2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Total Heating System Stock (thousands) | 3,147.2 | 3,171.5 | 3,206.1 | 3,249.4 | 3,300.3 | 3,350.6 | 3,400.3 | 3,449.6 | 3,497.0 | 3,540.0 | 3,584.0 | 3,626.3 | |
Heating System Stock by Building Type (thousands) | |||||||||||||
Single Detached | 1,443.8 | 1,458.5 | 1,480.8 | 1,504.7 | 1,531.5 | 1,552.7 | 1,572.9 | 1,593.1 | 1,610.7 | 1,625.7 | 1,642.6 | 1,656.4 | |
Single Attached | 236.6 | 238.7 | 241.2 | 244.3 | 248.0 | 254.2 | 260.9 | 266.9 | 273.3 | 280.0 | 286.0 | 291.8 | |
Apartments | 1,426.5 | 1,434.1 | 1,443.7 | 1,459.6 | 1,479.6 | 1,502.1 | 1,524.6 | 1,547.2 | 1,570.2 | 1,591.2 | 1,611.9 | 1,634.1 | |
Mobile Homes | 40.4 | 40.3 | 40.5 | 40.8 | 41.3 | 41.5 | 42.0 | 42.4 | 42.8 | 43.2 | 43.6 | 43.9 | |
Shares (%) | |||||||||||||
Single Detached | 45.9 | 46.0 | 46.2 | 46.3 | 46.4 | 46.3 | 46.3 | 46.2 | 46.1 | 45.9 | 45.8 | 45.7 | |
Single Attached | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.6 | 7.7 | 7.7 | 7.8 | 7.9 | 8.0 | 8.0 | |
Apartments | 45.3 | 45.2 | 45.0 | 44.9 | 44.8 | 44.8 | 44.8 | 44.9 | 44.9 | 44.9 | 45.0 | 45.1 | |
Mobile Homes | 1.3 | 1.3 | 1.3 | 1.3 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | |
Heating System Stock by Heating System Type (thousands) | |||||||||||||
Heating Oil – Normal Efficiency | 74.0 | 59.1 | 37.7 | 22.5 | 7.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 313.1 | 320.9 | 338.2 | 338.2 | 338.6 | 336.1 | 332.2 | 328.0 | 325.3 | 322.6 | 319.8 | 316.6 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 123.4 | 120.9 | 111.4 | 101.7 | 89.1 | 75.3 | 60.8 | 46.4 | 33.2 | 20.9 | 10.8 | 5.8 | |
Natural Gas – Medium Efficiency | 17.2 | 17.7 | 18.3 | 20.3 | 23.5 | 25.6 | 27.4 | 28.2 | 28.8 | 28.9 | 28.2 | 27.1 | |
Natural Gas – High Efficiency | 22.9 | 23.7 | 25.1 | 30.2 | 40.4 | 49.7 | 60.9 | 77.6 | 89.1 | 101.3 | 114.5 | 126.2 | |
Electric | 1,762.3 | 1,787.0 | 1,824.5 | 1,874.1 | 1,923.3 | 1,974.2 | 2,030.6 | 2,078.2 | 2,121.1 | 2,157.4 | 2,194.9 | 2,228.9 | |
Heat Pump | 136.9 | 142.2 | 147.9 | 154.0 | 160.4 | 166.3 | 171.8 | 177.2 | 182.9 | 188.7 | 194.0 | 198.9 | |
Other1 | 4.2 | 4.2 | 4.2 | 4.1 | 4.2 | 4.3 | 4.5 | 4.8 | 5.2 | 5.7 | 6.3 | 7.0 | |
Wood | 131.5 | 125.4 | 121.0 | 119.4 | 120.9 | 120.3 | 108.4 | 101.0 | 96.1 | 92.6 | 88.1 | 83.8 | |
Dual Systems | |||||||||||||
Wood/Electric | 345.9 | 349.6 | 352.2 | 355.0 | 357.8 | 360.2 | 361.9 | 363.3 | 366.1 | 368.8 | 370.8 | 372.1 | |
Wood/Heating Oil | 91.9 | 92.9 | 93.6 | 94.4 | 95.2 | 95.8 | 96.3 | 96.6 | 97.4 | 98.1 | 98.7 | 99.0 | |
Natural Gas/Electric | 13.3 | 13.8 | 14.4 | 14.9 | 15.4 | 15.8 | 16.2 | 16.5 | 17.0 | 17.4 | 17.8 | 18.1 | |
Heating Oil/Electric | 110.5 | 114.2 | 117.5 | 120.7 | 123.9 | 126.9 | 129.5 | 131.9 | 134.8 | 137.6 | 140.2 | 142.6 | |
Shares (%) | |||||||||||||
Heating Oil – Normal Efficiency | 2.4 | 1.9 | 1.2 | 0.7 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 9.9 | 10.1 | 10.5 | 10.4 | 10.3 | 10.0 | 9.8 | 9.5 | 9.3 | 9.1 | 8.9 | 8.7 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 3.9 | 3.8 | 3.5 | 3.1 | 2.7 | 2.2 | 1.8 | 1.3 | 1.0 | 0.6 | 0.3 | 0.2 | |
Natural Gas – Medium Efficiency | 0.5 | 0.6 | 0.6 | 0.6 | 0.7 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.7 | |
Natural Gas – High Efficiency | 0.7 | 0.7 | 0.8 | 0.9 | 1.2 | 1.5 | 1.8 | 2.2 | 2.5 | 2.9 | 3.2 | 3.5 | |
Electric | 56.0 | 56.3 | 56.9 | 57.7 | 58.3 | 58.9 | 59.7 | 60.2 | 60.7 | 60.9 | 61.2 | 61.5 | |
Heat Pump | 4.3 | 4.5 | 4.6 | 4.7 | 4.9 | 5.0 | 5.1 | 5.1 | 5.2 | 5.3 | 5.4 | 5.5 | |
Other1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | |
Wood | 4.2 | 4.0 | 3.8 | 3.7 | 3.7 | 3.6 | 3.2 | 2.9 | 2.7 | 2.6 | 2.5 | 2.3 | |
Dual Systems | |||||||||||||
Wood/Electric | 11.0 | 11.0 | 11.0 | 10.9 | 10.8 | 10.7 | 10.6 | 10.5 | 10.5 | 10.4 | 10.3 | 10.3 | |
Wood/Heating Oil | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.7 | |
Natural Gas/Electric | 0.4 | 0.4 | 0.4 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | |
Heating Oil/Electric | 3.5 | 3.6 | 3.7 | 3.7 | 3.8 | 3.8 | 3.8 | 3.8 | 3.9 | 3.9 | 3.9 | 3.9 |