ICNEA 4420—Power supply

Where 4420 sits

1. D Electricity, heat, gas and water production and supply industry
2. 44 Electricity and heat production and supply industry
3. 442 Power supply
4. 4420 Power supply

What 4420 includes

• Includes the following power supply activities：
• Power supply and electricity sales
• Electrical energy transmission and distribution activities: AC transmission above 750 kV, conventional DC transmission above plus or minus 500 kV, flexible DC transmission, and other electrical energy transmission and distribution activities
• Large-scale power grid security guarantee and defense system and intelligent dispatching system
• Large-scale energy storage system
• Large-scale access and consumption of renewable energy, grid-connected distributed power supply and control system
• Refers to the transmission and distribution activities of electrical energy sold to users using the power grid, as well as the power supply activities of the power supply Bureau.

4420 in other systems