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104.3 MW Hydro operating in Grayson, TX — Electric Reliability Council of Texas, Inc.
104.3 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1945
Operating Since
Coordinates
33.8181, -96.5692
County
Grayson, TX
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 | USCE-Tulsa District | US Army Corps of Engineers - Tulsa District | — |
| Owner(s) | USCE-Tulsa District | US Army Corps of Engineers - Tulsa District | — |
| Status | Operating | operating | — |
GEM identifies the owner as US Army Corps of Engineers - Tulsa District
This entity is not yet in the GEM ownership database — chain unavailable.
The Denison hydroelectric plant is located in Grayson County, Texas. The plant has a total capacity of 104.3 MW across two conventional hydroelectric generators. It began operating in 1945 and is currently operated by USCE-Tulsa District. The primary fuel source for the plant is water (WAT).
Denison operates within the Electric Reliability Council of Texas (ERCOT) balancing authority and the TRE NERC region. In the most recent year with available data, the plant generated 191,900 MWh, achieving a capacity factor of 21.0%. Denison is ranked as the second-largest hydroelectric plant in Texas, and 179th nationally out of 194 hydroelectric plants.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
12.5K MWh
Latest Month
191.9K MWh
Annual Generation
21.0%
Capacity Factor
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $239.3M
Point of Interconnection
Nearest Substation
Denison Dam Substation · 138 kV
Substation Distance
0 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
DENISON_G1_2
Pricing Hub
HB_NORTH
Alt. Hub / Zone
LZ_NORTH
Location Type
Resource Node
Node Source
Curated node match
Last updated 2026-03-26
View all articlesNo ask pi reports yet for this entity.
ask pi about DenisonElectric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
138.0 kV
Regulatory Status
RE — Regulated
Entity Type
Federal
Sector
Electric Utility