Ironwood LLC
Lebanon County, Pennsylvania · EIA plant ID 55337 · Operator: Helix, Ironwood LLC
Nameplate778MWSummer 760 MW
Generators3in service
Net generation3,948GWh12 mo to Aug 2026
Capacity factor59%gas/coal/oil units, summer MW
Heat rate7,427Btu/kWhfossil units, electric fuel, HHV
First online2001Runs as baseload
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), gas/coal/oil 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) |
|---|---|---|---|
| 2001 | 460.7 | — | — |
| 2002 | 1,594.8 | — | — |
| 2003 | 611.9 | 10.5% | 7,737 |
| 2004 | 1,022 | 17.4% | 7,090 |
| 2005 | 727.5 | 12.4% | 7,593 |
| 2006 | 1,310.3 | 22.4% | 7,250 |
| 2007 | 2,249 | 38.4% | 7,266 |
| 2008 | 1,606.9 | 27.3% | 7,289 |
| 2009 | 3,070.9 | 52.4% | 7,215 |
| 2010 | 3,646.4 | 62.2% | 7,140 |
| 2011 | 4,741.3 | 80.9% | 7,422 |
| 2012 | 4,398.7 | 75.9% | 7,183 |
| 2013 | 4,319.2 | 74.7% | 7,094 |
| 2014 | 5,208.3 | 90.1% | 7,100 |
| 2015 | 4,868 | 84.2% | 7,378 |
| 2016 | 5,397.6 | 93.1% | 7,284 |
| 2017 | 4,849.4 | 79.1% | 7,211 |
| 2018 | 5,209.8 | 85.0% | 7,534 |
| 2019 | 4,843.5 | 80.1% | 7,460 |
| 2020 | 4,869.6 | 77.6% | 7,158 |
| 2021 | 4,394.6 | 70.5% | 7,134 |
| 2022 | 5,136.6 | 82.4% | 7,149 |
| 2023 | 4,241.8 | 63.7% | 7,110 |
| 2024 | 4,407.3 | 66.0% | 7,224 |
| 2025 | 4,899.1 | 73.6% | 7,268 |
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 |
|---|---|---|---|---|---|---|---|---|
| CT1 | Natural Gas Fired Combined Cycle | CT | 259.2 | 261.6 | Dec 2001 | Operating | — | coming soon |
| CT2 | Natural Gas Fired Combined Cycle | CT | 259.2 | 261.6 | Dec 2001 | Operating | — | coming soon |
| ST4 | Natural Gas Fired Combined Cycle | CA | 259.2 | 236.8 | Dec 2001 | Operating | — | coming soon |
Owner / operator
Operator: Helix, Ironwood LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Helix, Ironwood LLC | 100.0% | 778 MW |
Nearby plants
Within 80 km.
| GLRA Landfill | 3 MW | 10.9 km |
| Fort Indiantown Gap | 3 MW | 19.5 km |
| Pine Grove | 5 MW | 22.8 km |
| TPE Pennsylvania Solar 1, LLC | 4 MW | 24.2 km |
| Ephrata PA BTM | 5 MW | 24.5 km |
| Mount Joy Wire | 1 MW | 28.6 km |