Cardiff flat energy costs

January 2026

The average yearly heating cost per flat was £401 in the last 10 years in Cardiff postcode area. This is by £22.5 less than the average cost in England and Wales in the same period. On average, the heating cost could be reduced by 25.7% to £298.

Cardiff flats by heating cost per square meters

Heating cost per 10m² per year	Cardiff	England & Wales
█ £0-£39.99	22.1%	22.2%
█ £40+	16.9%	16.2%
█ £55+	18.5%	16.6%
█ £70+	16.6%	16.7%
█ £90+	13.2%	14.2%
█ £120+	12.7%	14.1%

Cardiff flats by hot water cost per square meters

Hot water cost per 10m² per year	Cardiff	England & Wales
█ £0-£9.99	2.3%	3.3%
█ £10.0+	7.5%	8.7%
█ £12.5+	15.1%	14.4%
█ £15.0+	24.3%	21.5%
█ £20.0+	18.7%	19.1%
█ £30.0+	32.1%	32.9%

Cardiff flats by lighting cost per square meters

Lighting cost per 10m² per year	Cardiff	England & Wales
█ £0-£4.99	0.6%	0.6%
█ £5+	8.1%	10.8%
█ £7+	18.7%	19.0%
█ £8.50+	23.0%	21.2%
█ £10.00+	23.9%	23.1%
█ £12.50+	25.8%	25.3%

Cardiff flats by heating cost per room

Heating cost per habitable room	Cardiff	England & Wales
█ £0-£99.99	24.3%	21.7%
█ £100+	15.3%	14.2%
█ £125+	15.1%	13.8%
█ £150+	19.7%	20.3%
█ £200+	10.4%	11.7%
█ £250+	15.1%	18.3%

Cardiff flats by hot water cost per room

Hot water cost per habitable room	Cardiff	England & Wales
█ £0-£18.99	1.5%	1.4%
█ £19+	6.7%	6.6%
█ £25+	17.3%	15.7%
█ £32+	27.5%	24.4%
█ £45+	13.5%	15.0%
█ £60+	33.5%	36.8%

Cardiff flats by lighting cost per room

Lighting cost per habitable room	Cardiff	England & Wales
█ £0-£10.99	2.8%	2.5%
█ £11+	8.0%	7.4%
█ £14+	13.3%	12.9%
█ £17+	15.5%	15.6%
█ £20+	19.2%	18.9%
█ £24+	41.2%	42.7%

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