In Carroll County, Indiana (IN). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

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

EIA-860M names Northern Indiana Pub Serv Co 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 Oakdale LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Northern Indiana Pub Serv Co 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 "Oakdale LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Oakdale still running?

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

Oakdale

Oakdale is a 12 MW hydroelectric power plant in Carroll County, Indiana, operated by Northern Indiana Pub Serv Co. EIA-860M lists 3 generating units here, inside MISO. Its units entered service in 1925.

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: 11.8 MW; 6 MW net summer
Generating units: 3
In service: 1925
EIA plant ID: 999

Where it is

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County: Carroll County, Indiana
Coordinates: 40.6564, -86.7528
Balancing authority: MISO
Sector: Electric Utility

Units, technology and status

Operator of record: Northern Indiana Pub Serv Co
Primary energy source: Hydro
Technologies: Conventional Hydroelectric
Status: Operating

Every plant Northern Indiana Pub Serv Co reports to EIA →

Oakdale: FAQ

Where is Oakdale?: In Carroll County, Indiana (IN). 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 Oakdale?: 12 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
Who owns Oakdale?: EIA-860M names Northern Indiana Pub Serv Co 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 Oakdale LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Northern Indiana Pub Serv Co 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 "Oakdale LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Oakdale still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.