1. Untangling Energy Use with Voluntary Display Energy Certificates Malcolm Hanna, Technical Director, National Energy Foundation EMEX – 19 th November 2014 Improving the use of energy in buildings

2. Contents Display Energy Certificates How people use DECs The issue for Landlords and tenants The VolDEC solution Future development

3. It’s fairly tangled

4. Display Energy Certificates

6. How people use DECs Promotional device, clear indicator Enhanced when combined with promotional campaign Engagement and culture change Competitions between buildings Live dashboards Simple message easily included in reports and documents Clear indication of use and trends

8. The issues for Landlords and Tenants

9. The issue for Landlords and Tenants No split between Landlord and Tenant DEC shows whole building performance, one DEC. Cannot show improvements (or not) in what each control DECs use one benchmark for all offices, not a good match for many office types Many offices are ‘stuck’ at G, cannot show improvement

10. The issue for Landlords and Tenants Considerable enhancement could occur through: Review letter rating, finer grain approach Ensure benchmarks are understood and appropriate Letter rating potentially de- motivating, too coarse G rating has a very long tail, poor buildings hard to show improvement

11. The VolDEC Solution

12. The VolDEC solution

13. Voluntary scheme without government constraints Not for profit, for benefit of the industry, backed by the indusry To use authoritative sector specific benchmarks To highlight performance and encourage action and improvement To conduct benchmarking research for the industry Soft start the commercial sector into measuring performance Encourage deeper analysis to benefit building operators, designers and the whole industry The VolDEC solution - Aims

14. The VolDEC solution - the offering Easy access, quick, low cost No lodgement, no site visit, no advisory report Use the existing DEC methodology as the basis Use a ‘similar’ (improved) DEC certificate layout with A-G scale including G1- G4 and U = Unclassified Include a certificate quality rating: HIGH/MEDIUM/LOW to encourage better data quality Immediate feedback to encourage data quality improvement Better (& improving) benchmarks and categories, working with sectors

15. The VolDEC Method Statutory DECVolDEC MethodologyProduced using the methodology described in CIBSE TM47 BenchmarksUses CIBSE TM46 benchmarks. This provides only one benchmark for all office types. Uses ECON19 benchmarks for offices. This provides four different office types plus energy is broken down by end use for each type. Landlord / tenant split Unable to provide a separate landlord tenant DEC in the same building Uses the granular energy breakdown in ECON19 to provide composite landlord and tenant benchmarks for 5 different building scenarios.

16. The VolDEC Method

21. What do you need for a VolDEC? Building postcode Floor area Approximate hours of occupancy Annual energy use – landlord & Tenant Data year Main heating fuel type

22. What do you need for a VolDEC Choose office type – closest match

23. What do you need for a VolDEC Choose building Scenario – closest match

24. The benefits of VolDEC Provides landlords and tenants with comparative energy performance of the areas they control Stand-alone entry level engagement tool – simple, easy to produce and inexpensive Uses robust DEC method but with more appropriate benchmarks Highlights energy performance and provides a clear driver for improving performance The VolDEC process highlights anomalies and the need for more sophisticated benchmarking

25. Future Development

26. Future developments Water and waste (Environmental VolDEC) Floor by floor (individual tenant VolDEC) Shopping centres (new sector) Future on-line self-input Benchmarking reports / organisational reports

27. National Energy Foundation Primary objective is improving the use of energy in buildings. Providing affordable, accessible tools to help organisations understand and manage their energy use is a key objective. We think VolDEC can help to deliver this.

28. www.nef.org.uk Malcolm.hanna@nef.org.uk Improving the use of energy in buildings