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450 MW Natural Gas planned in Harrison, TX — Southwest Power Pool
450 MW
Nameplate Capacity
2
Generators
units
Natural Gas Fired Combustion Turbine
Technology
Planned: —
Planned Operation
Coordinates
32.4607, -94.4852
County
Harrison, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Southwestern Electric Power Co | Southwestern Electric Power | — |
| Owner(s) | Southwestern Electric Power Co | American Electric Power Company | — |
| Status | Planned | — | — |
The Hallsville power plant is a 450 MW natural gas-fired facility located in Harrison County, Texas. It is owned by American Electric Power Company and operated by Southwestern Electric Power Co. The plant consists of two natural gas-fired combustion turbine generators. Hallsville is ranked as the 89th largest power plant in Texas out of 144, and 517th nationally out of 945.
The plant's balancing authority is the Southwest Power Pool (SPP), and it is located within the Midwest Reliability Organization (MRO) NERC region. Hallsville is tracked by energy industry news, with 10 articles mentioning the plant, including 8 focused on industry trends and 2 on regulatory matters.
Generated from EIA, GEM, and public data sources
ISO/RTO
SPP
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
No generation data available for this plant.
2023
$782/kW
Est. Construction Cost
Total estimated cost: $351.9M
Point of Interconnection
Nearest Substation
Pirkey Substation · 345 kV
Substation Distance
< 10 km
Operator
Southwestern Electric Power Company
Coord Source
OSM spatial
Market Position
ISO/RTO Market
SPP
LMP Node
—
Pricing Hub
SPP South Hub
Node Source
OSM spatial match
Substation identified. Node ID not yet resolved against ISO roster.
Last updated 2026-03-26
View all 5 articlesSouthwest Power Pool (SWPP)
Grid Voltage
138.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility