
		2020				2021
Contracts		Commitment amounts		Remaining liability balances		Commitment amounts		Remaining liability balances
		In millions of won
Purchase of cable (PVC, 1C, 2000SQ) 153,000M and others (Shin-Bupyung-Youngseo)	￦		56,574		16,038		57,046		16,240
Purchase of cable (PVC, 1C, 2500SQ) 103,374M and others (Bukdangjin-Shin-Tangjung)			45,390		32,876		46,616		34,102
Purchase of GIS (362kV, 6300A, 63kA) 23CB – Youngseo S/S			36,143		29,898		36,143		25,292
Purchase of GIS (362kV, 6300A, 63kA) 26CB – Hwasung S/S			40,010		8,328		40,010		5,540
Purchase of GIS (362kV, 6300A, 63kA) 27CB – Kwangyang S/S			37,744		2,244		37,744		140
Purchase of cable (FR CNCO-W, 1C, 325SQ) 1,400,000M			59,716		37,249		—		—
Purchase of switch (Eco) 9,360 units			40,631		24,031		—		—
Purchase of cable (TR CNCE-W,1C,600SQ) 551,200M			37,288		23,100		—		—
Purchase of cable (TR CNCE-W/AL,1C,400SQ) 4,464,000M			82,622		51,130		—		—
Purchase of cable (FR CNCO-W,1C,325SQ) 1,092,000M			42,068		35,358		—		—
Concrete pole (10M, general purpose, 350KGF) 102,435 ea and five other equipments			91,889		80,904		—		—
Purchase of cable (PVC, 1C, 2500SQ) 100,548M and others			—		—		56,860		34,576
Purchase of GIS (362kV, 6300A, 63kA) 25CB – Migeum S/S			—		—		32,000		26,700
Advanced E-Type low-pressure electronic power meter 1,320,000 ea			—		—		65,972		23,262
Purchase of cable (PVC, 1C, 2000SQ) 5,862M and others (Baekun-Gwangyanghang)			—		—		34,423		23,297
Purchase of cable (TR CNCE- W,1C,325SQ) 1,016,000M			—		—		66,581		40,254
Purchase of cable (TR CNCE-W,1C,600SQ) 485,000M			—		—		46,194		37,810
Purchase of cable (TR CNCE-W/AL,1C,400SQ) 3,303,900M			—		—		87,382		83,628
Concrete pole (10M, general purpose, 350KGF) 126,948 ea and five other equipments			—		—		188,338		168,456
Purchase of GIS (362KV, 6300A, 63KA) 25 – Shinyangsan S/S							31,464		31,464
Construction of Shin-Kori Units (#5,6)			8,625,387		3,256,117		9,800,424		3,479,667
Construction of Shin-Hanul Units (#1,2)			9,443,635		160,512		9,745,123		—
Other 30 contracts			107,586		58,466		792,485		620,593
Service of designing Seoul Combined Units (#1,2)			31,841		984		31,841		934
Service of designing Shin-Boryeong Units (#1,2)			121,163		521		121,114		—
Purchase of furnace for construction of Shin-Seocheon Thermal Power Plant			305,209		29,042		305,209		7,722
Purchase of turbine generator for construction of Shin-Seocheon Thermal Power Plant			105,226		8,279		105,226		6,301
Electricity construction of Shin-Seocheon Thermal Power Plant			282,234		13,524		340,356		—
Purchase of main machine for Jeju LNG Combined			166,287		11,182		166,287		10,972
Service of designing Taean U nits (#9,10)			112,813		12,933		112,909		12,623
Purchase of gas turbines and turbine equipment of Gimpo Combined Heat & Power Plant			104,600		41,840		126,302		61,735
Purchase of steam turbine, HRSG and Popwer Block of Gimpo Combined Heat & Power Plant			210,900		147,630		214,053		138,244
Construction of Gimpo Combined Heat & Power Plant			—		—		130,015		86,323
Purchase of coal handling machine for construction of Samcheok Units (#1,2)			285,158		22,751		286,571		6,215
Purchase of furnace main equipment for construction of Samcheok Units (#1,2)			1,065,141		11,609		—		—
Purchase of turbine main equipment for Samcheok U nits (#1,2)			211,349		125		—		—
Purchase of main equipment for Namjeju			140,144		112		140,144		3
Purchase of main equipment for Shin-Sejong Combined Thermal Power Plant			—		—		234,392		200,122

(2)	As of December 31, 2021, details of contracts for inventory purchase commitment are as follows:

The Company imports all of its uranium ore concentrates from sources outside Korea (including the United States, United Kingdom, Kazakhstan, France, Russia, South Africa, Canada and Australia) which are paid for with currencies other than Won, primarily in U.S. dollars. In order to ensure stable supply, the Company entered into long-term and medium-term contracts with various suppliers, and supplements such supplies with purchases of fuels on spot markets. The long-term and medium-term contract periods vary among contractors and the stages of fuel manufacturing process. Contract prices for processing of uranium are generally based on market prices. Contract periods for ore concentrates, conversion, enrichment and design and fabrication are as follows:


Type	Periods		Contracted quantity
Concentrate		2020 ~ 2030	32,435 Ton U3O8
Transformed		2020 ~ 2030	18,088 Ton U
Enrichment		2020 ~ 2030	17,667 Ton SWU

In addition, the contracted quantity of the molded uranium between Korea Hydro & Nuclear Power Co., Ltd. and KEPCO Nuclear Fuel Co., Ltd., which are subsidiaries of the Company, is 1,625 Ton U (contract periods : 2014 ~ 2024).