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Carbon cost effectiveness assessment
This section looks at the measures in your proposed improvement plan and calculates the carbon cost effectiveness of each option, basically how much it costs to save a tonne of carbon. I have taken the figures from the previous page and added in the possible lifetime of the product based on guarantees offered. This lifetime figure is multiplied by the yearly CO2 saving to give a lifetime CO2 saving. The lifetime CO2 saving is then divided by the cost of the measure to give the cost per tonne of carbon saved.
Costs of installation are estimated, they are included to help you understand relative costs of different measures. These costs based on industry rates for similar work, these can become out of date quite quickly particularly with the challenging market conditions of the last few years. These are not competitive quotations actual costs may be higher or lower, they do not include any grants or incentives that you may be eligible for.
The figures can be updated with further details as the project gets further down the line and you get actual quotes for the work. The lifetime figure is an estimate based on the guarantees offered by installers, insulation may last a lot longer in reality. Ventilation is excluded from the calculation unless you opt for an MVHR system.
Phase 1 measures
Phase 1 Measures
Estimated Costs
Energy Rating
Fuel Bill
tCO2
Carbon Saving
Lifetime
Lifetime CO2 savings
Carbon cost effectiveness
Where you are now
Per Measure
70 C
£800.00
3.76
Phase 1 Measures
Remove secondary heaters - gas
£360.00
72 C
£760.00
3.49
0.27
25
6.75
£53
Block open chimneys
£300.00
72 C
£750.00
3.43
0.07
25
1.75
£171
Insulated floors (50mm) from 1967-1975 suspended timber floor
£6,380.00
74 C
£700.00
3.14
0.29
25
7.25
£880
300mm loft insulation from 250mm
£1,280.00
74 C
£700.00
3.12
0.02
25
0.50
£2,560
Humidity controlled kitchen extractor
£300.00
74 C
£700.00
3.12
0
8
0.00
Humidity controlled extractors per wetroom
£300.00
74 C
£700.00
3.12
0
8
0.00
Humidity controlled passive ventilation to non-wet rooms
£480.00
74 C
£700.00
3.12
0
8
0.00
After Phase 1 Measures
74 C
£700.00
3.12
0
0.00
Package Cost & % Improvements
£9,400.00
13%
17%
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Phase 2 Measures
Phase 2 Measures
Estimated Costs
Energy Rating
Fuel Bill
tCO2
Carbon saving
Lifetime of measure
Lifetime C02 savings
Carbon cost effectiveness
After Phase 1
Per Measure
74 C
£700.00
3.12
Install PV system where potential has been identified
£6,560.00
84 B
£380.00
2.55
0.57
25
14.25
£460.35
GSHP with existing radiator central heating and hot water, from A rated gas boiler
£18,000.00
85 B
£360.00
0.64
1.91
14
26.74
£673.15
After Phase 2 Measures
85 B
£360.00
0.64
Package Cost & % Improvements
£24,560.00
49%
79%
Cumulative Cost & % Improvements
£33,960.00
55%
83%
There are no rows in this table
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