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Intangible Assets other than Goodwill (Tables)

12 Months Ended

Dec. 31, 2020

Intangible Assets other than Goodwill [Abstract]

Intangible Assets other than Goodwill

Intangible assets as of December 31, 2019 and 2020 are as follows:

						2019
						Acquisition cost				Government grants				Accumulated amortization				Accumulated impairment losses				Book value
						In millions of won
Software		￦					707,731				(235	)			(542,736	)			—				164,760
Licenses and franchises							3,398				—				(3,398	)			—				—
Copyrights, patents rights and other industrial rights							102,828				—				(40,389	)			(9,178	)			53,261
Mining rights							584,969				—				(28,456	)			(512,790	)			43,723
Development expenditures							916,834				(1,492	)			(822,972	)			(19	)			92,351
Intangible assets under development							73,335				(11,029	)			—				(12,845	)			49,461
Usage rights of donated assets and other							582,825				—				(389,664	)			—				193,161
Leasehold rights							25,989				—				(20,671	)			—				5,318
Greenhouse gas emissions rights							41,656				—				—				—				41,656
Others							557,749				(79	)			(119,446	)			(11,939	)			426,285
		￦					3,597,314				(12,835	)			(1,967,732	)			(546,771	)			1,069,976

						2020
						Acquisition cost				Government grants				Accumulated amortization				Accumulated impairment losses				Book value
						In millions of won
Software		￦					775,667				(136	)			(623,504	)			—				152,027
Licenses and franchises							547				—				(547	)			—				—
Copyrights, patents rights and other industrial rights							101,866				—				(49,772	)			(9,178	)			42,916
Mining rights							604,703				—				(34,062	)			(528,251	)			42,390
Development expenditures							958,035				(5,043	)			(862,850	)			(19	)			90,123
Intangible assets under development							79,862				(7,203	)			—				(12,844	)			59,815
Usage rights of donated assets and other							592,930				—				(408,455	)			—				184,475
Leasehold rights							27,843				—				(21,503	)			—				6,340
Greenhouse gas emissions rights							61,373				—				—				—				61,373
Others							566,200				(75	)			(137,843	)			(12,011	)			416,271
		￦					3,769,026				(12,457	)			(2,138,536	)			(562,303	)			1,055,730

Changes in intangible assets

Changes in intangible assets for the years ended December 31, 2019 and 2020 are as follows:

						2019
						Beginning balance				Acquisition				Disposal				Amortization				Impairment(*1)				Others(*2)				Ending balance
						In millions of won
Software		￦					157,681				42,694				(774	)			(81,883	)			—				47,277				164,995
(Government grants)							(420	)			—				—				202				—				(17	)			(235	)
Copyrights, patents rights and other industrial rights							67,112				171				(325	)			(9,196	)			—				(4,501	)			53,261
Mining rights							534,524				8,742				—				(7,186	)			(513,519	)			21,162				43,723
Development expenditures							92,486				687				—				(28,901	)			(68	)			29,639				93,843
(Government grants)							(2,110	)			—				—				833				—				(215	)			(1,492	)
Intangible assets under development							70,536				56,082				—				—				—				(66,128	)			60,490
(Government grants)							(10,564	)			—				—				—				—				(465	)			(11,029	)
Usage rights of donated assets and other							87,011				—				—				(15,632	)			—				121,782				193,161
(Government grants)							—				—				—				—				—				—				—
Leasehold rights							5,552				—				—				(741	)			—				507				5,318
Greenhouse gas emissions rights							7,050				118,743				(7,058	)			—				—				(77,079	)			41,656
Others							217,084				2,307				(164	)			(14,413	)			(22	)			221,572				426,364
(Government grants)							—				—				—				2				—				(81	)			(79	)
		￦					1,225,942				229,426				(8,321	)			(156,915	)			(513,609	)			293,453				1,069,976

(*1) KEPCO Australia Pty., Ltd. and KEPCO Bylong Australia Pty., Ltd., 100% owned subsidiaries, performed an impairment test over the mining rights and the Company recognized the amount of the carrying amount in excess of its recoverable amount as an impairment loss.

(*2) ‘Others’ include the business rights amounting to ￦172,434 million increased from the business combination between Korea East-West Power Co., Ltd. and Eumseong Natural Gas Power Co., Ltd.

						2020
						Beginning balance				Acquisition				Disposal				Amortization				Impairment				Others				Ending balance
						In millions of won
Software		￦					164,995				14,101				—				(77,501	)			—				50,568				152,163
(Government grants)							(235	)			—				—				99				—				—				(136	)
Copyrights, patents rights and other industrial rights							53,261				369				(390	)			(8,352	)			—				(1,972	)			42,916
Mining rights							43,723				1,664				—				(4,380	)			—				1,383				42,390
Development expenditures							93,843				10,273				—				(32,034	)			—				23,084				95,166
(Government grants)							(1,492	)			—				—				1,453				—				(5,004	)			(5,043	)
Intangible assets under development							60,490				53,638				—				—				(23	)			(47,087	)			67,018
(Government grants)							(11,029	)			—				—				—				—				3,826				(7,203	)
Usage rights of donated assets and other							193,161				—				—				(18,448	)			—				9,762				184,475
Leasehold rights							5,318				—				—				(831	)			—				1,853				6,340
Greenhouse gas emissions rights							41,656				37,109				(9,271	)			—				—				(8,121	)			61,373
Others							426,364				3,217				(46	)			(30,476	)			(3,576	)			20,863				416,346
(Government grants)							(79	)			—				—				4				—				—				(75	)
		￦					1,069,976				120,371				(9,707	)			(170,466	)			(3,599	)			49,155				1,055,730

Significant specific intangible assets

Significant specific intangible assets as of December 31, 2019 and 2020 are as follows:

2019
Type		Description		Currency		Amount				Remaining useful lives
		In millions of won and thousands of Australian dollars
Software		ERP system and others		KRW			432			1 year and 2 months ~ 1 year and 4 months
		Electricity sales information system		KRW			4,824			3 years
Copyrights, patents rights and other industrial rights		Smart technology verification and standard design project conducting right		KRW			6,787			2 years and 9 months
		Contributions to ARP NRC DC		KRW			34,755			8 years
Mining rights		Mining rights of Bylong mine		AUD			—			—  (*)
Development expenditures		Electricity sales information system		KRW			15,283			2 years and 3 months
Usage rights of donated assets and others		Sejong Haengbogdosi sharing charge		KRW			31,385			6 years and 11 months
		Dangjin power plant load facility usage right		KRW			7,870			1 year and 3 months
Others		Occupancy and use of public waters		KRW			92,446			17 years and 1 months
		Business rights		KRW			171,955			29 years and 11 months

(*) The carrying amount of mining rights is nil, because KEPCO Australia Pty., Ltd. and KEPCO Bylong Australia Pty., Ltd. recognized impairment losses in full during the year ended December 31, 2019.

2020
Type		Description		Currency		Amount				Remaining useful lives
		In millions of won and thousands of Australian dollars
Software		ERP system and others		KRW			81			2 months ~ 4 months
Copyrights, patents rights and other industrial rights		Smart technology verification and standard design project conducting right		KRW			4,936			1 year 9 months
		Contributions to ARP NRC DC		KRW			29,219			7 years
Mining rights		Mining rights of Bylong mine		AUD			—			—  (*)
Development expenditures		Electricity sales information system		KRW			8,229			1 year and 2 months
Usage rights of donated assets and others		Sejong Haengbogdosi sharing charge		KRW			26,847			5 years and 11 months
		Dangjin power plant load facility usage right		KRW			1,574			3 months
		Right of use electricity and gas supply facility (Community district of Songdo)		KRW			10,016			9 years and 6 months
Others		Occupancy and use of public waters		KRW			87,035			16 years and 1 month
		Greenhouse gas emissions rights		KRW			61,373			—
		Business rights		KRW			166,207			28 years and 11 months

(*) The carrying amount of mining rights is nil, because KEPCO Australia Pty., Ltd. and KEPCO Bylong Australia Pty., Ltd. had recognized impairment losses in full.

Recognized research and development expenses

For the years ended December 31, 2018, 2019 and 2020, the Company recognized research and development expenses of ￦723,888 million, ￦735,715 million and ￦700,642 million, respectively.

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