Wales house energy efficiency

January 2026

Houses are ordinary efficient. The average house energy rating in Wales region is 62.1, D rating. This is by 1.7 worse score than the average house energy rating in England and Wales. The average potential rating is 81.3, B rating.

Wales houses by energy rating

Energy rating	Wales	England & Wales
█ A	0.5%	0.3%
█ B	7.1%	8.2%
█ C	55.4%	58.7%
█ D	13.9%	14.2%
█ E	16.1%	14.5%
█ F	5.0%	3.2%
█ G	1.9%	0.9%

Wales houses by potential energy rating

Potential energy rating	Wales	England & Wales
█ A	5.5%	5.6%
█ B	58.3%	59.3%
█ C	30.7%	31.2%
█ D	1.3%	1.3%
█ E	1.4%	1.2%
█ F	0.5%	0.3%
█ G	2.2%	1.1%

Wales houses by main heating control energy efficiency

Main heating control	Wales	England & Wales
█ very poor	6.8%	4.4%
█ poor	5.5%	4.9%
█ average	28.6%	25.9%
█ good	53.6%	57.8%
█ very good	5.5%	7.1%

Wales houses by main heating energy efficiency

Main heat efficiency	Wales	England & Wales
█ very poor	2.6%	1.8%
█ poor	4.0%	2.3%
█ average	13.2%	8.5%
█ good	77.9%	84.5%
█ very good	2.4%	2.9%

Wales houses by walls energy efficiency

Walls efficiency	Wales	England & Wales
█ very poor	27.3%	22.5%
█ poor	17.4%	16.7%
█ average	11.5%	15.1%
█ good	36.5%	37.2%
█ very good	7.3%	8.5%

Wales houses by windows energy efficiency

Windows efficiency	Wales	England & Wales
█ very poor	3.2%	3.5%
█ poor	4.6%	4.9%
█ average	54.8%	55.1%
█ good	31.4%	29.2%
█ very good	6.1%	7.3%

Wales houses by hot water heating energy efficiency

Hot water heating energy efficiency	Wales	England & Wales
█ very poor	5.5%	3.7%
█ poor	8.6%	6.1%
█ average	14.6%	12.6%
█ good	67.8%	73.5%
█ very good	3.5%	4.0%

Wales houses by lighting energy efficiency

Lightning energy efficiency	Wales	England & Wales
█ very poor	10.4%	10.3%
█ poor	8.5%	7.9%
█ average	13.7%	13.0%
█ good	17.5%	17.0%
█ very good	50.0%	51.8%

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