Ensuring Equipment Reliability and Stable Operations at Power Generation Facilities
First written in FY2016. 8 of 32 entries say "Advanced", first in FY2018-Q1. Latest entry: 2026-07-31.
0 other companies' latest entry also says "Other".
- 2026-07-31OtherEarnings
「On the revenue side for the first quarter of the current consolidated cumulative period, although the hydroelectric water inflow rate declined from 105% to 94% and the volume of electricity sold declined for power procured from the wholesale electricity market and other sources, net sales (operating revenue) increased 12.0% from the first quarter of the previous consolidated cumulative period to ¥280.2 billion, due mainly to the higher utilization rate of thermal power stations, from 43% to 49%, and an increase in electricity sold in Thailand.」
The hydroelectric water inflow rate declined, while the utilization rate of thermal power stations increased, resulting in changes in power generation operating performance. - FY2026Higher thermal utilization rate and lower electricity sales volumeAnnual report
「Thermal power sales totaled 41.8 billion kWh, up 1.5% from the previous fiscal year, due mainly to the higher plant utilization rate (58% → 67%). Sales of electricity procured from the wholesale electricity market and other sources totaled 15.0 billion kWh, down 9.3% from the previous fiscal year. Total electricity sales for the power generation business declined 1.7% to 66.7 billion kWh.」
The thermal power plant utilization rate rose from 58% to 67%, but total electricity sales for the power generation business declined 1.7% due to lower sales of procured electricity. - FY2026-H1AdvancedAnnual report
「Electricity sales from renewable energy totaled 5.8 billion kWh, up 2.6% from the previous interim consolidated accounting period, due mainly to the higher hydro inflow rate (89% → 92%). Thermal power sales totaled 19.2 billion kWh, up 8.9%, due mainly to the higher plant utilization rate (50% → 62%).」
Hydro inflows and the thermal power plant utilization rate exceeded the levels in the same period of the previous year, increasing electricity sales from renewable energy and thermal power, respectively. - FY2025-H1AdvancedAnnual report
「In the power generation business, in addition to higher electricity sales resulting from the higher thermal power plant utilization rate (46% → 50%) and increased sales of electricity procured from the wholesale electricity market and other sources, the capacity market commenced, among other factors,」
The thermal power plant utilization rate rose from 46% to 50%, and total electricity sales for the power generation business increased 15.3% year on year to 31.5 billion kWh. - FY2024Lower thermal utilization rate and electricity sales for the electric power businessAnnual report
「On the revenue side for the fiscal year, although electricity sales from overseas operations increased, revenue declined 31.7% from the previous fiscal year to ¥1,257.9 billion, due to lower electricity sales resulting from the lower utilization rate of thermal power plants in the electric power business (standalone: 65% → 55%) and lower electricity sales prices, among other factors.」
The standalone thermal power plant utilization rate declined from 65% to 55%, and total electricity sales for the electric power business also declined 11.8%. - FY2024-Q3Lower thermal utilization rate and electricity salesAnnual report
「Electricity sales in the electric power business totaled 6.7 billion kWh, down 1.4% from the third quarter of the previous fiscal year, as the hydro inflow rate fell below the level in the third quarter of the previous fiscal year (92% → 91%), among other factors. Thermal power sales totaled 27.7 billion kWh, down 19.8%, as the plant utilization rate fell below the level in the third quarter of the previous fiscal year, among other factors. Sales of electricity procured from the wholesale electricity market and other sources totaled 8.3 billion kWh, down 12.1% from the third quarter of the previous fiscal year. Total electricity sales for the electric power business declined 15.5% to 43.7 billion kWh.」
The thermal power plant utilization rate declined from 65% in the same period of the previous fiscal year to 52%, and thermal power sales fell 19.8% year on year. Hydro sales and sales of procured electricity also declined, resulting in a 15.5% decrease in total electricity sales for the electric power business. - FY2024-Q2Lower thermal utilization rate and electricity salesAnnual report
「Electricity sales in the electric power business totaled 5.2 billion kWh, down 1.0% from the second quarter of the previous fiscal year, as the hydro inflow rate fell below the level in the second quarter of the previous fiscal year (96% → 92%), among other factors. Thermal power sales totaled 16.1 billion kWh, down 25.0%, as the plant utilization rate fell below the level in the second quarter of the previous fiscal year, among other factors. Sales of electricity procured from the wholesale electricity market and other sources totaled 5.5 billion kWh, down 11.4% from the second quarter of the previous fiscal year. Total electricity sales for the electric power business declined 18.3% to 27.3 billion kWh.」
The standalone thermal power plant utilization rate declined from 61% to 46%, and thermal power sales fell 25.0%. Hydro inflows and sales of procured electricity also declined, resulting in an 18.3% year-on-year decrease in total electricity sales for the electric power business. - FY2024-Q1Lower thermal utilization rate, higher hydro inflow rate and lower sales of procured electricityAnnual report
「Revenue from the electric power business declined 13.0% from the first quarter of the previous fiscal year to ¥281.3 billion, due to lower electricity sales resulting from the lower utilization rate of thermal power plants (standalone: 47% → 33%) and lower electricity sales prices, among other factors. Electricity sales from hydropower totaled 2.7 billion kWh, up 7.5% from the first quarter of the previous fiscal year, as the hydro inflow rate exceeded the level in the first quarter of the previous fiscal year (91% → 97%), among other factors. Thermal power sales totaled 5.7 billion kWh, down 30.9%, as the plant utilization rate fell below the level in the first quarter of the previous fiscal year, among other factors. Sales of electricity procured from the wholesale electricity market and other sources totaled 2.4 billion kWh, down 13.9% from the first quarter of the previous fiscal year. Total electricity sales for the electric power business declined 19.7% to 11.3 billion kWh.」
The thermal power plant utilization rate declined from 47% to 33%, and thermal power sales and sales of procured electricity also declined. Although the hydro inflow rate rose from 91% to 97%, total electricity sales for the electric power business declined 19.7% year on year. - FY2023-Q3Lower hydro and procured electricity sales, higher thermal utilization rate and lower total electricity salesAnnual report
「Electricity sales in the electric power business totaled 6.8 billion kWh, down 9.4% from the third quarter of the previous fiscal year, as the hydro inflow rate fell below the level in the third quarter of the previous fiscal year (101% → 92%), among other factors. Thermal power sales totaled 34.5 billion kWh, up 3.9%, as the plant utilization rate exceeded the level in the third quarter of the previous fiscal year (standalone: 62% → 65%), among other factors. Sales of electricity procured from the wholesale electricity market and other sources totaled 9.5 billion kWh, down 21.1% from the third quarter of the previous fiscal year. Total electricity sales for the electric power business declined 3.8% to 51.7 billion kWh.」
Hydro inflows and sales of procured electricity declined, while the thermal power plant utilization rate rose from 62% to 65%. Total electricity sales for the electric power business declined 3.8% year on year. - FY2023-Q2Lower hydro electricity sales, higher thermal utilization rate and lower total electricity salesAnnual report
「Electricity sales in the electric power business totaled 5.3 billion kWh, down 10.5% from the second quarter of the previous fiscal year, as the hydro inflow rate fell below the level in the second quarter of the previous fiscal year (105% → 96%), among other factors. Thermal power sales totaled 21.5 billion kWh, up 4.7%, as the plant utilization rate exceeded the level in the second quarter of the previous fiscal year (standalone: 57% → 61%), among other factors. Sales of electricity procured from the wholesale electricity market and other sources totaled 6.2 billion kWh, down 24.2% from the second quarter of the previous fiscal year. Total electricity sales for the electric power business declined 4.8% to 33.5 billion kWh.」
Hydro inflows, hydro electricity sales and sales of procured electricity declined, while the thermal power plant utilization rate rose from 57% to 61%. Total electricity sales for the electric power business declined 4.8% year on year. - FY2023-Q1Lower hydro inflow rate, higher thermal utilization rate and lower electricity salesAnnual report
「Electricity sales in the electric power business totaled 2.5 billion kWh, down 6.6% from the first quarter of the previous fiscal year, as the hydro inflow rate fell below the level in the first quarter of the previous fiscal year (98% → 91%), among other factors. Thermal power sales totaled 8.3 billion kWh, up 6.2%, as the plant utilization rate exceeded the level in the first quarter of the previous fiscal year (standalone: 44% → 47%), among other factors.」
The hydro inflow rate declined from 98% to 91%, while the thermal power plant utilization rate rose from 44% to 47%. Total electricity sales for the electric power business, including hydro and thermal power, declined 4.5% year on year. - FY2022Lower thermal utilization rate and facility problems, and higher hydroelectric water inflow rateAnnual report
「On the revenue side for the fiscal year, although electricity sales from thermal power generation declined substantially due to the lower utilization rate of thermal power plants in the electric power business (standalone: 75% → 67%),」
For the full year, the utilization rate of thermal power plants declined from 75% to 67%, reducing electricity sales from thermal power generation. The disclosure also states that lower plant utilization was caused by equipment problems and other factors. - FY2022-Q3Lower thermal utilization rate and facility problems, and higher hydroelectric water inflow rateAnnual report
「Electricity sales volume in the electric power business increased 10.6% year on year to 7.6 billion kWh for hydroelectric power, mainly because the water inflow rate exceeded that in the third quarter of the previous fiscal year (92% → 101%). Sales of electricity procured from the wholesale electricity market and other sources increased 53.1% year on year to 12.0 billion kWh. Thermal electricity sales volume decreased 15.0% year on year to 33.2 billion kWh, mainly because the plant utilization rate declined due to facility problems and other factors. Overall electricity sales volume in the electric power business decreased 1.7% year on year to 53.8 billion kWh.」
The hydroelectric water inflow rate rose from 92% to 101%, while the utilization rate of thermal power plants fell from 76% to 62% due to facility problems and other factors; thermal electricity sales volume decreased 15.0%. - FY2022-Q1Lower thermal utilization rate due to facility problems, and higher hydroelectric water inflow rateAnnual report
「Electricity sales volume in the electric power business increased 18.2% year on year to 2.7 billion kWh for hydroelectric power, mainly because the water inflow rate exceeded that in the first quarter of the previous fiscal year (81% → 98%). Sales of electricity procured from the wholesale electricity market and other sources increased 88.4% year on year to 3.8 billion kWh. Thermal electricity sales volume decreased 29.7% year on year to 7.8 billion kWh, mainly because the plant utilization rate declined due to facility problems and other factors. Overall electricity sales volume in the electric power business decreased 7.0% year on year to 14.7 billion kWh.」
The hydroelectric water inflow rate rose from 81% to 98%, while the utilization rate of thermal power plants fell from 65% to 44% due to facility problems and other factors; thermal electricity sales volume decreased 29.7% year on year. - FY2021-Q3Higher thermal utilization rate and lower hydroelectric water inflow rateAnnual report
「Electricity sales volume in the electric power business decreased 2.5% year on year to 6.8 billion kWh for hydroelectric power, mainly because the water inflow rate fell below that in the third quarter of the previous fiscal year (98% → 92%). For thermal power, electricity sales volume increased 4.9% year on year to 39.1 billion kWh, partly because operations commenced at Takehara Thermal Power Station’s new Unit 1 and the plant utilization rate exceeded that in the third quarter of the previous fiscal year (company-only: 74% → 76%). Sales of electricity procured from the wholesale electricity market to retail electricity providers decreased, but sales of electricity procured from Kashima Thermal Power Station’s Unit 2 increased. As a result, overall electricity sales volume in the electric power business increased 2.8% year on year to 54.7 billion kWh.」
The hydroelectric water inflow rate fell from 98% to 92%, while the utilization rate of thermal power plants rose from 74% to 76%. The start of commercial operations at Takehara Thermal Power Station’s new Unit 1 and other facilities, as well as higher sales of electricity procured from Kashima Thermal Power Station’s Unit 2, contributed to a 2.8% year-on-year increase in overall electricity sales volume. - FY2021-Q2AdvancedAnnual report
「Electricity sales volume in the electric power business increased 6.2% year on year to 5.2 billion kWh for hydroelectric power, mainly because the water inflow rate exceeded that in the second quarter of the previous fiscal year (91% → 93%). For thermal power, electricity sales volume increased 9.3% year on year to 26.1 billion kWh, mainly because operations commenced at Takehara Thermal Power Station’s new Unit 1 and the plant utilization rate exceeded that in the second quarter of the previous fiscal year (company-only: 71% → 76%).」
The hydroelectric water inflow rate rose from 91% to 93%, and the utilization rate of thermal power plants rose from 71% to 76%. The start of commercial operations at Takehara Thermal Power Station’s new Unit 1 also contributed, and hydroelectric and thermal electricity sales volume exceeded the previous year’s level. - FY2021-Q1AdvancedAnnual report
「Electricity sales volume in the electric power business increased 10.8% year on year to 2.3 billion kWh for hydroelectric power, mainly because the water inflow rate exceeded that in the first quarter of the previous fiscal year (79% → 81%). For thermal power, electricity sales volume increased 14.7% year on year to 11.2 billion kWh, mainly because the plant utilization rate exceeded that in the first quarter of the previous fiscal year (company-only: 57% → 65%).」
The hydroelectric water inflow rate rose from 79% to 81%, and the utilization rate of thermal power plants rose from 57% to 65%; hydroelectric and thermal electricity sales volume exceeded the previous year’s level. - FY2020-Q3Lower hydroelectric and thermal utilization rates, and higher sales of procured electricityAnnual report
「Electricity sales volume in the electric power business decreased 12.1% year on year to 7.0 billion kWh for hydroelectric power, mainly because the water inflow rate fell below that in the third quarter of the previous fiscal year (110% → 98%). For thermal power, electricity sales volume also decreased 8.2% year on year to 37.3 billion kWh, mainly because the plant utilization rate fell below that in the third quarter of the previous fiscal year (company-only: 78% → 74%). Overall electricity sales volume in the electric power business increased 3.7% year on year to 53.2 billion kWh, partly because sales of electricity procured from the wholesale electricity market and other sources to retail electricity providers increased.」
The hydroelectric water inflow rate and thermal plant utilization rate declined, reducing electricity sales volume for both, while overall electricity sales volume increased 3.7% year on year due to higher sales of electricity procured from the wholesale electricity market and other sources to retail electricity providers. - FY2020-Q2Lower hydroelectric and thermal electricity sales volume, and higher sales of procured electricityAnnual report
「Electricity sales volume in the electric power business decreased 16.2% year on year to 4.9 billion kWh for hydroelectric power, mainly because the water inflow rate fell below that in the second quarter of the previous fiscal year (113% → 91%). For thermal power, electricity sales volume also decreased 7.8% year on year to 23.9 billion kWh, mainly because the plant utilization rate fell below that in the second quarter of the previous fiscal year (company-only: 75% → 71%). Overall electricity sales volume in the electric power business increased 4.4% year on year to 34.8 billion kWh, partly because sales of electricity procured from the wholesale electricity market and other sources increased.」
The hydroelectric water inflow rate fell from 113% to 91%, and the utilization rate of thermal power plants fell from 75% to 71%; overall electricity sales volume increased 4.4% year on year due to higher sales of electricity procured from the wholesale electricity market and other sources. - FY2020-Q1Lower thermal utilization rate and hydroelectric water inflow rate, and higher sales of procured electricityAnnual report
「Electricity sales volume in the electric power business decreased 27.1% year on year to 2.1 billion kWh for hydroelectric power, mainly because the water inflow rate fell below that in the first quarter of the previous fiscal year (105% → 79%). For thermal power, electricity sales volume also decreased 9.9% year on year to 9.7 billion kWh, mainly because the plant utilization rate fell below that in the first quarter of the previous fiscal year (company-only: 63% → 57%). Overall electricity sales volume in the electric power business increased 4.1% year on year to 14.9 billion kWh, partly because sales of electricity procured from the wholesale electricity market and other sources increased.」
The hydroelectric water inflow rate fell from 105% to 79%, and the utilization rate of thermal power plants fell from 63% to 57%; overall electricity sales volume increased 4.1% year on year due to higher sales of electricity procured from the wholesale electricity market and other sources. - FY2019Lower thermal utilization rate and higher hydroelectric water inflow rateAnnual report
「Electricity sales volume in the electric power business decreased 3.2% year on year to 54.9 billion kWh for thermal power, mainly because the plant utilization rate fell below that in the previous fiscal year (company-only: 80% → 79%). For hydroelectric power, electricity sales volume increased 5.0% year on year to 9.7 billion kWh, mainly because the water inflow rate exceeded that in the previous fiscal year (105% → 106%). Overall electricity sales volume in the electric power business increased 3.4% year on year to 69.3 billion kWh, partly because sales of electricity procured from the wholesale electricity market and other sources increased.」
For the full year, the utilization rate of thermal power plants fell from 80% to 79%, while the hydroelectric water inflow rate rose from 105% to 106%; overall electricity sales volume increased 3.4%. - FY2019-Q3Lower thermal utilization rate and higher hydroelectric water inflow rateAnnual report
「Electricity sales volume in the electric power business decreased 3.7% year on year to 40.6 billion kWh for thermal power, mainly because the plant utilization rate fell below that in the third quarter of the previous fiscal year (company-only: 79% → 78%). For hydroelectric power, electricity sales volume increased 11.6% year on year to 8.0 billion kWh, mainly because the water inflow rate exceeded that in the third quarter of the previous fiscal year (102% → 110%). Overall electricity sales volume in the electric power business increased 2.4% year on year to 51.3 billion kWh, partly because sales of electricity procured from the wholesale electricity market and other sources increased.」
The utilization rate of thermal power plants fell from 79% to 78%, while the hydroelectric water inflow rate rose from 102% to 110%; overall electricity sales volume increased 2.4% year on year. - FY2019-Q2Lower thermal utilization rate and higher hydroelectric water inflow rateAnnual report
「Electricity sales volume in the electric power business decreased 3.9% year on year to 25.9 billion kWh for thermal power, mainly because the plant utilization rate fell below that in the second quarter of the previous fiscal year (company-only: 76% → 75%). For hydroelectric power, electricity sales volume increased 21.4% year on year to 5.9 billion kWh, mainly because the water inflow rate exceeded that in the second quarter of the previous fiscal year (94% → 113%). Overall electricity sales volume in the electric power business increased 3.2% year on year to 33.3 billion kWh, partly because sales of electricity procured from the wholesale electricity market and other sources increased.」
The utilization rate of thermal power plants fell from 76% to 75%, while the hydroelectric water inflow rate rose from 94% to 113%; overall electricity sales volume increased 3.2% year on year. - FY2019-Q1AdvancedAnnual report
「Electricity sales volume in the electric power business increased 16.8% year on year to 2.8 billion kWh for hydroelectric power, mainly because the water inflow rate exceeded that in the first quarter of the previous fiscal year (94% → 105%). For thermal power, electricity sales volume increased 2.1% year on year to 11.2 billion kWh, mainly because the plant utilization rate exceeded that in the first quarter of the previous fiscal year (company-only: 61% → 63%). Overall electricity sales volume in the electric power business increased 4.8% year on year to 14.3 billion kWh.」
The hydroelectric water inflow rate rose from 94% to 105%, and the company-only utilization rate of thermal power plants rose from 61% to 63%; overall electricity sales volume increased 4.8% year on year. - FY2018-Q3AdvancedAnnual report
「Revenue increased due to higher fuel prices in the electric power business and the utilization rate of thermal power plants exceeding that in the third quarter of the previous fiscal year (company-only: 74% → 79%), among other factors. Revenue from operations increased 19.5% year on year to ¥634.6 billion.」
The company-only utilization rate of thermal power plants rose from 74% in the same period of the previous year to 79%, while revenue from operations increased 19.5% year on year. - FY2018-Q2AdvancedAnnual report
「Revenue increased due to higher fuel prices in the electric power business and the utilization rate of thermal power plants exceeding that in the second quarter of the previous fiscal year (company-only: 70% → 76%), among other factors. Revenue from operations increased 18.3% year on year to ¥410.2 billion.」
The company-only utilization rate of thermal power plants rose from 70% in the same period of the previous year to 76%, while revenue from operations increased 18.3% year on year. - FY2018-Q1AdvancedAnnual report
「The utilization rate of thermal power plants exceeded that in the first quarter of the previous fiscal year (company-only: 56% → 61%), among other factors. As a result, revenue from operations increased 13.2% year on year to ¥189.7 billion.」
The company-only utilization rate of thermal power plants rose from 56% in the same period of the previous year to 61%. - FY2017RestatedAnnual report
「Amid greater earnings volatility, we believe that ensuring the stable operation of power generation facilities is the most important form of risk management. To ensure stable operations, the Group continuously pursues the optimization of facility maintenance and operations and will enhance the value of its facilities.」
The company has reiterated its policy of prioritizing the stable operation of power generation facilities and the optimization of maintenance and operations in response to earnings volatility following deregulation. - FY2017-Q3RestatedAnnual report
「In light of these circumstances, we changed the depreciation method for facilities used in our domestic business to the straight-line method in order to more appropriately reflect their actual stable operation.」
The company continues to outline its approach to the stable operation and management of facilities used in its domestic business, based on the post-deregulation domestic market. - FY2017-Q2RestatedAnnual report
「In response to these circumstances, we made the stable operation of our coal-fired and hydroelectric power generation facilities and transmission and transformation facilities one of the priority initiatives in our medium-term management plan. By operating our price-competitive power generation facilities stably in the domestic market as deregulation progresses, we aim to achieve further growth while fulfilling the role expected of us in revitalizing the wholesale electricity market, which is essential to the development of a competitive market.」
The company has reiterated its policy of prioritizing the stable operation of price-competitive facilities in the domestic market following deregulation, as well as the stable operation of coal-fired, hydroelectric, transmission and transformation facilities. - FY2017-Q1RestatedAnnual report
「In response to these circumstances, we made the stable operation of our coal-fired and hydroelectric power generation facilities and transmission and transformation facilities one of the priority initiatives in our medium-term management plan. By operating our price-competitive power generation facilities stably in the domestic market as deregulation progresses, we aim to achieve further growth while fulfilling the role expected of us in revitalizing the wholesale electricity market, which is essential to the development of a competitive market.」
The company has designated the stable operation of its coal-fired, hydroelectric, transmission and transformation facilities as one of the priority initiatives in its medium-term management plan. - FY2016First statedAnnual report
「We believe that ensuring the stable operation of power generation facilities is the most important form of risk management. To ensure stable operations, the Group continuously pursues the optimization of facility maintenance and operations and will enhance the value of its facilities.」
The company has indicated a policy of responding to earnings volatility following deregulation through the optimization of facility maintenance and operations.