Devon home energy efficiency

January 2026

Residential buildings are ordinary efficient. The average home energy rating in Devon county is 64.3, D rating. This is by 1.7 worse score than the average home energy rating in England and Wales. The average potential rating is 79.3, C rating.

Devon homes by energy rating

Energy rating	Devon	England & Wales
█ A	0.4%	0.2%
█ B	11.7%	11.5%
█ C	55.6%	60.8%
█ D	11.8%	11.8%
█ E	14.4%	12.2%
█ F	4.5%	2.6%
█ G	1.6%	0.8%

Devon homes by potential energy rating

Potential energy rating	Devon	England & Wales
█ A	5.7%	3.6%
█ B	44.5%	47.8%
█ C	43.6%	44.6%
█ D	1.8%	1.5%
█ E	2.0%	1.3%
█ F	0.6%	0.3%
█ G	1.8%	0.7%

Devon homes by main heating control energy efficiency

Main heating control	Devon	England & Wales
█ very poor	2.3%	4.5%
█ poor	10.9%	8.2%
█ average	24.5%	25.3%
█ good	54.8%	56.4%
█ very good	7.5%	5.7%

Devon homes by main heating energy efficiency

Main heat efficiency	Devon	England & Wales
█ very poor	6.2%	6.4%
█ poor	5.4%	3.0%
█ average	16.2%	9.8%
█ good	68.0%	76.7%
█ very good	4.2%	4.0%

Devon homes by walls energy efficiency

Walls efficiency	Devon	England & Wales
█ very poor	19.6%	22.3%
█ poor	17.7%	15.9%
█ average	13.1%	12.9%
█ good	38.3%	38.0%
█ very good	11.3%	10.9%

Devon homes by windows energy efficiency

Windows efficiency	Devon	England & Wales
█ very poor	5.6%	5.4%
█ poor	5.3%	4.7%
█ average	48.9%	50.4%
█ good	31.0%	30.1%
█ very good	9.3%	9.3%

Devon homes by hot water heating energy efficiency

Hot water heating energy efficiency	Devon	England & Wales
█ very poor	10.3%	7.5%
█ poor	7.3%	6.3%
█ average	16.2%	12.9%
█ good	59.7%	68.1%
█ very good	6.5%	5.2%

Devon homes by lighting energy efficiency

Lightning energy efficiency	Devon	England & Wales
█ very poor	8.9%	10.5%
█ poor	6.9%	7.0%
█ average	11.8%	12.0%
█ good	16.1%	15.9%
█ very good	56.3%	54.6%

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