Table 2 – Building characteristics, energy use and energy intensity by year of construction, 2014
Year of construction Energy use Energy intensity
PJ QI Share GJ/m2
Before 1920 45.5 B 5.0% 1.17
1920 to 1959 136.0 A 14.9% 1.24
1960 to 1969 127.6 A 13.9% 1.15
1970 to 1979 181.7 A 19.9% 1.19
1980 to 1989 139.4 A 15.2% 1.00
1990 to 1999 135.8 A 14.8% 1.15
2000 to 2009 110.8 A 12.1% 1.17
2010 or later 38.5 B 4.2% 0.99
Canada 915.2 A 100.0% 1.14

Legend:

Quality indicators (QI) classify each estimate according to its quality as follows: A–20% or less, B–between 20% and 30%, C–between 30% and 40%, and F–more than 40%.