Released: Dec 2006
Next CBECS will be conducted in 2007


Table C12A.  Consumption and Gross Energy Intensity by Year Constructed for Sum of Major Fuels for All Buildings, 2003
  Sum of Major Fuel
Consumption
(trillion Btu)
Total Floorspace
of Buildings
(million square feet)
Energy Intensity for
Sum of Major Fuels
 (thousand Btu/square foot)
1959 or Before 1960 to
1989
1990 to
2003
1959 or Before 1960 to
1989
1990 to
2003
1959 or Before 1960 to
1989
1990 to
2003
All Buildings ............................... 1,522 3,228 1,772 18,031 33,384 20,243 84.4 96.7 87.6
Building Floorspace
(Square Feet)
1,001 to 5,000 .............................. 193 300 193 2,168 2,904 1,850 89.0 103.2 104.2
5,001 to 10,000 ............................ 134 263 165 2,032 3,217 1,784 66.0 81.9 92.5
10,001 to 25,000 .......................... 241 432 226 3,273 5,679 3,707 73.6 76.1 60.9
25,001 to 50,000 .......................... 181 370 191 2,517 4,518 2,347 71.8 81.8 81.5
50,001 to 100,000 ........................ 156 473 285 2,095 4,763 3,433 74.3 99.3 82.9
100,001 to 200,000 ...................... 219 523 323 2,161 4,706 3,350 101.1 111.1 96.5
200,001 to 500,000 ...................... 221 371 160 2,179 3,623 1,692 101.4 102.3 94.3
Over 500,000 ............................... 179 497 Q 1,606 3,974 2,080 111.2 125.0 Q
Principal Building Activity
Education ...................................... 248 385 187 3,191 4,359 2,324 77.6 88.4 80.6
Food Sales ................................... Q 116 Q 277 587 391 Q 197.0 Q
Food Service ................................ 89 152 187 613 524 517 144.4 290.1 361.2
Health Care ................................... 130 361 103 730 1,671 762 177.7 215.8 135.7
  Inpatient ...................................... Q 311 Q 456 1,218 231 Q 255.3 Q
  Outpatient ................................... Q 50 45 273 453 531 Q 109.6 84.4
Lodging ......................................... 109 286 114 1,236 2,564 1,296 Q 111.7 88.1
Mercantile ..................................... 110 549 362 1,372 5,983 3,836 80.4 91.8 94.4
  Retail (Other Than Mall) .............. 76 115 128 1,026 1,804 1,487 73.9 63.5 86.4
  Enclosed and Strip Malls ............ Q 434 234 346 4,179 2,350 Q 103.9 99.5
Office ........................................... 267 641 226 2,852 6,792 2,563 93.6 94.4 88.0
Public Assembly ........................... 90 156 124 1,455 1,450 1,035 62.0 107.6 119.7
Public Order and Safety ............... Q 39 Q Q 385 453 Q 101.3 Q
Religious Worship ......................... 71 53 39 1,522 1,328 904 46.6 39.9 43.3
Service ......................................... 66 168 78 1,057 1,954 1,040 62.8 85.9 74.8
Warehouse and Storage .............. 166 156 134 2,029 4,014 4,034 81.6 38.8 33.3
Other ............................................ Q 142 Q 372 693 673 Q Q Q
Vacant .......................................... Q Q Q 1,073 1,080 415 Q Q Q
Census Region and Division
Northeast ...................................... 539 622 235 6,140 5,448 2,407 87.8 114.1 97.8
  New England .............................. 109 166 Q 1,475 1,339 638 74.0 123.7 Q
  Middle Atlantic ............................ 430 456 166 4,665 4,109 1,769 92.1 111.0 93.7
Midwest ........................................ 558 829 412 5,744 8,197 4,162 97.2 101.1 98.9
  East North Central ...................... 435 616 292 4,121 5,690 2,613 105.5 108.3 111.8
  West North Central ..................... 123 213 120 1,623 2,507 1,550 76.0 84.8 77.3
South ............................................ 265 1,157 843 3,764 12,934 10,041 70.5 89.4 83.9
  South Atlantic ............................. 157 567 517 2,120 6,185 5,694 74.1 91.7 90.8
  East South Central ...................... 42 204 94 605 1,917 1,196 69.8 106.5 78.2
  West South Central .................... 66 385 232 1,038 4,832 3,151 63.7 79.8 73.6
West ............................................. 160 621 282 2,383 6,805 3,632 67.0 91.3 77.7
  Mountain ..................................... 51 295 100 526 2,494 1,187 97.1 118.2 84.5
  Pacific ......................................... 109 326 182 1,857 4,311 2,445 58.5 75.7 74.5
Climate Zone: 30-Year Average
Under 2,000 CDD and --
  More than 7,000 HDD ................. 281 541 264 3,409 5,066 3,054 82.5 106.7 86.5
  5,500-7,000 HDD ........................ 597 942 390 6,188 8,643 3,977 96.5 109.0 98.0
  4,000-5,499 HDD ........................ 388 592 262 4,162 5,628 2,714 93.3 105.2 96.7
  Fewer than 4,000 HDD ............... 191 712 484 3,192 8,630 5,808 59.7 82.4 83.2
2,000 CDD or More and --
  Fewer than 4,000 HDD ............... 65 442 372 1,080 5,418 4,691 60.3 81.5 79.4
Number of Establishments
One ............................................... 1,095 1,929 1,143 12,247 19,473 13,424 89.4 99.0 85.2
2 to 5 ............................................ 253 608 300 3,085 6,096 3,384 81.9 99.8 88.7
6 to 10 .......................................... 45 206 127 511 1,879 968 88.3 109.5 131.5
11 to 20 ........................................ Q 189 84 635 1,819 915 Q 103.8 91.3
More than 20 ................................ Q 279 Q 648 3,239 1,174 Q 86.2 Q
Currently Unoccupied ................... Q Q Q 905 879 Q Q Q Q
Energy Sources (more than
one may apply)
Electricity ...................................... 1,522 3,228 1,772 17,509 32,945 19,727 86.9 98.0 89.8
Natural Gas .................................. 1,115 2,514 1,413 12,407 22,762 13,304 89.8 110.4 106.2
Fuel Oil .......................................... 491 969 407 5,089 7,573 3,603 96.4 127.9 113.0
District Heat .................................. 354 490 Q 2,206 2,330 1,041 160.6 210.4 Q
Energy End Uses (more than
one may apply)
Buildings with Space Heating ....... 1,498 3,154 1,718 16,783 31,413 18,251 89.3 100.4 94.1
Buildings with Cooling .................. 1,263 3,139 1,748 14,196 30,929 18,436 88.9 101.5 94.8
Buildings with Water Heating ....... 1,322 3,114 1,722 14,878 30,250 17,699 88.8 103.0 97.3
See "Guide to the Tables" or "Glossary" for further explanations of the terms used in this table. Both can be accessed from the CBECS web site   http://www.eia.gov/consumption/commercial/.
Q=Data withheld because the Relative Standard Error (RSE) was greater than 50 percent, or fewer than 20 buildings were sampled.
N=No responding cases in sample.
Notes: ● Statistics for the "Energy End Uses" category represent total consumption in buildings that have the end use, not consumption specifically for that particular end use. ● Due to rounding, data may not sum to totals.
Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-871A, C, and E of the 2003 Commercial Buildings Energy Consumption Survey.