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Sichuan Energy Investment Development Co., Ltd., a vertically integrated power supplier and service provider, generates, distributes, and sells electricity in Yibin City, Sichuan Province. It generates electricity through hydropower plants; and distributes electricity to household, general industrial and commercial, large industrial, state grid, and other users through its grid transmission and distribution system, as well as step-up and step-down substations. As of December 31, 2021, the company owned and operated 34 hydropower plants with a total installed capacity of 138,355 kilowatts; 2 units of 220 kilovolt (kV) substations with a capacity of 720,000 kilo-volt-ampere (kVA); 19 units of 110 kV substations with a total capacity of 942,000 kVA; and 59 units of 35 kV substations with a total capacity of 572,050 kVA.