Merck - Upper Gwynedd Solar Array
Merck - Upper Gwynedd Solar Array is a 2 MW solar farm in Montgomery County, Pennsylvania, operated by Merck - Upper Gwynedd Solar Array. EIA-860M lists 1 generating unit here, inside PJM. Its unit entered service in 2011.
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
- 1.5 MW
- 1.5 MW net summer
- Generating units
- 1
- In service
- 2011
- EIA plant ID
- 61198
Where it is
Loading map…
- County
- Montgomery County, Pennsylvania
- Coordinates
- 40.2154, -75.2831
- Balancing authority
- PJM
- Sector
- Commercial Non-CHP
Units, technology and status
- Operator of record
- Merck - Upper Gwynedd Solar Array
- Primary energy source
- Solar
- Technologies
- Solar Photovoltaic
- Status
- Operating
Every plant Merck - Upper Gwynedd Solar Array reports to EIA →
Merck - Upper Gwynedd Solar Array: FAQ
- Where is Merck - Upper Gwynedd Solar Array?
- In Montgomery 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 Merck - Upper Gwynedd Solar Array?
- 2 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns Merck - Upper Gwynedd Solar Array?
- EIA-860M names Merck - Upper Gwynedd Solar Array 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 Merck - Upper Gwynedd Solar Array LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Merck - Upper Gwynedd Solar Array 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 "Merck - Upper Gwynedd Solar Array LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Merck - Upper Gwynedd Solar Array still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.