Gateway Gen
Prince William County, Virginia · EIA plant ID 7798 · Operator: City of Manassas - (VA)
Nameplate4MWSummer 3 MW
Generators2in service
Net generation0GWh12 mo to Dec 2025
Capacity factor1%gas/coal/oil units, summer MW
Heat rate5,287Btu/kWhfossil units, electric fuel, HHV
First online1996Runs as rarely runs
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 | 0.3 | 1.9% | 10,869 |
| 2002 | 0.3 | 2.3% | 11,481 |
| 2003 | 0.3 | 2.1% | 9,561 |
| 2004 | 0.3 | 2.0% | 9,545 |
| 2005 | 0.3 | 1.7% | 9,522 |
| 2006 | 0.2 | 1.1% | 9,573 |
| 2007 | 0.2 | 1.5% | 9,559 |
| 2008 | 0.1 | 0.9% | 7,145 |
| 2009 | 0.2 | 0.8% | 11,894 |
| 2010 | 0.1 | 0.4% | 6,274 |
| 2011 | 0 | 0.1% | 13,722 |
| 2012 | 0 | 0.1% | 22,778 |
| 2013 | 0 | 0.1% | 11,477 |
| 2014 | 0.1 | 0.2% | 12,783 |
| 2015 | 0.1 | 0.3% | 14,111 |
| 2016 | 0 | 0.1% | 16,857 |
| 2017 | 0 | 0.1% | 7,053 |
| 2018 | 0 | 0.1% | 9,541 |
| 2019 | 0.1 | 0.2% | 8,095 |
| 2020 | 0.2 | 0.6% | 8,310 |
| 2021 | 0.3 | 0.9% | 7,105 |
| 2022 | 0.4 | 1.2% | 10,046 |
| 2023 | 0.3 | 0.9% | 12,126 |
| 2024 | 0.3 | 0.8% | 10,586 |
| 2025 | 0.3 | 0.8% | 5,287 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Petroleum Liquids | IC | 1.8 | 1.7 | Mar 1996 | Operating | — | coming soon |
| 2 | Petroleum Liquids | IC | 1.8 | 1.7 | Jun 2009 | Operating | — | coming soon |
Owner / operator
Operator: City of Manassas - (VA). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Manassas - (VA) | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| VMEA 1 Credit Gen | 13 MW | 1.7 km |
| Godwin Drive Plant | 6 MW | 1.7 km |
| VMEA Peaking Gen | 6 MW | 1.7 km |
| Dominion/Lo Mar | 19 MW | 2.4 km |
| Church Street Plant | 4 MW | 5.1 km |
| Railroad Energy Center, LLC | — | 6.9 km |