| 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 . 47-Valladolid |
| TOTAL | Before 1900 | 1900-1920 | 1921-1940 | 1941-1950 | 1951-1960 | 1961-1970 | 1971-1980 | 1981-1990 | 1991-2001 | |||
| TOTAL | 166726 | 6784 | 2248 | 2725 | 4768 | 16000 | 37703 | 40085 | 26363 | 30050 | ||
| 57,00% | 22,29% | 25,22% | 30,02% | 39,95% | 54,34% | 66,51% | 56,01% | 48,86% | 70,29% | |||
| Gas | ||||||||||||
| Electricity | 9,69% | 16,47% | 18,02% | 17,87% | 14,53% | 13,43% | 12,25% | 6,76% | 10,35% | 4,17% | ||
| Petroleum or derivatives | 25,85% | 32,89% | 33,90% | 28,22% | 26,74% | 20,12% | 15,31% | 32,21% | 34,95% | 23,12% | ||
| Wood | 4,47% | 21,18% | 17,35% | 17,80% | 12,67% | 6,31% | 2,54% | 2,84% | 3,74% | 1,50% | ||
| Coal or derivatives | 2,13% | 3,97% | 4,14% | 4,77% | 4,03% | 4,81% | 2,67% | 1,42% | 1,29% | 0,60% | ||
| Others | 0,85% | 3,21% | 1,38% | 1,32% | 2,08% | 1,00% | 0,72% | 0,75% | 0,80% | 0,33% | ||