Grid Storage

Yangyang hydroelectric plant

South Korea

Largest grid storage in South Korea of 18 · top 50% worldwide (#477 of 965)

Owner
Korea Hydro & Nuclear Power (KHNP) Co Ltd
Status
operating
Capacity
1,000 MW
Technology
pumped storage
Commissioned
2006
Also listed as
A power plant — this site generates as well as stores

Comparable grid storages · South Korea · 18 ranked

All grid storages in South Korea

Grid connection · within 50 km

Nearest substation
신양양변전소
Its voltage
345 kV
Distance
1.4 km

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

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SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)