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- Transmission Line80,968
- Power Plant32,429
- Substation / Converter7,614
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Chokepoints
Grid Storage
Tenzan hydroelectric plant
20th-largest grid storage in Japan of 35 · top 62% worldwide (#590 of 965)
- Owner
- Kyushu Electric Power Co Inc
- Status
- operating
- Capacity
- 600 MW
- Technology
- pumped storage
- Commissioned
- 1986
- Also listed as
- A power plant — this site generates as well as stores
Comparable grid storages · Japan · 35 ranked
- #1Kannagawa hydroelectric plant2.8 GW
- #18Kyogoku hydroelectric plant600 MW
- #19Okukiyotsu Daini hydroelectric plant600 MW
- #20Tenzan hydroelectric plant600 MW
- #21Numazawa Daini hydroelectric plant460 MW
- #22Azumi Pumped Storage hydroelectric plant412 MW
Grid connection · within 50 km
- Nearest substation
- 九州電力西九州変電所
- Its voltage
- 500 kV
- Distance
- 17 km
- Strongest line nearby
- 500 kV
- Substations in range
- 3
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
- Tenzan hydroelectric plant0 m · Power Plant · 600 MW · hydro
- 玄海幹線2号線北線9.0 km · Transmission Line
- 玄海幹線2号線南線17 km · Transmission Line
- 500 kV line17 km · Transmission Line
- 九州電力西九州変電所17 km · Substation / Converter
On the interactive map
SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)