WestRock (WA)Retired

Pierce County, Washington · EIA plant ID 57099 · Operator: WestRock (WA)

OtherBA: TPWR

×64 MW other retired since 2020 (latest Nov 2023)

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Nameplate—MWSummer — MW

Generators0in service

Net generation—GWh12 mo

Capacity factor—no 923 generation in the last 12 months

Heat rate—Btu/kWhfossil units, electric fuel, HHV

First online—

Monthly net generation

EIA-923, all units at the plant. Net of station use; storage can go negative.

FinalPreliminary

Capacity factor by year

Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.

Heat rate by year

Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.

Annual data table

Year	Net GWh	Capacity factor	Heat rate (Btu/kWh)
2009	164.4	66.2%	11,441
2010	266.4	54.1%	11,468
2011	250	50.5%	11,458
2012	265.2	53.5%	—
2013	295	60.1%	—
2014	311.2	63.9%	11,463
2015	343.9	70.2%	11,489
2016	339.4	69.1%	11,477
2017	330.4	67.9%	11,556
2018	310.2	63.3%	11,522
2019	287.8	58.8%	11,487
2020	311.5	61.6%	11,414
2021	275.6	54.0%	11,391
2022	234.2	47.7%	12,725
2023	179.3	42.9%	11,843

Generators

EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.

Gen ID	Technology	Prime mover	Nameplate MW	Summer MW	Online	Status	Planned retirement	OEM / model
STG1	Wood/Wood Waste Biomass	ST	64	55	Jul 2009	Retired Nov 2023	—	coming soon

Owner / operator

Operator: WestRock (WA). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).

Nearby plants

Within 80 km.

Greenwater BESS	—	15.5 km
Frederickson Power LP	318 MW	20.6 km
Frederickson	178 MW	21.3 km
LRI LFGTE Facility	5 MW	33.9 km
Cedar Hills	5 MW	35.9 km
Yelm	12 MW	36 km