Industries in the Utilities subsector provide electric power, natural gas, steam supply, water supply, and sewage removal through a permanent infrastructure of lines, mains, and pipes. Establishments are grouped together based on the utility service provided and the particular system or facilities required to perform the service.
This industry group comprises establishments primarily engaged in generating, transmitting, and/or distributing electric power. Establishments in this industry group may perform one or more of the following activities: (1) operate generation facilities that produce electric energy; (2) operate transmission systems that convey the electricity from the generation facility to the distribution system; and (3) operate distribution systems that convey electric power received from the generation facility or the transmission system to the final consumer.
This industry comprises establishments primarily engaged in operating electric power generation facilities. These facilities convert other forms of energy, such as water power (i.e., hydroelectric), fossil fuels, nuclear power, and solar power, into electrical energy. The establishments in this industry produce electric energy and provide electricity to transmission systems or to electric power distribution systems.
Cross-References. Establishments primarily engaged in operating trash incinerators that also generate electricity are classified in Industry 56221, Waste Treatment and Disposal.
This U.S. industry comprises establishments primarily engaged in operating hydroelectric power generation facilities. These facilities use water power to drive a turbine and produce electric energy. The electric energy produced in these establishments is provided to electric power transmission systems or to electric power distribution systems.
| Go to: | No change 2002 to 2007 | No change 1997 to 2002 | 2002 Economic Census and other data sources |
| 2007 NAICS | 2002 NAICS | 1997 NAICS |
Corresponding Index Entries |
|---|---|---|---|
| 221111 | 221111 | 221111 | Electric power generation, hydroelectric |
| 221111 | 221111 | 221111 | Hydroelectric power generation |
| 221111 | 221111 | 221111 | Power generation, hydroelectric |
This U.S. industry comprises establishments primarily engaged in operating fossil fuel powered electric power generation facilities. These facilities use fossil fuels, such as coal, oil, or gas, in internal combustion or combustion turbine conventional steam process to produce electric energy. The electric energy produced in these establishments is provided to electric power transmission systems or to electric power distribution systems.
| Go to: | No change 2002 to 2007 | No change 1997 to 2002 | 2002 Economic Census and other data sources |
| 2007 NAICS | 2002 NAICS | 1997 NAICS |
Corresponding Index Entries |
|---|---|---|---|
| 221112 | 221112 | 221112 | Electric power generation, fossil fuel (e.g., coal, oil, gas) |
| 221112 | 221112 | 221112 | Power generation, fossil fuel (e.g., coal, gas, oil), electric |
This U.S. industry comprises establishments primarily engaged in operating nuclear electric power generation facilities. These facilities use nuclear power to produce electric energy. The electric energy produced in these establishments is provided to electric power transmission systems or to electric power distribution systems.
| Go to: | No change 2002 to 2007 | No change 1997 to 2002 | 2002 Economic Census and other data sources |
| 2007 NAICS | 2002 NAICS | 1997 NAICS |
Corresponding Index Entries |
|---|---|---|---|
| 221113 | 221113 | 221113 | Electric power generation, nuclear |
| 221113 | 221113 | 221113 | Power generation, nuclear electric |
This U.S. industry comprises establishments primarily engaged in operating electric power generation facilities (except hydroelectric, fossil fuel, nuclear). These facilities convert other forms of energy, such as solar, wind, or tidal power, into electrical energy. The electric energy produced in these establishments is provided to electric power transmission systems or to electric power distribution systems.
Cross-References. Establishments primarily engaged in--
| Go to: | No change 2002 to 2007 | No change 1997 to 2002 | 2002 Economic Census and other data sources |
| 2007 NAICS | 2002 NAICS | 1997 NAICS |
Corresponding Index Entries |
|---|---|---|---|
| 221119 | 221119 | 221119 | Electric power generation, (except fossil fuel, hydroelectric, nuclear) |
| 221119 | 221119 | 221119 | Electric power generation, solar |
| 221119 | 221119 | 221119 | Electric power generation, tidal |
| 221119 | 221119 | 221119 | Electric power generation, wind |
| 221119 | 221119 | 221119 | Power generation, electric (except fossil fuel, hydroelectric, nonhazardous solid waste, nuclear) |
| 221119 | 221119 | 221119 | Power generation, solar electric |
| 221119 | 221119 | 221119 | Power generation, tidal electric |
| 221119 | 221119 | 221119 | Power generation, wind electric |
This industry comprises establishments primarily engaged in operating electric power transmission systems, controlling (i.e., regulating voltages) the transmission of electricity, and/or distributing electricity. The transmission system includes lines and transformer stations. These establishments arrange, facilitate, or coordinate the transmission of electricity from the generating source to the distribution centers, other electric utilities, or final consumers. The distribution system consists of lines, poles, meters, and wiring that deliver the electricity to final consumers.
Cross-References. Establishments primarily engaged in generating electric energy are classified in Industry 22111, Electric Power Generation.
This U.S. industry comprises establishments primarily engaged in operating electric power transmission systems and/or controlling (i.e., regulatory voltage) the transmission of electricity from the generating source to distribution centers or other electric utilities. The transmission system includes lines and transformer stations.
Cross-References. Establishments primarily engaged in--
| Go to: | No change 2002 to 2007 | No change 1997 to 2002 | 2002 Economic Census and other data sources |
| 2007 NAICS | 2002 NAICS | 1997 NAICS |
Corresponding Index Entries |
|---|---|---|---|
| 221121 | 221121 | 221121 | Electric power control |
| 221121 | 221121 | 221121 | Electric power transmission systems |
| 221121 | 221121 | 221121 | Transmission of electric power |
This U.S. industry comprises electric power establishments primarily engaged in either (1) operating electric power distribution systems (i.e., consisting of lines, poles, meters, and wiring) or (2) operating as electric power brokers or agents that arrange the sale of electricity via power distribution systems operated by others.
Cross-References. Establishments primarily engaged in--
| Go to: | No change 2002 to 2007 | No change 1997 to 2002 | 2002 Economic Census and other data sources |
| 2007 NAICS | 2002 NAICS | 1997 NAICS |
Corresponding Index Entries |
|---|---|---|---|
| 221122 | 221122 | 221122 | Distribution of electric power |
| 221122 | 221122 | 221122 | Electric power brokers |
| 221122 | 221122 | 221122 | Electric power distribution systems |
See industry description for 221210 below.
This industry comprises: (1) establishments primarily engaged in operating gas distribution systems (e.g., mains, meters); (2) establishments known as gas marketers that buy gas from the well and sell it to a distribution system; (3) establishments known as gas brokers or agents that arrange the sale of gas over gas distribution systems operated by others; and (4) establishments primarily engaged in transmitting and distributing gas to final consumers.
Cross-References. Establishments primarily engaged in--
| Go to: | No change 2002 to 2007 | No change 1997 to 2002 | 2002 Economic Census and other data sources |
| 2007 NAICS | 2002 NAICS | 1997 NAICS |
Corresponding Index Entries |
|---|---|---|---|
| 221210 | 221210 | 221210 | Blue gas, carbureted, production and distribution |
| 221210 | 221210 | 221210 | Coke oven gas, production and distribution |
| 221210 | 221210 | 221210 | Distribution of manufactured gas |
| 221210 | 221210 | 221210 | Distribution of natural gas |
| 221210 | 221210 | 221210 | Gas, manufactured, production and distribution |
| 221210 | 221210 | 221210 | Gas, mixed natural and manufactured, production and distribution |
| 221210 | 221210 | 221210 | Gas, natural, distribution |
| 221210 | 221210 | 221210 | Liquefied petroleum gas (LPG) distribution through mains |
| 221210 | 221210 | 221210 | Manufactured gas production and distribution |
| 221210 | 221210 | 221210 | Natural gas brokers |
| 221210 | 221210 | 221210 | Natural gas distribution systems |
| 221210 | 221210 | 221210 | Natural gas marketers |
See industry description for 221310 below.
This industry comprises establishments primarily engaged in operating water treatment plants and/or operating water supply systems. The water supply system may include pumping stations, aqueducts, and/or distribution mains. The water may be used for drinking, irrigation, or other uses.
| Go to: | No change 2002 to 2007 | No change 1997 to 2002 | 2002 Economic Census and other data sources |
| 2007 NAICS | 2002 NAICS | 1997 NAICS |
Corresponding Index Entries |
|---|---|---|---|
| 221310 | 221310 | 221310 | Canal, irrigation |
| 221310 | 221310 | 221310 | Filtration plant, water |
| 221310 | 221310 | 221310 | Impounding reservoirs, irrigation |
| 221310 | 221310 | 221310 | Irrigation system operation |
| 221310 | 221310 | 221310 | Water distribution (except irrigation) |
| 221310 | 221310 | 221310 | Water distribution for irrigation |
| 221310 | 221310 | 221310 | Water filtration plant operation |
| 221310 | 221310 | 221310 | Water supply systems |
| 221310 | 221310 | 221310 | Water treatment and distribution |
| 221310 | 221310 | 221310 | Water treatment plants |
See industry description for 221320 below.
This industry comprises establishments primarily engaged in operating sewer systems or sewage treatment facilities that collect, treat, and dispose of waste.
Cross-References. Establishments primarily engaged in--
| Go to: | No change 2002 to 2007 | No change 1997 to 2002 | 2002 Economic Census and other data sources |
| 2007 NAICS | 2002 NAICS | 1997 NAICS |
Corresponding Index Entries |
|---|---|---|---|
| 221320 | 221320 | 221320 | Collection, treatment, and disposal of waste through a sewer system |
| 221320 | 221320 | 221320 | Sewage disposal plants |
| 221320 | 221320 | 221320 | Sewage treatment plants or facilities |
| 221320 | 221320 | 221320 | Sewer systems |
| 221320 | 221320 | 221320 | Waste collection, treatment, and disposal through a sewer system |
See industry description for 221330 below.
This industry comprises establishments primarily engaged in providing steam, heated air, or cooled air. The steam distribution may be through mains.
| Go to: | No change 2002 to 2007 | No change 1997 to 2002 | 2002 Economic Census and other data sources |
| 2007 NAICS | 2002 NAICS | 1997 NAICS |
Corresponding Index Entries |
|---|---|---|---|
| 221330 | 221330 | 221330 | Air-conditioning supply |
| 221330 | 221330 | 221330 | Cooled air distribution |
| 221330 | 221330 | 221330 | Distribution of cooled air |
| 221330 | 221330 | 221330 | Distribution of heated air |
| 221330 | 221330 | 221330 | Distribution of steam heat |
| 221330 | 221330 | 221330 | Geothermal steam production |
| 221330 | 221330 | 221330 | Heat, steam, distribution |
| 221330 | 221330 | 221330 | Heated air distribution |
| 221330 | 221330 | 221330 | Heating steam (suppliers of heat) providers |
| 221330 | 221330 | 221330 | Steam heat distribution |
| 221330 | 221330 | 221330 | Steam heating systems (i.e., suppliers of heat) |
| 221330 | 221330 | 221330 | Steam production and distribution |
| 221330 | 221330 | 221330 | Steam supply systems, including geothermal |
