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50.4 MW Black Liquor operating in Perry, MS — Southern Company Services, Inc. - Trans
50.4 MW
Nameplate Capacity
2
Generators
units
Wood/Wood Waste Biomass
Technology
1984
Operating Since
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Leaf River Cellulose LLC | Leaf River Cellulose LLC | — |
| Owner(s) | Leaf River Cellulose LLC | Koch Industries | — |
| Status | Operating | operating | — |
Leaf River Cellulose LLC is a 50.4 MW biomass power plant located in Perry County, Mississippi. The plant began operating in 1984 and is owned and operated by Leaf River Cellulose LLC, a subsidiary of Koch Industries. The facility utilizes wood and wood waste biomass (BLQ) as its primary fuel source and consists of two generators. It is connected to the grid within the Southern Company Services, Inc. - Trans balancing authority, which falls under the SERC NERC region.
In the most recent year of data, Leaf River Cellulose LLC generated 418,130 MWh of electricity, achieving a capacity factor of 94.0%. The plant ranks 4th out of 4 biomass plants in Mississippi and 48th out of 66 nationally.
Generated from EIA, GEM, and public data sources
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
Southern Company Services, Inc. - Trans (SOCO)
Grid Voltage
69.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Industrial
Sector
Industrial CHP
35.8K MWh
Latest Month
418.1K MWh
Annual Generation
94.0%
Capacity Factor
CO₂ Intensity
26 lb/MWh
NOx
0.650 lb/MWh
SO₂
3 lb/MWh
CH₄
0.103 lb/MWh
N₂O
0.030 lb/MWh
Capacity Factor
95.4%
Annual Net Gen
421 GWh
CO₂eq
37 lb/MWh
Subregion
SERC South
2013
$3,495/kW
Est. Construction Cost
Total estimated cost: $176.1M
Market Position
LMP Node
SME.LEAFRIVER
Pricing Hub
—
Last updated 2026-03-26
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