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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
Flatiron hydroelectric plant
95th-largest grid storage in United States of 101 · top 94% worldwide (#906 of 965)
- Operator
- US Bureau of Reclamation
- Owner
- US Bureau of Reclamation
- Status
- operating
- Capacity
- 95 MW
- Technology
- pumped storage (site also has conventional hydro)
- Commissioned
- 1954
- 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
- #93Horse Mesa hydroelectric plant131 MW
- #94Thermalito hydroelectric plant115 MW
- #95Flatiron hydroelectric plant95 MW
- #96Degray hydroelectric plant70 MW
- #97Mormon Flat hydroelectric plant64 MW
Grid connection · within 50 km
- Nearest substation
- Ault substation
- Its voltage
- 345 kV
- Distance
- 45 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
- Longmont Lyons Cement Plant18 km · Cement Plant
On the interactive map
Watercourse: Colorado River
SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)