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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 | — |
| Status | Operating | operating | — |
GEM identifies the owner as US Bureau of Reclamation
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
Grid Region
Mountain West
Market
Bilateral Market
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
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.
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $216.8M
This plant is in a bilateral market territory without organized wholesale pricing. Nodal pricing data is not available.
Last updated 2026-03-26
View all 8 articlesNo ask pi reports yet for this entity.
ask pi about FlatironWestern Area Power Administration - Rocky Mountain Region (WACM)
Grid Voltage
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Federal
Sector
Electric Utility