48 00 00 Electrical Power Generation
48 10 00 Electrical Power Generation Equipment
48 11 00 Fossil Fuel Plant Electrical Power Generation Equipment 48 12 00 Nuclear Fuel Plant Electrical Power Generation Equipment 48 13 00 Hydroelectric Plant Electrical Power Generation Equipment 48 14 00 Solar Energy Electrical Power Generation Equipment 48 15 00 Wind Energy Electrical Power Generation Equipment 48 16 00 Geothermal Energy Electrical Power Generation Equipment 48 17 00 Electrochemical Energy Electrical Power Generation Equipment 48 18 00 Fuel Cell Electrical Power Generation Equipment 48 19 00 Electrical Power Control Equipment