Devon house energy efficiency

January 2026

Houses are ordinary efficient. The average house energy rating in Devon county is 63.1, D rating. This is by 0.7 worse score than the average house energy rating in England and Wales. The average potential rating is 81.1, B rating.

Devon houses by energy rating

Energy rating	Devon	England & Wales
█ A	0.6%	0.3%
█ B	11.1%	8.2%
█ C	53.1%	58.7%
█ D	13.0%	14.2%
█ E	15.3%	14.5%
█ F	5.1%	3.2%
█ G	1.8%	0.9%

Devon houses by potential energy rating

Potential energy rating	Devon	England & Wales
█ A	8.0%	5.6%
█ B	54.1%	59.3%
█ C	31.4%	31.2%
█ D	1.6%	1.3%
█ E	1.8%	1.2%
█ F	0.6%	0.3%
█ G	2.4%	1.1%

Devon houses by main heating control energy efficiency

Main heating control	Devon	England & Wales
█ very poor	2.2%	4.4%
█ poor	7.5%	4.9%
█ average	24.2%	25.9%
█ good	57.0%	57.8%
█ very good	9.1%	7.1%

Devon houses by main heating energy efficiency

Main heat efficiency	Devon	England & Wales
█ very poor	3.9%	1.8%
█ poor	5.0%	2.3%
█ average	15.4%	8.5%
█ good	71.8%	84.5%
█ very good	4.0%	2.9%

Devon houses by walls energy efficiency

Walls efficiency	Devon	England & Wales
█ very poor	17.5%	22.5%
█ poor	17.6%	16.7%
█ average	15.2%	15.1%
█ good	37.9%	37.2%
█ very good	11.7%	8.5%

Devon houses by windows energy efficiency

Windows efficiency	Devon	England & Wales
█ very poor	4.4%	3.5%
█ poor	5.1%	4.9%
█ average	50.0%	55.1%
█ good	30.5%	29.2%
█ very good	10.1%	7.3%

Devon houses by hot water heating energy efficiency

Hot water heating energy efficiency	Devon	England & Wales
█ very poor	7.4%	3.7%
█ poor	7.7%	6.1%
█ average	16.4%	12.6%
█ good	62.5%	73.5%
█ very good	6.0%	4.0%

Devon houses by lighting energy efficiency

Lightning energy efficiency	Devon	England & Wales
█ very poor	8.5%	10.3%
█ poor	7.2%	7.9%
█ average	12.2%	13.0%
█ good	16.7%	17.0%
█ very good	55.4%	51.8%

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