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Commitments for Expenditure (Tables)

12 Months Ended

Dec. 31, 2020

Commitments for Expenditure [Abstract]

Commitments for acquisition of property, plant and equipment

The commitments for acquisition of property, plant and equipment as of December 31, 2019 and 2020 are as follows:


		2019				2020
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)	￦		56,408		24,721		56,574		16,038
Purchase of cable (PVC, 1C, 2500SQ) 103,374M and others (Bukdangjin-Shin-Tangjung)			45,390		32,876		45,390		32,876
Purchase of GIS (362kV, 6300A, 63kA) 23CB – Youngseo S/S			36,143		36,143		36,143		29,898
Purchase of GIS (362kV, 6300A, 63kA) 26CB – Hwasung S/S			40,010		15,300		40,010		8,328
Purchase of GIS (362kV, 6300A, 63kA) 27CB – Kwangyang S/S			37,744		9,700		37,744		2,244
Purchase of cable (FR CNCO-W, 1C, 325SQ) 1,400,000M			59,716		37,249		59,716		37,249
Purchase of switch (Eco) 9,360 units			40,631		24,031		40,631		24,031
Purchase of cable (TR CNCE-W/AL, 1C, 400SQ) 2,654,400M			36,063		6,243		35,708		—
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
Construction of Shin-Kori units (#5,6)			8,625,387		4,479,956		8,625,387		3,256,117
Construction of Shin-Hanul units (#1,2)			8,306,149		—		9,443,635		160,512
Other 20 contracts			352,710		122,890		107,586		58,466
Service of designing Seoul Combined units (#1,2)			30,778		2,119		31,841		984
Purchase of main machine for construction of Seoul Combined units (#1,2)			331,249		15,918		331,249		—
Construction of Seoul Combined units (#1,2)			387,722		31,150		409,597		—
Service of designing Shin-Boryeong units (#1,2)			120,668		888		121,163		521
Purchase of main machine for construction of Shin-Boryeong units (#1,2)			816,317		4,955		816,317		—
Purchase of furnace for construction of Shin-Seocheon thermal power plant			305,209		43,388		305,209		29,042
Purchase of turbine generator for construction of Shin-Seocheon thermal power plant			105,226		10,736		105,226		8,279
Electricity construction of Shin-Seocheon thermal power plant			231,196		87,874		282,234		13,524
Purchase of main machine for Jeju LNG combined			166,287		12,088		166,287		11,182
Service of designing Taean units (#9,10)			112,483		12,862		112,813		12,933
Purchase of gas turbine and turbine equipment of Gimpo combined heat & power plant			104,600		104,600		104,600		41,840
Purchase of steam turbine, HRSG and POWER BLOCK of Gimpo combined heat & power plant			—		—		210,900		147,630
Purchase of coal handling machine for construction of Samcheok units (#1,2)			282,927		42,785		285,158		22,751
Purchase of furnace main equipment for construction of Samcheok units (#1,2)			1,066,824		11,771		1,065,141		11,609
Purchase of turbine main equipment for Samcheok units (#1,2)			223,550		132		211,349		125
Purchase of main equipment for Namjeju			138,486		84,982		140,144		112

Commitments for inventory purchase

As of December 31, 2020, 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 1,572 Ton U (contract period : 2009~2024).