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Silas Ray — Power plant · Gas, combined cycle · Brownsville Public Utilities BoardHecate Grid East Valley Storage — Announced · Storage · TX · 255 MW · 3.3 km awayResaca Oasis Storage — Contracted · Storage · TX · 200.7 MW · 16.6 km away
  • Combustion
  • Storage
  • In development
  • Operating
  • 10 · 100 · 1,000 MW

Silas Ray

Power plant · Gas, combined cycle

Key facts

Power plant · Gas, combined cycleran 4% of 2025 Operating
Capacity
Capacity: sourceEIA-860M · Open licenseMW
Commissioned
1959
Net generation, 2025
51,943 MWh
Grid
138 kV to Brownsville Public Utilities Board (ERCO)
Location
Cameron County, Texas

Output

Net generation MWh by year, 2001 to 2025
Fuel burned MMBtu by year, 2001 to 2025
  • Gas
  • Oil

Operations detail

Details

Who’s behind it

Owner
Public Utilities Board of the City of Brownsville Texas

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Technology
Gas, combined cycle source: “Natural Gas Fired Combined Cycle”
Age
67 years since 1959
Unused energy
1,196 GWh 2025Unused energyA lead, not a guarantee: MW × hours × (1 − capacity factor) for the latest year (EIA-923), gas, coal and oil plants only. Air-permit run-hour caps, heat rate (cost to run) and capacity-market or reliability obligations can rule it out.
Heat rate
13,234 Btu/kWh 2025
All 7 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
AttributeValue
EPA greenhouse gas reporting (GHGRP)
EPA FRS ID
110007194847
Subparts reported
D
NAICS code
221112
Subpart PP (CO2 supply)
No
Subpart RR (geologic sequestration)
No
Subpart UU (CO2 injection)
No
Reporting year
2023
GHGRP facility ID
1005210
Eia status
By code
OP
Mw
136
Units
3
SB
Mw
6.50
Units
5
Standby mw
6.50
Status rule
some_units_retired
In service mw
142.5
Out of service mw
0
Fuel burned (MMBtu), 2025687,391
Capacity factor, 20250.042
Heat rate (Btu/kWh), 202513,233.6
Net generation (MWh), 202551,943
Balancing authority codeERCO

Retirement

EIA-860M September 2026StatusSome generators have retired; the rest of the plant is still in service. As of EIA-860M for September 2026.
Capacity retired
27.9 MW
Generators retired
4
Capacity still in service
142.5 MW
GeneratorTechnologyNameplateStateDate
5Natural Gas Steam Turbine24 MWRetiredApril 2016
DG-2Petroleum Liquids1.3 MWRetiredMay 2019
DG-7aPetroleum Liquids1.3 MWRetiredMay 2019
DG-7bPetroleum Liquids1.3 MWRetiredMay 2019
By technology
TechnologyRetiredScheduled to retire
Natural Gas Steam Turbine24 MW
Petroleum Liquids3.9 MW

Grid

EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).
Grid voltage at the plant
138 kV
Transmission or distribution system owner
Brownsville Public Utilities Board
Balancing authority
Electric Reliability Council of Texas, Inc.
NERC region
TRE
Transmission lines within 25 km (10)
Connection points within 25 km (1)
Can the connection be reused?

A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.

Ownership

2 companies2
CompanyRoleShareAs ofSource
Brownsville Public Utilities Board Operator EIA-860M
PUBLIC UTILITIES BOARD OF THE CITY OF BROWNSVILLE TEXAS Owner 100.0% Dec 31, 2023 EPA GHGRP

Timeline

  • Stated Units DG-2, DG-7a, DG-7b scheduled to retire, 3.9 MW · EIA-860M
  • Stated Unit 5 scheduled to retire, 24 MW · EIA-860M
  • In service · EIA-860M

Sources

6 sources

Sources EIA-860M · OpenStreetMap · ERCOT · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)

© OpenStreetMap contributors

Sources

Every source and license · Attribution

View at source

Around this plant

Nearby

within 25 km
ProjectKindAwayMW
Hecate Grid East Valley Storage Announced Storage 3.3 km 255
Resaca Oasis Storage Contracted Storage 16.6 km 200.7

Sources EIA-860M · ERCOT

Sources

  • EIA-860MOpen license · retrieved Nov 4, 2026
  • ERCOTOpen license · retrieved Nov 4, 2026

Attribution