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Florence Mill — Power plant · Biomass · WestRock-FlorenceRhubarb One SC — Filed · Solar · SC · 9.6 MW · 8.6 mi awayMcCormick Solar — Postponed · Solar · SC · 2 MW · 10.1 mi awayMYRA - Building 1 (Marion data centre) — Filed · Large load · SC · 12.3 mi away
  • Wind & solar
  • Bioenergy
  • Loads
  • In development
  • Operating
  • Size not stated
  • 10 · 100 · 1,000 MW

Florence Mill

Power plant · Biomass

Key facts

Power plant · Biomassran 52% of 2025 Operating
Capacity
Capacity: sourceEIA-860M · Open licenseMW
Commissioned
1974
Net generation, 2025
419,390 MWh
Grid
115 kV to Duke Energy Progress - (NC) (CPLE)
Location
Florence County, South Carolina

Output

Net generation MWh by year, 2001 to 2026
Fuel burned MMBtu by year, 2001 to 2026
  • Gas
  • Coal
  • Oil
  • Biomass and waste

Operations detail

Details

Who’s behind it

Owner
Westrock CO

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Technology
Biomass source: “Wood/Wood Waste Biomass”
Age
52 years since 1974
All 6 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
AttributeValue
Gem
Parents
Name
Smurfit Westrock PLC
Share pct
100
Gem entity id
E100001011030
Unit ids
G100000102776, G100000202485, G100001055784, G100001055785
Location id
L100000104173
Eia plant ids
806, 50806
EPA greenhouse gas reporting (GHGRP)
EPA FRS ID
110056961890
Subparts reported
AA, C, TT
NAICS code
322130
Subpart PP (CO2 supply)
No
Subpart RR (geologic sequestration)
No
Subpart UU (CO2 injection)
No
Reporting year
2023
GHGRP facility ID
1000319
Fuel burned (MMBtu), 202514,632,565
Capacity factor, 20250.523
Net generation (MWh), 2025419,389.9
Balancing authority codeCPLE
Data notes (1)
  • Heat rate (Btu/kWh), 2025 not shown: computed 34890.1 outside 5000-30000 Btu/kWh

Retirement

EIA-860M September 2026StatusSome generators have retired; the rest of the plant is still in service. As of EIA-860M for September 2026.
Capacity retired
12.3 MW
Generators retired
1
Capacity still in service
91.5 MW
GeneratorTechnologyNameplateStateDate
GEN1Wood/Wood Waste Biomass12.3 MWRetiredDecember 2025

Grid

EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).
Grid voltage at the plant
115 kV
Transmission or distribution system owner
Duke Energy Progress - (NC)
Balancing authority
Duke Energy Progress East
NERC region
SERC
Transmission lines within 15 mi (1)
Can the connection be reused?

A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.

Ownership

2 companies2
CompanyRoleShareAs ofSource
WestRock-Florence Operator EIA-860M
WESTROCK CO Owner 100.0% Dec 31, 2023 EPA GHGRP

Timeline

  • Stated Unit GEN1 scheduled to retire, 12.3 MW · EIA-860M
  • In service · EIA-860M

Sources

6 sources

Sources EIA-860M · GEM · LBNL · 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-860MOpen license · retrieved Nov 4, 2026
  • GEMOpen license, with credit · retrieved Oct 26, 2026Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
  • LBNLOpen license, with credit · retrieved Nov 9, 2026Yin, Nait Belaid & Heleno (2026), Lawrence Berkeley National Laboratory, OEDI, CC BY 4.0: A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024. Modified by Inframation: HIFLD-side fields only, names re-cased, coordinates rounded.
  • EIAOpen license · retrieved Nov 1, 2026Source: 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)

Every source and license · Attribution

View at source

Around this plant

Nearby

within 15 mi
ProjectKindAwayMW
Rhubarb One SC Filed Solar 8.6 mi 9.6
McCormick Solar Postponed Solar 10.1 mi 2
MYRA - Building 1 (Marion data centre) Filed Large load 12.3 mi

Sources EIA-860M · FAA OE/AAA

Sources

  • EIA-860MOpen license · retrieved Nov 4, 2026
  • FAA OE/AAAOpen license · retrieved Nov 9, 2026

Attribution