| | | | 213114 | Support Activities for
Metal Mining | Support Activities for
Mining 21311 | Support Activities for
Mining 2131 | Support Activities for
Mining 213 | Mining, Quarrying, and
Oil and Gas Extraction 21 |
| | | | 213115 | Support Activities for
Nonmetallic Minerals
(except Fuels) Mining | Support Activities for
Mining 21311 | Support Activities for
Mining 2131 | Support Activities for
Mining 213 | Mining, Quarrying, and
Oil and Gas Extraction 21 |
| | | | 221111 | Hydroelectric Power
Generation | Electric Power Generation
22111 | Electric Power
Generation, Transmission
and Distribution 2211 | Utilities 221 | Utilities 22 |
| | | | 221112 | Fossil Fuel Electric
Power Generation | Electric Power Generation
22111 | Electric Power
Generation, Transmission
and Distribution 2211 | Utilities 221 | Utilities 22 |
| | | | 221113 | Nuclear Electric Power
Generation | Electric Power Generation
22111 | Electric Power
Generation, Transmission
and Distribution 2211 | Utilities 221 | Utilities 22 |
| | | | 221114 | Solar Electric Power
Generation | Electric Power Generation
22111 | Electric Power
Generation, Transmission
and Distribution 2211 | Utilities 221 | Utilities 22 |
| | | | 221115 | Wind Electric Power
Generation | Electric Power Generation
22111 | Electric Power
Generation, Transmission
and Distribution 2211 | Utilities 221 | Utilities 22 |
| | | | 221116 | Geothermal Electric Power
Generation | Electric Power Generation
22111 | Electric Power
Generation, Transmission
and Distribution 2211 | Utilities 221 | Utilities 22 |
| | | | 221117 | Biomass Electric Power
Generation | Electric Power Generation
22111 | Electric Power
Generation, Transmission
and Distribution 2211 | Utilities 221 | Utilities 22 |
| | | | 221118 | Other Electric Power
Generation | Electric Power Generation
22111 | Electric Power
Generation, Transmission
and Distribution 2211 | Utilities 221 | Utilities 22 |
