Energy Audit and Implementation in Practice in Residential Buildings Building Energy Efficiency in the Baltics (BENEFIT-2006) Riga, October 25, 2006 Petri Jaarto Motiva Oy.
Download ReportTranscript Energy Audit and Implementation in Practice in Residential Buildings Building Energy Efficiency in the Baltics (BENEFIT-2006) Riga, October 25, 2006 Petri Jaarto Motiva Oy.
Slide 1
Energy Audit and Implementation in
Practice in Residential Buildings
Building Energy Efficiency in the Baltics (BENEFIT-2006)
Riga, October 25, 2006
Petri Jaarto
Motiva Oy
Slide 2
Presentation outline
•
•
Housing stock characteristics
Main policy instruments for energy
efficiency
•
Examples
Slide 3
Motiva Ltd
•
•
Fully government-owned company
Develops and carries out projects for the
implementation of the national climate change
strategy
•
•
Turnover 4 M€, personnel 30
Main clients:
• Ministry of Trade and Industry
• Other government ministries
• European Commission
• National technology agency TEKES
• the private sector
•
www.motiva.fi/en
Slide 4
Finnish Building Stock (1995)
300,0
250,0
Mill. m³
200,0
150,0
Offices
Education
Health care
Commercial
Summer cottages
Blocks of flats
Row housing
Single family houses
100,0
50,0
0,0
< 1920 1920-50 1950-60 1960-70 1970-80 1980-90 1990-95
Year of construction
Slide 5
Energy consumption for space heating
Apartment buildings
75
Energy consumption (kWh/m³/year)
65
97 %
91 %
55
79 %
61 %
39 %
45
21 %
9%
35
3%
25
1930 1935 1940 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995
Year of construction
Slide 6
Young building stock and
policy priorities
•
Young building stock means
• in principle reasonably good
technical condition
• relatively good starting point
in energy performance
• economic life spans not yet
at their end
•
Resulting policy priorities
• strong emphasis on practices
for building management and
preventive maintenance
• development of concepts for
the upcoming refurbishment
period
Slide 7
Governmental
Energy and climate strategies
Land Use and Building Act
Government’s Energy
Conservation Programme
Construction Policy Programme
Private
Public-private
Building Code
Voluntary Energy
Conservation Agreements
Energy Audit Programme
Energy Investment & Renovation Subsidies
Technological R&D Programmes
Experimental Construction,
Demonstration Projects
Development Initiatives within Individual
Property and Construction Companies
Branch level development programs
Slide 8
Energy audits for
residential buildings
•
•
•
Common models and guidelines developed
•
Public support 40 % of audit cost (50 % for
organisations within the voluntary
agreement scheme)
•
Support scheme started 2003
• no systematic follow-up so far
• estimated number of audits …
Trained and informed auditors
Cost of audit 1800…3500 €/building
(incl. VAT 22%)
Slide 9
Energy audit procedure for
residential buildings
BASIC DATA
• client supplies the auditor with basic information and building size,
energy and water consumption and other technical background
information
FIELD WORK
• overall building
inspection
• assessment of the
energy performance of
building systems
• apartment inspections
• relevant measurements
•…
ANALYSIS
REPORTING
• analysis of
measurement and other
data
• building modelling
• säästökohteiden
analyysi
• audit report, incl.
description and
assessment of the
building and its systems,
energy performance
assessment,
recommendations
Slide 10
Energy renovation
subsidies
•
•
•
•
Available since 2003 for buildings with 3+ apartments for
additional costs related to
improving or replacing windows
additional insulation of external walls or roof
connecting to district heating or renewing district heat consumer
equipment
renewing oil boilers and burners
converting electric heating to ground source heat pumps or
complementing it with air-to-air heat pumps
installing ventilation heat recovery, low-emission pellet boilers,
solar water heating and apartment water meters
balancing of hydronic heating systems and ventilation systems
Subsidy level 10…15 % of costs
No systematic follow-up so far
Support allocated in 2003:
14.8 mill.€ for appr. 2 500 buildings with 97 000
apartments
Slide 11
Comprehensive energy
refurbishments: an example
•
•
•
•
•
Rental apartment property
owned by the municipality of
Oulainen
29 dwellings, 66 residents
Dwelling area 1833 m²
Year of construction 1971
Energy efficiency measures
• Additional insulation of facade
KOY Kaari-Salpa
Oulainen
source: VTT Building Technology, 1998
external 50-100 mm rockwool insulation
• Additional insulation of roof
blown rockwool
• New doors and windows
• Improvement of roof
• Dwelling ventilation units with heat
recovery
Slide 12
KOY Kaari-Salpa
Results
•
•
Costs to client 490 €/m²
•
•
•
•
•
Construction
Ventilation
Piping, plumbing
Reduction in energy and
water costs
66 %
0.7 €/m²/month
8%
13 %
k W h /m ³
Electrical systems
6%
70
Other costs
7%
60
l/p e rs o n /d a y
300
H e a t (k W h /m ³)
E le c tric ity (k W h /m ³)
250
W a te r (l/p e rs o n /d a y)
50
•
200
Impact on rent level
1.2 €/m²/month (~30%)
40
150
30
100
20
50
10
0
0
B e fo re re fu rb is h m e n t
source: VTT Building Technology, 1998
A fte r re fu rb is h m e n t
Slide 13
Concluding remarks
•
Initiatives are driven by the current
national climate change strategy
•
Emphasis of policy measures on
• apartment buildings
• voluntary measures
• management and maintenance practices
• lowering the threshold for longer-term efficiency
improvement in conjunction with refurbishment
and technical upgrading
•
Energy audits constitute a basis for
investors decisions
Slide 14
Elements of R&D on life cycle
based business models
•
Performance specifications
•
Models and tools for tendering and
contracting
•
Risk assessment and risk management
•
Performance assessment and verification
Slide 15
THANK YOU !
Energy Audit and Implementation in
Practice in Residential Buildings
Building Energy Efficiency in the Baltics (BENEFIT-2006)
Riga, October 25, 2006
Petri Jaarto
Motiva Oy
Slide 2
Presentation outline
•
•
Housing stock characteristics
Main policy instruments for energy
efficiency
•
Examples
Slide 3
Motiva Ltd
•
•
Fully government-owned company
Develops and carries out projects for the
implementation of the national climate change
strategy
•
•
Turnover 4 M€, personnel 30
Main clients:
• Ministry of Trade and Industry
• Other government ministries
• European Commission
• National technology agency TEKES
• the private sector
•
www.motiva.fi/en
Slide 4
Finnish Building Stock (1995)
300,0
250,0
Mill. m³
200,0
150,0
Offices
Education
Health care
Commercial
Summer cottages
Blocks of flats
Row housing
Single family houses
100,0
50,0
0,0
< 1920 1920-50 1950-60 1960-70 1970-80 1980-90 1990-95
Year of construction
Slide 5
Energy consumption for space heating
Apartment buildings
75
Energy consumption (kWh/m³/year)
65
97 %
91 %
55
79 %
61 %
39 %
45
21 %
9%
35
3%
25
1930 1935 1940 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995
Year of construction
Slide 6
Young building stock and
policy priorities
•
Young building stock means
• in principle reasonably good
technical condition
• relatively good starting point
in energy performance
• economic life spans not yet
at their end
•
Resulting policy priorities
• strong emphasis on practices
for building management and
preventive maintenance
• development of concepts for
the upcoming refurbishment
period
Slide 7
Governmental
Energy and climate strategies
Land Use and Building Act
Government’s Energy
Conservation Programme
Construction Policy Programme
Private
Public-private
Building Code
Voluntary Energy
Conservation Agreements
Energy Audit Programme
Energy Investment & Renovation Subsidies
Technological R&D Programmes
Experimental Construction,
Demonstration Projects
Development Initiatives within Individual
Property and Construction Companies
Branch level development programs
Slide 8
Energy audits for
residential buildings
•
•
•
Common models and guidelines developed
•
Public support 40 % of audit cost (50 % for
organisations within the voluntary
agreement scheme)
•
Support scheme started 2003
• no systematic follow-up so far
• estimated number of audits …
Trained and informed auditors
Cost of audit 1800…3500 €/building
(incl. VAT 22%)
Slide 9
Energy audit procedure for
residential buildings
BASIC DATA
• client supplies the auditor with basic information and building size,
energy and water consumption and other technical background
information
FIELD WORK
• overall building
inspection
• assessment of the
energy performance of
building systems
• apartment inspections
• relevant measurements
•…
ANALYSIS
REPORTING
• analysis of
measurement and other
data
• building modelling
• säästökohteiden
analyysi
• audit report, incl.
description and
assessment of the
building and its systems,
energy performance
assessment,
recommendations
Slide 10
Energy renovation
subsidies
•
•
•
•
Available since 2003 for buildings with 3+ apartments for
additional costs related to
improving or replacing windows
additional insulation of external walls or roof
connecting to district heating or renewing district heat consumer
equipment
renewing oil boilers and burners
converting electric heating to ground source heat pumps or
complementing it with air-to-air heat pumps
installing ventilation heat recovery, low-emission pellet boilers,
solar water heating and apartment water meters
balancing of hydronic heating systems and ventilation systems
Subsidy level 10…15 % of costs
No systematic follow-up so far
Support allocated in 2003:
14.8 mill.€ for appr. 2 500 buildings with 97 000
apartments
Slide 11
Comprehensive energy
refurbishments: an example
•
•
•
•
•
Rental apartment property
owned by the municipality of
Oulainen
29 dwellings, 66 residents
Dwelling area 1833 m²
Year of construction 1971
Energy efficiency measures
• Additional insulation of facade
KOY Kaari-Salpa
Oulainen
source: VTT Building Technology, 1998
external 50-100 mm rockwool insulation
• Additional insulation of roof
blown rockwool
• New doors and windows
• Improvement of roof
• Dwelling ventilation units with heat
recovery
Slide 12
KOY Kaari-Salpa
Results
•
•
Costs to client 490 €/m²
•
•
•
•
•
Construction
Ventilation
Piping, plumbing
Reduction in energy and
water costs
66 %
0.7 €/m²/month
8%
13 %
k W h /m ³
Electrical systems
6%
70
Other costs
7%
60
l/p e rs o n /d a y
300
H e a t (k W h /m ³)
E le c tric ity (k W h /m ³)
250
W a te r (l/p e rs o n /d a y)
50
•
200
Impact on rent level
1.2 €/m²/month (~30%)
40
150
30
100
20
50
10
0
0
B e fo re re fu rb is h m e n t
source: VTT Building Technology, 1998
A fte r re fu rb is h m e n t
Slide 13
Concluding remarks
•
Initiatives are driven by the current
national climate change strategy
•
Emphasis of policy measures on
• apartment buildings
• voluntary measures
• management and maintenance practices
• lowering the threshold for longer-term efficiency
improvement in conjunction with refurbishment
and technical upgrading
•
Energy audits constitute a basis for
investors decisions
Slide 14
Elements of R&D on life cycle
based business models
•
Performance specifications
•
Models and tools for tendering and
contracting
•
Risk assessment and risk management
•
Performance assessment and verification
Slide 15
THANK YOU !