Gateway Gen
Gateway Gen is a 4 MW oil-fired power plant in Prince William County, Virginia, operated by City of Manassas - (VA). EIA-860M lists 2 generating units here, inside PJM. Its units entered service between 1996 and 2009.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 3.6 MW
- 3.4 MW net summer
- Generating units
- 2
- In service
- 1996–2009
- EIA plant ID
- 7798
Where it is
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- County
- Prince William County, Virginia
- Coordinates
- 38.7253, -77.5097
- Balancing authority
- PJM
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- City of Manassas - (VA)
- Primary energy source
- Petroleum
- Technologies
- Petroleum Liquids
- Status
- Operating
Gateway Gen: FAQ
- Where is Gateway Gen?
- In Prince William County, Virginia (VA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Gateway Gen?
- 4 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
- Who owns Gateway Gen?
- EIA-860M names City of Manassas - (VA) as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Gateway Gen LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — City of Manassas - (VA) here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Gateway Gen LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Gateway Gen still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.