sustainable refurbishment at scale - by stephen passmore, energy saving trust
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Sustainable refurbishment at Scale
Stephen Passmore
Energy Saving Trust
10 April 2023 2
Energy Saving TrustWe’ve saved £1.5 billion on people’s fuel bills and 140 million tonnes (lifetime savings) of CO2 since 1994.
We are the UK’s leading impartial organisation helping people save energy and reduce carbon emissions
Expert insight and knowledge about energy saving
Supporting consumers
to take action
Helping local authorities and communities to save energy
Providing quality assurance for goods, services and installers
3
Home energy use is
responsible for over a
quarter of UK carbon dioxide
(CO2) emissions
By 2050 all homes will need
to achieve an energy
performance rating in the
range of a high B if we are to
reach our target of a 80% cut
in CO2 emissions across the
entire housing stock
The headline retrofit challenge
Staged target of 29% cut in
CO2 from homes by 2020
Housing – retrofit potential
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Numerous approaches
Whole House
Street or neighbourhood - Area based approach
City / region
Projects / trigger points
www.rethinkingrefurbishment.com
National Refurbishment Centre
– Mission:
To support the practical delivery of green refurbishment and retrofit in the UK, based on evidence from a nationwide demonstration network of exemplar buildings.
– Aim:
To foster a more joined-up approach to finding the practical measures needed to refurbish buildings in volume.
www.rethinkingrefurbishment.com
The NRC Partnership
The NRC Research Programme
Installation issues
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Site issues
10
Work efficiency
11
Pre-Refurbishment Portal cost/savings curve
Evidence costs
£51k
Refurbishment Portal – June ‘11 cost/savings curve
Evidence costs
Refurbishment Portal – Jan ‘12 cost/savings curve
Evidence costs
ComparisonEvidence costs
£36k
£46k
Refurbishment Portal – Jan ‘12 excluding outliers
Evidence costs
£49k
Measures, products and systems
Evidence costs
Boiler replacement and controls package: £2.5k
Boiler replacement and controls package: £4.5k
PV: £13.9k
PV: £11.3k
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Trigger points project approach
• Overall: to establish the home improvement occasions that will be the best triggers for consumers to consider undertaking energy saving alterations at the same time
• Qualitative: to gain qualitative insights on the home improvement process and emotional drivers behind this as well as potential to consider energy saving alterations
• Quantitative: to quantify the size of opportunity at different points and during different projects
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Barriers to energy saving alterations
• Energy saving is rarely stated as a primary motivation for home improvements
–Number of other factors come before this, such as price, looks, quality, convenience
• Most of the sample claim to be keen to learn more about energy saving alterations
–Interested in helping the environment, even if only as a secondary motivation
–Very keen to learn any potential cost savings they could make
• Biggest barrier…. Other barriers…
INITIAL COST
Perception that energy saving alterations are very costly
Don’t want to make long-term investment - want the money in their pocket now
Don’t believe will add value to their property
May already be over ‘budget’ – don’t want to go further
May move in next few years so investment will be wasted
LOW AWARENESS
INERTIA INCONVENIENCE
LOOKS / STYLE
LACK OF EVIDENCE Will these changes really save much energy?
20
22% households considering refurbishment projects in next 3 years
Projects considering undertaking in the next 3 years…
Total home
owners
(1,287)
%
Fitting a new kitchen 10
Fitting a new bathroom / cloakroom 9
Fitting double glazing 6
Building a brick extension 5
Converting the loft 4
Refurbishing the entire property 2
Retiling the roof / building a new roof 2
Installing a conservatory 2
Rewiring / upgrading the electricity 2
Installing central heating 1
None of these 78Source: Ipsos Nat Rep CapiBus – wtd data
25.7 million households in UK
Home owners account for 70% of the population(17.5 mil households)
22% are considering
refurbishments in the next 3 years (3.9 mil households)
Trigger points
•Singles
Young children
Empty nesters
Growing children
Older children
Considering room refurbs and see the benefit in saving on energy bills and creating warmer rooms
Stronger commitment to environment
Limited budgets
Lower commitment to the environment
Higher budgets
Interested in all forms of retrofit but need convincing
Have already installed some
measures – interested in lower
cost measures
Interested primarily in warmth and
comfort
Greater commitment to
the environment
pre -930s (dwelling)
reluctant to add energy saving
measures, post 1930s could be
persuaded
Opp
ortu
nity
for
influ
ence
Young couples
Starting a family, moving home,
making property more
contemporary, adding value
Strong functional and emotive refurbishment need - running out of
space. Involved in higher value projects. Recognise the benefit of future proofing and reducing CO2
Driven by functional need to
update their properties.
Considering fewer projects overall
Preparing for retirement.
Interested in specific projects -
upgrading the heating, adding a
conservatory
Undertaking modernisation projects. Lower
budgets, willing to stretch but need a
lot more convincing
Achieving wide-scale refurbishment
• Demand!•Incentives•Financing•Standards
• Supply•Products & materials
•Logistics•Skills•Engagement
10 April 2023 22