2. UK Context
UK 2008 Climate Change act set targets to reach of 80%reduction in
CO2 by 2050 from 1990 baseline levels
Maintaining UK Energy Security
In 2010 we only produced 70% of of consumption
Increasing the use of Low – Carbon Technologies
2009 - 8,000MW
2012 - 15,479MW
A 20% increase
3. UK Housing Context
Approx. 35% of all carbon emissions from
built environment
The average home emits over 5 ½ tons of
CO2 into the atmosphere every year
1 kWh Gas = 0.185kgCO2
1 kWh Electricity = 0.95kgCO2
27 million homes in UK – 59,000
refurbishments a month to reach targets!
4. Who are we?
The Green Building Partnership is a Co-
operative of companies based in Brighton &
Hove whose principle aim is to make
Brighton and Hove an exemplar green
building city by providing professional
building refurbishment services to a wide
range of clients, including but not restricted
to community organisations, home owners,
landlords and the public sector.
6. Green Building Partnership
Architects
Domestic Energy Assessors
On Construction Domestic Energy Assessors
Code for Sustainable Homes Assessors
Passivhaus Designers
Architectural technologists
Chartered engineers
Thermographers
Contractors – builders, electricians etc..
Financial Modeling
7. Cooperative Principles
Voluntary and Open Membership
Democratic Member Control
Member Economic Participation
Autonomy and Independence
Education, Training & Information
Co-operation among Co-operatives
Concern for community
8. What we do
Working in Brighton & Hove
Energy Assessments
Project Management
Eco – renovation
Monitoring & Evaluation
Green Deal
9. "If you can not measure it, you can
not improve it."
Lord Kelvin – Father of Thermodynamics
Energy Assessment
10. Standard Assessment Procedure for the Energy
Efficiency of Dwellings SAP2010
Rating between 1-100
based on:
Thermal efficiency of main house
structure
Type of ventilation and air
permeability
Type of fuel used
Efficiency of heating & hot water
system
Technologies such as solar or heat
pumps
12. The full service from initial survey,
planning, building regs, site
supervision
Architectural Services
Energy assessment, financial
modelling, Cost Benefit Analysis
Energy Assessment &
Financial modelling
Full on-site building services from
start to finish
Project Management
A one-stop
shop
13. Low Energy Assessment Fund 2012
- LEAF
Funded by DECC Feb/Mar 2012 - £60k
150 Home Energy Assessments
• Hanover
• Portslade
• Hollingdean
• Working with B&H 10:10 and the Brighton Energy
Cooperative
19. This showed that on average
the houses in each of the
areas would be suitable for
substantial improvements to
their homes
On average the homes could
reduce their CO2 emissions
by >40%.
This is also equivalent to an
annual fuel cost reduction of
>40%.
% reduction in CO2
CO2 emissions before
and after
5205
4756
4247
2527 2609
2414
0
1000
2000
3000
4000
5000
6000
Hanover Hollingdean Portslade
Average emissions - current (kg / yr)
Average emissions - potential (kg / yr)
0,0%
10,0%
20,0%
30,0%
40,0%
50,0%
60,0%
Average % savings
(per property)
24. Actual savings in Hanover
Aggregated data for total CO2 emissions savings
Total savings (all properties)
133,888 kg / yr
Average savings (per property)
2,678 kg / yr
Average % savings (per property)
50.4%
Aggregated data for CO2 emissions per
house
Average emissions - current
5,205 kg / yr
Average emissions - potential
2,527 kg / yr
Average savings
2,678 kg / yr
25. Green Deal Pioneer Places Project
2013
Funded by DECC Feb/Mar 2013 - £250k
• 100 Green Deal Energy Assessments across
Brighton & Hove
• Up to £10,000 of energy efficiency improvements
on 10 homes in B&H
• Including EWI/IWI
• Boiler changes
• Heating controls
• Loft insulation
• LED lights
26. What is The Green Deal?
A government led framework to let owners and tenants
pay for home improvements. The process:
Assessment
Recommendations
Quotes for work
Installation
Benefits
Golden Rule:
That the savings made in heating & electricity bills
will be greater than any repayment
30. To watch the Video of The Green Deal
Pioneer Places project please visit:
http://youtu.be/nFQoLFigq20
31. Online Portal to keep real time
data on the properties – Electricity
& Gas
2 years
Measuring the relative humidity,
moisture build up in critical
junctions
2 years
AECB
Measure My Energy
On going
Monitoring
32.
33. Case Study – Internal wall
Insulation
Adding 75 mm of PIR insulation to an
Internal wall recues the U value from 1.76 to
0.25 W/m2K
Heat Loss reduced by > 700%
This is for an element that loses 33% of
overall heat loss.
34. Case Study – External wall
Insulation
Adding 50 mm of Cork insulation to an
External wall reduced the U value from
0.52 to 0.28 W/m2K.
A 185% improvement
This is for an element that loses 33% of
overall heat loss.
35. Case Study – Roof Insulation
Adding 50 mm of PIR insulation
between the rafters and 100mm over
the top took the U value from 0.57 to
0.15 W/m2K.
A 380% improvement
This is for an element that loses 25%
of overall heat loss.
36. Case Study – Floor Insulation
Adding 50 mm of PIR insulation
between the joists and 100mm of
rockwool underneath took the U value
from 0.71 to 0.18 W/m2K.
A 394% improvement
This is for an element that loses 15%
of overall heat loss.
37. Case Study – Windows
Converting single glazed window units to
double or triple glazed alternatives is a
possibility. U values from 4.5 to under
1.5W/m2K for argon filled d/g and
<0.8W/m2k for t/g
A 565% improvement
This is for an element that loses 15% of
overall heat loss.
38. Case Study – Other?
Solar PV & Solar Thermal
Grass Roofs
Loft Conversion
Wood burning stove
39. Thanks for listening
Any questions:
Alex Hunt
Sustainable Building Consultant
01273 906572
alex@greenbuildingpartnership.co.uk
