Okinawa Electric Power Incorporated : Summary of the Settlement of Accounts for FY2023 2nd Quarter

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Summary of the Settlement of Accounts for FY2023 2nd Quarter (April 1 - September 30, 2023) October 31, 2023 The Okinawa Electric Power Company, Inc. The Okinawa Electric Power Company, Inc. Table of contents Financial Financial Results for FY2023 2Q YTD (Year-on-Year Comparison) 2 Trends in Electricity Sales Volume 3 Results Non-consolidated - Factors in Revenue and Expenditure Changes 4 Non-consolidated - Trends in Data and Effects of Changes 5 for FY2023 Consolidated - Factors in Revenue and Expenditure Changes 6 Financial Results of each Company 7 2Q YTD Balance Sheet Comparison 8 State of Capex, Cash Flow and Interest-bearing Debt 9 Financial Annual Outlook Summary 10 Non-consolidated - Revenue and Expenditure Forecasts, Factors in Changes I 11 Outlook Non-consolidated - Revenue and Expenditure Forecasts, Factors in Changes II 12 Non-consolidated - Trends in Data and Effects of Changes (Forecasts) 13 for FY2023 Consolidated - Revenue and Expenditure Forecasts, Factors in Changes 14 Outlook of Capex, Cash Flow and Interest-bearing Debt 15 Reference Trends in Financial Indicators (Non-consolidated) 16 Trends in Financial Indicators (Consolidated) 17 1 The Okinawa Electric Power Company, Inc. Financial Results for FY2023 2Q YTD (Year-on-Year Comparison) (Unit: million yen, X) Consolidated (A) Non-consolidated (B) (A) / (B) FY2022 FY2023 Rate of FY2022 FY2023 Rate of FY2022 FY2023 2Q YTD 2Q YTD 2Q YTD 2Q YTD 2Q YTD 2Q YTD Change Change (Results) (Results) (Results) (Results) (Results) (Results) Sales 118,738 130,501 ＋9.9％ 114,888 125,604 ＋9.3％ 1.03 1.04 Operating -22,518 4,704 － -22,905 4,026 － － 1.17 income Ordinary -22,473 4,216 － -22,709 3,814 － － 1.11 income Net income * * － -16,871 3,106 － － 1.04 -16,819 3,238 * Net income attributable to owners of parent. 【Revenue】 Increase in income from the price revision in Electric business. 【Expenditure】 Decrease in Fuel costs and purchased power costs due to fuel price fall in Electric business. Increase in Non-current assets retirement costs,due to impact of the damage to the coal unloader at the Gushikawa Thermal Power Plant in Electric business. 2 The Okinawa Electric Power Company, Inc. Trends in Electricity Sales Volume Electricity Sales Volume (Unit: million kWh, %) FY2022 FY2023 Rate of 2Q YTD 2Q YTD Change Change (Results) (Results) Lighting 1,580 1,468 -112 -7.1 Power 2,297 2,275 -22 -1.0 Total 3,877...

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