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1488.5 MW Sub. Coal operating in Bexar, TX — Electric Reliability Council of Texas, Inc.
1,488.5 MW
Nameplate Capacity
2
Generators
units
Conventional Steam Coal
Technology
1992
Operating Since
Coordinates
29.3097, -98.3203
County
Bexar, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of San Antonio - (TX) | — | — |
| Owner(s) | City of San Antonio - (TX) | — | — |
| Status | Operating | — | — |
The J K Spruce power plant, located in Bexar County, Texas, has a total capacity of 1488.5 MW across two generators utilizing conventional steam coal technology. The plant's primary fuel source is subbituminous coal. It began operating in 1992 and is owned and operated by the City of San Antonio.
In the most recent year of data, the plant generated 6,462,273 MWh, achieving a capacity factor of 49.5%. J K Spruce operates within the Electric Reliability Council of Texas (ERCOT) balancing authority and the TRE NERC region. Among coal plants in Texas, it ranks as the 4th largest out of 8, and nationally it is the 22nd largest out of 75.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
418.2K MWh
Latest Month
6.5M MWh
Annual Generation
49.5%
Capacity Factor
CO₂ Intensity
2420 lb/MWh
NOx
0.952 lb/MWh
SO₂
No financial data available for this plant.
This is a small open-data project — if you have sources or want more coverage here, drop a note.
Point of Interconnection
Nearest Substation
J. K. Spruce Switchyard · 345 kV
Substation Distance
< 10 km
Operator
CPS Energy
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
CALAVER_JKS2
Pricing Hub
HB_SOUTH
Alt. Hub / Zone
LZ_SOUTH
Location Type
Resource Node
Node Source
EIA-860 direct report
Last updated 2026-04-09
View all 8 articlesElectric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
345.0 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
Sector
Electric Utility
0.243 lb/MWh
CH₄
0.245 lb/MWh
N₂O
0.036 lb/MWh
Capacity Factor
38.9%
Annual Net Gen
5078 GWh
CO₂eq
2436 lb/MWh
Subregion
ERCOT All