Electric generating plantEIA plant no. 56491

Dean Drive Area Electric Generators

Type
Petroleum Liquids
Status
Retired March 2019
Nameplate (when running)
3.2 MW
Units
2
In service since
2007
Operator
City of Manassas - (VA)
Location
Manassas, Manassas City County, Virginia

Dean Drive Area Electric Generators is retired. EIA's monthly generator inventory (EIA-860M, August 2026) lists every generator at this oil plant as retired; the last one retired in March 2019. It is not counted among Virginia's operating plants or in any ranking on this site.

The figures below describe the plant when it ran: equipment from EIA Form 860 (2024).

The 3.2 MW is nameplate capacity: the most this plant's generators are rated to produce, not what it actually generates. EPA eGRID reports no positive net generation for it this year.

How it works

A reciprocating-engine plant

oil1pistons fire like a car engine2generator
  1. oil burns in cylinders, driving pistons — the same principle as a truck engine, much larger.
  2. The crankshaft turns a generator.
  3. Plants are built from several identical engines, so they can run one at a time or all together.

Why the numbers look like this: engines start in minutes and come in small blocks, so they show up at landfills, on islands and as backup or peaking units — places that need power in small, fast pieces.

This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.

Natural GasOilSolarBiomass

Location

Address9723 Dean Drive
CityManassas
CountyManassas City County
StateVirginia
ZIP20110
Coordinates38.74860, -77.49080
OperatorCity of Manassas - (VA)

Generators (2)

IDTechnologyFuelNameplate capacityStatusOnline
PG1Petroleum LiquidsDistillate Oil1.6 MWRetired2007
PG2Petroleum LiquidsDistillate Oil1.6 MWRetired2007

Grid context

NERC RegionSERC
Balancing AuthorityPJM Interconnection, LLC

About Oil plants

Oil-fired plants typically run only during peak demand or grid emergencies because oil is expensive compared to gas and coal. Per megawatt-hour, they emit nearly as much CO₂ as coal.

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