Pearsall reports 201.6 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.

What kind of plant is Pearsall?

Pearsall is a Natural Gas Internal Combustion Engine facility in Frio County, TX, participating in the ERCOT market.

Where is Pearsall located?

Pearsall is in Frio County, TX, inside the ERCOT balancing area.

Who operates Pearsall?

Pearsall is operated by South Texas Electric Coop, Inc according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Pearsall generate?

Pearsall reported 329.9 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.

Where does Pearsall connect to the grid?

Pearsall settles at PEARSA_1_24.

How does Pearsall compare to other plants?

By capacity, Pearsall ranks #7 of 410 operating plants of the same technology nationally. It ranks #4 of 149 in TX.

Pearsall — 202 MW gas plant, Frio County, TX

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Pearsall — 202 MW gas plant, Frio County, TX · Ask the Grid

Generation and physical site

EIA plant 3630 · Inventory for Sep 2026.

Reported operating nameplate by technology

Natural gas: 201.6 MW

Operating generators only. Battery power is in MW; stored energy is in MWh. These ratings do not establish a shared export limit.

Generator records (27)

EIA generator status and nameplate capacity for Pearsall
Generator	Technology	Status	Power (MW)	Energy (MWh)
10A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
11A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
12A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
13A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
14A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
15A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
16A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
17A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
18A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
19A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
1A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
20A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
21A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
22A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
23A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
24A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
2A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
3A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
4A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
5A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
6A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
7A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
8A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
9A	Natural Gas Internal Combustion Engine	Operating	8.4	Unknown
1	Natural Gas Steam Turbine	Retired	22	Unknown
2	Natural Gas Steam Turbine	Retired	22	Unknown
3	Natural Gas Steam Turbine	Retired	22	Unknown

Physical map location · OpenStreetMap: 28.92440, -99.09059
Filed location · EIA: 28.92750, -99.09190

Sources and observation dates

Inventory source: EIA-860M workbook (preliminary)
EIA reporting month: Sep 2026
EIA retrieved: Oct 24, 2026
OSM extract: Oct 9, 2026
OSM last mapped edit: Jan 13, 2025
Map prepared: Oct 24, 2026
Field verification: Not reported

Reporting month describes the inventory. Retrieval and map preparation describe processing; an OSM edit does not establish an in-service date.

EIA source inventory

Units and generators

Current generator records and technology attributes reported through EIA-860.

Generator	Capacity	Technology	Operation	Status
10A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
11A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
12A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
13A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
14A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
15A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
16A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
17A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Apr 2010	Operating
18A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
19A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Apr 2010	Operating
1A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
20A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Apr 2010	Operating
21A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Apr 2010	Operating
22A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Apr 2010	Operating
23A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Apr 2010	Operating
24A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Apr 2010	Operating
2A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
3A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
4A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
5A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
6A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
7A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
8A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating
9A	8.4 MW 8.4 MW summer	Natural Gas Internal Combustion Engine IC	Mar 2010	Operating

Related parties and identifiers

Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.

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AssetOwner / operatorEquipment

Parties and identifiers

OrganizationRoleBasis

South Texas Electric CooperativeOwner and EIA registered operatorEIA May 2026 generator inventory

WärtsiläEngine and engineering-equipment supplierWärtsilä Pearsall project record

Reporting portfolio

EIA reporting entity

South Texas Electric Coop, Inc

Entity 17583

Operating portfolio

3 plants

1 states

Reported capacity

618.8 MW

Natural Gas Fired Combined Cycle · Natural Gas Internal Combustion Engine · Petroleum Liquids

Largest reported plants in this portfolio
Largest reported plants	Capacity	State
Red Gate Power Plant	224.4 MW	TX
PearsallCurrent	201.6 MW	TX
Sam Rayburn	192.8 MW	TX

Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.

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Generation and physical site

Reported operating nameplate by technology

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Units and generators

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