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Energy Performance Certificates
How could they help
your business?
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Welcome and introductions
Forthcoming changes to EPC legislation in Scotland
Bulk access to EPC Data available to a much wider group of organisations
We think this is very good news for the supply chain
Through an EU project designed to increase the use of EPCs throughout
Europe, we have funding for a portal to make EPC data available, when
the legislation changes
We need your feedback to understand how you use the data and how we
should make it available
We hope the session will be interesting and thank you for your time in
helping us shape this project to make the outputs useful for you
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Agenda
10:20 Overview of EPCs and changes to the legislation
10:40 Workshop session 1:
How could EPC data be used to help your business and increase the delivery of measures?
11:15 Break
11:30 Potential ways that data could be provided to the supply chain
11:45 Workshop session 2:
How can we best provide data to the supply chain
12:20 Lunch
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Energy Performance Certificates in Scotland
It is a requirement to provide an EPC to any prospective buyer or tenant of
dwellings being rented or sold
Also a requirement as a survey prior to: Green Deal
ECO
Home Energy Efficiency Programmes for Scotland (HEEPS)
New national energy assistance scheme
Renewable Heat Incentive
Feed-in tariffs
EPC assessments must be carried out by trained DEAs from ‘approved
organisations’
Designed to educate householders on the potential for energy efficiency
However, there are wider benefits to using ‘bulk data’ outputs
All EPCs are lodged on the Scottish EPC Register
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Context to delivery in Scotland
Many easy wins have already been undertaken. Less than 2% of the
Scottish housing stock estimated to have no loft insulation
Chasing an ever decreasing pool of properties eligible for schemes such as
ECO CSCO, HHCRO and HEEPS
NIA estimates costs of a solid wall lead to be up to £250 for ECO and up to
£500 for Green Deal
High suitability for microgeneration technologies - EPC is key to eligibility
Widely dispersed housing stock. Costs of unsuccessful visits are high
Greater access to EPC data could remove a number of
barriers to installation
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What information is contained in an EPC
Educational: Energy use, Fuel bills, CO2 emissions
Current and Potential SAP Ratings and EPC Bands
Survey information
Property tenure
Age of Construction
Wall Construction and insulation
Loft insulation
Glazing
Floor area
Number of habitable rooms
Fuel type
Boiler make and model
Potential measures information
Costs and payback information and Green Deal eligibility
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Quantity of domestic EPC data available
Local authority Total EPCs Local authority Total EPCs
Aberdeen City 55,267 Highland 49,426
Aberdeenshire 53,374 Inverclyde 20,106
Angus 26,173 Midlothian 21,967
Argyll and Bute 23,375 Moray 19,452
Clackmannanshire 13,778 North Ayrshire 35,606
Dumfries and Galloway 30,459 North Lanarkshire 74,517
Dundee City 38,978 Orkney Islands 4,249
East Ayrshire 33,080 Perth and Kinross 33,510
East Dunbartonshire 18,743 Renfrewshire 45,453
East Lothian 20,209 Scottish Borders 32,734
East Renfrewshire 17,990 Shetland Islands 2,965
Edinburgh City 133,027 South Ayrshire 29,213
Eilean Siar 4,063 South Lanarkshire 80,357
Falkirk 35,622 Stirling 22,056
Fife 92,277 West Dunbartonshire 31,498
Glasgow City 196,889 West Lothian 38,872
Total 1,335,285
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Data quality issues
EPCs are well known for having inaccuracies in methodology and data collection
However, they are still the most robust overall data on the housing stock available
Focus on weeding out the 10% inaccurate records and getting value from the data
Out of date records - add installations datasets
Skews and biases – calibrate to datasets such as census
Inaccuracies – cross reference where possible with additional dataset
What about the other 68% - statistical models can be used to predict values
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Who can currently access EPC data
EPCs are currently available for approximately 32% of the housing stock
If you have the RRN, anybody can access an individual EPC via the EPC
Register
However, bulk access is limited to: • Scottish Government
• Approved Organisations
• Enforcement Authorities
• Keeper of the Register
• Green Deal relevant person
• Holder of a licence for electricity generation or supply
Users must apply to the Keeper of the EPC Register
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Changes to the EPC legislation
Changes to the legislation are currently being finalised by the Scottish
Government which could transform the ways in which EPCs are used
Scheduled to take place in Summer 2015
Remove the ‘personal data’ status of the EPC
Data likely to be available to a wider group of organisations, including the
supply chain, with fewer restrictions on use
Removal of ‘personal data’ status increases the possibility of ‘open access’
portals
Scottish Government is keen to get feedback from the supply chain on the
usefulness of the data and ways it can be used
These changes have the potential to unlock value in the EPC data
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For what purposes can EPC data be used?
• Promoting energy efficiency improvements in relation to buildings.
• Conducting research into, or developing or analysing policy (or policy proposals) in relation to, the energy efficiency of buildings.
• Conducting research into the effectiveness or impact of energy efficiency improvements.
• Identifying geographic areas where the energy efficiency of buildings is low relative to other areas, or conducting research into the extent, causes or consequences of such lower levels of efficiency.
• Promoting and marketing energy efficiency improvements that may be made pursuant to a green deal plan.
• Identifying and analysing the impact of carbon emissions on the environment resulting from buildings with low levels of energy efficiency.
• Determining whether energy efficiency improvements that may be made pursuant to a green deal plan have or have not been made in respect of a particular building or buildings.
Permitted uses of the data are already quite broad
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Ways that EPC data could be used to
increase installation activity
Identify individual properties – target through direct marketing, door knocking.
Target householders with bespoke offers
Filter out ineligble households
Identify areas of high potential or market segments. General advertising.
Include data in an online tool for householders. Similar to Home Energy Check
Government to send modelled EPC to every household
Public access website to raise awareness of energy performance
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Workshop session 1: How would you use EPC data?
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Workshop: How could you use EPC data
to help your business
1. How is data currently used in your business?
2. What data from the EPC would you value the most?
3. How would you use EPC Data to increase the delivery of energy efficiency and renewable energy measures?
Discuss all 3 questions
Write answers to question 3 on the post it notes
Feedback to the group after 25 minutes
Vote on the potential uses of EPC data
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Ways in which data can be provided
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Aggregate reports
Example: EPC bands at Datazone level
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Ward Solid Walls
Bickenhill 1137 22%
Blythe 550 10%
Castle Bromwich 936 20%
Chelmsley Wood 420 8%
Dorridge and Hockley Heath 668 15%
Elmdon 825 16%
Kingshurst and Fordbridge 432 8%
Knowle 740 18%
Lyndon 2276 42%
Meriden 986 21%
Olton 1385 27%
Shirley East 1484 33%
Shirley South 1100 22%
Shirley West 1664 33%
Silhill 1697 34%
Smith's Wood 412 8%
St Alphege 844 17%
Solihull Total 17556 21%
Aggregated report for targeting SWI installations
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National Heat Map
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DECC gas and electricity consumption
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Aggregated data reports and maps
Pros
Quick to download
Few restrictions on use
Easy to interpret and compare across areas
Useful for understanding overall markets and trends
Cons
Large geographies can contain a large mix of housing types
Are the geographies meaningful (Datazones?)
Can’t be used for targeting particular streets or houses
More useful for quantifying rather than targeting
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Address level data (DECs)
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Address level reports
Pros
Address level data for targeting
Avoid addresses with measures already installed
Combine datasets, eg solid wall, off gas, large detached homes
Combine with other data, eg consumer segmentation or customer information
Excel able to handle several hundred thousand rows
Cons
Large datasets require data handling capability
Harder to get an overall impression of markets and areas
Hard to make sense of hundreds of thousands of rows of data
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Address level mapping and portal
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Address level mapping
Pros
Excellent visual aid
Easy and quick to use
Can identify individual addresses and also get overall impression of area
Could sit alongside address level excel reports
Cons
Number of datasets available for display limited
Functionality limited
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Example: EST Home Analytics Interactive
analysis portal
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Home Analytics GIS: google maps integration
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Interactive analysis portal
Pros
Able to search for the data you need
Aids decision making rather than just data provision
Integrated maps and data
Spreadsheet downloads
Quickly evaluate large areas
Less technical than pure data analysis
Cons
Slower to download and produce
Less flexibility to add new data
Higher cost. Potential costs to users
Licence restrictions for advanced software. Not open source.
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Workshop 2: How should EPC data be provided?
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Workshop 2: How should EPC data be
provided?
What are the essential features you need from a portal?
Ease of use or accuracy of data
Top level market information or address level targeting
Full property survey or just essential information
Mapping or pure data
Ability to filter and manipulate data
Street level mapping
Zero cost, low cost or willing to pay for functionality
Basic data with few restrictions or detailed data with restrictions
Write on post it notes
Vote on the essential features
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Contact information:
Will Rivers
Ian Cuthbert
