2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | ||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Total Single Detached Heating System Stock (thousands) | 886.2 | 892.0 | 898.7 | 906.9 | 916.1 | 925.8 | 937.3 | 948.1 | 956.5 | 963.0 | 970.5 | 977.8 | 983.4 | 990.0 | 995.6 | 1,000.8 | 1,006.6 | 1,013.5 | |
Heating System Stock by Heating System Type (thousands) | |||||||||||||||||||
Heating Oil – Normal Efficiency | 21.6 | 16.3 | 10.9 | 5.5 | 4.8 | 4.4 | 4.1 | 3.6 | 3.5 | 3.1 | 2.8 | 2.1 | 2.3 | 1.7 | 1.7 | 1.6 | 1.4 | 1.0 | |
Heating Oil – Medium Efficiency | 19.7 | 24.3 | 27.2 | 29.1 | 31.8 | 34.2 | 36.5 | 37.4 | 37.4 | 37.7 | 37.9 | 39.4 | 39.3 | 39.9 | 39.5 | 38.9 | 38.3 | 37.6 | |
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 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 213.6 | 196.7 | 178.8 | 160.5 | 139.7 | 119.6 | 99.3 | 81.3 | 64.6 | 46.9 | 33.5 | 21.0 | 9.0 | 0.3 | 0.2 | 0.2 | 0.1 | 0.1 | |
Natural Gas – Medium Efficiency | 162.3 | 173.4 | 187.5 | 202.6 | 215.7 | 227.4 | 238.3 | 247.7 | 252.8 | 257.1 | 255.7 | 253.6 | 250.5 | 244.9 | 235.7 | 224.9 | 213.2 | 200.3 | |
Natural Gas – High Efficiency | 91.0 | 97.8 | 107.3 | 118.0 | 128.2 | 137.9 | 147.4 | 155.7 | 166.8 | 174.6 | 182.8 | 189.5 | 196.2 | 203.4 | 209.7 | 217.0 | 223.7 | 232.9 | |
Electric | 236.1 | 236.9 | 235.9 | 236.1 | 237.6 | 241.3 | 247.5 | 255.2 | 262.1 | 271.9 | 283.5 | 294.9 | 306.2 | 317.5 | 325.8 | 334.2 | 344.1 | 353.7 | |
Heat Pump | 24.8 | 26.1 | 27.3 | 28.6 | 29.7 | 30.9 | 32.3 | 33.5 | 34.6 | 35.7 | 36.9 | 38.2 | 39.3 | 40.4 | 41.1 | 41.9 | 42.8 | 43.9 | |
Other1 | 16.3 | 16.8 | 17.1 | 17.1 | 16.9 | 16.5 | 16.1 | 15.6 | 15.0 | 14.3 | 13.5 | 13.0 | 12.3 | 11.7 | 11.0 | 10.3 | 9.8 | 9.3 | |
Wood | 0.9 | 0.9 | 0.9 | 1.0 | 1.1 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.2 | 1.2 | |
Dual Systems | |||||||||||||||||||
Wood/Electric | 60.4 | 62.1 | 63.6 | 65.1 | 66.3 | 67.3 | 68.5 | 69.7 | 70.6 | 71.8 | 72.9 | 74.1 | 75.2 | 76.3 | 76.6 | 77.1 | 77.8 | 78.6 | |
Wood/Heating Oil | 21.1 | 21.7 | 22.3 | 22.8 | 23.2 | 23.6 | 24.0 | 24.4 | 24.8 | 25.2 | 25.6 | 26.0 | 26.4 | 26.8 | 26.9 | 27.1 | 27.3 | 27.6 | |
Natural Gas/Electric | 12.4 | 12.9 | 13.3 | 13.8 | 14.1 | 14.5 | 14.8 | 15.2 | 15.5 | 15.8 | 16.2 | 16.5 | 16.9 | 17.2 | 17.4 | 17.5 | 17.8 | 18.1 | |
Heating Oil/Electric | 6.0 | 6.2 | 6.5 | 6.8 | 7.0 | 7.2 | 7.4 | 7.6 | 7.8 | 8.0 | 8.2 | 8.4 | 8.7 | 8.9 | 9.0 | 9.1 | 9.2 | 9.4 | |
Shares (%) | |||||||||||||||||||
Heating Oil – Normal Efficiency | 2.4 | 1.8 | 1.2 | 0.6 | 0.5 | 0.5 | 0.4 | 0.4 | 0.4 | 0.3 | 0.3 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | |
Heating Oil – Medium Efficiency | 2.2 | 2.7 | 3.0 | 3.2 | 3.5 | 3.7 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 4.0 | 4.0 | 4.0 | 4.0 | 3.9 | 3.8 | 3.7 | |
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 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 24.1 | 22.0 | 19.9 | 17.7 | 15.3 | 12.9 | 10.6 | 8.6 | 6.8 | 4.9 | 3.4 | 2.2 | 0.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 18.3 | 19.4 | 20.9 | 22.3 | 23.5 | 24.6 | 25.4 | 26.1 | 26.4 | 26.7 | 26.3 | 25.9 | 25.5 | 24.7 | 23.7 | 22.5 | 21.2 | 19.8 | |
Natural Gas – High Efficiency | 10.3 | 11.0 | 11.9 | 13.0 | 14.0 | 14.9 | 15.7 | 16.4 | 17.4 | 18.1 | 18.8 | 19.4 | 20.0 | 20.6 | 21.1 | 21.7 | 22.2 | 23.0 | |
Electric | 26.6 | 26.6 | 26.2 | 26.0 | 25.9 | 26.1 | 26.4 | 26.9 | 27.4 | 28.2 | 29.2 | 30.2 | 31.1 | 32.1 | 32.7 | 33.4 | 34.2 | 34.9 | |
Heat Pump | 2.8 | 2.9 | 3.0 | 3.2 | 3.2 | 3.3 | 3.4 | 3.5 | 3.6 | 3.7 | 3.8 | 3.9 | 4.0 | 4.1 | 4.1 | 4.2 | 4.3 | 4.3 | |
Other1 | 1.8 | 1.9 | 1.9 | 1.9 | 1.8 | 1.8 | 1.7 | 1.6 | 1.6 | 1.5 | 1.4 | 1.3 | 1.3 | 1.2 | 1.1 | 1.0 | 1.0 | 0.9 | |
Wood | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
Dual Systems | |||||||||||||||||||
Wood/Electric | 6.8 | 7.0 | 7.1 | 7.2 | 7.2 | 7.3 | 7.3 | 7.4 | 7.4 | 7.5 | 7.5 | 7.6 | 7.7 | 7.7 | 7.7 | 7.7 | 7.7 | 7.8 | |
Wood/Heating Oil | 2.4 | 2.4 | 2.5 | 2.5 | 2.5 | 2.5 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | |
Natural Gas/Electric | 1.4 | 1.4 | 1.5 | 1.5 | 1.5 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.8 | 1.8 | 1.8 | |
Heating Oil/Electric | 0.7 | 0.7 | 0.7 | 0.7 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 |