Bethlehem Power Plant
Northampton County, Pennsylvania · EIA plant ID 55690 · Operator: Calpine Bethlehem LLC
Nameplate1,153MWSummer 1,136 MW
Generators8in service
Net generation6,015GWh12 mo to Aug 2026
Capacity factor60%gas/coal/oil units, summer MW
Heat rate8,164Btu/kWhfossil units, electric fuel, HHV
First online2002Runs 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) |
|---|---|---|---|
| 2003 | 634.5 | 9.0% | 9,480 |
| 2004 | 919.6 | 9.6% | 8,605 |
| 2005 | 1,291.7 | 13.5% | 8,310 |
| 2006 | 1,009 | 10.5% | 8,347 |
| 2007 | 1,765 | 18.4% | 8,170 |
| 2008 | 1,321.4 | 13.3% | 8,391 |
| 2009 | 1,320.4 | 13.3% | 8,269 |
| 2010 | 2,791.5 | 28.2% | 8,088 |
| 2011 | 4,105.3 | 41.5% | 8,106 |
| 2012 | 5,811.7 | 58.6% | 8,022 |
| 2013 | 4,869.8 | 49.2% | 8,079 |
| 2014 | 4,703 | 47.3% | 8,106 |
| 2015 | 5,327.3 | 53.6% | 8,136 |
| 2016 | 5,343 | 53.6% | 8,102 |
| 2017 | 4,797.7 | 48.3% | 8,096 |
| 2018 | 4,159.6 | 41.9% | 8,088 |
| 2019 | 4,722 | 47.5% | 8,135 |
| 2020 | 5,602.1 | 56.2% | 8,070 |
| 2021 | 3,497.1 | 35.2% | 8,071 |
| 2022 | 4,361.8 | 43.9% | 8,024 |
| 2023 | 5,991.5 | 60.2% | 8,141 |
| 2024 | 5,938.1 | 59.5% | 8,074 |
| 2025 | 5,821.2 | 58.5% | 8,140 |
Fuel capability
Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusLikely still dual fuel
Liquid fuel burned · 36 mo1,481,744 MMBtu
Last month with liquid burnFeb 2026
Switch while operatingYes
Net summer MW on gas1,134
Net summer MW on oil1,134
Time gas → oilup to 6 h (EIA 6H)
Time oil → gasup to 6 h (EIA 6H)
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 |
|---|---|---|---|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | CT | 127 | 125 | Dec 2002 | Operating | — | coming soon |
| CTG2 | Natural Gas Fired Combined Cycle | CT | 127 | 125 | Dec 2002 | Operating | — | coming soon |
| CTG3 | Natural Gas Fired Combined Cycle | CT | 127 | 125 | Dec 2002 | Operating | — | coming soon |
| CTG5 | Natural Gas Fired Combined Cycle | CT | 127 | 125 | Jan 2003 | Operating | — | coming soon |
| CTG6 | Natural Gas Fired Combined Cycle | CT | 127 | 125 | Feb 2003 | Operating | — | coming soon |
| CTG7 | Natural Gas Fired Combined Cycle | CT | 127 | 125 | Apr 2003 | Operating | — | coming soon |
| STG4 | Natural Gas Fired Combined Cycle | CA | 195.5 | 193 | May 2003 | Operating | — | coming soon |
| STG8 | Natural Gas Fired Combined Cycle | CA | 195.5 | 193 | Dec 2003 | Operating | — | coming soon |
Owner / operator
Operator: Calpine Bethlehem LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Calpine Bethlehem LLC | 100.0% | 1,153 MW |
Nearby plants
Within 80 km.
| EDF Saucon Valley | 3 MW | 5.4 km |
| TalenEnergy Martin Creek LLC Allentown | retired | 12 km |
| UE-2202PA, LLC | 2 MW | 13.2 km |
| Uniqlo Phase 1 Solar Farm | 3 MW | 13.3 km |
| Milford Solar Farm (NJ) LLC | 8 MW | 13.4 km |
| Holland Solar Farm | 7 MW | 13.5 km |