In Philadelphia County, Pennsylvania (PA). 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 TJX Engine?

3 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.

EIA-860M names Onsite Partners, LLC 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 TJX Engine LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Onsite Partners, LLC 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 "TJX Engine LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is TJX Engine still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

TJX Engine

TJX Engine is a 3 MW natural gas power plant in Philadelphia County, Pennsylvania, operated by Onsite Partners, LLC. EIA-860M lists 1 generating unit here, inside PJM. Its unit entered service in 2021.

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 MW; 3 MW net summer
Generating units: 1
In service: 2021
EIA plant ID: 70215

Where it is

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County: Philadelphia County, Pennsylvania
Coordinates: 40.0905, -75.0143
Balancing authority: PJM
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Onsite Partners, LLC
Primary energy source: Natural gas
Technologies: Natural Gas Internal Combustion Engine
Status: Operating

Every plant Onsite Partners, LLC reports to EIA →

TJX Engine: FAQ

Where is TJX Engine?: In Philadelphia County, Pennsylvania (PA). 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 TJX Engine?: 3 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns TJX Engine?: EIA-860M names Onsite Partners, LLC 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 TJX Engine LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Onsite Partners, LLC 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 "TJX Engine LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is TJX Engine still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.