Fix it
Our confidence in our EPC ratings data has improved significantly over the last three years now that we have almost completed our programme of full stock condition surveys and we’re using specialist environmental modelling software. We are pleased to say that 72.16% of our homes are currently at our minimum target of EPC C or above.
EPC Rating |
Percentage of homes 22/23 |
A |
0.01% |
B |
15% |
C |
57% |
D |
27% |
E or less |
1% |
We are investing in building our own new homes that go over and above environmental requirements for new buildings. Where we buy new homes from housebuilders that they have constructed, we are negotiating enhancements to standards where we can.
We are looking to move from building all new homes to minimum EPC B, to minimum EPC A.
EPC rating |
Percentage of homes |
A |
11% |
B |
89% |
C |
0% |
D |
0% |
E or worse |
0% |
The following analysis has been provided through our SHIFT assessment:
Scope |
Activity |
Current analysis |
CO2 tonnes (tCO2e) |
1 |
Maintenance activities/fleet |
Emissions include gas used across all maintenance activities and fuel for maintenance fleets. SHIFT calculate our Scope 1 maintenance emissions based on DEFRA conversion factors of petrol and diesel purchased converted into carbon dioxide equivalent emissions. |
8,542 |
2 |
Office |
Emissions include all our office activities. |
574 |
3 |
Stock |
Predominately housing stock emissions that have been estimated using SAP and heating system data. It is calculated by Karbon (based on 68% EPC data and 32% analytical data from our stock condition surveys), and SHIFT using our snapshot annual data return for their methodology. |
74,786 |
Total |
83,902 |
*We are working to improve the quality of our data and to capture data to meet the full scope of each classification, particularly in relation to Scope 3 emissions which cover a vast area of our work.
As well as raising the standards of our new homes, our mission to refurbish our existing stock to meet at least EPC C continues. We spent £5m on energy efficiency action in 22/23. This includes the items listed below to show both their carbon savings and the impact on customers’ bills.
For balance, in the table below, we’ve shown both bill savings based on 2022 costs, and from the standard 2012 costs which are still in regular use across the industry. This way we can assess how savings look both now and in less volatile times:
|
Number of completions |
Average cost per unit (£) |
Total value (£) |
* Carbon saving per annum (TCO2) |
* Bill saving per annum @ present day costs (£) |
Total bill savings @ present day cost (£) |
Boilers |
1,768 |
2,320 |
4,101,760 |
778 |
240 |
1,375,504 |
Cavity wall insulation |
179 |
605 |
108,295 |
402 |
227 |
71,958 |
External wall insulation |
91 |
6,837 |
622,167 |
429 |
250 |
39,039 |
Windows and doors |
164 |
4,903 |
804,092 |
123 |
25.45 |
20,172 |
Air source heat pumps ** |
27 |
8,637 |
233,199 |
1,719 |
166.11 |
46,413 |
Loft |
297 |
420 |
124,740 |
243 |
87.65 |
72,286 |
*Carbon and bill savings have been calculated using Portfolio energy modelling software. Data sets to calculate average savings are as follows:
** Air source heat pumps replaced solid fuel systems and were accompanied by improved wall and loft insulation to mitigate potential increased fuel costs. By replacing solid fuel, we also improved customer safety, thermal comfort and air quality. Nevertheless, inflation in the electricity market has meant slight increases to bills, which will hopefully readjust as the market settles and provide even bigger gains as cheaper renewable electricity sources gain prevalence.