94.5 MW Conventional Hydroelectric (86 MW) + Hydroelectric Pumped Storage (9 MW) operating in Larimer, CO — Western Area Power Administration - Rocky Mountain Region
94.5 MW
Nameplate Capacity
3
Generators
units
Hybrid (2)
Technology
Conventional Hydroelectric + Hydroelectric Pumped Storage
1954
Operating Since
Coordinates
40.3650, -105.2360
County
Larimer, CO
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | U S Bureau of Reclamation | US Bureau of Reclamation | — |
| Owner(s) | U S Bureau of Reclamation | US Bureau of Reclamation [100%] | — |
| Status | Operating | operating | — |
GEM identifies the owner as US Bureau of Reclamation [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
The Flatiron plant, located in Larimer County, Colorado, is a 94.5 MW hybrid hydroelectric facility utilizing both conventional and pumped storage technologies. It began operating in 1954 and is operated by the U.S. Bureau of Reclamation. The plant uses water (WAT) as its primary fuel source and consists of three generators. Flatiron ranks as the fourth-largest hydroelectric plant in Colorado (out of 49) and 201st nationally (out of 1464).
In the most recent year with available data, Flatiron generated 214,845 MWh of electricity, achieving a capacity factor of 26.0%. The plant operates within the Western Area Power Administration - Rocky Mountain Region balancing authority and is part of the Western Electricity Coordinating Council (WECC) NERC region.
Generated from EIA, GEM, and public data sources
NERC Region
WECC
Balancing Authority
Western Area Power Administration - Rocky Mountain Region
Grid Voltage
115 kV
Regulatory Status
RE
Entity Type
Federal
Sector
Electric Utility
23.1K MWh
Net Discharge
214.8K MWh
Annual Net Energy
26.0%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
No financial data available for this plant.
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
Last updated 2026-03-26
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