TB Flats
Carbon County, Wyoming · EIA plant ID 62516 · Operator: PacifiCorp
Nameplate503MWSummer 503 MW
Generators1in service
Net generation1,439GWh12 mo to Aug 2026
Capacity factor33%wind units, summer MW
Heat rate—thermal plants only
First online2021
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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), wind 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2021 | 443.3 | 39.9% | — |
| 2022 | 1,489 | 33.8% | — |
| 2023 | 1,316.8 | 29.9% | — |
| 2024 | 1,382.1 | 31.3% | — |
| 2025 | 1,361.9 | 30.9% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Onshore Wind Turbine | WT | 503.2 | 503.2 | Oct 2021 | Operating | — | vestas V136-4.2 |
Owner / operator
Operator: PacifiCorp. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| PacifiCorp | 100.0% | 503 MW |
Nearby plants
Within 80 km.
| Dunlap | 130 MW | 16.1 km |
| Two Rivers Wind Facility | — | 22.9 km |
| Ekola Flats | 251 MW | 29.1 km |
| Seven Mile Hill | 146 MW | 30.9 km |
| Boswell Wind | 330 MW | 41.6 km |
| Rock River I LLC | retired | 52.2 km |