| Main dwellings in buildings destined mainly for dwellings with some type of heating method according to year of construction of the building (grouped) by fuel used . 32-Ourense |
| TOTAL | Before 1900 | 1900-1920 | 1921-1940 | 1941-1950 | 1951-1960 | 1961-1970 | 1971-1980 | 1981-1990 | 1991-2001 | |||
| TOTAL | 98488 | 8442 | 4149 | 4811 | 4780 | 8161 | 14798 | 23534 | 16123 | 13690 | ||
| 15,82% | 10,91% | 12,17% | 15,44% | 14,14% | 15,27% | 20,21% | 19,17% | 12,07% | 14,88% | |||
| Gas | ||||||||||||
| Electricity | 23,40% | 22,98% | 22,37% | 25,07% | 23,91% | 26,74% | 27,87% | 23,45% | 20,68% | 19,50% | ||
| Petroleum or derivatives | 43,52% | 27,34% | 32,61% | 33,55% | 36,80% | 37,92% | 38,76% | 45,27% | 53,36% | 56,54% | ||
| Wood | 1,52% | 0,63% | 0,92% | 1,12% | 1,80% | 1,90% | 1,77% | 1,75% | 2,11% | 0,66% | ||
| Coal or derivatives | 15,38% | 37,74% | 31,53% | 24,40% | 22,91% | 17,80% | 11,04% | 9,91% | 11,49% | 8,09% | ||
| Others | 0,37% | 0,40% | 0,41% | 0,42% | 0,44% | 0,37% | 0,35% | 0,44% | 0,29% | 0,31% | ||