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CBECS Home Page
1992 CBECS Detailed Tables
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Description of Detailed Tables -- 1992
Column Categories
Row Categories
The first set of detailed tables for the
1992 CBECS, Tables A1 through A70, contain the number of buildings and
amount of floorspace for major building characteristics. Tables A2 through
A28 address location, building size, year constructed, number of workers,
hours of operation, types of occupancy, multibuilding facilities, and
special space functions. Tables A29 through A43 contain data about the
energy sources used for all end uses and for specific major end uses.
Tables A44 through A46 contain data about percent of floorspace heated,
cooled, and lit. Tables A47 through A56 contain data on energy-using equipment
types, and Tables A57 through A67 contain data on conservation and energy
management features. The last group of building characteristics tables
include special data tabulations. Table A1 is a summary table, Table A68
provides total number of buildings and amount of floorspace for all principal
building activities, and Tables A69 and A70 contain data on energy sources
used for selected energy uses.
The second set of tables consists of energy consumption and expenditures
Tables 3.1 through 3.49, which present detailed energy consumption and
expenditure data for buildings in the commercial sector. These tables
are grouped into major fuel tables (Tables 3.1 through 3.13) and specific
energy source tables. The specific energy source tables consist of Tables
3.14 through 3.29 for electricity, Tables 3.30 through 3.40 for natural
gas, Tables 3.41 through 3.45 for fuel oil, and Tables 3.46 and 3.47 for
district heat.
The third set of tables consists of energy end-use Tables 1 through 6,
which contain estimates of the amount of natural gas and electricity that
is consumed for nine specific end uses: space heating, cooling, ventilation,
water heating, lighting, cooking, refrigeration, office equipment, and
other.
Column Categories
The column categories most commonly classify
data by consumption and expenditures, though several other classifications
are also given. The following terms, listed in alphabetical order, attempt
to explain some of the column categories that may require clarification.
Conditional Energy Intensity—The amount of electricity, natural
gas, fuel oil, or district heat used per square foot in buildings using
the specified energy source. For example, in Table 3.16, data in the row
labeled “Electricity” under “Energy Sources” and in
the column labeled “Northeast” under “Electricity Energy
Intensity” would read: “Buildings in the Northeast that used
electricity as an energy source used 9.3 kilowatthours of electricity
per square foot.”
Demand-Metered Buildings—Buildings that have meters to measure
peak demand (in addition to total consumption) during a billing period.
Peak demand is usually metered only for electricity.
Distribution of Building-Level Intensities—The amount of energy
used per square foot, divided into three percentiles: 25th, median, and
75th. In Table 3.15, for example, the row labeled “Education”
under “Principal Building Activity” in the columns under “Distribution
of Building-Level Intensities” would read: “In 1992, 25 percent
of U.S. education buildings used 4.0 kilowatthours per square foot or
less, while 75 percent of the buildings used more than 4.0 kilowatthours
of electricity per square foot.”
Electricity—Site electricity. (See “site electricity”
and “primary electricity” in this listing.)
Energy Intensity—Usually defined as “gross energy intensity”
or “conditional energy intensity” in title of table. If table
title does not specify, “energy intensity” is to be defined
as “conditional energy intensity.”
Floorspace—The enclosed area in a building; the sum of the
floorspace in all buildings in a category.
Gross Energy Intensity—The ratio of the total amount of energy
consumed by a group of buildings to the total floorspace of those buildings,
including buildings and floorspace where the energy source is not used.
For example, in Table 3.7, data in the row category “Education”
under “Principal Building Activity” and in the column category
of “Northeast” would read: “Education buildings in the
Northeast consumed 87.1 thousand Btu per square foot.”
Major Fuel—Major energy sources: electricity, natural gas,
fuel oil, and district heat (district steam and district hot water). Although
electricity is technically not a fuel, “Major Fuel,” rather
than “Major Energy Source,” was retained as the title of this
category to facilitate comparison of 1992 and 1989 CBECS data.
Primary Electricity—Site electricity plus the conversion losses
in the electric generation process at the utility plant. Most of the tables
present statistics for site consumption alone, but Tables 3.2 and 3.14
also provide consumption statistics for primary electricity.
Site Electricity—The amount of electricity delivered to the
commercial building. This amount excludes conversion losses in the electric
generation process at the utility plant. (See “primary electricity”
in this listing.) Most of the tables in this section provide statistics
for site electricity alone (not on primary electricity). When the term
“electricity” is used, the reference is to site electricity.
Total of Major Fuels—The sum of site electricity, natural
gas, fuel oil, and district heat. Statistics in this column exclude data
from the column “Primary Electricity.”
Row Categories
The row categories classify data by specific
features, such as energy source or end use. Data in the row categories
relate to the buildings having such a feature, not to the feature. For
example, in Table 3.4, the data in the “Major Fuels” column
and the row category “Buildings with A/C” is to be read as “Buildings
with air conditioning consumed 5,345 trillion Btu of the major fuels.”
The table contains no data on the energy consumption for air conditioning
specifically. Although the row categories and subcategories are similar
in all the tables, the specific-fuel tables provide more categories of
data than are presented in the major fuel tables. For example, the electricity
tables provide data on buildings containing refrigeration and lighting
equipment and computers.
Below are explanations of some of the row categories, in a consumption
or expenditures column, that may require clarification, listed in the
order in which they occur in the tables.
All Buildings—Consumption or expenditures for roofed and walled
structures whose principal activities are nonresidential, nonagricultural,
and nonindustrial and which are larger than one thousand square feet (roughly
twice the size of a two-car garage).
Principal Building Activity—Consumption or expenditures for
buildings grouped by the activity that occupies the most floorspace in
the buildings. Some building types are combined in the tables. For example,
inpatient and outpatient health care facilities were combined as “health
care buildings,” and refrigerated and nonrefrigerated warehouses
were combined as “warehouses,” and skilled nursing buildings
were included in “lodging.” The category “assembly”
in the 1989 CBECS was broken into “public assembly” and “religious
worship” for the 1992 CBECS. See “Description
of types of buildings” for a full description of the principal
building activity categories.
Climate Zone—Consumption or expenditures for commercial buildings
located in one of the five U.S. climate zones, based on the average number
of cooling degree-days (CDD) and heating degree-days (HDD) in a 45-year
period (1931-1975). See “U.S. Climate
Zones map” for a map that shows the five U.S. climate zones.
Census Region and Division—Consumption or expenditures for
commercial buildings located in one of the nine divisions within four
regions as defined by the U.S. Bureau of Census. See “Census
Regions and Divisions map” for a map that shows the four Census
regions and nine Census divisions.
Energy Sources—Consumption or expenditures for buildings using
a specific type of energy (electricity, natural gas, fuel oil, district
heat [district steam and district hot water], district chilled water,
propane, and any other type of energy [wood, coal, active solar, and photovoltaic
cells]). The tables contain consumption data based on billing information
obtained from energy suppliers, for the first four sources only. Estimates
of the amount of wood burned in buildings were obtained during the personal
interviews with building respondents. No consumption data were collected
for propane, coal, solar energy, or other renewable sources because such
a collection effort would not be feasible.
Energy End Uses—Consumption or expenditures in buildings that
had specific end uses (heating, air conditioning, water heating, cooking,
and manufacturing), not the amount of energy consumption or expenditures
for a particular end use.
Energy-Related Space Functions—Consumption or expenditures
in buildings that had space for commercial food preparation or computer
use, space using special ventilation, or space where activities requiring
large amounts of hot water took place. The tables contain no data on the
amount of energy consumption or expenditures for these specific activities.
Space-Heating Energy Sources—Consumption or expenditures in
buildings using at least one of the major fuels, propane, wood, or any
other energy source for space heating. (In some tables, this category
is subdivided into “Main and Secondary Energy Sources.”) The
tables contain no data on the amount of energy consumption or expenditures
for space heating specifically.
Main Space-Heating Energy Source—Consumption or expenditures
in buildings using a specific energy source to heat most of the square
footage in the building most of the time. The tables contain no data on
the amount of energy consumption or expenditures for space heating specifically.
Replacement Energy Source for Main Heating—Consumption or
expenditures in buildings using a replacement energy source (a heating
source to which a building could switch within one week without major
modifications to the main heating equipment, without substantially reducing
the area heated, and without substantially reducing the temperature maintained
in the heated area). The tables contain no data on the amount of energy
consumption or expenditures for replacement heating specifically.
Cooling Energy Source—Consumption or expenditures in buildings
using electricity, natural gas, or district chilled water for cooling.
The tables contain no data on the amount of energy consumption or expenditures
for cooling specifically.
Water-Heating Energy Source—Consumption or expenditures in
buildings using one of the major fuels or propane for water heating. The
tables contain no data on the amount of energy consumption or expenditures
for water heating specifically.
Cooking Energy Source—Consumption or expenditures in buildings
using electricity, natural gas, or propane for cooking. The tables contain
no data on the amount of energy consumption or expenditures for cooking
specifically.
Manufacturing Energy Sources—Consumption or expenditures in
buildings using electricity, natural gas, or other energy source for manufacturing.
The tables contain no data on the amount of energy consumption or expenditures
for manufacturing specifically.
Heating Equipment—Consumption or expenditures in buildings
that had at least one type of heating equipment. The tables contain no
data on the amount of energy consumption or expenditures for the specific
types of heating equipment.
Heating Distribution Equipment—Consumption or expenditures
in buildings that had at least one type of heating-distribution equipment.
The tables contain no data on the amount of energy consumption or expenditures
for the specific types of heating-distribution equipment.
Cooling Equipment—Consumption or expenditures in buildings
that had at least one type of cooling equipment. The tables contain no
data on the amount of energy consumption or expenditures for the specific
types of cooling equipment.
Cooling Distribution Equipment—Consumption or expenditures
in buildings that had at least one type of cooling-distribution equipment.
The tables contain no data on the amount of energy consumption or expenditures
for the specific types of cooling-distribution equipment.
Water-Heating Equipment—Consumption or expenditures in buildings
that had a centralized system, a distributed system, or both. The tables
contain no data on the amount of energy consumption or expenditures for
the specific types of water-heating equipment.
Energy Conservation Features—Consumption or expenditures in
buildings that had any feature designed to reduce the amount of energy
consumed by the building because of its:
Shell, such as insulation, storm windows, or tinted glass;
Heating, ventilation, and air conditioning (HVAC) equipment, such as a variable air-volume system, economizer cycle, or regular maintenance; or
Lighting, such as manual dimmer switches, specular reflectors, or occupancy sensors.
More detailed data are also given for buildings having at least one of the specific energy-conservation features.
Energy Management Practices—Consumption or expenditures in buildings with at least one energy-management practice, including having an energy management and control system, participating in a demand-side management program, having had an energy audit, or employing a building energy manager.
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Return to 1992 CBECS Detailed Tables
Specific questions on these topics may be directed to:
Joelle Michaels
joelle.michaels@eia.doe.gov
CBECS Manager
Phone: (202) 586-8952
FAX: (202) 586-0018
URL: http://www.eia.doe.gov/emeu/cbecs/data_categories_92.html
File last modified November 16, 1999
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