| 2024 |
| 04/26 | （IR情報）17:00 南港発電所における高効率コンバインドサイクル機への設備更新について |
| 04/26 | （IR情報）17:00 奥多々良木発電所3、4号機の設備更新について |
| 04/26 | 2,287 | 2,309 | 2,261 | 2,302 | -0.43% | 4,225,100 | 2兆1609億 | +1.37% |
| 04/25 | 2,360 | 2,372 | 2,300 | 2,312 | -2.24% | 2,517,900 | 2兆1703億 | +2.03% |
| 04/24 | 2,381 | 2,391 | 2,323 | 2,365 | +0.04% | 3,419,900 | 2兆2201億 | +4.69% |
| 04/23 | 2,400 | 2,451 | 2,361 | 2,364 | -2.48% | 3,148,700 | 2兆2191億 | +5.07% |
| 04/22 | 2,356 | 2,461 | 2,356 | 2,424 | +5.03% | 4,954,800 | 2兆2754億 | +8.21% |
| 04/19 | 2,301 | 2,329 | 2,259 | 2,308 | -0.65% | 2,248,900 | 2兆1665億 | +3.59% |
| 04/18 | 2,280 | 2,332 | 2,266 | 2,323 | +0.78% | 2,901,500 | 2兆1806億 | +4.69% |
| 04/17 | 2,411 | 2,448 | 2,302 | 2,305 | -4.4% | 4,171,700 | 2兆1637億 | +4.58% |
| 04/16 | 2,471 | 2,499 | 2,399 | 2,411 | -1.75% | 5,849,800 | 2兆2632億 | +10.14% |
| 04/15 | 2,330 | 2,467 | 2,308 | 2,454 | +4.25% | 5,333,800 | 2兆3036億 | +13.09% |
| 04/12 | 2,362 | 2,363 | 2,300 | 2,354 | -0.25% | 3,777,800 | 2兆2097億 | +9.44% |
| 04/11 | 2,254 | 2,382 | 2,243 | 2,360 | +3.74% | 5,220,200 | 2兆2154億 | +10.44% |
| 04/10 | 2,260 | 2,290 | 2,221 | 2,275 | +0.93% | 3,590,800 | 2兆1356億 | +7.26% |
| 04/09 | 2,277 | 2,277 | 2,232 | 2,254 | -1.01% | 2,984,200 | 2兆1159億 | +6.98% |
| 04/08 | 2,270 | 2,289 | 2,235 | 2,277 | +0.66% | 4,995,000 | 2兆1374億 | +8.79% |
| 04/05 | 2,208 | 2,263 | 2,188 | 2,262 | +0.49% | 4,099,100 | 2兆1234億 | +8.75% |
| 04/04 | 2,199 | 2,259 | 2,186 | 2,251 | +3.54% | 4,041,000 | 2兆1130億 | +8.95% |
| 04/03 | 2,150 | 2,213 | 2,139 | 2,174 | +2.11% | 4,309,600 | 2兆408億 | +5.84% |
| 04/02 | 2,127 | 2,165 | 2,121 | 2,129 | +0.38% | 2,615,400 | 1兆9985億 | +4.16% |
| 04/01 | 2,205 | 2,213 | 2,121 | 2,121 | -3.37% | 2,609,800 | 1兆9910億 | +4.12% |
| 03/29 | 2,168 | 2,244 | 2,152 | 2,195 | +2.14% | 4,785,800 | 2兆605億 | +8.13% |
| 03/28 | 2,090 | 2,155 | 2,081 | 2,149 | +1.27% | 3,789,800 | 2兆173億 | +6.33% |
| 03/27 | 2,153 | 2,172 | 2,118 | 2,122 | -1.35% | 3,196,500 | 1兆9919億 | +5.41% |
| 03/26 | 2,131 | 2,154 | 2,118 | 2,151 | +0.75% | 2,423,800 | 2兆192億 | +7.28% |
| 03/25 | 2,169 | 2,190 | 2,135 | 2,135 | -1.66% | 2,969,300 | 2兆41億 | +6.91% |
| 03/22 | 2,160 | 2,189 | 2,149 | 2,171 | +1.54% | 2,759,200 | 2兆379億 | +9.21% |
| 03/21 | 2,165 | 2,165 | 2,127 | 2,138 | -0.09% | 2,458,000 | 2兆70億 | +8.09% |
| 03/19 | 2,117 | 2,140 | 2,109 | 2,140 | +1.33% | 3,185,800 | 2兆88億 | +8.68% |
| 03/18 | 2,165 | 2,175 | 2,106 | 2,112 | -0.71% | 4,970,900 | 1兆9826億 | +7.81% |
| 03/15 | 2,071 | 2,135 | 2,061 | 2,127 | +2.46% | 6,774,700 | 1兆9966億 | +9.13% |
| 03/14 | 1,972 | 2,088 | 1,971 | 2,076 | +6.13% | 7,942,100 | 1兆9488億 | +6.96% |
| 03/13 | 1,926 | 1,972 | 1,925 | 1,956 | +1.35% | 2,872,600 | 1兆8361億 | +1.14% |
| 03/12 | 1,936 | 1,946 | 1,876 | 1,930 | -0.31% | 3,556,700 | 1兆8117億 | -0.26% |
| 03/11 | 1,965 | 1,982 | 1,912 | 1,936 | -2.22% | 3,282,800 | 1兆8173億 | 0% |
| 03/08 | 1,972 | 1,981 | 1,946 | 1,980 | -0.75% | 4,122,400 | 1兆8586億 | +2.27% |
| 03/07 | （IR情報）15:00 高浜発電所4号機の定期検査工程の変更について |
| 03/07 | 1,968 | 1,996 | 1,946 | 1,995 | +1.89% | 3,655,700 | 1兆8727億 | +2.94% |
| 03/06 | 1,921 | 1,964 | 1,913 | 1,958 | +1.71% | 3,068,700 | 1兆8380億 | +1.08% |
| 03/05 | 1,913 | 1,932 | 1,903 | 1,925 | +0.42% | 2,099,500 | 1兆8070億 | -0.62% |
| 03/04 | 1,943 | 1,950 | 1,906 | 1,917 | -1.44% | 3,288,200 | 1兆7995億 | -1.03% |
| 03/01 | 1,930 | 1,953 | 1,916 | 1,945 | +1.25% | 2,200,300 | 1兆8258億 | +0.31% |
| 02/29 | 1,937 | 1,947 | 1,914 | 1,921 | -1.69% | 2,980,100 | 1兆8033億 | -0.93% |
| 02/28 | 1,917 | 1,961 | 1,916 | 1,954 | +2.52% | 3,255,500 | 1兆8342億 | +0.72% |
| 02/27 | 1,935 | 1,943 | 1,906 | 1,906 | -2.56% | 3,063,500 | 1兆7892億 | -1.8% |
| 02/26 | 1,968 | 1,994 | 1,951 | 1,956 | -0.46% | 2,264,600 | 1兆8361億 | +0.72% |
| 02/22 | 1,939 | 1,981 | 1,934 | 1,965 | +0.77% | 2,978,400 | 1兆8446億 | +1.13% |
| 02/21 | 1,946 | 1,951 | 1,926 | 1,950 | +0.05% | 2,186,500 | 1兆8305億 | +0.31% |
| 02/20 | 1,950 | 1,952 | 1,930 | 1,949 | +0.31% | 2,266,700 | 1兆8295億 | +0.1% |
| 02/19 | 1,915 | 1,943 | 1,907 | 1,943 | +0.41% | 1,557,000 | 1兆8239億 | -0.36% |
| 02/16 | 1,930 | 1,955 | 1,916 | 1,935 | +0.73% | 2,944,700 | 1兆8164億 | -0.87% |
| 02/15 | 1,915 | 1,927 | 1,902 | 1,921 | +0.63% | 2,382,300 | 1兆8033億 | -1.74% |
| 02/14 | 1,926 | 1,928 | 1,898 | 1,909 | -0.73% | 3,071,700 | 1兆7920億 | -2.4% |
| 02/13 | 1,890 | 1,924 | 1,879 | 1,923 | +2.51% | 2,543,600 | 1兆8051億 | -1.79% |
| 02/09 | 1,866 | 1,886 | 1,846 | 1,876 | -0.27% | 2,791,100 | 1兆7610億 | -4.29% |
| 02/08 | 1,905 | 1,908 | 1,868 | 1,881 | -1.72% | 3,127,900 | 1兆7657億 | -4.13% |
| 02/07 | 1,905 | 1,921 | 1,897 | 1,914 | 0% | 2,553,500 | 1兆7967億 | -2.4% |
| 02/06 | 1,965 | 1,966 | 1,909 | 1,914 | -2.79% | 3,696,000 | 1兆7967億 | -2.3% |
| 02/05 | 1,974 | 1,979 | 1,948 | 1,969 | +0.72% | 2,840,500 | 1兆8483億 | +0.61% |
| 02/02 | 1,940 | 1,967 | 1,917 | 1,955 | +0.77% | 3,897,200 | 1兆8352億 | +0.21% |
| 02/01 | 1,980 | 2,004 | 1,926 | 1,940 | -4.01% | 5,620,400 | 1兆8211億 | -0.26% |
| 01/31 | （IR情報）16:00 2024年3月期第3四半期決算短信〔日本基準〕(連結) |
| 01/31 | 2,014 | 2,025 | 1,977 | 2,021 | +2.28% | 4,910,900 | 1兆8971億 | +4.18% |
| 01/30 | 1,975 | 1,987 | 1,960 | 1,976 | +0.56% | 2,395,300 | 1兆8549億 | +2.33% |
| 01/29 | 1,938 | 1,969 | 1,937 | 1,965 | +2.18% | 2,267,200 | 1兆8446億 | +2.08% |
| 01/26 | 1,958 | 1,958 | 1,921 | 1,923 | -1.89% | 2,098,300 | 1兆8051億 | +0.05% |
| 01/25 | 1,930 | 1,960 | 1,923 | 1,960 | +1.03% | 2,164,500 | 1兆8399億 | +1.98% |
| 01/24 | 1,936 | 1,946 | 1,918 | 1,940 | -0.36% | 2,234,400 | 1兆8211億 | +0.99% |
| 01/23 | 1,960 | 1,975 | 1,935 | 1,947 | -1.52% | 2,731,800 | 1兆8277億 | +1.25% |
| 01/22 | （IR情報）16:17 高浜発電所4号機の蒸気発生器伝熱管損傷について |
| 01/22 | 1,962 | 1,977 | 1,951 | 1,977 | +1.38% | 2,269,900 | 1兆8558億 | +2.54% |
| 01/19 | 1,984 | 1,984 | 1,933 | 1,950 | -1.56% | 2,892,800 | 1兆8305億 | +0.98% |
| 01/18 | 1,978 | 1,999 | 1,963 | 1,981 | -0.2% | 2,113,500 | 1兆8596億 | +2.32% |
| 01/17 | 1,999 | 2,024 | 1,972 | 1,985 | -1.29% | 3,223,200 | 1兆8633億 | +2.43% |
| 01/16 | 2,022 | 2,045 | 2,004 | 2,011 | -1.08% | 1,807,100 | 1兆8877億 | +3.61% |
| 01/15 | 1,983 | 2,033 | 1,977 | 2,033 | +2.06% | 1,612,600 | 1兆9084億 | +4.69% |
| 01/12 | 1,990 | 2,006 | 1,985 | 1,992 | -0.4% | 2,176,900 | 1兆8699億 | +2.73% |
| 01/11 | 1,985 | 2,028 | 1,982 | 2,000 | +1.52% | 2,734,600 | 1兆8774億 | +3.2% |
| 01/10 | 1,956 | 1,990 | 1,955 | 1,970 | +0.56% | 2,078,300 | 1兆8493億 | +1.65% |
| 01/09 | 1,960 | 1,977 | 1,944 | 1,959 | +0.1% | 2,222,700 | 1兆8389億 | +1.08% |
| 01/05 | 1,939 | 1,958 | 1,914 | 1,957 | +2.03% | 2,364,400 | 1兆8371億 | +0.98% |
| 01/04 | 1,860 | 1,922 | 1,829 | 1,918 | +2.46% | 3,627,200 | 1兆8004億 | -1.03% |
| 2023 |
| 12/29 | 1,848 | 1,872 | 1,846 | 1,872 | +1.08% | 2,080,300 | 1兆7573億 | -3.46% |
| 12/28 | 1,845 | 1,858 | 1,839 | 1,852 | -0.54% | 1,458,600 | 1兆7385億 | -4.63% |
| 12/27 | 1,824 | 1,863 | 1,816 | 1,862 | +2.14% | 3,201,100 | 1兆7479億 | -4.32% |
| 12/26 | 1,842 | 1,842 | 1,812 | 1,823 | 0% | 2,559,900 | 1兆7113億 | -6.46% |
| 12/25 | 1,834 | 1,837 | 1,813 | 1,823 | +0.5% | 1,941,300 | 1兆7113億 | -6.7% |
| 12/22 | 1,796 | 1,821 | 1,792 | 1,814 | +1.4% | 2,866,100 | 1兆7028億 | -7.45% |
| 12/21 | 1,820 | 1,836 | 1,780 | 1,789 | -1.43% | 5,217,900 | 1兆6793億 | -8.91% |
| 12/20 | 1,847 | 1,856 | 1,815 | 1,815 | -4.67% | 7,800,000 | 1兆7038億 | -7.82% |
| 12/19 | （IR情報）16:25 (数値データ追加)「通期業績予想の修正に関するお知らせ」におけるXBRLデータ追加について |
| 12/19 | （IR情報）15:00 和歌山発電所建設計画の見直しおよび計画予定地の新たな活用に向けた取組みについて |
| 12/19 | （IR情報）15:00 通期業績予想の修正に関するお知らせ |
| 12/19 | 1,906 | 1,910 | 1,875 | 1,904 | -0.47% | 2,795,000 | 1兆7873億 | -3.55% |
| 12/19 | （IR情報）8:55 和歌山発電所建設計画に関する一部報道について |
| 12/18 | （IR情報）17:32 株主代表訴訟に関するお知らせ |
| 12/18 | 1,910 | 1,914 | 1,873 | 1,913 | -1.65% | 2,511,000 | 1兆7957億 | -3.14% |
| 12/15 | 1,971 | 1,973 | 1,936 | 1,945 | -2.41% | 3,859,600 | 1兆8258億 | -1.52% |
| 12/14 | 2,077 | 2,093 | 1,989 | 1,993 | -3.21% | 3,400,700 | 1兆8708億 | +1.01% |
| 12/13 | 2,051 | 2,073 | 2,031 | 2,059 | +0.39% | 2,582,400 | 1兆9328億 | +4.62% |
| 12/12 | 2,082 | 2,084 | 2,035 | 2,051 | -1.3% | 2,755,100 | 1兆9253億 | +4.54% |
| 12/11 | 2,029 | 2,079 | 2,015 | 2,078 | +2.26% | 2,994,900 | 1兆9506億 | +6.02% |
| 12/08 | 2,029 | 2,060 | 2,009 | 2,032 | -1.6% | 5,145,600 | 1兆9075億 | +3.89% |
| 12/07 | 2,022 | 2,065 | 2,020 | 2,065 | +1.77% | 3,943,600 | 1兆9384億 | +5.79% |
| 12/06 | 1,974 | 2,029 | 1,967 | 2,029 | +3.26% | 3,798,400 | 1兆9046億 | +4.21% |
| 12/05 | 1,969 | 1,978 | 1,947 | 1,965 | -0.3% | 2,015,400 | 1兆8446億 | +1.03% |
| 12/04 | 1,991 | 1,998 | 1,967 | 1,971 | -1% | 2,247,500 | 1兆8502億 | +1.28% |
| 12/01 | 1,985 | 2,015 | 1,980 | 1,991 | +1.01% | 3,071,000 | 1兆8690億 | +2.31% |
| 11/30 | 1,970 | 1,981 | 1,951 | 1,971 | +0.31% | 6,687,000 | 1兆8502億 | +1.39% |
