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47.4 MW Black Liquor operating in Marengo, AL
47.4 MW
Nameplate Capacity
2
Generators
units
Wood/Wood Waste Biomass
Technology
1982
Operating Since
Coordinates
32.4541, -87.9759
County
Marengo, AL
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | WestRock Mill Company, LLC | WestRock Mill Company LLC | — |
| Owner(s) | WestRock Mill Company, LLC | Smurfit Westrock | — |
| Status | Operating | operating | — |
The WestRock Demopolis Mill is a 47.4 MW biomass power plant located in Marengo County, Alabama. The plant began operating in 1982 and is owned by Smurfit Westrock, an Irish company. The operator listed with the EIA is WestRock Mill Company, LLC. The plant utilizes two generators powered by wood and wood waste biomass (BLQ).
In the most recent year of data, the WestRock Demopolis Mill generated 312,959 MWh of electricity, achieving a capacity factor of 75.2%. The balancing authority for the plant is Southern Company Services, Inc. - Trans, and it is located within the SERC NERC region. Among biomass plants in Alabama, it ranks 7th out of 9, and nationally it ranks 52nd out of 66.
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
115.0 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.
26.4K MWh
Latest Month
313.0K MWh
Annual Generation
75.2%
Capacity Factor
Forward-looking generation outlook with probabilistic ranges across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
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CO₂ Intensity
59 lb/MWh
NOx
0.905 lb/MWh
SO₂
2 lb/MWh
CH₄
0.150 lb/MWh
N₂O
0.033 lb/MWh
Capacity Factor
70.0%
Annual Net Gen
291 GWh
CO₂eq
72 lb/MWh
Subregion
SERC South
2013
$3,495/kW
Est. Construction Cost
Total estimated cost: $165.7M
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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This plant's balancing authority participates in the Southeast Energy Exchange Market (SEEM). SEEM is a bilateral exchange — no public nodal pricing.
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.
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