Empowerment through Operational Energy Use Data Greenbuild Expo - 2015 K erry J Mashford, Chief...

Empowermentthrough

Operational Energy Use DataGreenbuild Expo - 2015

Kerry J Mashford, Chief Executive, National Energy Foundation

Improving the use of energy in buildings

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.

Dr Kerry J Mashford, Greenbuild Expo – November 2015

Context“ Non residential buildings emissions have stayed flat, with little evidence of any energy efficiency improvement” Committee on Climate Change – 2015 Report to Parliament


“Only 371 out of the estimated 10,000 obligated companies (3.7%) have completed their energy audits.” ESOS – deadlines extended“Reforming the business

energy efficiency tax landscape”HM Treasury Consultation - closed 9th November

“SMEs missing out on energy saving opportunities”DECC speaker at recent event

“ Actual vs predicted energy performance for new non-domestic buildings shows typical performance gap of 2.5 – 4.5 times”To be confirmed following publication of initial aggregated data from Innovate UK BPE programme expected 24th November

Clear need for good operational energy data -

• Identify total energy use / cost• Benchmark against peers• Prioritise energy related improvements – capital,

education, building management• Make the business case• Track progress• Correlate with e.g. productivity, health, staff t/o

It’s fairly tangled


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


Commercial buildings

• 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,

no benchmarks for shopping centres• Many offices are ‘stuck’ at G, cannot

show improvement


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


The VolDEC solution

Building Energy Solutions Energy Management, Research & Training Consultancy


The VolDEC solution - Aims

• Voluntary scheme without government constraints • Not for profit, for benefit of the industry, backed by

the industry• Soft start the commercial sector into measuring

performance• To use authoritative sector specific benchmarks• To highlight performance and encourage action and

improvement

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, improved layout

Include a certificate quality rating: HIGH/MEDIUM/LOW

Better (& improving) benchmarks and categories, working with sectors


The VolDEC Method

Statutory DEC VolDEC

Methodology Produced using the methodology described in CIBSE TM47

Produced using the methodology described in CIBSE TM47

Benchmarks Uses 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.

The VolDEC Method


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


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


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


The benefits of VolDEC

• Stand-alone entry level engagement tool – simple, easy to produce and inexpensive

• Uses robust DEC method but with more appropriate benchmarks• Provides landlords and tenants with comparative energy

performance of areas they control• Highlights energy performance and a clear driver for improvement • VolDEC process highlights anomalies and the need for detailed

investigations• Works alongside any government requirements to deliver and track

real opportunities and progress in straightforward, accessible tool.


NEF – resources and information

• National Energy Foundation - improving the use of energy in buildings - www.nef.org.uk • YouGen - making renewable energy easy - www.yougen.co.uk • SuperHomes - opening doors to low-energy refurbishment - www.superhomes.org.uk • Ace for Communities - engaging citizens in community energy projects - www.aceforcommunities.net • Energy Envoys - making a difference to people and places - www.energyenvoys.org.uk • LogPile - using and finding wood as a heating fuel - www.logpile.co.uk • VolDEC - benchmarking energy performance of buildings to improve efficiency - www.voldec.com

Thank you

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