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50.4 MW Black Liquor operating in Perry, MS
50.4 MW
Nameplate Capacity
2
Generators
units
Wood/Wood Waste Biomass
Technology
1984
Operating Since
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| 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
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
35.8K MWh
Latest Month
418.1K MWh
Annual Generation
94.0%
Capacity Factor
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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
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Market Position
LMP Node
SME.LEAFRIVER
Pricing Hub
—
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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