Ennis Power Company — 418 MW gas plant, Ellis County, TX

Ennis Power Company — 418 MW gas plant, Ellis County, TX · Ask the Grid

Generation and physical site

EIA plant 55223 · Inventory for Sep 2026.

Reported operating nameplate by technology

Natural gas: 418 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 (2)

EIA generator status and nameplate capacity for Ennis Power Company LLC
Generator	Technology	Status	Power (MW)	Energy (MWh)
GT1	Natural Gas Fired Combined Cycle	Operating	285	Unknown
ST1	Natural Gas Fired Combined Cycle	Operating	133	Unknown

Physical map location · OpenStreetMap: 32.31975, -96.67537
Filed location · EIA: 32.32000, -96.67500

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: Mar 14, 2026
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
GT1	285 MW 245.1 MW summer	Natural Gas Fired Combined Cycle CT	May 2002	Operating
ST1	133 MW 114.4 MW summer	Natural Gas Fired Combined Cycle CA	May 2002	Operating

Performance

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

Peer context

Technology capacity: 418 MW; Natural Gas Fired Combined Cycle
National rank: #327; of 540 operating peers
TX rank: #54; of 68 operating peers

Monthly generation

Download CSV

Latest 12 months

1.66 TWh

Reported net generation

Latest report

Dec 2024

EIA-923 monthly filing

2024 capacity factor

45.1%

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 Aug 27, 2026

Avg output

263 MW

Peak output

327 MW

Capacity factor

81%

Uptime

92%

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

Output by hourlocal time · 90 days through Aug 27, 2026

0:006:0012:0018:0024:00

Latest disclosed outputhourly · 2 weeks ending Aug 27, 2026

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

Settlement price economics

Observed ERCOT settlement prices at ETCCS_CC1 over 365 days (2025-10-26 to 2026-10-25). This plant is also crosswalked to ENAS_ENA1, ETCCS_CCU; the point with the deepest price history is shown.

Average price: $31.29/MWh
Hourly range: -$1,070 to $1,285
Negative price hours: 273
TB2 spread benchmark: $54.4/kW-yr

The TB2 figure is a price benchmark, not revenue: it values one perfect-foresight cycle per day between the 2 cheapest and 2 dearest hours of each day, gross of round-trip losses, and excludes ancillary services and any physical dispatch constraint. It describes what this node’s price shape was worth over the window — it is not this asset’s realized capture, and no dispatch is assumed or modelled.

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

May 2002
May 2002
Generating units entered serviceEIA May 202...
EIA reports May 2002 for both current generator records.
Aug 27, 2026
Aug 27, 2026
Latest disclosed generation interval
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.

Sources

PublisherReferenceType

U.S. Energy Information AdministrationEIA-860 generator inventoryFederal registry

U.S. Energy Information AdministrationEIA-923 generation filingsFederal filing

ERCOTERCOT 60-Day SCED disclosureMarket disclosure

Common questions about Ennis Power Company

Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.

How big is Ennis Power Company?

Ennis Power Company reports 418 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 Ennis Power Company?

Ennis Power Company is a Natural Gas Fired Combined Cycle facility in Ellis County, TX, participating in the ERCOT market.

Where is Ennis Power Company located?

Ennis Power Company is in Ellis County, TX, inside the ERCOT balancing area.

Who operates Ennis Power Company?

Ennis Power Company is operated by Ennis Power Company LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Ennis Power Company generate?

Ennis Power Company reported 1,656.3 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.

How does Ennis Power Company compare to other plants?

By capacity, Ennis Power Company ranks #327 of 540 operating plants of the same technology nationally. It ranks #54 of 68 in TX.

Co-located assets

Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.

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Overview

Overview

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Infrastructure record

Profile

Structured profile

Generation and physical site

Reported operating nameplate by technology

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Units and generators

Performance

Peer context

Monthly generation

ERCOT disclosed dispatch

Generation

Output by hourlocal time · 90 days through Aug 27, 2026

Latest disclosed outputhourly · 2 weeks ending Aug 27, 2026

Settlement price economics

Grid and market context

Market registration

Operating context

Nearby substations

Commercial, land, and environmental record

Land and environmental record

Related parties and identifiers

Relationship graph

Parties and identifiers

Reporting portfolio