Natural gas plantOR

Threemile Digester

About this record

Morrow County, OR. Reports to the PacifiCorp West balancing authorityThe organization that balances electricity supply and demand in a reporting area.Definition ↗.

2024 inventory / 2024 calendar year

Nameplate capacity, operating generatorsFull nameplate rating of the operating generators, before ownership shares. MW measures rated power; annual output is energy in MWh.Definition ↗
4.8MW
Source & method

Sum of generator nameplate MW with operational status code OP in the inventory year; one row per generator; unscaled by ownership

2024 inventory · reported · derived · valid · final

3 of 3 operating generators included.

out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=58382

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Net generationEnergy produced over the stated period after the plant’s own use, including signed storage output. Plant output is not allocated to owners or buyers.Definition ↗
36,434MWh
2024
Source & method

Sum of EIA-923 annual net generation over the plant's unique prime-mover x energy-source rows; negative values (pumping, station use) retained

2024 calendar year · reported · derived · valid · final

2 of 2 plant x prime-mover x fuel rows included.

out_eia923__yearly_generation_fuel_combined.parquet; report_date=2024-01-01; plant_id_eia=58382

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Capacity factor
0.864fraction
2024
Source & method

Net generation MWh / (operating nameplate MW x hours in year); only when every operating generator was operating before the year began and none retired during it

2024 calendar year · reported · derived · valid · final

derived: net_generation_mwh@2024 / (nameplate_mw_op x 8784 h)

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Output over time

Net generation · MWhElectricity produced after the plant’s own use. A negative value means it used more electricity than it produced.Definition ↗

Annual net generation · MWh. Bars below zero are negative net generation; a hollow mark means not reported. Missing years are not filled.

Annual values as a table · MWh
Reported annual net generation. Missing years are not filled.
Calendar yearNet generation · MWhEvidence
201534,297MWhreported · final
201615,462MWhreported · final
201728,724MWhreported · final
201831,577MWhreported · final
201932,818MWhreported · final
202037,453MWhreported · final
202136,313MWhreported · final
202234,431MWhreported · final
202337,601MWhreported · final
202436,434MWhreported · final

Sum of unique plant x prime-mover x fuel rows per year; negative values retained; missing years absent, not zero; no monthly curve inferred

Why capacity and output differ: field note ↗

Ownership & operation

Ownership basisHow a generator's owners were established: from EIA-860's ownership schedule (reported), from EIA's rule that a unit absent from a complete schedule is wholly owned by its operator (derived), or unknown.Definition ↗
  • OperatorThe organization that runs a plant. It may have different owners.Definition ↗TMF-RIG, LLC
  • OwnerAn organization with a reported share of a generator. Owned MW applies that share to operating nameplate capacity; it does not establish who buys the output.Definition ↗ Independent power producerTMF-RIG, LLC
    4.8MW owned

Operating nameplate MW x ownership fraction, once per generator; reported schedule or EIA-860 schedule-4 default. Ownership source & rules ↗

Generators at this plant

Unscaled nameplateA generator’s rated maximum power, in MW. Capacity is a rating, not how much electricity it produced.Definition ↗
3 generators, including non-operating units where reported. Status is the inventory-year status.
GeneratorTechnology / statusWhether a generator or project is operating, planned, on standby or retired, as its source reports it.Definition ↗NameplateA generator’s rated maximum power, in MW. Capacity is a rating, not how much electricity it produced.Definition ↗ · MWOwnership basisHow a generator's owners were established: from EIA-860's ownership schedule (reported), from EIA's rule that a unit absent from a complete schedule is wholly owned by its operator (derived), or unknown.Definition ↗
GEN1 Natural Gas Internal Combustion Engineoperating (OP)1.6MW
EIA schedule default · derived

Generator absent from a complete Schedule 4 with ownership code S and known operator: wholly owned by the operator per EIA instructions (derived)

TMF-RIG, LLC · 1 fraction · 1.6MW owned · reported, derived

GEN2 Natural Gas Internal Combustion Engineoperating (OP)1.6MW
EIA schedule default · derived

Generator absent from a complete Schedule 4 with ownership code S and known operator: wholly owned by the operator per EIA instructions (derived)

TMF-RIG, LLC · 1 fraction · 1.6MW owned · reported, derived

GEN3 Natural Gas Internal Combustion Engineoperating (OP)1.6MW
EIA schedule default · derived

Generator absent from a complete Schedule 4 with ownership code S and known operator: wholly owned by the operator per EIA instructions (derived)

TMF-RIG, LLC · 1 fraction · 1.6MW owned · reported, derived

CO2 filed by EPA-monitored units

2024

None of this plant’s units is in EPA’s continuous monitoring programme for this year, so no CEMS data exists for it. That is not a claim of zero emissions: units outside the programme file nothing here. Source

Latest inventoryThe newest complete monthly inventory, with dated status and capacity changes beside the annual baseline totals.Definition ↗ · August 2026

Retired or cancelled

3 of 3 units changed since the baseline inventory: GEN1 retired or cancelled (August 2026); GEN2 retired or cancelled (August 2026); GEN3 retired or cancelled (August 2026).

Operating nameplate capacity, latest inventoryOperating nameplate MW in this monthly inventory. Compare it with the annual baseline; do not add the two inventories together.Definition ↗
Not applicable
· provisional
Source & method

Sum of nameplate MW over generators whose current-valid EIA-860M workbook assertion has status OP; dated by the complete inventory edition; never added to the baseline aggregate

2026-08-01 · reported · derived · not_applicable · provisional

3 of 3 current and historical generators included.

No unit operating in the latest inventory

Preliminary Monthly Electric Generator Inventory, August 2026; plant_id_eia=58382; report_date=2026-08-01

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Planned nameplate capacity, latest inventoryNameplate MW proposed or under construction in this monthly inventory, separate from operating MW. Planned dates are forecasts.Definition ↗
Not applicable
· provisional
Source & method

Sum of nameplate MW over generators whose current-valid EIA-860M workbook assertion is a proposal or construction stage (P, L, T, U, V, OT, TS); a proposal is not a commitment and its date is a forecast

2026-08-01 · reported · derived · not_applicable · provisional

3 of 3 current and historical generators included.

Preliminary Monthly Electric Generator Inventory, August 2026; plant_id_eia=58382; report_date=2026-08-01

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Retired or cancelled nameplate capacity, latest inventory
4.8MW
· provisional
Source & method

Sum of nameplate MW over generators whose current-valid EIA-860M workbook assertion is retired, cancelled or indefinitely postponed (RE, CN, IP); retired is not demolished

2026-08-01 · reported · derived · valid · provisional

3 of 3 current and historical generators included.

Preliminary Monthly Electric Generator Inventory, August 2026; plant_id_eia=58382; report_date=2026-08-01

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Units whose current EIA-860M assertion differs from the baseline inventory year.
UnitChangeAs ofBaseline → latest statusNameplate · MW
GEN1retired or cancelledAugust 2026OP → RE· retired March 20261.6MW → 1.6MW
GEN2retired or cancelledAugust 2026OP → RE· retired March 20261.6MW → 1.6MW
GEN3retired or cancelledAugust 2026OP → RE· retired January 20261.6MW → 1.6MW

Lifecycle of the units

Each unit's operating span from its reported operating date to its retirement date or to the August 2026 inventory (the vertical line). Dashed spans start at a planned operating date, a forecast; a short bar marks a planned retirement. Standby and out-of-service units are hatched.

Units as a table
Unit lifecycle from EIA-860M, August 2026.
UnitStateOperating sincePlannedRetiredMW
GEN1Retired or cancelledDecember 2012—March 20261.6MW
GEN2Retired or cancelledDecember 2012—March 20261.6MW
GEN3Retired or cancelledDecember 2012—January 20261.6MW

Independently dated by EIA-860M; the baseline facts above stay the validated edition. Planned dates are forecasts; retired is not demolished.

Geographic & reporting context

Balancing authority: PacifiCorp West

Approximate service areasAn approximate utility service area. The boundary cannot identify the supplier for a particular address.Definition ↗ containing the plant’s location. A geographic candidate, not a supply relationship.

Nearby transmission Context, not a connection

Within 3 km of the reported plant point, nearest first. BPA’s published lines, HIFLD-compiled lines of other owners and HIFLD 2022 substations; nearness does not establish an electrical connection.

Additional inventory facts

Generators listed
3count
Source & method

Generator rows for the plant in the inventory year, any status

2024 inventory · reported · derived · valid · final

out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=58382

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Operating generators
3count
Source & method

Generator rows with status code OP

2024 inventory · reported · derived · valid · final

out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=58382

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Sources for this record

Frozen citation page ↗

PUDL v2026.9.0, out_eia__yearly_plants

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, out_eia__yearly_generators

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, out_eia860__yearly_ownership

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

PUDL v2026.9.0, out_eia923__yearly_generation_fuel_combined

Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923

Data transformed by PUDL from U.S. EIA forms; selected fields republished; EIA data is public with dated acknowledgment (https://www.eia.gov/about/copyrights_reuse.php)

Release 20260929T050546Z-51ae0f7d3c78 · Record JSON