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- Combustion
- Wind & solar
- Under construction
- Operating
- 10 · 100 · 1,000 MW
Map
- Combustion
- Wind & solar
- Under construction
- Operating
Seminole Mill: location and 1 exact-grade project within 15 mi. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Seminole Mill
Power plant · Gas, steam turbine
Key facts
Power plant · Gas, steam turbineran 57% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1957
- Net generation, 2025
- 150,119 MWh
- Grid
- 138 kV to JEA (JEA)
- Location
- Duval County, Florida
- Operated by
- WestRock Seminole
Output
- Gas
- Unspecified fuel
Details
Who’s behind it
- Owner
- Westrock CO
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- Technology
- Gas, steam turbine source: “Natural Gas Steam Turbine”
- Age
- 69 years since 1957
- Unused energy
- 113 GWh 2025Unused energyA lead, not a guarantee: MW × hours × (1 − capacity factor) for the latest year (EIA-923), gas, coal and oil plants only. Air-permit run-hour caps, heat rate (cost to run) and capacity-market or reliability obligations can rule it out.
- Heat rate
- 22,947 Btu/kWh 2025
All 7 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Grid |
|
| EPA greenhouse gas reporting (GHGRP) |
|
| Fuel burned (MMBtu), 2025 | 3,444,728 |
| Capacity factor, 2025 | 0.571 |
| Heat rate (Btu/kWh), 2025 | 22,946.6 |
| Net generation (MWh), 2025 | 150,119 |
| Balancing authority code | JEA |
Ownership
2 companies2| Company | Role | Share | As of | Source |
|---|---|---|---|---|
| WestRock Seminole | Operator | EIA-860M | ||
| WESTROCK CO | Owner | 100.0% | Dec 31, 2023 | EPA GHGRP |
Timeline
- In service · EIA-860M
Sources
4 sourcesSources EIA-860M · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
Sources
- EIA-860M
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
Around this plant
Nearby
within 15 mi| Project | Kind | Away | MW |
|---|---|---|---|
| FRP Forest Trail Solar Under construction | Solar | 14.2 mi | 50 |
Sources EIA-860M