Shamrock Wind — 324 MW hybrid plant, Crockett County, TX

Shamrock Wind — 324 MW hybrid plant, Crockett County, TX · Ask the Grid

Generation and physical site

EIA plant 66540 · Inventory for Sep 2026.

Reported operating nameplate by technology

Battery storage: 100 MW
Wind: 223.9 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 Shamrock Wind
Generator	Technology	Status	Power (MW)	Energy (MWh)
SES	Batteries	Operating	100	100
WSHAM	Onshore Wind Turbine	Operating	223.9	Unknown

Physical map location · OpenStreetMap: 30.96139, -101.52811
Filed location · EIA: 30.93600, -101.60700

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: Dec 21, 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
SES	100 MW 100 MW summer	Batteries BA	Jan 2025	Operating
WSHAM	223.9 MW 223.9 MW summer	Onshore Wind Turbine WT	Dec 2023	Operating

Performance

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

Peer context

Technology capacity: 223.9 MW; Onshore Wind Turbine
National rank: #197; of 1,374 operating peers
TX rank: #69; of 230 operating peers

Monthly generation

Download CSV

Latest 12 months

841.7 GWh

Reported net generation

Latest report

Jul 2026

EIA-923 monthly filing

2025 capacity factor

30.5%

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

3 ERCOT market resources · Battery / storage, Wind

Dispatch

3 mo through Aug 27, 2026

Avg discharge

121 MW

Peak output

321 MW

Capacity factor

38%

Cycles / day

9.71

Discharging

61%

Charging

13%

Curtailed

45.8%

Cycles/day is discharged energy vs. usable capacity (~300 MWh). Capacity factor is avg discharge vs. 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 SHAMROCK_RN over 365 days (2025-10-26 to 2026-10-25).

Average price: $31.35/MWh
Hourly range: -$40 to $1,134
Negative price hours: 1,159
TB2 spread benchmark: $59.6/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

Dec 2023
Dec 2023
Wind generator entered serviceEIA May 202...
EIA reports December 2023 for WSHAM.
Jan 2025
Jan 2025
Battery Entered ServiceEIA May 202...
EIA reports January 2025 for the 100 MW SES battery.
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 Shamrock Wind

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

How big is Shamrock Wind?

Shamrock Wind reports 100 MW battery storage + 223.9 MW wind of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.

What kind of plant is Shamrock Wind?

Shamrock Wind is a Onshore Wind Turbine facility in Crockett County, TX, participating in the ERCOT market.

Where is Shamrock Wind located?

Shamrock Wind is in Crockett County, TX, inside the ERCOT balancing area.

Who operates Shamrock Wind?

Shamrock Wind is operated by Shamrock Wind LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Shamrock Wind generate?

Shamrock Wind reported 841.7 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.

How does Shamrock Wind compare to other plants?

By capacity, Shamrock Wind ranks #197 of 1,374 operating plants of the same technology nationally. It ranks #69 of 230 in TX.

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

Dispatch

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

Interconnection record

Nearby substations

Commercial, land, and environmental record

Land and environmental record

Related parties and identifiers

Relationship graph

Parties and identifiers

Reporting portfolio