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40.5 MW Natural Gas Steam Turbine (3 MW) + Wood/Wood Waste Biomass (38 MW) operating in Darlington, SC
40.5 MW
Nameplate Capacity
3
Generators
units
Hybrid (2)
Technology
Natural Gas Steam Turbine + Wood/Wood Waste Biomass
1947
Operating Since
Coordinates
34.3853, -80.0678
County
Darlington, SC
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Sonoco Products Co | Sonoco Products | — |
| Owner(s) | Sonoco Products Co | Sonoco Products | — |
| Status | Operating | operating | — |
The Sonoco Products Co plant, located in Darlington County, South Carolina, is a 40.5 MW hybrid power plant primarily fueled by wood and wood waste biomass (WDS). The plant also utilizes natural gas steam turbine technology. It consists of three generators and began operating in 1947. The plant is owned and operated by Sonoco Products Co.
The plant operates within the Duke Energy Progress East balancing authority and the SERC NERC region. In the state of South Carolina, it ranks as the second largest of five WDS-fueled plants, and nationally it ranks 29th out of 97 similar plants. The latest annual generation data indicates an output of 65,407 MWh, resulting in a capacity factor of 18.4%.
Generated from EIA, GEM, and public data sources
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
Duke Energy Progress East (CPLE)
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.
4.5K MWh
Latest Month
65.4K MWh
Annual Generation
18.4%
Capacity Factor
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CO₂ Intensity
143 lb/MWh
NOx
0.771 lb/MWh
SO₂
0.125 lb/MWh
CH₄
0.332 lb/MWh
N₂O
0.044 lb/MWh
Capacity Factor
16.3%
Annual Net Gen
58 GWh
CO₂eq
164 lb/MWh
Subregion
SERC Virginia/Carolina
2013
$965/kW
Est. Construction Cost
Total estimated cost: $39.1M
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.
Last updated 2026-03-26
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