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Asset classes
- Transmission Line80,968
- Power Plant32,429
- Substation / Converter7,614
- Oil & Gas Field7,055
- Coal / Uranium Mine5,382
- Pipeline4,951
- Cement Plant3,513
- Data Centre3,283
- Iron & Steel Plant1,293
- LNG Terminal1,198
- Grid Storage965
- Iron Ore Mine949
- Chemical Plant868
- Interconnector704
- Export Terminal519
- Refinery279
- Storage / Tank Farm38
- Oil / Commodity Contract19
- Hydrogen Project18
- Carbon Capture (CCS)16
Chokepoints
Grid Storage
Hongawa hydroelectric plant
17th-largest grid storage in Japan of 35 · top 60% worldwide (#573 of 965)
- Owner
- Shikoku Electric Power Group (Yonden Group)
- Status
- operating
- Capacity
- 615 MW
- Technology
- pumped storage
- Commissioned
- 1982
- Also listed as
- A power plant — this site generates as well as stores
Comparable grid storages · Japan · 35 ranked
- #1Kannagawa hydroelectric plant2.8 GW
- #15Numappara hydroelectric plant675 MW
- #16Nabara hydroelectric plant620 MW
- #17Hongawa hydroelectric plant615 MW
- #18Kyogoku hydroelectric plant600 MW
- #19Okukiyotsu Daini hydroelectric plant600 MW
Grid connection · within 50 km
- Nearest substation
- 東予変電所
- Its voltage
- 500 kV
- Distance
- 20 km
- Strongest line nearby
- 500 kV
- Line operator
- 四国電力
- Substations in range
- 2
Mapped grid infrastructure from OpenStreetMap, whose coverage is excellent in some regions and sparse in others. Nothing shown here means nothing is mappednearby — not that the site is unconnected. Lines are matched on a segment’s midpoint, so a corridor passing directly overhead can be missed; this under-reports rather than invents.
Co-located infrastructure · within 25 km
- Hongawa hydroelectric plant0 m · Power Plant · 615 MW · hydro
- 500 kV line20 km · Transmission Line
- 東予変電所20 km · Substation / Converter
- 四国中央中幹線21 km · Transmission Line
- Niihama Nishi power station23 km · Power Plant · 300 MW · coal
- Niihama LNG Terminal24 km · LNG Terminal · 1 Mtpa
- Niihama Kita thermal power station24 km · Power Plant · 150 MW · gas
On the interactive map
Watercourse: Seto River, Yoshino River
SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)