Six-Digit NAICS Codes & Titles

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Codes Titles Number of US Businesses
22 Utilities 34,479
221111Hydroelectric Power Generation 54
221112Fossil Fuel Electric Power Generation 148
221113Nuclear Electric Power Generation 31
221114Solar Electric Power Generation 83
221115Wind Electric Power Generation 195
221116Geothermal Electric Power Generation 125
221117Biomass Electric Power Generation 96
221118Other Electric Power Generation 10,707
221121Electric Bulk Power Transmission and Control 286
221122Electric Power Distribution 1,907
221210Natural Gas Distribution 4,005
221310Water Supply and Irrigation Systems 14,310
221320Sewage Treatment Facilities 2,097
221330Steam and Air-Conditioning Supply 435

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