Increase in Fuel Costs for Substitute Thermal Power Generation Due to Prolonged Nuclear Power Plant Outages
First written in FY2017. 9 of 21 entries say "Mitigated", first in FY2018-Q1. Latest entry: 2026-10-09.
The Kansai Electric Power Company moved to the "Worse" side of this theme in 2025.
1 other company's latest entry also says "Mitigated".
- 2026-10-09MitigatedOccurring Fact
「調査の結果、６Ａ高圧給水加熱器常用水位制御弁出口配管から空気抜き弁までの配管に貫通穴を確認しました。原因は、２０１０年の工事に伴い、保温材と外装板を取り付けた際に、貫通穴の直上の外装板を上下逆に取り付けたため、その後、外装板の合わせ面から雨水が浸入し、配管の外面腐食が進行したことで貫通に至ったと推定しました。 対策として、当該配管をステンレス鋼製の配管に取り替えるとともに、「保修業務ガイド」に外装板の取付方向に関する注意事項を明確化しました。」
美浜発電所３号機は一時的に手動停止したものの、原因調査、配管取替えおよび再発防止措置を経て起動予定が示され、停止長期化による代替火力燃料費への圧力は緩和方向に動いた。 - FY2026WorsenedAnnual report
「Based on fiscal 2025 results, a 1% deterioration in the nuclear capacity factor would increase costs by approximately ¥4.6 billion.」
All 7 nuclear power plants continue to operate, while the cost impact of a lower nuclear capacity factor was quantified at approximately ¥4.6 billion per 1%. - 2026-04-30WorsenedEarnings
「Impact of the lower nuclear capacity factor and higher fuel-market prices, among other factors」
The fiscal 2026 forecast assumes a nuclear capacity factor of approximately 70%, down from the 84.1% recorded in fiscal 2025. - FY2026-H1WorsenedAnnual report
「Nuclear power generation 26,000 21,120 81.2」
Nuclear power generation fell to 81.2% of the year-earlier level. Although the text does not identify the cause of substitute thermal costs associated with the prolonged nuclear shutdowns, it reports a decline in nuclear power generation. - FY2024MitigatedAnnual report
「As a result, all plants at the Mihama, Takahama and Ohi power stations were operating, achieving an operating configuration of 7 nuclear units.」
Achieving an operating configuration of 7 nuclear units eased pressure from substitute thermal fuel costs due to the prolonged shutdowns. - FY2024-Q3MitigatedAnnual report
「On the expenditure side, operating expenses fell by ¥607,089 million, or 20.3%, year on year to ¥2,385,372 million, mainly because the higher nuclear capacity factor reduced thermal fuel costs.」
The higher nuclear capacity factor eased pressure from substitute thermal fuel costs, and operating expenses declined 20.3% year on year. - FY2024-Q2MitigatedAnnual report
「On the expenditure side, operating expenses fell by ¥100,542 million, or 12.4%, year on year to ¥710,226 million, mainly because the higher nuclear capacity factor reduced thermal fuel costs.」
The higher nuclear capacity factor eased pressure from substitute thermal fuel costs, and operating expenses declined year on year. - FY2024-Q1MitigatedAnnual report
「On the expenditure side, operating expenses fell by ¥100,542 million, or 12.4%, year on year to ¥710,226 million, mainly because the higher nuclear capacity factor reduced thermal fuel costs.」
The higher nuclear capacity factor reduced thermal fuel costs, easing pressure from substitute thermal costs associated with the lower utilization of nuclear power plants from the previous fiscal year. - FY2023-Q2WorsenedAnnual report
「On the expense side, operating expenses were ¥1,936,124 million, up ¥788,360 million, or 68.7%, year on year. Although the company worked to achieve thorough management efficiency improvements, thermal fuel costs increased owing to the impact of foreign exchange and fuel prices and lower nuclear utilization, while purchased power costs from other companies increased owing to higher procurement costs from the wholesale electricity market.」
The decline in the nuclear capacity factor continues to be explicitly identified as a factor behind higher thermal fuel costs, while nuclear power generation was 56.6% of the year-earlier level. - FY2023-Q1WorsenedAnnual report
「On the expense side, operating expenses were ¥810,769 million, up ¥263,569 million, or 48.2%, year on year. Although the company worked to achieve thorough management efficiency improvements, thermal fuel costs increased owing to the impact of foreign exchange and fuel prices and lower nuclear utilization, while purchased power costs from other companies increased owing to higher procurement costs from the wholesale electricity market.」
The decline in the nuclear capacity factor is explicitly identified as a factor behind higher thermal fuel costs, while nuclear power generation fell to 66.0% of the year-earlier level, increasing pressure from substitute thermal costs associated with the shutdowns and lower utilization. - FY2022-Q3MitigatedAnnual report
「Although thermal fuel costs increased due to the effects of foreign exchange rates and fuel prices, operating expenses fell by ¥179,802 million, or 8.8%, year on year to ¥1,861,439 million, reflecting efforts to improve management efficiency thoroughly and changes in the accounting treatment of renewable energy operations following the application of accounting standards for revenue recognition and other standards.」
The higher nuclear capacity factor is reported, and pressure from substitute thermal costs due to the prolonged nuclear shutdowns has weakened from the level through the previous quarter. However, higher thermal fuel costs due to fuel prices remain. - FY2022-Q2MitigatedAnnual report
「On the expense side, operating expenses were ¥1,147,763 million, down ¥205,513 million, or 15.2%, year on year. Although costs increased owing to foreign exchange and fuel price fluctuations, operating expenses declined due to thorough management efficiency improvements, lower costs resulting from higher nuclear utilization and changes to the accounting treatment for renewable energy associated with the adoption of accounting standards concerning revenue recognition.」
Cost reductions resulting from the higher nuclear capacity factor are reported, and pressure from substitute thermal costs due to the prolonged nuclear shutdowns has weakened from the previous quarter. - FY2022-Q1WorsenedAnnual report
「On the expense side, operating expenses were ¥547,199 million, down ¥105,694 million, or 16.2%, year on year. Despite lower nuclear utilization and the impact of foreign exchange and fuel prices in the energy business, this reflected changes to the accounting treatment for renewable energy associated with the adoption of accounting standards concerning revenue recognition, as well as efforts to thoroughly improve management efficiency.」
The decline in the nuclear capacity factor is explicitly identified as a cost driver for the quarter, while nuclear power generation fell to 86.1% of the year-earlier level. - FY2019-Q3RestatedAnnual report
「On the expense side, operating expenses were ¥2,255,801 million, up ¥190,359 million, or 9.2%, year on year. This reflected higher costs resulting from rising fuel prices and increased electricity sales volume and inter-area and sales to other companies, which outweighed the cost reductions resulting from the resumption of operations at nuclear plants and efforts to thoroughly improve management efficiency.」
Cost reductions from the resumption of nuclear plant operations continue to be reported, and pressure from substitute thermal fuel costs due to the prolonged shutdowns has been partially eased. However, higher costs resulting from rising fuel prices and other factors remain. - FY2019-Q2RestatedAnnual report
「On the expense side, operating expenses were ¥1,501,955 million, up ¥114,712 million, or 8.3%, year on year. This reflected higher costs resulting from rising fuel prices and increased electricity sales volume and inter-area and sales to other companies, which outweighed the cost reductions resulting from the resumption of operations at nuclear plants and efforts to thoroughly improve management efficiency.」
Cost reductions from the resumption of nuclear plant operations continue to be reported, and pressure from substitute thermal fuel costs due to the prolonged shutdowns has been partially eased. However, higher costs resulting from rising fuel prices and other factors remain. - FY2019-Q1RestatedAnnual report
「On the expenditure side, operating expenses were ¥696,986 million, an increase of ¥20,792 million, or 3.1%, from the same period of the previous year. This was despite thorough efforts to improve management efficiency and a reduction in costs resulting from the resumption of operations at nuclear plants, as costs increased due to higher fuel prices and higher inter-area and third-party electricity sales volumes.」
Cost reductions from the resumption of nuclear plant operations continue to be reported, and pressure from substitute thermal fuel costs due to the prolonged shutdowns has been partially eased. However, higher costs resulting from rising fuel prices remain. - FY2018MitigatedAnnual report
「On the expenditure side, despite cost reductions from efforts to achieve thorough management efficiency and the restart of nuclear power plants, operating expenses increased by ¥112,492 million, or 4.0%, from the previous consolidated fiscal year to ¥2,906,081 million due in part to higher fuel prices.」
The cost-reduction benefits from the resumption of nuclear plant operations are reflected in the full-year results, partially easing pressure from substitute thermal fuel costs due to the prolonged shutdowns. - FY2018-Q3RestatedAnnual report
「On the expenditure side, operating expenses increased despite thorough efforts to improve management efficiency and the cost reductions resulting from the resumption of operations at Takahama Power Station Units 3 and 4, as thermal fuel costs increased due to higher fuel prices and other factors.」
The reduction in alternative thermal power fuel costs resulting from the restart of Units 3 and 4 at the Takahama Power Station continues to be reported, while the increase in expenses due to higher fuel prices remains. - FY2018-Q2RestatedAnnual report
「On the expense side, operating expenses were ¥1,387,242 million, up ¥40,277 million, or 3.0%, year on year. This reflected higher fuel costs and raw material costs for the gas and other energy businesses resulting from rising fuel prices, which outweighed the cost reductions from the resumption of operations at Units 3 and 4 of the Takahama Nuclear Power Station and efforts to thoroughly improve management efficiency.」
The reduction in fuel costs from the restart of Units 3 and 4 at the Takahama Power Station continues to be reported, partially easing the pressure from alternative thermal power fuel costs associated with prolonged outages. - FY2018-Q1MitigatedAnnual report
「Although the restart of Units 3 and 4 at the Takahama Power Station reduced fuel costs, operating expenses increased by ¥23,545 million, or 3.6%, year on year to ¥676,193 million, due in part to higher fuel prices, which increased thermal power fuel costs and other expenses.」
The company reports that the restart of Units 3 and 4 at the Takahama Power Station partially reduced the pressure from alternative thermal power fuel costs associated with prolonged nuclear power plant outages. Meanwhile, the increase in expenses due to higher fuel prices remains. - FY2017First statedAnnual report
「If outages at nuclear power plants are prolonged as a result of responses to new regulatory standards, litigation or other factors, the Group's performance may be significantly affected by higher alternative thermal power fuel costs and other factors, because the company has a higher proportion of nuclear power generation than other electric power companies.」
Prolonged nuclear power plant outages due to new regulatory standards, litigation and other factors, and the resulting alternative thermal power fuel costs, are identified as risks.