1. 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

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

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

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

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

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

7. Composition of the Performance Gap

8. Dr Kerry J Mashford, CIBSE Building Performance Conference – October 2014

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

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

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

12. Planning Design Construction Process standards – New Build Construction Design In-use As-built

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

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

16. VolDEC - Method and benchmarks Dr Kerry J Mashford, CIBSE Building Performance Conference – October 2014

17. www.nef.org.uk kerry.mashford@nef.org.uk Improving the use of energy in buildings