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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
John W Keys III hydroelectric plant
71st-largest grid storage in United States of 101 · top 76% worldwide (#728 of 965)
- Operator
- US Bureau of Reclamation
- Owner
- US Bureau of Reclamation
- Status
- operating
- Capacity
- 314 MW
- Technology
- pumped storage
- Commissioned
- 1973
- Also listed as
- A power plant — this site generates as well as stores
Comparable grid storages · United States · 101 ranked
- #1Red Lake Pumped hydroelectric plant3.0 GW
- #69Richard B. Russell Pumped Storage hydroelectric plant328 MW
- #70Elephant Rock Pumped hydroelectric plant318 MW
- #71John W Keys III hydroelectric plant314 MW
- #72Barn Canyon Pumped Storage hydroelectric plant300 MW
- #73Cabin Creek hydroelectric plant300 MW
Grid connection · within 50 km
- Nearest substation
- 500kV Spreader Yard
- Its voltage
- 500 kV
- Distance
- 1.1 km
- Strongest line nearby
- 500 kV
- 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
- Nathaniel Washington hydroelectric plant0 m · Power Plant · 4.2 GW · hydro
- Grand Coulee Left hydroelectric plant0 m · Power Plant · 1.2 GW · hydro
- Grand Coulee Right hydroelectric plant0 m · Power Plant · 1.1 GW · hydro
- Circuit 23662 m · Transmission Line
- Circuit 24662 m · Transmission Line
- Circuit 21695 m · Transmission Line
- 500kV Spreader Yard1.1 km · Substation / Converter
- Grand Coulee 500kV Switchyard3.1 km · Substation / Converter
- Banks Lake Pumped Storage hydroelectric plant3.5 km · Grid Storage · 500 MW
On the interactive map
Watercourse: Columbia River
SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)