Cardiff house energy efficiency
January 2026
Houses are energy-efficient. The average house energy rating in Cardiff postcode area is 64.6, D rating. This is by 0.8 better score than the average house energy rating in England and Wales. The average potential rating is 82.3, B rating.
Cardiff houses by energy rating
| Energy rating | Cardiff | England & Wales |
|---|
| █ A | 0.3% | 0.3% |
| █ B | 7.3% | 8.2% |
| █ C | 62.0% | 58.7% |
| █ D | 14.4% | 14.2% |
| █ E | 13.1% | 14.5% |
| █ F | 2.2% | 3.2% |
| █ G | 0.6% | 0.9% |
Cardiff map of energy efficiency of houses
Cardiff houses by potential energy rating
| Potential energy rating | Cardiff | England & Wales |
|---|
| █ A | 4.7% | 5.6% |
| █ B | 64.6% | 59.3% |
| █ C | 28.4% | 31.2% |
| █ D | 0.9% | 1.3% |
| █ E | 0.7% | 1.2% |
| █ F | 0.1% | 0.3% |
| █ G | 0.5% | 1.1% |
Cardiff houses by main heating control energy efficiency
| Main heating control | Cardiff | England & Wales |
|---|
| █ very poor | 8.4% | 4.4% |
| █ poor | 3.6% | 4.9% |
| █ average | 29.3% | 25.9% |
| █ good | 54.0% | 57.8% |
| █ very good | 4.7% | 7.1% |
Cardiff houses by main heating energy efficiency
| Main heat efficiency | Cardiff | England & Wales |
|---|
| █ very poor | 1.0% | 1.8% |
| █ poor | 0.9% | 2.3% |
| █ average | 3.8% | 8.5% |
| █ good | 92.1% | 84.5% |
| █ very good | 2.2% | 2.9% |
Cardiff houses by walls energy efficiency
| Walls efficiency | Cardiff | England & Wales |
|---|
| █ very poor | 30.6% | 22.5% |
| █ poor | 17.9% | 16.7% |
| █ average | 10.6% | 15.1% |
| █ good | 34.0% | 37.2% |
| █ very good | 6.9% | 8.5% |
Cardiff houses by windows energy efficiency
| Windows efficiency | Cardiff | England & Wales |
|---|
| █ very poor | 1.9% | 3.5% |
| █ poor | 4.1% | 4.9% |
| █ average | 57.2% | 55.1% |
| █ good | 31.0% | 29.2% |
| █ very good | 5.8% | 7.3% |
Cardiff houses by hot water heating energy efficiency
| Hot water heating energy efficiency | Cardiff | England & Wales |
|---|
| █ very poor | 2.1% | 3.7% |
| █ poor | 5.0% | 6.1% |
| █ average | 8.5% | 12.6% |
| █ good | 80.6% | 73.5% |
| █ very good | 3.8% | 4.0% |
Cardiff houses by lighting energy efficiency
| Lightning energy efficiency | Cardiff | England & Wales |
|---|
| █ very poor | 10.1% | 10.3% |
| █ poor | 8.8% | 7.9% |
| █ average | 14.5% | 13.0% |
| █ good | 17.4% | 17.0% |
| █ very good | 49.2% | 51.8% |
Plumplot area insights - interactive charts and maps
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