Silas Ray
Cameron County, Texas · EIA plant ID 3559 · Operator: Brownsville Public Utilities Board
Nameplate143MWSummer 112 MW
Generators8in service
Net generation52GWh12 mo to Dec 2025
Capacity factor5%gas/coal/oil units, summer MW
Heat rate13,234Btu/kWhfossil units, electric fuel, HHV
First online1959Runs as peaking
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 21.3 | — | — |
| 2002 | 24.1 | — | — |
| 2003 | 108.6 | 15.6% | 10,655 |
| 2004 | 114.8 | 14.2% | 10,344 |
| 2005 | 161 | 13.8% | 11,313 |
| 2006 | 214.7 | 18.4% | 11,170 |
| 2007 | 51.7 | 4.4% | 10,418 |
| 2008 | 104.1 | 8.9% | 10,301 |
| 2009 | 80.4 | 6.9% | 10,805 |
| 2010 | 73.5 | 6.3% | 10,473 |
| 2011 | 105.8 | 9.1% | 10,682 |
| 2012 | 78.9 | 6.8% | 11,745 |
| 2013 | 79.9 | 6.9% | 10,518 |
| 2014 | 96.2 | 8.3% | 10,174 |
| 2015 | 40.1 | 3.4% | 11,392 |
| 2016 | 101 | 9.6% | 10,326 |
| 2017 | 59.2 | 5.9% | 10,720 |
| 2018 | 40.9 | 4.1% | 11,172 |
| 2019 | 66 | 6.6% | 10,830 |
| 2020 | 131.9 | 13.4% | 10,628 |
| 2021 | 76.6 | 7.8% | 11,277 |
| 2022 | 63.1 | 6.4% | 11,902 |
| 2023 | 125.1 | 12.8% | 11,838 |
| 2024 | 103.4 | 10.5% | 11,736 |
| 2025 | 51.9 | 5.3% | 13,234 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 10 | Natural Gas Fired Combustion Turbine | GT | 61 | 45 | Dec 2004 | Operating | — | coming soon |
| 6 | Natural Gas Fired Combined Cycle | CA | 25 | 20 | May 1959 | Operating | — | coming soon |
| 9 | Natural Gas Fired Combined Cycle | CT | 50 | 42 | Jun 1996 | Operating | — | coming soon |
| DG-3a | Petroleum Liquids | IC | 1.3 | 1 | Nov 2001 | Operating (Standby / backup) | — | coming soon |
| DG-3b | Petroleum Liquids | IC | 1.3 | 1 | Nov 2001 | Operating (Standby / backup) | — | coming soon |
| DG-4 | Petroleum Liquids | IC | 1.3 | 1 | Nov 2001 | Operating (Standby / backup) | — | coming soon |
| DG-6a | Petroleum Liquids | IC | 1.3 | 1 | Nov 2001 | Operating (Standby / backup) | — | coming soon |
| DG-6b | Petroleum Liquids | IC | 1.3 | 1 | Nov 2001 | Operating (Standby / backup) | — | coming soon |
| 5 | Natural Gas Steam Turbine | ST | 24 | 18 | May 1952 | Retired Apr 2016 | — | coming soon |
| DG-2 | Petroleum Liquids | IC | 1.3 | 1 | Nov 2001 | Retired May 2019 | — | coming soon |
| DG-7a | Petroleum Liquids | IC | 1.3 | 1 | Nov 2001 | Retired May 2019 | — | coming soon |
| DG-7b | Petroleum Liquids | IC | 1.3 | 1 | Nov 2001 | Retired May 2019 | — | coming soon |
Owner / operator
Operator: Brownsville Public Utilities Board. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Brownsville Public Utilities Board | 100.0% | 143 MW |
Nearby plants
Within 80 km.
| Hecate Grid East Valley Storage | — | 3.3 km |
| WAL456 | 1 MW | 7 km |
| Aggreko MSR Grid PC7 | 10 MW | 9.8 km |
| Villa Cavasos | 9 MW | 14.2 km |
| Resaca Oasis Storage | — | 16.6 km |
| SMT Los Fresnos LLC | 10 MW | 18 km |