Timonium Fairgrounds

Timonium Fairgrounds is a 2 MW solar farm in Baltimore County, Maryland, operated by Madison Energy Holdings LLC. EIA-860M lists 1 generating unit here, inside PJM. Its unit entered service in 2020.

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
1.9 MW
1.9 MW net summer
Generating units
1
In service
2020
EIA plant ID
63904

Where it is

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County
Baltimore County, Maryland
Coordinates
39.447, -76.63
Balancing authority
PJM
Sector
IPP Non-CHP

Units, technology and status

Operator of record
Madison Energy Holdings LLC
Primary energy source
Solar
Technologies
Solar Photovoltaic
Status
Operating

Every plant Madison Energy Holdings LLC reports to EIA →

Timonium Fairgrounds: FAQ

Where is Timonium Fairgrounds?
In Baltimore County, Maryland (MD). 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 Timonium Fairgrounds?
2 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns Timonium Fairgrounds?
EIA-860M names Madison Energy Holdings 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 Timonium Fairgrounds LLC?
Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Madison Energy Holdings 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 "Timonium Fairgrounds LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Timonium Fairgrounds still running?
EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.