REEPS6/3
Summary of comments taken forward outwith energy modelling
Comments arising from the Brief drafting exercise – with some possible early scenarios noted.
Wider Policy issues
Issue
Will this modelling approach address
Fuel Poverty (as well as Climate
Change)?
The ‘Golden Rule’ concept (in the
wider sense) - Balance between
addressing Fuel Poverty and climate
change
Implicit assumption that energy
efficiency improvements will reduce
carbon emission
Embodied carbon (of retrofit
measures)
Harmonisation’ of energy efficiency
with the social sector
Agreed – Also noted that pre 1919
tenements can be mixed tenure. Will
also assist social landlords to enable
delivery of mixed tenure.
Other SG policy - Heat networks could
play a role.
Response
How being taken forward
As the typology will be derived from Scottish House
Condition Survey (SHCS), it would be possible to
examine archetypes against meta data in SHCS, eg.
income details from the social survey aspects of
SHCS
The ‘cost-effectiveness’ of measures will be covered
by the PRINCIPLES for the hierarchy. The contractor
to develop the evidence.
CAS will be able to review archetypes
with income data. This could assist EQIA
too.
Come back to this when evidence developed (and
exemptions can then be considered)
The contractor is invited to provide commentary on “in
use factors” in the brief (which DECC uses). Also,
could be a positive outcome if using the same amount
of energy, if previously under- heating.
Local products can be considered, if desired.
Consider as a possible scenario
The contractor has been asked to model only the
poorest performing properties, and that generally the
private sector does not have as high a level of energy
efficiency as the social sector.
Any Exemptions can be discussed after
the modelling evidence has been
developed.
Drafting consultation document (if
desired), re ‘re-bound effect’.
Drafting consultation document (if
desired), re ‘local products consideration’.
Drafting of consultation document can
consider this.
SG is also developing a common standard across
tenures to improve house condition.
Watching brief on common standards
policy development.
Also how to deal with housing stock with communal
elements. A ‘read-across’ tenures would be helpful
here and would assist RSLs/LAs in trying to improve
Consider as a possible scenario
1
REEPS6/3
Summary of comments taken forward outwith energy modelling
Community solutions: may help fuel
poverty, especially where properties are
off the gas grid. Further, there are
targets for district heating for 2020. Care
has to be taken that there is not too
much focus on electric heating only.
their stock/enable owners.
Wider Context subgroup to note the role that draft
regulations can play to ‘nudge’ connectivity to district
heating solutions.
A ‘matrix of measures’ may emerge at the end of
the modelling. This can be progressed after modelling
in Phase 2.
Wider Context subgroup to consider
how draft regulations can play a role in
district heating delivery. Also, there is the
incentives aspect. (NB community wind
turbines too).
Technical Issues
Issue
Response
How being taken forward
This is discussed in various papers eg:
Review how to deal with older buildings
with Tech subgroup.
Pre-1919 buildings – different
construction techniques and materials.
Every traditional building can potentially
take an appropriate upgrade
Listed/Conservation properties ‘cultural listing’, rather than a technical
issue. ‘Conservation Areas’ - greater
numbers than ‘Listed buildings’.
Various Technical Issues raised



Historic Scotland (including technical papers)
Academia: eg. “A Risk Based Methodology To
Assess The Energy Efficiency Improvements In
Traditionally Constructed Buildings”, D. Herrera,
A. Bennadji (added to Evidence repository)
Also an archetype in EESSH modelling (in
Evidence repository)
(check treatment in RdSAP - now)
Risks and Benefits’ section of the Report will cover
this.
CAS can review SHCS for numbers. Part
of Report from modelling exercise.
Issues can be explored with the Tech subgroup,
eg.
 Potential of improvements delivered under the
policy to reduce the subsequent maintenance
costs
 “indoor air quality” issues re ventilation and
condensation issues.
Review how to deal with buildings issues
with Tech subgroup.
‘In situ’ versus modelled energy demand
Wider Context group could examine ‘re2
REEPS6/3
Summary of comments taken forward outwith energy modelling
and carbon reduction – for example
reduced savings due to rebound effect
and performance gap.
Is it possible to determine the cost of
improvement measures for each
household
Retrofit measures issues
Issue
Re-bound effect part of ‘Behaviour change’ aspect.
bound effects’ as part of Behaviour
change.
Technical issues part of Technical issues with RdSAP Tech group to examine technical issues
etc.
related to RdSAP etc.
This is not possible for every household as they vary, CAS: meta data already gathered as part
however it was noted that this could be considered for of the SHCS.
inclusion as a scenario, if it was expressed as
The ‘segmentation of households’ could
“average kwh saved”?
also assist the Equalities Impact
Assessment
Response
How being taken forward
The contractor will provide proposed
principles for the hierarchy, which as
an example, would include principles
such as ‘cost-effectiveness’ and ‘ capital
cost’. This will then be discussed with
REEPS and the Technical sub-group,
prior to agreement with the contractor.
Contractor to justify principles for REEPS to consider.
To assess the cost-effectiveness of
energy efficiency improvements as
defined by the Green Deal Golden
Rule.
Learning and take up from Green Deal and the
accreditation process.
BRIA will include appropriate retrofit
measures.
As measures will be modelled incrementally, this
would be more akin to a ‘whole house retrofit’,
particularly as Marginal Abatement Curves will be
created. Where an individual wishes to install
measures over and above the target set, they would
free to do so. If ‘future milestones’ could be indicated
(say towards 2050 targets), this could provide
additional impetus to do so. It was recognised that
individual householders are likely to be more cost
3
After modelling in Phase 2
‘Whole house retrofit’ – if measures
are looked at individually, it may be
advantageous (whether in terms of
disruption, greater carbon reductions
etc.) to apply a number of measures at
the same time in a more holistic
manner.
Part of Evidence Repository, eg.
“Understanding Homeowners’ Renovation Decisions:
Findings of the VERD Project”, UKERC, now added.
BRIA will include appropriate retrofit
measures.
Drafting guidance at the end –
indication of future milestones? –
emphasise free to go above minimum
EPC Band, and indeed the higher the
SAP rating, the less it would cost to heat
your house.
REEPS6/3
Summary of comments taken forward outwith energy modelling
sensitive than those who may wish to take a portfolio
approach.
Multi-skilled intervention may be required in rural
areas, however this may be an area specific issue.
Consider as a possible scenario –
different issues for different parts of the
country (should there be a difference
between urban and rural areas.
Part of the Report - During modelling
Exercise (Phase 2)
To be aware of ‘Diminishing returns’,
where dwellings are at a slightly higher
level of energy efficiency already, and to
‘achieve’ a rating, this may become
harder to do so.
The modelling will be expressed in numbers (energy
efficiency rating), so we will have the ‘raw data’. We
can ask the consultant to advise of instances/
particular archetypes this affects (as it may well be a
general issue)
The lifespan of an already installed
product needs to be taken into account.
‘Risks and Benefits’ section of the Modelling exercise
Report will address this.
Also an issue to come back when we
come to drafting - ‘HOW WE SET THE
STANDARDS’
Check understanding at Inception
Meeting with the appointed contractor
Only costs directly relating to the
measure should be included
Costs associated with potential issues, due to say,
extra ventilation measures, should not be included.
Only direct costs associated with
measures to be included.
Wider Context Issues
Issue
Response
How being taken forward
It would be advantageous if could overview the roles
and interface of the Individual/Council and funding
sources, to try to better target energy efficiency work.
Tech group can also review interface,
alongside Wider Context.
Once the modelling outputs are known, Wider
Context subgroup can review what incentives would
be available at that time.
Consider as a possible scenario
(incentives).
Also, looking beyond incentives, to green lending.
Part of Wider Context remit.
For Wider Context group
Part of Wider Context remit
Role of Incentives
Effects on Housing Market supply
4
REEPS6/3
Summary of comments taken forward outwith energy modelling
‘Community solutions
See above – Wider Policy Issues
5
See above – Wider Policy Issues