Improving Energy Performance of New and Existing Buildings Dr
Kerry J Mashford, Chief Executive, National Energy Foundation CIBSE
Building Performance Conference - October 2014 Improving the use of
energy in buildings Slide 2 NEF improving the use of energy in new
and existing buildings Management existing buildings Retrofit and
refurbishment Making better buildings Procurement new building
Making buildings better Dr Kerry J Mashford, CIBSE Building
Performance Conference October 2014 Slide 3 Probe 1995 -2002
exemplar buildings post occupancy actual twice as much as design
The scale of the problem
(http://www.cibse.org/index.cfm?go=page.view&item=2481#Probe
1)http://www.cibse.org/index.cfm?go=page.view&item=2481#Probe 1
Dr Kerry J Mashford, CIBSE Building Performance Conference October
2014 Slide 4 Carbon Trust studies (Low Carbon Buildings Accelerator
and Low Carbon Buildings Programme) Indicate actual energy use up
to 5 times higher than specified
http://www.carbontrust.com/media/81389/ctv038-low-carbon-refurbishment-of-buildings-management-guide.pdf
The scale of the problem Dr Kerry J Mashford, CIBSE Building
Performance Conference October 2014 Slide 5 InnovateUK Building
Performance Evaluation Programme Over 100 new build projects + 3
refurb 49 non-domestic studies, 56 buildings 366 dwellings
(developments 3989 dwellings) Completion and early occupation /
in-use Energy use typically 2.5- 4.5 times predicted 2010 - 2014 Dr
Kerry J Mashford, CIBSE Building Performance Conference October
2014 Slide 6 Non-Domestic Building types The BPE programme
buildings fall into 13 building types. Schools and offices are most
prevalent. Courtesy InnovateUK Dr Kerry J Mashford, CIBSE Building
Performance Conference October 2014 Slide 7 Composition of the
Performance Gap Slide 8 Dr Kerry J Mashford, CIBSE Building
Performance Conference October 2014 Slide 9 Emerging themes
courtesy InnovateUK Non-standard hours & unregulated loads
(TM22) Commissioning buildings fully commissioned Sub-meters and
reconciliation not functioning or understood BMS training,
complexity, functionality, commissioning Controls complexity,
operating instructions and labelling Lighting too much, zoning
deficiencies and lack of control Fabric performance specification
and construction HVAC integration and control of multiple systems
Renewables installation, operation and maintenance Energy strategy
not properly implemented ..what do these tell us? Dr Kerry J
Mashford, CIBSE Building Performance Conference October 2014 Slide
10 What can we do about it? Emerging Themes Root cause analysis
Actions to mitigate Dr Kerry J Mashford, CIBSE Building Performance
Conference October 2014 Slide 11 New Building Process Standards
Respond to relevant emerging themes Building Performance Exchange
please share! http://www.nef.org.uk/building-performance-exchange/
Address root causes Implement smart mitigation actions Embed in
practice; contracts; client pull Dr Kerry J Mashford, CIBSE
Building Performance Conference October 2014 Slide 12 Planning
Design Construction Process standards New Build Construction Design
In-use As-built Slide 13 Improving Energy performance in Existing
Buildings - VolDEC Legal & General, Building Energy Solutions,
National Energy Foundation Not for profit scheme to benefit whole
industry Separates landlord and tenant energy Piloted on 16
multi-tenanted offices extending to retail next Uses same
methodology as statutory DECs with extended G ratings for greater
differentiation Dr Kerry J Mashford, CIBSE Building Performance
Conference October 2014 Slide 14 VolDECs Why? Provides landlords
and tenants with comparative energy performance of the areas they
control Highlights building energy performance Provides a clear
driver for improving performance Gives reputational and financial
value to energy performance Provides a simple soft-start, leading
building operators towards more sophisticated benchmarking
Encourages greater retrofitting and energy related improvements,
resulting in better buildings, economic activity and jobs Aims to
established a consistent methodology and QA across the industry to
support the development of improved and relevant building energy
benchmarks e.g. type 4, scenario 5, office. Dr Kerry J Mashford,
CIBSE Building Performance Conference October 2014 Slide 15 Slide
16 VolDEC - Method and benchmarks Dr Kerry J Mashford, CIBSE
Building Performance Conference October 2014 Slide 17
www.nef.org.uk [email protected] Improving the use of
energy in buildings
