The case for Centres of Excellence in sustainable building design
The case for Centres of Excellence in sustainable building design
The case for Centres of Excellence in sustainable building design
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Appendix 2<br />
or technique. <strong>The</strong> annual abatement cost is the net social cost or benefit <strong>of</strong> abat<strong>in</strong>g 1<br />
tonne <strong>of</strong> carbon dioxide <strong>in</strong> a particular way. A negative cost shows an overall social<br />
benefit. <strong>The</strong> persistence factors are the lifetime <strong>of</strong> the abatement <strong>for</strong> each technology<br />
or technique, recognis<strong>in</strong>g that technologies require replacement be<strong>for</strong>e the end <strong>of</strong> life<br />
<strong>for</strong> a build<strong>in</strong>g project.<br />
From table 3 it can be determ<strong>in</strong>ed that the average cost <strong>of</strong> carbon abatement<br />
us<strong>in</strong>g the range <strong>of</strong> techniques <strong>in</strong>cluded <strong>in</strong> the McK<strong>in</strong>sey evaluation is £20/tCO2.<br />
S<strong>in</strong>ce the marg<strong>in</strong>al benefit <strong>of</strong> the project is the change to us<strong>in</strong>g techniques<br />
<strong>for</strong> energy conservation that have a net benefit it is necessary to evaluate the<br />
difference from the basel<strong>in</strong>e above. This is achieved by weight<strong>in</strong>g the abatement<br />
potential derived from the McK<strong>in</strong>sey curves which represent the total abatement<br />
possible and not that which is achievable under the bus<strong>in</strong>ess as usual scenario.<br />
In order to model the difference between the bus<strong>in</strong>ess as usual abatement<br />
potential and the potential <strong>in</strong>clud<strong>in</strong>g the benefit <strong>of</strong> graduates from <strong>Centres</strong><br />
<strong>of</strong> <strong>Excellence</strong>, the McK<strong>in</strong>sey values have been weighted to reflect the limited<br />
ability <strong>of</strong> current practitioners to fully realise the abatement potential <strong>of</strong> certa<strong>in</strong><br />
technologies. <strong>The</strong> weight<strong>in</strong>gs are expla<strong>in</strong>ed further below.<br />
Table 4: Weight<strong>in</strong>gs used to adjust the McK<strong>in</strong>sey /CBI MAC curve <strong>for</strong> current<br />
practitioners and <strong>for</strong> build<strong>in</strong>g eng<strong>in</strong>eer<strong>in</strong>g physics graduates work<strong>in</strong>g <strong>in</strong> the field.<br />
Current practitioner Current practitioner COE graduate COE graduate notes<br />
abatement weight cost weight abatement weight cost weight<br />
Build<strong>in</strong>g envelopes 0.5 1 1 1 Current practitioners do not fully<br />
utilise the potential <strong>of</strong> build<strong>in</strong>g<br />
envelope.<br />
Light<strong>in</strong>g 1 1 1.2 1 Graduates will move beyond low<br />
energy lamp replacement to use<br />
daylight<br />
Cavity wall Insulation 1 1 1 1<br />
Condens<strong>in</strong>g boilers 1 1 1 1<br />
Zero-carbon homes 1 1 1 -0.1 Graduates will avoid active<br />
technologies hence a sav<strong>in</strong>g <strong>of</strong><br />
10% on ma<strong>in</strong>tenance<br />
Solid wall <strong>in</strong>sulation 1 1 0.1 0.1 Graduates will have limited<br />
<strong>in</strong>volvement with solid wall<br />
<strong>in</strong>sulation<br />
Floor <strong>in</strong>sulation 1 1 0 1 Graduates will not apply floor<br />
<strong>in</strong>sulation<br />
Solar water heat<strong>in</strong>g 1 1 0.01 0 Graduates will have limited<br />
<strong>in</strong>volvement with solar water<br />
heat<strong>in</strong>g<br />
<strong>The</strong> weight<strong>in</strong>g <strong>of</strong> abatement potential is used to show how we predict the<br />
build<strong>in</strong>g eng<strong>in</strong>eer<strong>in</strong>g physics graduates to be able to provide either more<br />
abatement than McK<strong>in</strong>sey has predicted, or less. <strong>The</strong> weight<strong>in</strong>g <strong>of</strong> cost <strong>in</strong>dicates<br />
an assessment <strong>of</strong> the additional benefits <strong>of</strong> adopt<strong>in</strong>g the least cost solutions<br />
with<strong>in</strong> a range <strong>in</strong>cluded <strong>in</strong> the McK<strong>in</strong>sey predictions.<br />
• A weight<strong>in</strong>g <strong>of</strong> one <strong>in</strong>dicates no change from the McK<strong>in</strong>sey abatement<br />
potential or abatement cost;<br />
• a fractional weight<strong>in</strong>g is applied where the assessment <strong>of</strong> costs or benefits is<br />
lower than the McK<strong>in</strong>sey prediction. In other words graduates from <strong>Centres</strong><br />
<strong>of</strong> <strong>Excellence</strong> would not be responsible <strong>for</strong> achiev<strong>in</strong>g the entire abatement<br />
potential;<br />
<strong>The</strong> <strong>case</strong> <strong>for</strong> <strong>Centres</strong> <strong>of</strong> <strong>Excellence</strong> <strong>in</strong> susta<strong>in</strong>able build<strong>in</strong>g <strong>design</strong> 57