Financial Performance - Total sales for 2022 reached W71,257,863 million, an increase of 17.3% compared to W60,673,587 million in 2021[31]. - The gross loss for 2022 was W29,645,731 million, compared to a gross loss of W2,970,703 million in 2021, indicating a significant decline in profitability[31]. - Operating loss for 2022 was W32,655,153 million, up from W5,846,499 million in 2021, reflecting increased operational challenges[31]. - The net loss for the year 2022 was W24,429,108 million, compared to a net loss of W5,215,581 million in 2021, representing a substantial increase in losses[32]. - The company reported finance income of W1,833,312 million in 2022, an increase from W1,402,614 million in 2021, showing improved financial management[31]. - Other comprehensive income for the year was W1,246,869 million, compared to W599,614 million in 2021, indicating a positive shift in overall financial health despite operational losses[32]. - Basic and diluted loss per share for 2022 was W38,112, compared to W8,263 in 2021, highlighting the increased financial burden on shareholders[32]. - The company reported a loss of W24,466,853 million for the period, significantly impacting retained earnings which decreased to W21,431,300 million[35]. - The total comprehensive income for the period included a remeasurement of defined benefit liability, net of tax, amounting to W626,769 million[35]. - The company reported a significant increase in proceeds from disposals of financial assets, reaching W14,182,348 million in 2022, compared to W7,023,674 million in 2021[38]. Assets and Liabilities - Korea Electric Power Corporation (KEPCO) reported total assets of 234,804,994 million won as of December 31, 2022, an increase from 211,123,727 million won in 2021, reflecting a growth of approximately 11%[28]. - Current assets rose to 29,750,545 million won in 2022, up from 22,050,845 million won in 2021, indicating a growth of about 35%[28]. - Non-current assets totaled 205,054,449 million won in 2022, compared to 189,072,882 million won in 2021, reflecting an increase of approximately 8.5%[28]. - Total liabilities as of December 31, 2022, amounted to W192,804,738 million, an increase of 32.2% from W145,797,021 million in 2021[29]. - Non-current financial liabilities increased to W98,334,120 million in 2022, up from W66,570,419 million in 2021, indicating higher long-term debt obligations[29]. - Total equity attributable to owners of the controlling company decreased to W40,545,396 million in 2022 from W63,780,272 million in 2021, reflecting a decline in shareholder value[29]. - The balance of non-controlling interests as of December 31, 2022, was W1,454,860 million, reflecting changes in consolidation scope and transactions between consolidated entities[35]. Cash Flow - In 2022, Korea Electric Power Corporation (KEPCO) reported a net cash outflow from operating activities of W(23,477,500) million, a significant decline compared to a net inflow of W4,491,378 million in 2021[38]. - The company experienced a net cash outflow from investing activities of W(14,953,753) million in 2022, compared to W(12,372,520) million in 2021[38]. - KEPCO's net cash provided by financing activities increased to W38,997,899 million in 2022, up from W8,435,077 million in 2021[38]. - The total cash and cash equivalents at December 31, 2022, amounted to W3,234,780 million, up from W2,635,238 million at the end of 2021[38]. Operational Efficiency and Strategy - The company is focused on enhancing its financial position and operational efficiency through strategic assessments and management of its assets[15]. - The company plans to expand its market presence and invest in new technologies to enhance operational efficiency and drive future growth[37]. - Future guidance indicates a focus on improving cash flow management and reducing operational costs to achieve profitability in the upcoming fiscal year[37]. Segment Performance - Total segment revenue for 2022 was W71,257,863 million, an increase from W60,673,587 million in 2021, representing a growth of approximately 17.5%[200]. - The operating profit for the Transmission and Distribution segment in 2022 was W1,922,354 million, compared to a loss of W7,425,576 million in 2021, indicating a significant turnaround[200]. - Electric power generation (Nuclear) segment reported an operating profit of W653,839 million in 2022, up from W116,875 million in 2021, reflecting a substantial increase of 460%[200]. - The Electric power generation (Non-nuclear) segment generated an operating profit of W316,908 million in 2022, compared to W351,824 million in 2021, showing a slight decrease of 9.9%[200]. - Plant maintenance & engineering service segment achieved an operating profit of W236,310 million in 2022, up from W434,885 million in 2021, indicating a decrease of 45.6%[200]. - The Others segment reported an operating profit of W297,116 million in 2022, compared to W203,121 million in 2021, marking an increase of 46.2%[200]. Accounting Policies and Standards - The Group applies a cost pass-through tariff system for electricity rates effective from January 1, 2021, which is expected to not affect existing accounting policies[103]. - The Group recognizes revenue based on the percentage-of-completion for contracts such as EPC business and O&M[102]. - The Group's accounting policies include recognizing deferred tax assets and liabilities in accordance with KIFRS 1012 and KIFRS 1019[16]. - The Group assesses impairment losses at the end of each reporting period, recognizing losses if the carrying amount exceeds the recoverable amount[97]. - The Group's property, plant, and equipment are depreciated on a straight-line basis over estimated useful lives ranging from 2 to 65 years, depending on the asset type[139].

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the Month of June 2022 KOREA ELECTRIC POWER CORPORATION (Translation of registrant's name into English) 55 Jeollyeok-ro, Naju-si, Jeollanam-do, 58322, Korea (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F ☒ Form 4 ...

As filed with the Securities and Exchange Commission on April 29, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☐ SHELL COMPANY REPO ...

Table of Contents SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the Month of March 2022 KOREA ELECTRIC POWER CORPORATION (Translation of registrant's name into English) 55 Jeollyeok-ro, Naju-si, Jeollanam-do, 58322, Korea (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. F ...

As filed with the Securities and Exchange Commission on April 30, 2021 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☐ SHELL COMPANY REPO ...

As filed with the Securities and Exchange Commission on April 29, 2020 ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of event requi ...

As filed with the Securities and Exchange Commission on April 30, 2019 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☐ SHELL COMPANY REPO ...