Drivers and solutions
for sustainable energy efficiency
M. Schaer
Sr. Advisor to the Mgt Board
Vice President Building Technologies
House of Commons
Page 1
Martin Schaer IC BT, February 28th 2012
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rights reserved
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Congratulations UK
a good step forward, -10% compared to 1995
Benchmarking as challenge and as motivation
House of Commons
Page 2
Martin Schaer IC BT, February 28th 2012
© Siemens AG 2011. All rights reserved
IC Building Technologies
EU Energy efficiency goals “20-20-20 by 2020”
European energy efficiency 2010 partly not on track
Measurements taken: Proposal for a
Forecast by current trend of implementation
Directive of the EU Parliament & Council
(Eourece: J.M.Barroso, EU Council 4.2.2011)
on energy efficiency
Target
-20%
-10%
-20%
Increase renovation
Art. 4
Public bodies as leading example +3%/a
Energy obligation schemes
Art.6
Annual saving targets of 1.5% for energy distributors
Metering & Informative billing
Art.8
For electricity, gas, district heating/cooling
Energy Audits & Systems
+20%
Greenhouse
Gases (CO2)
Art.7 & 13
Results available for final customers
Share of
renewables
Energy
Efficiency (EE)
(Consumption)
Energy services
Artt.14
Making Performance Contracting public available
Remove of regulatory barriers Art 15
Tenant/owner conflicts, public purchasing
EE-Building-Operation and renovation as major drivers
House of Commons
Page 3
Martin Schaer IC BT, February 28th 2012
© Siemens AG 2011. All rights reserved
IC Building Technologies
Energy Efficiency and Building Performance
Existing buildings stock improvement is the key
Over years energy efficiency
has been improving
High potential in Energy Efficiency
offered by existing building stocks
Share of energy consumption
Development of energy demand
Existing buildings
before 1994 with
poor Energy Efficiency
accounts for 85% of
energy consumption
400
200
0
<1957
19581978
19791995
19962001
20022005
Share of energy demand (%)
Energy demand in kWh/m2a
80
Improvement
potential >30%.
60
40
20
0
-1976
19771994
19952004
20052010
Source: Industrie-Innitiative für effizenten Klimaschutz im
Gebäudebereich 2008 (GER)
Source: Energiereport 2007 (GER)
Increasing the overall building renovation-rate is the key leaver
House of Commons
Page 4
Martin Schaer IC BT, February 28th 2012
© Siemens AG 2011. All rights reserved
IC Building Technologies
Energy demand in kWh/m2a
Impact of renovation rate
Only an aggressive renovation rate brings expected results
250
annual renovation rate of 3%
200
Existing buildings heat demand
-23%
150
-62%
New buildings heat demand
Refurbished buildings heat demand
100
50
0
2010
2020
2030 2040
2050
EE-Building-renovation and market penetration rates as key drivers
House of Commons
Page 5
Martin Schaer IC BT, February 28th 2012
© Siemens AG 2011. All rights reserved
IC Building Technologies
Strategy for building efficiency
life cycle approach for step wise improvement up to 80%
Building envelope 40 -60 years
Wall-, roof-, ceiling-insulation, windows
Building Technologies infrastructure
Building Technologies Infrastructure
HEVAC Installations ducts and tubes
HEVAC Installation ducts and tubes
HEVAC & E Appliances HEVAC & E Appliances
HEVAC & E Appliances
building life cycle
enables economic feasible investments
1900
1920
1940
1960
House of Commons
Page 6
Martin Schaer IC BT, February 28th 2012
1980
2009
2030
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IC Building Technologies
Balanced approach to improve Building Performance
demand reduction, generation- and operation improvement
Improvement of Building
operation brings short ROI
Increasing demand
for Political and
Governmental
support
improvement of Building envelope
Addressing economic feasible steps
-20%
- 52%
- 80%
-40%
2
.
Improvement of operation and appliances
For all type of energy efficiency improvements in all type of existing buildings
House of Commons
Page 7
Martin Schaer IC BT, February 28th 2012
© Siemens AG 2011. All rights reserved
IC Building Technologies
Sustainable energy efficient operation
requires ongoing monitoring and optimization
Energy consumption in buildings
100%
90%
No BACS*
Borås Schools (SE)
 Payback in few month
 Reduction of 824,000
kg CO2 per year /-28%
BACS* without
Energy
Monitoring
BACS
and
80%
70%
Energymonitoring
Congleton UK
BACS
and
EnergyMonitoring
60%
and add.
measures
0
*) Building Automation and Control System
Page 8
time
House of Commons
Martin Schaer IC BT, February 28th 2012
© Siemens AG 2011. All rights reserved
IC Building Technologies
Energy management systems for daily operation
How much energy can you save in your building1)?
Hospital
Hotel
Residential
Restaurant
School
Office
Shopping
Center
26%
41%
27%
41%
26%
52%
49%
Energy savings are possible, in every building – in every business
1) High energy efficiency (Class A) compared to standard equipment (Reference Class C) EN 15232 – Impact of BACS and TBM on energy performance of buildings
House of Commons
Page 9
Martin Schaer IC BT, February 28th 2012
© Siemens AG 2011. All rights reserved
IC Building Technologies
Energy efficiency & Building Performance
Conclusions for revamping our bulding environment
Main leavers
 Fast refurbishment of
Action
 Focus on reasonable
building stock
measures with adequate
pay back
 Improvement of
 Monitoring / Benchmarking
user behavior
 Energy Efficiency for
New- & existing buildings
 Standardization
 Motivation for investors
and users
 Fast & cost efficient
energy savings
 Use of existing and certified
products and solutions
 Standard for (global) Europewide building certification
House of Commons
Page 10
Effects
Martin Schaer IC BT, February 28th 2012
 Outstanding solution
quality
 Enable
benchmarking
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IC Building Technologies