natural gas power plantERCOT · Hidalgo Countyplant:plant-55545

Hidalgo Energy Center

Calpine and Brownsville PUB · Hidalgo County · ERCOT

Hidalgo Energy Center is a three-generator natural-gas combined-cycle facility in Edinburg, Texas. EIA's May 2026 inventory reports 551.3 MW nameplate, 495 MW net summer, and 543 MW net winter capability across two combustion turbines and one steam turbine, all dated June 2000.

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Overview

Key fields

Net summer capacity: 495 MW
EIA May 2026
Nameplate capacity: 551.3 MW
EIA May 2026
Net winter capacity: 543 MW
EIA May 2026
Calpine interest: 78.5%
Calpine 2025 filing
BPUB interest: 21% / 105 MW
Brownsville PUB
Registry anchor: Plant 55545
Calpine Corp - Hidalgo
Resource stack: 2 resources
DUKE_CC1_1 · DUKE_CC1_2

Profile

Grid role: Jointly owned dispatchable combined-cycle generation in ERCOT.
Operating configuration: Two 176.6 MW combustion turbines and one 198.1 MW steam turbine.
Capacity scope: EIA reports 551.3 MW nameplate, 495 MW net summer, and 543 MW net winter capability.
Ownership: Calpine reports a 78.5% interest; Brownsville PUB reports a rounded 21% interest and 105 MW share.

Structured profile

Net summer capacity: 495 MW
EIA May 2026
Nameplate capacity: 551.3 MW
EIA May 2026
Net winter capacity: 543 MW
EIA May 2026
Calpine interest: 78.5%
Calpine
BPUB interest: 21% / 105 MW
Brownsville PUB

Units and generators

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

Generator	Capacity	Technology	Operation	Status
CTG1	176.6 MW 159 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Jun 2000	Operating
CTG2	176.6 MW 159 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Jun 2000	Operating
STG1	198.1 MW 177 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CA	Jun 2000	Operating

Performance

Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.

Peer context

Technology capacity: 551.3 MW
National rank: #286
TX rank: #43

Monthly generation

Download CSV

Latest 12 months

2.74 TWh

Reported net generation

Latest report

Apr 2026

EIA-923 monthly filing

2025 capacity factor

62.8%

Using current reported nameplate capacity

Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.

ERCOT disclosed dispatch

2 ERCOT market resources · Combined-cycle gas

Generation

3 mo through May 22, 2026

Avg output

459 MW

Peak output

532 MW

Capacity factor

86%

Uptime

66%

Capacity factor is average output vs. this plant's observed peak.

Output by hourlocal time · 90 days through May 22, 2026

0:006:0012:0018:0024:00

Latest disclosed outputhourly · 2 weeks ending May 22, 2026

Hidalgo Energy Center output489MW

Generation from ERCOT's 60-Day SCED Disclosure (≈60-day lag), summed over this site's market resources.

Grid and market context

Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.

Market registration

ERCOT public disclosures

Settlement point

DUKE_CC1

high confidence spatial and capacity match

Market resources

2 resources

DUKE_CC1_1·DUKE_CC1_2

Registered capability

Not disclosed

CCGT90

Operating context

ERCOT market records

365-day nodal price

$28.29 average

$24.62 median · $62.39 95th percentile · 4.2% negative intervals

Nearby substations

HIFLD infrastructure inventory

UNKNOWN301134

NOT AVAILABLE · 138 kV

0.2 km

NORTH EDINBURG

IN SERVICE · 345 kV

1.4 km

UNKNOWN306136

IN SERVICE · 138 kV

2.5 km

MCCOLL ROAD

NOT AVAILABLE · 138 kV

4.0 km

UNKNOWN303897

IN SERVICE · 138 kV

6.4 km

Commercial, land, and environmental record

Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.

Land and environmental record

Air Permit

Permit No. 147942

TCEQ AIR NEW SOURCE PERMITS; REGISTRATION; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 147942

Air Permit

Permit No. 167541

TCEQ AIR NEW SOURCE PERMITS; REGISTRATION; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 167541

Air Permit

Permit No. 167542

TCEQ AIR NEW SOURCE PERMITS; REGISTRATION; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 167542

Air Permit

Permit No. 1837

TCEQ AIR OPERATING PERMITS; PERMIT; status ACTIVE

TCEQ AIR OPERATING PERMITS: 1837

Air Permit

Permit No. 38599

TCEQ AIR NEW SOURCE PERMITS; PERMIT; status ACTIVE

TCEQ AIR NEW SOURCE PERMITS: 38599

Parcel at the EIA coordinate

TxGIO parcel geometry, not the full facility boundary.TxGIO source ID 610062Source

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.

Parties and identifiers

Relationship	Entity	Basis
Market resources	DUKE_CC1_1, DUKE_CC1_2	Linked ERCOT resources.
Grid selection	plant:plant-55545	Canonical asset page /ercot/assets/plant/hidalgo-energy-center.

Reporting portfolio

EIA reporting entity

Calpine Corp - Hidalgo

Entity 2934

Operating portfolio

1 plants

1 states

Reported capacity

551.3 MW

Natural Gas Fired Combined Cycle

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

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Jun 2000
Jun 2000
Combined-cycle facility entered serviceEIA May 202...
EIA reports June 2000 for both combustion turbines and the steam turbine.
May 22, 2026
May 22, 2026
Latest disclosed generation interval
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.