22 Utilities
221 Utilities
2211 Electric Power Generation, Transmission and Distribution
22111 Electric Power Generation
221111 Hydro-Electric Power Generation
221112 Fossil-Fuel Electric Power Generation
221119 Other Electric Power Generation
22112 Electric Power Transmission, Control and Distribution
221121 Electric Bulk Power Transmission and Control
221122 Electric Power Distribution
2212 Natural Gas Distribution
22121 Natural Gas Distribution
2213 Water, Sewage and Other Systems
22131 Water Supply and Irrigation Systems
22132 Sewage Treatment Facilities
22133 Steam and Air-Conditioning Supply
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