Cornwall home energy efficiency
January 2026
Residential buildings are energetically very inefficient. The average home energy rating in Cornwall county is 60.6, D rating. This is by 5.4 worse score than the average home energy rating in England and Wales. The average potential rating is 78.8, C rating.
Cornwall homes by energy rating
| Energy rating | Cornwall | England & Wales |
|---|
| █ A | 0.6% | 0.2% |
| █ B | 11.3% | 11.5% |
| █ C | 45.4% | 60.8% |
| █ D | 11.5% | 11.8% |
| █ E | 19.2% | 12.2% |
| █ F | 8.6% | 2.6% |
| █ G | 3.3% | 0.8% |
Cornwall map of energy efficiency of properties
Cornwall homes by potential energy rating
| Potential energy rating | Cornwall | England & Wales |
|---|
| █ A | 7.8% | 3.6% |
| █ B | 43.1% | 47.8% |
| █ C | 39.2% | 44.6% |
| █ D | 2.5% | 1.5% |
| █ E | 3.1% | 1.3% |
| █ F | 1.2% | 0.3% |
| █ G | 3.1% | 0.7% |
Cornwall homes by main heating control energy efficiency
| Main heating control | Cornwall | England & Wales |
|---|
| █ very poor | 2.8% | 4.5% |
| █ poor | 15.6% | 8.2% |
| █ average | 21.3% | 25.3% |
| █ good | 49.5% | 56.4% |
| █ very good | 10.8% | 5.7% |
Cornwall homes by main heating energy efficiency
| Main heat efficiency | Cornwall | England & Wales |
|---|
| █ very poor | 11.7% | 6.4% |
| █ poor | 9.3% | 3.0% |
| █ average | 27.3% | 9.8% |
| █ good | 47.6% | 76.7% |
| █ very good | 4.1% | 4.0% |
Cornwall homes by walls energy efficiency
| Walls efficiency | Cornwall | England & Wales |
|---|
| █ very poor | 22.4% | 22.3% |
| █ poor | 12.3% | 15.9% |
| █ average | 10.5% | 12.9% |
| █ good | 40.2% | 38.0% |
| █ very good | 14.6% | 10.9% |
Cornwall homes by windows energy efficiency
| Windows efficiency | Cornwall | England & Wales |
|---|
| █ very poor | 6.4% | 5.4% |
| █ poor | 5.0% | 4.7% |
| █ average | 43.1% | 50.4% |
| █ good | 34.1% | 30.1% |
| █ very good | 11.4% | 9.3% |
Cornwall homes by hot water heating energy efficiency
| Hot water heating energy efficiency | Cornwall | England & Wales |
|---|
| █ very poor | 19.0% | 7.5% |
| █ poor | 12.9% | 6.3% |
| █ average | 22.7% | 12.9% |
| █ good | 41.7% | 68.1% |
| █ very good | 3.7% | 5.2% |
Cornwall homes by lighting energy efficiency
| Lightning energy efficiency | Cornwall | England & Wales |
|---|
| █ very poor | 8.4% | 10.5% |
| █ poor | 6.5% | 7.0% |
| █ average | 10.9% | 12.0% |
| █ good | 15.2% | 15.9% |
| █ very good | 59.1% | 54.6% |
Plumplot area insights - interactive charts and maps
Next for Cornwall county
login →
