Residential Lighting and Space Cooling Details
  1990   2011 2012 2013 2014 2015
Total Lighting Energy Use1 (PJ)a 49.5   45.8 40.8 38.3 36.7 36.5

Activity
Total Households (thousands)a 9,895   13,551 13,706 13,858 13,989 14,137
Energy Intensity (GJ/Household)a 5.0   3.4 3.0 2.8 2.6 2.6
Heat Loss (PJ)a 20.8   19.1 16.1 16.9 17.2 16.1
Total Space Cooling Energy Use1 (PJ)a 10.0   23.8 27.3 18.8 17.3 22.2

Energy Use by Cooling System Type (PJ)a
Room 2.6   4.0 4.8 3.5 3.4 4.2
Central 7.4   19.9 22.5 15.3 13.8 18.0

Activity
Cooled Floor Space (million m2)a 268   898 952 1016 1078 1157
Energy Intensity (MJ/m2)a 37.2   26.5 28.7 18.5 16.0 19.2
Cooling Degree-Day Indexa,b 1.05   1.51 1.70 1.18 1.11 1.37
Total Cooling System Stock (thousands)a 2,438   7,306 7,694 8,129 8,570 9,123

System Stock by Type (thousands)a
Room 1,067   2,606 2,825 3,053 3,297 3,554
Central 1,371   4,700 4,869 5,076 5,273 5,569

New Unit Efficiencya
Room (EER) 7.1   12.0 12.0 12.0 12.0 12.0
Central (SEER) 9.1   13.0 13.0 13.0 13.0 13.0

Stock Efficiencya
Room (EER) 6.8   10.6 10.8 11.0 11.2 11.3
Central (SEER) 8.6   11.2 11.4 11.6 11.7 11.9

Footnotes:

1) Lighting and space cooling consume only electricity.

Sources:

a) Natural Resources Canada, Residential End-Use Model, Ottawa, 2017.
b) Environment and Climate Change Canada, Climate Summaries, Monthly Values of Degree-Days Above 18.0°C, 1990–2015, Ottawa.