Sweetwater Wind 4 LLC
Nolan County, Texas · EIA plant ID 56337 · Operator: Leeward Asset Management, LLC
Nameplate241MWSummer 241 MW
Generators1in service
Net generation632GWh12 mo to Aug 2026
Capacity factor30%wind units, summer MW
Heat rate—thermal plants only
First online2007
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) |
|---|---|---|---|
| 2007 | 365.5 | 25.8% | — |
| 2008 | 698.3 | 33.0% | — |
| 2009 | 683.6 | 32.4% | — |
| 2010 | 667.9 | 31.6% | — |
| 2011 | 733.7 | 34.8% | — |
| 2012 | 714.7 | 33.8% | — |
| 2013 | 706.3 | 33.5% | — |
| 2014 | 720.4 | 34.1% | — |
| 2015 | 609.6 | 28.9% | — |
| 2016 | 690 | 32.6% | — |
| 2017 | 685.5 | 32.5% | — |
| 2018 | 694.8 | 32.9% | — |
| 2019 | 705.3 | 33.4% | — |
| 2020 | 699.5 | 33.0% | — |
| 2021 | 632.7 | 30.0% | — |
| 2022 | 606.3 | 28.7% | — |
| 2023 | 621.4 | 29.4% | — |
| 2024 | 621.9 | 29.4% | — |
| 2025 | 633.4 | 30.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| SW4 | Onshore Wind Turbine | WT | 241 | 241 | May 2007 | Operating | — | mitsubishi MWT-1000 |
Owner / operator
Operator: Leeward Asset Management, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Leeward Asset Management, LLC | 100.0% | 241 MW |
Nearby plants
Within 80 km.
| Sweetwater Wind 5 | 81 MW | 9.5 km |
| Sweetwater Wind 3 LLC | 135 MW | 10.5 km |
| Maryneal Windpower | 182 MW | 13.1 km |
| Champion Wind Farm LLC | 127 MW | 14.6 km |
| Sweetwater Wind 2 LLC | 99 MW | 15.5 km |
| Sweetwater BESS | 10 MW | 18.1 km |