Seminole Mill — Plant Summary
- EIA Plant ID
- 50803
- Capacity
- 30 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Steam Turbine
- Status
- Operating
- Location
- Duval, FL
- Operating Since
- 1957
- Generators
- 1
- Operator
- WestRock Seminole
- Parent Company
- —
- Annual Generation
- 138,720 MWh
- Capacity Factor
- 52.6%
- Balancing Authority
- JEA
- ISO/RTO
- —
- NERC Region
- SERC
Seminole Mill
OperatingNatural Gas
Ranked #57 of 69 Natural Gas plants in FL#1256 of 2009 nationally
30 MW Natural Gas operating in Duval, FL — JEA
EIAWD
30 MW
Nameplate Capacity
1
Generators
unit
Natural Gas Steam Turbine
Technology
1957
Operating Since
Location
Coordinates
30.4221, -81.6048
County
Duval, FL
Nearby Plants
- Anheuser-Busch JacksonvilleNatural Gas8.7 MW · 4.1 km
- Northside Generating StationDistillate Oil1407.1 MW · 5.0 km
- Jax LNGNatural Gas12.6 MW · 5.4 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | WestRock Seminole | — | — |
| Owner(s) | WestRock Seminole | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Seminole Mill is a 30 MW natural gas-fired power plant located in Duval County, Florida. The plant began operating in 1957 and is owned and operated by WestRock Seminole. It utilizes a single natural gas steam turbine generator. Seminole Mill operates within the JEA balancing authority and is part of the SERC NERC region.
In the most recent year with available data, Seminole Mill generated 138,720 MWh of electricity, achieving a capacity factor of 52.6%. The plant is ranked as the 56th largest in Florida out of 68 plants, and nationally it is ranked 1236 out of 1963 plants.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
SERC
Balancing Authority
JEA
Grid Voltage
138 kV
Regulatory Status
NR
Entity Type
Commercial
Sector
Industrial CHP
Generation
12.0K MWh
Latest Month
138.7K MWh
Annual Generation
52.6%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (10)Beta
General
‘Difficult choices:’ Property tax increase looms for Seminole County homeowners
SEMINOLE COUNTY, Fla. – Homeowners in Seminole County will likely see the first increase to their property tax rate in over a decade as...
WKMG·8 months ago
Regulatory·other
Seminole County considers property tax increase. Here’s how much you could pay
SEMINOLE COUNTY, Fla. – Seminole County's proposed $1.2 billion budget comes with possible tax hikes as it finds ways to maintain services,...
WKMG·9 months ago
General
Duke Energy's solar investment in Jefferson promises cleaner energy but higher bills
The Bailey Mill Renewable Energy Center will bring renewable infrastructure to Jefferson County, leading to increased electricity costs for...
WTXL ABC 27 Tallahassee News·1 years ago
General
Duke Energy's solar investment in Jefferson promises cleaner energy but higher bills
The Bailey Mill Renewable Energy Center will bring renewable infrastructure to Jefferson County, leading to increased electricity costs for...
WTXL ABC 27 Tallahassee News·1 years ago
Last updated 2026-03-26
View all 10 articles