Changes in Fuel Costs Due to Fluctuations in Rainfall and Snowfall
First written in FY2017. 11 of 22 entries say "Materialised", first in FY2018-Q1. Latest entry: FY2026.
Hokkaido Electric Power Company moved to the "Worse" side of this theme in 2017, 2 years before the typical company in this theme (2019).
2 other companies' latest entry also says "Mitigated".
- FY2026MitigatedAnnual report
「Water flow rate (natural inflow) (%) 103.6」
The water flow rate was 103.6% of the 30-year average, and hydropower generation increased 21.9% year on year. Improved water conditions emerged as a factor reducing fuel costs. - 2026-04-28MitigatedEarnings presentation
「The water flow rate was 103.6%, above normal levels.」
The water flow rate exceeded normal levels and hydroelectric generation increased 21.9% year on year, so hydrological conditions mitigated fuel cost fluctuation risk during the fiscal year. - FY2026-H1MitigatedAnnual report
「Hydropower generation 2,287 24.5 Water flow rate (natural inflow) (%) 101.8」
The water flow rate was 101.8% of the 30-year average, and hydropower generation increased 24.5% year on year. Improved water conditions caused the risk of higher fuel costs due to variations in rainfall and snowfall to emerge as a mitigating factor during the current interim period. - FY2025-H1MaterialisedAnnual report
「Water flow rate (natural inflow) (%) 87.2」
The water flow rate was 87.2% of the 30-year average, and hydropower generation decreased 10.9% year on year. The risk of fluctuations in generation and fuel costs due to deteriorating water conditions appeared in actual results. - FY2024-Q3RestatedAnnual report
「Water flow rate (natural inflow) (%) 103.1」
The water flow rate was 103.1% of the 30-year average, indicating water conditions above normal. Meanwhile, hydropower generation decreased 4.0% year on year, and the risk of fluctuations in generation due to water conditions continued. - FY2024-Q2MaterialisedAnnual report
「Hydropower generation 2,062 △13.0 Water flow rate (natural inflow) (%) 94.0」
The water flow rate was 94.0% of the 30-year average, and hydropower generation decreased 13.0% year on year. The risk of fluctuations in hydropower generation due to deteriorating water conditions continued to appear in actual results. - FY2024-Q1RestatedAnnual report
「Water flow rate (natural inflow) (%) 100.2」
The water flow rate was 100.2% of the 30-year average, indicating normal water conditions. Hydropower generation decreased 2.7% year on year, but no new emergence of higher fuel costs due to low water levels was disclosed. - FY2023-Q2MitigatedAnnual report
「Water flow rate (natural inflow) (%) 106.0」
The water flow rate was 106.0% of the 30-year average, and hydropower generation increased 20.2% year on year. Improved water conditions caused the risk of higher fuel costs due to variations in rainfall and snowfall to emerge as a mitigating factor during the current quarter. - FY2023-Q1MaterialisedAnnual report
「Water flow rate (natural inflow) (%) 97.2」
The water flow rate was 97.2% of the 30-year average, and hydropower generation decreased 14.0% year on year. The deterioration in water conditions appeared in actual results. - FY2022-Q2MaterialisedAnnual report
「Water flow rate (natural inflow) (%) 88.7」
The water flow rate was 88.7% of the 30-year average, and the deterioration in water conditions appeared in actual results. Hydropower generation also decreased 2.0% year on year, indicating that the risk of fluctuations in hydropower generation due to variations in rainfall and snowfall had materialized. - FY2022-Q1MitigatedAnnual report
「This was due to deteriorating earnings resulting from higher fuel prices since April of the current year, despite lower fuel costs resulting from increased hydroelectric generation and other factors.」
Higher hydropower generation reduced fuel costs, and the risk of higher fuel costs due to variations in water conditions emerged as a mitigating factor during the current quarter. In actual power generation and electricity received and supplied, hydropower generation increased 25.0% year on year, and the water flow rate was 112.1%. - FY2020-Q3MaterialisedAnnual report
「This was due to higher fuel costs resulting from lower hydropower generation and higher repair expenses associated with measures to address aging facilities in order to ensure a stable supply, despite a decrease in depreciation and amortization expense resulting from changes in depreciation methods and other factors.」
The decline in hydropower generation materialized in actual results as higher fuel costs, and the fuel cost risk from variations in water conditions emerged during the current quarter. - FY2020-Q2MaterialisedAnnual report
「Operating income was ¥1,283.9 million, down ¥946.3 million (42.4%) from the same cumulative quarter of the previous year. This was mainly due to higher fuel costs resulting from lower hydropower generation, despite decreases in depreciation and amortization expense resulting from changes in depreciation methods and other factors.」
Hydropower generation was 73.1% of the level in the same period of the previous year, while the water flow rate was only 85.0%. The decline in hydropower generation materialized in actual results as higher fuel costs. - FY2020-Q1MaterialisedAnnual report
「The natural-inflow water flow rate was 84.1% of the 30-year average for the cumulative period from FY1988 to FY2017 at the Company.」
The water flow rate was 84.1%, resulting in lower hydropower generation than in the same period of the previous year. The risk that variations in water conditions affect fuel costs and earnings materialized during the current quarter. - FY2019RestatedAnnual report
「Annual rainfall and snowfall can affect earnings, as abundant water reduces fuel costs while low water levels increase them.」
The Company continues to identify the risk of fluctuations in hydropower generation and fuel costs due to variations in rainfall, snowfall and water conditions. - FY2019-Q3RestatedAnnual report
「The natural-inflow water flow rate was 116.1% of the 30-year average for the cumulative period from FY1987 to FY2016 at the Company.」
The water flow rate was 116.1%, and the increase in hydropower generation due to abundant water helped contain fuel costs. - FY2019-Q1MitigatedAnnual report
「The natural-inflow water flow rate was 110.7% of the 30-year average for the cumulative period from FY1987 to FY2016 at the Company.」
The water flow rate was 110.7%, and the resulting decrease in fuel costs due to abundant water mitigated the impact of higher fuel costs caused by low water levels, which had emerged in the previous fiscal year, during the current quarter. - FY2018MaterialisedAnnual report
「This was due to higher fuel prices, higher fuel costs caused by low water levels, and the effects of the feed-in tariff scheme for renewable energy, among other factors.」
Higher fuel costs due to low water levels actually occurred as a factor behind the increase in operating expenses for the fiscal year. - FY2018-Q3MaterialisedAnnual report
「On the expense side, repair costs declined due in part to the lower number of thermal power plants undergoing periodic inspections, under the company’s ongoing efforts to achieve thorough efficiency improvements across its operations. However, due to higher fuel prices, increased fuel costs caused by low water levels, and the impact of the feed-in tariff scheme for renewable energy, operating expenses increased by ¥16.311 billion year on year to ¥485.425 billion.」
Higher fuel costs due to low water levels materialized as a factor behind the ¥16,311 million year-on-year increase in operating expenses, together with higher fuel prices and other factors. - FY2018-Q2MaterialisedAnnual report
「On the expense side, under continued efforts to achieve thorough efficiency improvements across the business, repair expenses decreased due in part to a reduction in the number of thermal power plants undergoing periodic inspections. However, operating expenses increased by ¥16,624 million from the same quarter of the previous year on a consolidated cumulative basis to ¥317,319 million, owing to higher fuel costs resulting from rising fuel prices and drought, as well as the impact of the renewable energy feed-in tariff scheme.」
Higher fuel costs due to low water levels materialized as a factor behind increased operating expenses, together with higher fuel prices and other factors. - FY2018-Q1MaterialisedAnnual report
「On the expense side, although the company continued to pursue thorough efficiency improvements across the business, operating expenses increased by ¥14,092 million from the same quarter of the previous year on a consolidated cumulative basis to ¥160,305 million, due mainly to higher fuel costs resulting from rising fuel prices and the reversal of the previous year's abundant water supplies.」
The reversal of the previous year’s abundant water conditions became a factor behind higher fuel costs, and the fuel cost risk from variations in rainfall, snowfall and water conditions materialized as an actual increase in expenses. - FY2017First statedAnnual report
「Annual rainfall and snowfall can affect earnings, as abundant water reduces fuel costs while low water levels increase them.」
The risk that variations in rainfall and snowfall affect earnings through hydropower generation and fuel costs is disclosed as a separate risk item.