Off the gas grid
In 2024, 287,576 properties Welsh domestic properties had no gas connection: 19.46% of all of them. Source. That is fifth of the eleven nations and regions of Great Britain (the South West is highest). It is a count of properties without a gas meter, so it includes second homes and empty properties; it is not a count of occupied households. The first version of this site said the highest rate in Britain, which was wrong.
What is true is that Ceredigion, at 74.61%, has the highest share of any mainland local authority in Great Britain. These are the areas where bottled gas, oil and electricity heat homes, and where farm slurry could be a local fuel.
| Local authority | Share off gas | Properties |
|---|---|---|
| Ceredigion | 74.61% | 26,918 |
| Powys | 55.58% | 36,886 |
| Isle of Anglesey | 52.59% | 18,833 |
| Gwynedd | 48.77% | 30,142 |
| Pembrokeshire | 41.28% | 25,944 |
| Carmarthenshire | 39.37% | 35,409 |
| Monmouthshire | 25.03% | 11,016 |
| Denbighshire | 24.10% | 11,182 |
| Conwy | 18.29% | 10,643 |
| Flintshire | 17.12% | 12,210 |
| Wrexham | 14.88% | 9,180 |
| Cardiff | 13.60% | 22,512 |
| Vale of Glamorgan | 10.24% | 6,349 |
| Swansea | 9.86% | 11,379 |
| Neath Port Talbot | 6.98% | 4,690 |
| Newport | 6.37% | 4,536 |
| Bridgend | 3.58% | 2,366 |
| Merthyr Tydfil | 2.66% | 734 |
| Torfaen | 2.62% | 1,132 |
| Blaenau Gwent | 2.59% | 859 |
| Caerphilly | 2.47% | 1,995 |
| Rhondda Cynon Taf | 2.39% | 2,671 |
| Wales | 19.46% | 287,576 |
Source: DESNZ, Subnational estimates of properties not connected to the gas network, 2015-2024, published 18 December 2025, sheet "2024".