in the EU since 2010? What are the main drivers of the energy consumption variation, and in particular energy savings, for residential and service buildings? These are the key questions answered during this (11th) webinar in the Odyssee-Mure on Energy Efficiency Academy. Highlights from their research: ➢The energy consumption of buildings has steadily decreased since 2010 despite GDP growth. ➢There are large disparities in building performances across countries. ➢Since 2015, the rate of household energy efficiency improvements has dropped by 50% (compared to 2000-2014). ➢Energy efficiency of large electrical appliances, which has largely improved in the past, does not counterbalance anymore the rapid growth of the consumption of small appliances.

1. Energy efficiency trends in buildings in
the EU
December 8th, 2020
Marie Rousselot, Bruno Lapillonne, Enerdata
with Frédéric Pinto da Rocha, Enerdata
Odyssee-Mure webinar series on Energy Efficiency
organised by Leonardo ENERGY

2. About
▪ This webinar is organized in the framework of the ODYSSEE MURE project,
that is supported by the H2020 programme of the European Commission.
The project is coordinated by ADEME, with the support of Enerdata and
Fraunhofer-ISI. www.odyssee-mure.eu
▪ The webinar relies on data and energy efficiency indicators prepared in the
framework of the project and disseminated in a database, called
ODYSSEE, and in 5 data tools.
▪ ODYSSEE covers 31 countries*. It is updated up to 2018 from national
sources and completed with early estimates for 2019**.
▪ The consumption data correspond to the final energy or delivered energy.
2
*28 EU Member States (UK included)+ Norway, Serbia and Switzerland
** see methodology at https://www.odyssee-mure.eu/publications/other/early-
estimates-methodology.html

3. Outline
▪ Introduction
▪ Energy consumption trends
▪ Energy efficiency trends
▪ Conclusion
3Energy efficiency trends in buildings in the EU – December 8th, 2020

4. Introduction
Energy efficiency trends in buildings in the EU – December 8th, 2020

5. Introduction
• Why is the building sector so relevant?
o In 2018, buildings account for:
- 43% of the final energy consumption and 60% of the
electricity consumption in the EU-28
- about 40% of the EU’s CO2 emissions related to energy
consumption
o The European Commission states that “currently, ~75% of the
building stock is energy inefficient yet almost 85-95% of today’s
buildings will still be in use in 2050.”*
➔ There is a specific need of ambitious policies and measures (PAMs)
focusing on buildings to:
➔ meet the targets set out for 2030
➔ making Europe climate neutral by 2050.
5Energy efficiency trends in buildings in the EU – December 8th, 2020
* https://ec.europa.eu/energy/topics/energy-efficiency/energy-efficient-buildings/renovation-wave_en

6. Introduction
Policies and measures (PAMs) designed at the
European level (EPDB, renovation wave, …)
are declined at the country level (for ex. long
term renovation strategies, NECPs…).
The monitoring of these PAMs using
appropriate indicators is an essential success
factor.
6Energy efficiency trends in buildings in the EU – December 8th, 2020
Such indicators help monitoring the impacts of PAMS at the EU or national
level. They may highlight the need to review the way PAMs have been
designed or their level of ambition.
In this presentation, we will present such indicators (Odyssee database)
showing trends of energy consumption and energy efficiency. Decomposition
analysis will be presented to explore the observed variations of energy
consumption in buildings over the last two decades.

7. Energy consumption
trends
Energy efficiency trends in buildings in the EU – December 8th, 2020

8. Energy consumption : overview
8Energy efficiency trends in buildings in the EU – December 8th, 2020
In most European countries, buildings absorb the largest share of
consumption sector (43% at EU level).
Their consumption is stable since 2014 while GDP has risen by
~1.5%/year (2014-2019). This follows a decline of consumption after the
financial crisis (-1.5 %/year from 2008-2014).
Two thirds of the buildings consumption are for residential buildings.
At the EU level, the share of services has grown from 29% in 2000 to 33%
in 2008 and is rather stable since then.
0
5
10
15
20
0
100
200
300
400
500
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
GEUR2010
Mtoe
Total consumption of buildings and GDP
Services
Residential
GDP at constant
prices
2019 : early estimates

9. Energy consumption
trends in the residential
sector
Energy efficiency trends in EU – June 2020 9

10. Energy consumption trends in the residential
sector
10
Energy efficiency trends in buildings in the EU – December 8th, 2020
In 2018, the average energy consumption in the EU is 1.3 toe/dwelling.
There are large disparities among countries, even after adjustment to the
same climate, ranging from 0.9 toe/dw in Portugal to 2.5 times more in
Luxembourg (2.5 toe/dw).
This unit consumption is decreasing in all countries since 2000 (-1.1%/year
on the EU scale), except in Bulgaria, Poland, Hungary and Italy.
0
1
2
3
4
Portugal
Bulgaria
Lithuania
Romania
Spain
Estonia
Slovakia
Sweden
Finland
Latvia
EU
UK
Netherla…
Poland
Slovenia
Germany
Greece
Austria
Denmark
Czechia
France
Ireland
Hungary
Croatia
Italy
Belgium
Luxemb…
toe/dwelling
Energy consumption per dwelling, scaled to EU average climate
2000
2018

11. Energy consumption trends in the residential
sector
11Energy efficiency trends in buildings in the EU – December 8th, 2020
Between 2000-2019, declining trends are observed for space heating, the
dominant end-use with 66% of the households consumption and cooking
(only 5% of the total) (-0,5/%year and -0.3%/year respectively).
Over the same period, growing trends are observed for appliances and
lighting (1%/year) and water heating (0.2%/year). In 2019, appliances and
lighting have overcome water heating. These end-uses now account for
15% and 14% of the households consumption, respectively.
2019 : early estimates
71% 66%
13%
14%
5%
5,1%
2%
1,6%
8%
13%
0
50
100
150
200
250
300
350
2000 2019
Mtoe
Household energy consumption by end-use in the EU
Electrical appliances
Lighting
Cooling
Cooking
Water heating
Space heating

12. Trends of electricity consumption in the
residential sector
12Energy efficiency trends in buildings in the EU – December 8th, 2020
In 2019, 87% of the electricity used for captive uses (i.e. outside thermal
uses) is for electrical appliances : since 2008, consumption of large
appliances has decreased (-1%/year), while it has progressed rapidly for
small appliances (3%/year).
Electricity consumption for lighting is declining (-2%/year since 2008). It
now represents 11% of the households captive electricity consumption.
Cooling still represents a low share (2%) but shows an important growth of
7%/year since 2000 (~10%/year in EU Mediterranean countries).
2019 : early estimates
* others
** TV, refrigerator, freezer,
washing machine,
dishwasher, dryer
1% 1% 2%
16% 14% 11%
54% 48%
40%
29%
37% 47%
0
10
20
30
40
50
2000 2008 2019
Households captive electricity consumption by end-use in the EU
Small electrical
appliances*
Large electrical
appliances**
Lighting
Cooling

13. Specific consumption of households for
electrical appliances
13Energy efficiency trends in buildings in the EU – December 8th, 2020
The specific consumption of large electrical appliances* has decreased
rapidly since 2008 (-1.8%/year).
The specific consumption of small appliances has increased rapidly, even if
this growth has been almost halved between 2000-2008 (4%/year) and
2008-2018 (2.5%/year).
0
500
1 000
1 500
2 000
2 500
Total Large appliances Small appliances
kWh/dwelling
Specific consumption of electrical appliances
2000
2008
2018
Large appliance: TV, refrigerator, freezer, washing machine, dishwasher, dryer
Small appliances include all others :PC, coffee machine, video etc…

14. Energy consumption
trends in services
Energy efficiency trends in EU – June 2020 14

15. 15Energy efficiency trends in buildings in the EU – December 8th, 2020
In 2019, the energy consumption in services was 20% higher than in 2000
despite a decrease after the economic crisis.
It reached a peak of 155 Mtoe in 2008 after a rapid increase (2.5%/year).
It decreased between 2008 and 2014 and remained almost stable
afterwards.
Similarly, electricity consumption increased rapidly until 2008 (3.2%/an). It
is almost stable since then.
-0,5
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
4,0
2000-2008 2008-2019 2000-2019
%/year
Trends in energy consumption and value added in services
Value added
Total consumption
(climate corrected)
Electricity
consumption (climate
corrected)
Energy consumption trends in services
2019 : early estimates

16. Energy consumption trends in services
16Energy efficiency trends in buildings in the EU – December 8th, 2020
Electricity represents almost half of the total energy consumption of
services.
Offices and wholesale and trade sector consume around 2/3 of electricity
in services* at EU level.
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Total electricity consumption by branch (2018)
Education
Health
Hotels, restaurants
Wholesale
Offices
*Services include private and public buildings (offices, shops, schools, hospitals) as well as public lighting.

17. Energy consumption trends in services
17Energy efficiency trends in buildings in the EU – December 8th, 2020
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Total energy consumption by end-use (2018)
Lighting
Air cooling
Cooking
Water heating
Space heating (climatic
corrected)
Space heating represents the largest part of the energy consumption in
6 countries out of 7 for which data are available (between 47% in Spain
and 68% in Sweden)
In Portugal, the largest energy consumption is for lighting (45%).

18. Energy efficiency trends
Energy efficiency trends in buildings in the EU – December 8th, 2020

19. Specific energy consumption for
households space heating
19Energy efficiency trends in buildings in the EU – December 8th, 2020
0
50
100
150
200
250
300
350
Malta
Portugal*
Cyprus
Spain
Bulgaria
Greece
Netherlands
Denmark
Sweden
UK*
Ireland
EU28
Italy
France
Lithuania
Germany
Denmark
Finland
Slovenia
Austria
Croatia
Romania
Estonia
Poland
Hungary
CzechRep.
Luxembou…
Latvia
kWh/m²
Households space heating consumption per m² (climate corrected)*
2000
2018
The specific consumption of households for heating has decreased in
almost all countries since 2000 (-1.8%/year on average in the EU).
The reduction was above 3%/year in 3 countries (Latvia, Romania and
Portugal) and between 2 and 3%/year in 6 others (Ireland, UK,
Nethrlands, Sweden, Slovakia and Germany)
• Climate corrections see methodology at https://www.odyssee-mure.eu/faq/result/1/
• 2002 for UK, 2003 for Portugal; no data before 2008 for Luxembourg and 2016 for Malta. No data on m2 available for Belgium

20. 20
Energy efficiency trends in buildings in the EU – December 8th, 2020
Energy efficiency trends: large households
appliances
55
60
65
70
75
80
85
90
95
100
1990=100
Specific energy consumption of large appliances (EU average)
Refrigerators
Freezers
Washing machines
Dishwashers
Dryers
▪ The specific consumption of large appliances (measured in kWh per
appliance) has decreased steadily since 1990 by the labelling and eco-
design regulations.
▪ Efficiency gains are above 40% (i.e. 2%/year) for cold appliances
(refrigerators and freezers), washing machines and dish washers; for
dryers, gains are lower, around 35%.
Source ODYSSEE, based on national data

21. 21
How is measured energy efficiency
progress in ODYSSEE?
• Various energy efficiency indicators of specific consumption measured
in physical unit are calculated for buildings:
• by end–use for households
• by sub-sector for services.
• For households, we obtain different trends for the EU: 2%/year for
refrigerators, 1.8%/year for heating, 0.5%/year for water heating
etc….
• The question is how to measure the overall energy efficiency progress
at sector level?
• This is the objective of the energy efficiency index, called “ODEX”, that
is calculated separately for households and services in ODYSSEE.
Energy efficiency trends in buildings in the EU – December 8th, 2020

22. How is calculated ODEX?
• ODEX is calculated:
o First, by expressing trends in specific energy consumption by
end-use (or sub-sector), as an index of variation ;
o Then by calculating an average index for the sector weighted by
the share of each end-use (or sub-sector) in the sector’s energy
consumption.
• ODEX is presently calculated on the basis of 11 end-uses* or
appliances for households and 6 branches in services.
• As for each end-use, index of variation are used, specific
consumption can be expressed in different physical units so as to be
as close as possible to energy efficiency (e.g. for household: toe/m2
for heating, toe/household for water heating and cooking, kWh/dwelling
for lighting, kWh/appliance for appliances and cooling.
22
*Heating (separation new/existing dwellings), water heating, cooking, cooling, lighting, refrigerator,
freezer, washing machine, dishwasher, dryer, TV.
For more information on ODEX: https://www.odyssee-mure.eu/publications/archives/odex-indicators-
database-definition.html
Energy efficiency trends in buildings in the EU – December 8th, 2020

23. Energy efficiency trends for households
▪ ODEX equal 71 in 2019 ➔ households energy efficiency has improved by
29% at EU level between 2000 and 2019 (or 1.8%/year).
▪ However, there has been a significant slowdown since 2014, with progress
twice lower, mainly because of space heating, the largest end-use, and
also for water heating and cooking, whereas for large appliances and
lighting there is an intensification .
• Only main end-uses shown
23Source: ODYSSEE
40
50
60
70
80
90
100
Energy efficiency trends for households at EU level based on ODEX
Total
Heating
Water heating
Cooking
Large electrical
appliances
Lighting
Energy efficiency trends in buildings in the EU – December 8th, 2020
2019 : early estimates

24. What is happening since 2014? (1/2)
24
Energy efficiency trends in buildings in the EU – December 8th, 2020
For space heating, the reduction of the unit consumption per m2 has
significantly slowed down since 2014 in most of the largest EU countries,
especially in Germany, France, UK and The Netherlands.
Several factors may explain this trend:
• Less new construction, that have very high energy efficiency performance:
the rate of construction has decreased by 35% since the financial crisis and
only represents every year 0.8% of the existing stock of dwellings (i.e. only
8% of new stock after 10 years);
• Less renovation although it is difficult to have consolidated data.
• Slower diffusion of efficient heating mode (condensing boiler, heat pumps)**.
-4,0%
-3,0%
-2,0%
-1,0%
0,0%
1,0%
2000-2014
2014-2018
Unit consumption per m2 for space heating for largest consumers*
,* Countries representing 80% of the EU heating consumption of households (50% for the 4 largest).
** Penetration of efficient heating modes at https://www.indicators.odyssee-mure.eu/market-diffusion.html

25. What is happening since 2014? (2/2)
25Energy efficiency trends in buildings in the EU – December 8th, 2020
▪ For water heating, the unit consumption reduction has significantly
slowed down in 3 large countries (France, Italy, Spain) and has even
reversed (i.e. increased) in 3 countries (Austria, Belgium, Romania).
▪ For cooking the rate of improvement has been divided by 3 since
2014, with an increase in re unit consumption in Germany, Italy,
Poland and Czech Rep.
▪ Are these changes linked to behaviors? We are lacking information to
monitor such trends

26. ▪ Since 2000, buildings have registered larger gains than transport or
industry.
▪ Energy efficiency improvements in services are mainly significant since
2014 (1.3%/year for services), and are even faster than for households
(1.1 %/year for since 2014)
▪ Such trends since 2014 can be compared with industry (0.9%/year) and
transport (0.4%/year).
Energy efficiency in buildings compared
to other sectors
70
75
80
85
90
95
100
Energy efficiency improvements for final consumers (EU) based on ODEX
Industry
Transport
Households
Services
Total
Energy efficiency trends in buildings in the EU – December 8th, 2020
2019 : early estimates

27. 27
▪ Annual additional energy savings are then calculated from the annual
variation of ODEX indicator.*
▪ Because of the slowing pace of energy efficiency improvement, the
annual additional savings have been decreasing by around 30% since
2014: from an average volume of 7.4 Mtoe/year over 2000-2013 to 5.3
Mtoe/year since 2014.
Decrease of energy savings in buildings since 2014
Average annual additional savings by sector (Mtoe)
0,0
1,0
2,0
3,0
4,0
5,0
6,0
7,0
8,0
2000-2013 2014-2019
Services
Households
Energy efficiency trends in buildings in the EU – December 8th, 2020
*ODEX is the ratio between the energy consumption and a fictive consumption that would have happened
without energy savings (ES): ODEX = E/(E+ES)*100 and ES = E x ((100/EEDEX)-1

28. In buildings, the cumulated annual energy savings since 2000 reached 130
Mtoe in 2019, which represents the equivalent of 29% of final energy
consumption in 2019. Without these savings the energy consumption of
buildings would have been 29% higher.
Households, the sector with the highest number of regulations and financial
measures, is over represented, with a share of total savings (41%) much higher
than its share in consumption (28%).
28
Energy savings vs. consumption
Energy efficiency trends in buildings in the EU – December 8th, 2020
2019 : early estimates
0
50
100
150
200
250
300
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
Mtoe
Cumulated energy savings
Industry Transport Households Services
Industry
28%
Transport
21%
Households
41%
Services
10%
% of energy savings (2019)
Industry
27%
Transport
31%
Households
28%
Services
14%
% of energy consumption (2019)

29. Conclusion
Energy efficiency trends in buildings in the EU – December 8th, 2020

30. 30
Energy efficiency trends in buildings in the EU – December 8th, 2020
Buildings’ consumption variation 2000-2019
• For households, the consumption decreased by 15 Mtoe: the increase in the
dwelling stock (more dwellings) and lifestyles (more appliances per
dwelling, larger homes) contributed to raise the consumption by 87 Mtoe.
Energy savings offset more than this increase by reducing consumption by
105 Mtoe.
Source: ODYSSEE Decomposition tool: https://www.indicators.odyssee-mure.eu/decomposition.html
2019 : early estimates
• For services, the consumption increased by 13.6 Mtoe: the activity
contributed to raise the consumption by 48 Mtoe. Energy savings only
decreased consumption by 25 Mtoe, and productivity by 26 Mtoe.
-110
-90
-70
-50
-30
-10
10
30
50
2000-2019
Mtoe
Drivers of energy consumption for households
(EU)
Consumption variation Climate
More dwellings More appliances per dwelling
Larger homes Energy savings
Other
-30
-20
-10
0
10
20
30
40
50
60
2000-2019
Mtoe
Drivers of energy consumption in services
(EU)
Consumption variation Climate
Activity Energy savings
Productivity Other

31. 31
Energy efficiency trends in buildings in the EU – December 8th, 2020
Buildings’ consumption variation 2014-2019
Source: ODYSSEE Decomposition tool: https://www.indicators.odyssee-mure.eu/decomposition.html
2019 : early estimates
• Since 2014, the consumption of households decreased by 28 Mtoe. The
increase in the dwelling stock and lifestyles contributed to raise the
consumption by 15 Mtoe. Energy savings offset more than this increase by
reducing consumption by 23 Mtoe. The warmer climate in 2019 reduced
consumption by 17 Mtoe .
• For services, the activity contributed to raise the consumption by 18 Mtoe.
Energy savings and productivity gains offset this increase by reducing
consumption by 24 Mtoe.
-20
-10
0
10
20
2014-2019Mtoe
Drivers of energy consumption in services
(EU)
Consumption variation Climate
Activity Energy savings
Productivity Other
-30
-25
-20
-15
-10
-5
0
5
10
2014-2019
Mtoe
Drivers of energy consumption for households (EU)
Consumption variation Climate
More dwellings More appliances per dwelling
Larger homes Energy savings
Other

32. 32Energy efficiency trends in buildings in the EU – December 8th, 2020
Conclusion : Key messages
• The energy consumption of buildings has steadily decreased
since 2010 despite GDP growth.
• Household energy efficiency improvements have been twice
slower since 2014 than before slowing down.
• This is mainly explained by thermal uses and in particular space
heating, due to a combination of factors (lower new
construction, and renovation, behaviour…), that are difficult to
grasp due to a lack of information.
• The energy efficiency of large electrical appliances continues to
improve rapidly; however this effect does not counterbalance
anymore the rapid growth of the consumption of small
appliances.

33. www.enerdata.net
Thank you for your
attention !
Contact:
About Enerdata:
Enerdata is an energy
intelligence and consulting
company established in 1991.
Our experts will help you tackle
key energy and climate issues
and make sound strategic and
business decisions.
We provide research, solutions,
consulting and training to key
energy players worldwide.
Bruno Lapillonne,
Scientific director
bruno.lapillonne@enerdata.net
Marie Rousselot,
Project Manager
Marie.rousselot@enerdata.net
33Energy efficiency trends in EU – June 2020