Seminole Mill
Seminole Mill is a 30 MW natural gas power plant in Duval County, Florida, operated by WestRock Seminole. EIA-860M lists 1 generating unit here. Its unit entered service in 1957.
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
- 30 MW
- 20 MW net summer
- Generating units
- 1
- In service
- 1957
- EIA plant ID
- 50803
Where it is
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- County
- Duval County, Florida
- Coordinates
- 30.4178, -81.5978
- Balancing authority
- JEA
- Sector
- Industrial CHP
Units, technology and status
- Operator of record
- WestRock Seminole
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Steam Turbine
- Status
- Operating
Seminole Mill: FAQ
- Where is Seminole Mill?
- In Duval County, Florida (FL). 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 Seminole Mill?
- 30 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns Seminole Mill?
- EIA-860M names WestRock Seminole 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 Seminole Mill LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — WestRock Seminole 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 "Seminole Mill LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Seminole Mill still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.