Half-year report · HY
9513.TEDINET S100WY1Y
Period2025-04-01 → 2025-09-30
Filed2025-11-04
StandardJapan GAAP
ConsolidatedYes
Data checks14 of 14 passed
Key figures · 44
| Metric | Value | Period | Scope | Source row |
|---|---|---|---|---|
| Revenue | ¥571.4bn | 2025-04-01 → 2025-09-30 | Cons. | Operating revenue1 |
| Revenue | ¥1.32T | 2024-04-01 → 2025-03-31 | Cons. | Operating revenue1 (5-year summary) |
| Revenue | ¥640.7bn | 2024-04-01 → 2024-09-30 | Cons. | Operating revenue1 |
| Operating income | ¥53.6bn | 2025-04-01 → 2025-09-30 | Cons. | Operating income |
| Operating income | ¥70.8bn | 2024-04-01 → 2024-09-30 | Cons. | Operating income |
| Ordinary income | ¥96.4bn | 2025-04-01 → 2025-09-30 | Cons. | Ordinary income |
| Ordinary income | ¥140.1bn | 2024-04-01 → 2025-03-31 | Cons. | Ordinary income loss (5-year summary) |
| Ordinary income | ¥71.1bn | 2024-04-01 → 2024-09-30 | Cons. | Ordinary income |
| Profit before tax | ¥96.4bn | 2025-04-01 → 2025-09-30 | Cons. | Income before income taxes |
| Profit before tax | ¥71.1bn | 2024-04-01 → 2024-09-30 | Cons. | Income before income taxes |
| Net income (owners) | ¥63.1bn | 2025-04-01 → 2025-09-30 | Cons. | Profit loss attributable to owners of parent |
| Net income (owners) | ¥92.5bn | 2024-04-01 → 2025-03-31 | Cons. | Profit loss attributable to owners of parent (5-year summary) |
| Net income (owners) | ¥48.3bn | 2024-04-01 → 2024-09-30 | Cons. | Profit loss attributable to owners of parent |
| Net income | ¥67.8bn | 2025-04-01 → 2025-09-30 | Cons. | Profit loss |
| Net income | ¥49.7bn | 2024-04-01 → 2024-09-30 | Cons. | Profit loss |
| Total assets | ¥3.60T | at 2025-09-30 | Cons. | Assets |
| Total assets | ¥3.67T | at 2025-03-31 | Cons. | Assets |
| Total assets | ¥3.69T | at 2024-09-30 | Cons. | Total assets (5-year summary) |
| Total liabilities | ¥2.14T | at 2025-09-30 | Cons. | Liabilities |
| Total liabilities | ¥2.21T | at 2025-03-31 | Cons. | Liabilities |
| Net assets / equity | ¥1.46T | at 2025-09-30 | Cons. | Net assets |
| Net assets / equity | ¥1.46T | at 2025-03-31 | Cons. | Net assets |
| Net assets / equity | ¥1.44T | at 2024-09-30 | Cons. | Net assets (5-year summary) |
| Cash and deposits | ¥317.9bn | at 2025-09-30 | Cons. | Cash and deposits |
| Cash and deposits | ¥309.0bn | at 2025-03-31 | Cons. | Cash and deposits |
| Cash & equivalents | ¥313.2bn | at 2025-09-30 | Cons. | Cash and cash equivalents |
| Cash & equivalents | ¥373.1bn | at 2025-03-31 | Cons. | Cash and cash equivalents |
| Cash & equivalents | ¥342.6bn | at 2024-09-30 | Cons. | Cash and cash equivalents |
| Cash & equivalents | ¥370.7bn | at 2024-03-31v | Cons. | Cash and cash equivalents |
| Operating cash flow | ¥50.6bn | 2025-04-01 → 2025-09-30 | Cons. | Net cash provided by used in operating activities |
| Operating cash flow | ¥250.3bn | 2024-04-01 → 2025-03-31 | Cons. | Net cash provided by used in operating activities (5-year summary) |
| Operating cash flow | ¥85.6bn | 2024-04-01 → 2024-09-30 | Cons. | Net cash provided by used in operating activities |
| Investing cash flow | −¥56.3bn | 2025-04-01 → 2025-09-30 | Cons. | Net cash provided by used in investment activities |
| Investing cash flow | −¥122.8bn | 2024-04-01 → 2025-03-31 | Cons. | Net cash provided by used in investing activities (5-year summary) |
| Investing cash flow | −¥64.9bn | 2024-04-01 → 2024-09-30 | Cons. | Net cash provided by used in investment activities |
| Financing cash flow | −¥45.4bn | 2025-04-01 → 2025-09-30 | Cons. | Net cash provided by used in financing activities |
| Financing cash flow | −¥133.7bn | 2024-04-01 → 2025-03-31 | Cons. | Net cash provided by used in financing activities (5-year summary) |
| Financing cash flow | −¥57.5bn | 2024-04-01 → 2024-09-30 | Cons. | Net cash provided by used in financing activities |
| EPS (basic) | ¥345.96 | 2025-04-01 → 2025-09-30 | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥505.64 | 2024-04-01 → 2025-03-31 | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥264.31 | 2024-04-01 → 2024-09-30 | Cons. | Basic earnings loss per share (5-year summary) |
| Equity ratio | 37.4% | at 2025-09-30 | Cons. | Equity to asset ratio (5-year summary) |
| Equity ratio | 36.4% | at 2025-03-31 | Cons. | Equity to asset ratio (5-year summary) |
| Equity ratio | 35.6% | at 2024-09-30 | Cons. | Equity to asset ratio (5-year summary) |
Periods use the dates stated in the filing. d = earlier-year period dated by calendar; v = that date confirmed by the company's own earlier filing.
Segments · 52
| Segment | Item | Period | Value |
|---|---|---|---|
| Otherother segments | revenue | 2025-04-01 → 2025-09-30 | ¥7.9bn |
| Otherother segments | revenue external | 2025-04-01 → 2025-09-30 | ¥7.4bn |
| Otherother segments | revenue intersegment | 2025-04-01 → 2025-09-30 | ¥470m |
| Otherother segments | segment ordinary income | 2025-04-01 → 2025-09-30 | ¥165m |
| Reconciling Itemsreconciling | revenue | 2025-04-01 → 2025-09-30 | −¥19.7bn |
| Reconciling Itemsreconciling | revenue intersegment | 2025-04-01 → 2025-09-30 | −¥19.7bn |
| Reconciling Itemsreconciling | segment ordinary income | 2025-04-01 → 2025-09-30 | ¥626m |
| Electric Power Surroundings Relatedreportable segment | revenue | 2025-04-01 → 2025-09-30 | ¥33.0bn |
| Electric Power Surroundings Relatedreportable segment | revenue external | 2025-04-01 → 2025-09-30 | ¥20.6bn |
| Electric Power Surroundings Relatedreportable segment | revenue intersegment | 2025-04-01 → 2025-09-30 | ¥12.4bn |
| Electric Power Surroundings Relatedreportable segment | segment ordinary income | 2025-04-01 → 2025-09-30 | ¥5.4bn |
| Overseasreportable segment | revenue | 2025-04-01 → 2025-09-30 | ¥109.6bn |
| Overseasreportable segment | revenue external | 2025-04-01 → 2025-09-30 | ¥109.6bn |
| Overseasreportable segment | segment ordinary income | 2025-04-01 → 2025-09-30 | ¥60.4bn |
| Power Generationreportable segment | revenue | 2025-04-01 → 2025-09-30 | ¥415.9bn |
| Power Generationreportable segment | revenue external | 2025-04-01 → 2025-09-30 | ¥409.4bn |
| Power Generationreportable segment | revenue intersegment | 2025-04-01 → 2025-09-30 | ¥6.5bn |
| Power Generationreportable segment | segment ordinary income | 2025-04-01 → 2025-09-30 | ¥24.9bn |
| Transmissionand Transformationreportable segment | revenue | 2025-04-01 → 2025-09-30 | ¥24.7bn |
| Transmissionand Transformationreportable segment | revenue external | 2025-04-01 → 2025-09-30 | ¥24.4bn |
| Transmissionand Transformationreportable segment | revenue intersegment | 2025-04-01 → 2025-09-30 | ¥290m |
| Transmissionand Transformationreportable segment | segment ordinary income | 2025-04-01 → 2025-09-30 | ¥4.9bn |
| Total Of Reportable Segments And Otherssegment total | revenue | 2025-04-01 → 2025-09-30 | ¥591.1bn |
| Total Of Reportable Segments And Otherssegment total | revenue external | 2025-04-01 → 2025-09-30 | ¥571.4bn |
| Total Of Reportable Segments And Otherssegment total | revenue intersegment | 2025-04-01 → 2025-09-30 | ¥19.7bn |
| Total Of Reportable Segments And Otherssegment total | segment ordinary income | 2025-04-01 → 2025-09-30 | ¥95.7bn |
| Otherother segments | revenue | 2024-04-01 → 2024-09-30 | ¥8.6bn |
| Otherother segments | revenue external | 2024-04-01 → 2024-09-30 | ¥8.2bn |
| Otherother segments | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥397m |
| Otherother segments | segment ordinary income | 2024-04-01 → 2024-09-30 | ¥170m |
| Reconciling Itemsreconciling | revenue | 2024-04-01 → 2024-09-30 | −¥22.6bn |
| Reconciling Itemsreconciling | revenue intersegment | 2024-04-01 → 2024-09-30 | −¥22.6bn |
| Reconciling Itemsreconciling | segment ordinary income | 2024-04-01 → 2024-09-30 | ¥75m |
| Electric Power Surroundings Relatedreportable segment | revenue | 2024-04-01 → 2024-09-30 | ¥45.9bn |
| Electric Power Surroundings Relatedreportable segment | revenue external | 2024-04-01 → 2024-09-30 | ¥31.3bn |
| Electric Power Surroundings Relatedreportable segment | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥14.6bn |
| Electric Power Surroundings Relatedreportable segment | segment ordinary income | 2024-04-01 → 2024-09-30 | ¥13.9bn |
| Overseasreportable segment | revenue | 2024-04-01 → 2024-09-30 | ¥132.7bn |
| Overseasreportable segment | revenue external | 2024-04-01 → 2024-09-30 | ¥132.7bn |
| Overseasreportable segment | segment ordinary income | 2024-04-01 → 2024-09-30 | ¥12.6bn |
| Power Generationreportable segment | revenue | 2024-04-01 → 2024-09-30 | ¥451.1bn |
| Power Generationreportable segment | revenue external | 2024-04-01 → 2024-09-30 | ¥443.8bn |
| Power Generationreportable segment | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥7.3bn |
| Power Generationreportable segment | segment ordinary income | 2024-04-01 → 2024-09-30 | ¥39.3bn |
| Transmissionand Transformationreportable segment | revenue | 2024-04-01 → 2024-09-30 | ¥25.0bn |
| Transmissionand Transformationreportable segment | revenue external | 2024-04-01 → 2024-09-30 | ¥24.7bn |
| Transmissionand Transformationreportable segment | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥314m |
| Transmissionand Transformationreportable segment | segment ordinary income | 2024-04-01 → 2024-09-30 | ¥5.0bn |
| Total Of Reportable Segments And Otherssegment total | revenue | 2024-04-01 → 2024-09-30 | ¥663.3bn |
| Total Of Reportable Segments And Otherssegment total | revenue external | 2024-04-01 → 2024-09-30 | ¥640.7bn |
| Total Of Reportable Segments And Otherssegment total | revenue intersegment | 2024-04-01 → 2024-09-30 | ¥22.6bn |
| Total Of Reportable Segments And Otherssegment total | segment ordinary income | 2024-04-01 → 2024-09-30 | ¥71.0bn |
Segment names come from EDINET member IDs; not yet mapped to a common taxonomy.
All source rows · 573
| Item | Context | Value | Unit |
|---|---|---|---|
| Operating revenue1 | InterimDuration_ReconcilingItemsMember | -19694000000 | JPY |
| Operating revenue1 | InterimDuration | 571414000000 | JPY |
| Ordinary income | InterimDuration_jpcrp040300-ssr_E04510-000PowerGenerationReportableSegmentMember | 24930000000 | JPY |
| Ordinary income | InterimDuration_jpcrp040300-ssr_E04510-000TransmissionandTransformationReportableSegmentMember | 4916000000 | JPY |
| Ordinary income | InterimDuration_jpcrp040300-ssr_E04510-000ElectricPowerSurroundingsRelatedReportableSegmentsMember | 5359000000 | JPY |
| Ordinary income | InterimDuration_jpcrp040300-ssr_E04510-000OverseasReportableSegmentsMember | 60368000000 | JPY |
| Ordinary income | InterimDuration_OtherReportableSegmentsMember | 165000000 | JPY |
| Ordinary income | InterimDuration_TotalOfReportableSegmentsAndOthersMember | 95739000000 | JPY |
| Ordinary income | InterimDuration_ReconcilingItemsMember | 626000000 | JPY |
| Ordinary income | InterimDuration | 96365000000 | JPY |
| Document title cover page | FilingDateInstant | Original text (Japanese)半期報告書 | |
| Clause of stipulation cover page | FilingDateInstant | Original text (Japanese)金融商品取引法第24条の５第１項の表の第１号 | |
| Place of filing cover page | FilingDateInstant | Original text (Japanese)関東財務局長 | |
| Filing date cover page | FilingDateInstant | 2025-11-04 | |
| Semi annual accounting period cover page | FilingDateInstant | Original text (Japanese)第74期中(自 2025年４月１日 至 2025年９月30日) | |
| Company name cover page | FilingDateInstant | Original text (Japanese)電源開発株式会社 | |
| Company name in english cover page | FilingDateInstant | Electric Power Development Co., Ltd. | |
| Title and name of representative cover page | FilingDateInstant | Original text (Japanese)代表取締役社長 社長執行役員 菅 野 等 | |
| Address of registered headquarter cover page | FilingDateInstant | Original text (Japanese)東京都中央区銀座六丁目15番１号 | |
| Telephone number address of registered headquarter cover page | FilingDateInstant | Original text (Japanese)03(3546)2211番(代表) | |
| Name of contact person address of registered headquarter cover page | FilingDateInstant | Original text (Japanese)財務部部長北 風 正 男 | |
| Nearest place of contact cover page | FilingDateInstant | Original text (Japanese)東京都中央区銀座六丁目15番１号 | |
| Telephone number nearest place of contact cover page | FilingDateInstant | Original text (Japanese)03(3546)2211番(代表) | |
| Name of contact person nearest place of contact cover page | FilingDateInstant | Original text (Japanese)財務部部長北 風 正 男 | |
| Place for public inspection cover page (text) | FilingDateInstant | Text · Plus | |
| Edinet code | FilingDateInstant | E04510 | |
| Fund code | FilingDateInstant | － | |
| Security code | FilingDateInstant | 95130 | |
| Filer name in japanese | FilingDateInstant | Original text (Japanese)電源開発株式会社 | |
| Filer name in english | FilingDateInstant | Electric Power Development Co., Ltd. | |
| Fund name in japanese | FilingDateInstant | － | |
| Fund name in english | FilingDateInstant | － | |
| Cabinet office ordinance | FilingDateInstant | Original text (Japanese)企業内容等の開示に関する内閣府令 | |
| Document type | FilingDateInstant | Original text (Japanese)第四号の三様式 | |
| Accounting standards | FilingDateInstant | Japan GAAP | |
| Whether consolidated financial statements are prepared | FilingDateInstant | true | |
| Industry code when consolidated financial statements are prepared in accordance with industry specific regulations | FilingDateInstant | cte | |
| Industry code when financial statements are prepared in accordance with industry specific regulations | FilingDateInstant | － | |
| Current fiscal year start date | FilingDateInstant | 2025-04-01 | |
| Current period end date | FilingDateInstant | 2025-09-30 | |
| Type of current period | FilingDateInstant | HY | |
| Current fiscal year end date | FilingDateInstant | 2026-03-31 | |
| Previous fiscal year start date | FilingDateInstant | 2024-04-01 | |
| Comparative period end date | FilingDateInstant | 2024-09-30 | |
| Previous fiscal year end date | FilingDateInstant | 2025-03-31 | |
| Next fiscal year start date | FilingDateInstant | － | |
| End date of quarterly or semi annual period of next fiscal year | FilingDateInstant | － | |
| Amendment flag | FilingDateInstant | false | |
| Identification of document subject to amendment | FilingDateInstant | － | |
| Report amendment flag | FilingDateInstant | false |
Every row of the EDINET CSV. Item names are the XBRL element names; filed text is kept in its original Japanese. Filed text is available on Plus and Pro.
Data checks · 14 of 14 passed
| balance sheet identity | pass |
| balance sheet identity | pass |
| dei present | pass |
| period resolution | pass |
| statement vs summary · net assets | pass |
| statement vs summary · net assets | pass |
| statement vs summary · net income attributable to parent | pass |
| statement vs summary · net income attributable to parent | pass |
| statement vs summary · operating cash flow | pass |
| statement vs summary · operating cash flow | pass |
| statement vs summary · revenue | pass |
| statement vs summary · revenue | pass |
| statement vs summary · total assets | pass |
| statement vs summary · total assets | pass |