J K Spruce — Plant Summary
- EIA Plant ID
- 7097
- Capacity
- 1488.5 MW
- Primary Fuel
- Coal
- Technology
- Conventional Steam Coal
- Status
- Operating
- Location
- Bexar, TX
- Operating Since
- 1992
- Generators
- 2
- Operator
- City of San Antonio - (TX)
- Parent Company
- —
- Annual Generation
- 6,462,273 MWh
- Capacity Factor
- 49.5%
- Balancing Authority
- Electric Reliability Council of Texas, Inc.
- ISO/RTO
- ERCOT
- NERC Region
- TRE
J K Spruce
OperatingSub. Coal
Ranked #5 of 9 Sub. Coal plants in TX#26 of 103 nationally
1488.5 MW Sub. Coal operating in Bexar, TX — Electric Reliability Council of Texas, Inc.
EIAWD
1,488.5 MW
Nameplate Capacity
2
Generators
units
Conventional Steam Coal
Technology
1992
Operating Since
Location
Coordinates
29.3097, -98.3203
County
Bexar, TX
Nearby Plants
- O W SommersNatural Gas892 MW · 0.4 km
- Padua 2BESS150 MW · 1.8 km
- Padua 3BESS200 MW · 1.8 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of San Antonio - (TX) | — | — |
| Owner(s) | City of San Antonio - (TX) | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
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
Engineering & Generators
Grid Context
NERC Region
TRE
Balancing Authority
Electric Reliability Council of Texas, Inc.
Grid Voltage
345 kV
Regulatory Status
RE
Entity Type
Municipal
Sector
Electric Utility
Generation
418.2K MWh
Latest Month
6.5M MWh
Annual Generation
49.5%
Capacity Factor
Jan 2023 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint 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
Secondary Zone
LZ_SOUTH
Location Type
Resource Node
Node Source
EIA-860 direct report
News & Articles (10)Beta
General
After Winter Storm Uri, energy storage tech is making Texas more resilient
Energy storage is an insurance policy for a fast-growing state that demands affordable power and expects the lights to stay on in extreme...
San Antonio Express-News·3 weeks ago
Hazards·extreme cold
After Winter Storm Uri, energy storage tech is making Texas more resilient
Energy storage is an insurance policy for a fast-growing state that demands affordable power and expects the lights to stay on in extreme...
Texas (other)
San Antonio Express-News·3 weeks ago
Hazards·extreme cold
2021 winter storm exposed grid weakness; part of Texas’ solution is being built near S.A.
Smokestacks from CPS Energy's J.K. Spruce Power Station rise in the distance behind Eolian's Padua 2 battery storage facility currently...
CPS Energy (operator)Eolian (developer)
San Antonio Express-News·2 months ago
General
2021 winter storm exposed grid weakness; part of Texas’ solution is being built near S.A.
Smokestacks from CPS Energy's J.K. Spruce Power Station rise in the distance behind Eolian's Padua 2 battery storage facility currently...
San Antonio Express-News·2 months ago
Last updated 2026-03-14
View all 10 articles