Merck Rahway Power Plant
Natural gas power plant in Union County, New Jersey. 15.8 MW of nameplate capacity across 3 generators, operated by Merck & Co Inc.
Also known as EIA plant 10224
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 15.8 MWNatural gas 15.3 · Solar 0.5
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- January 2004First generator online
- Operator
- Merck & Co IncEIA operator ID 12311
- Grid
- PJMBalancing authority PJM
- Price nodes
- None linkedNo verified ISO node
- Location
- Union County, NJ40.6156, −74.2653
- EIA plant ID
- 10224EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Merck Rahway produces
Free · EIA-923Net generation, 2025
39.3 GWh
39,313 MWh, final
Capacity factor, 2025
21.6%
2024: 19.2%
January to July 2026
25.4 GWh
Provisional
Range, 2015 to 2025
4.2–48.4
GWh a year. Low 2016, high 2020
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 41,283 | Not reported | 12 of 12 |
| 2002 | 39,781 | Not reported | 12 of 12 |
| 2003 | 47,579 | Not reported | 12 of 12 |
| 2004 | 45,590 | Not reported | 12 of 12 |
| 2005 | 51,410 | Not reported | 12 of 12 |
| 2006 | 44,620 | Not reported | 12 of 12 |
| 2007 | 41,864 | Not reported | 12 of 12 |
| 2008 | 37,353 | Not reported | 12 of 12 |
| 2009 | 34,645 | Not reported | 12 of 12 |
| 2010 | 37,003 | Not reported | 12 of 12 |
| 2011 | 37,154 | 26.8% | 12 of 12 |
| 2012 | 29,492 | 21.2% | 12 of 12 |
| 2013 | 25,732 | 18.6% | 12 of 12 |
| 2014 | 30,404 | 22.0% | 12 of 12 |
| 2015 | 14,872 | 10.7% | 12 of 12 |
| 2016 | 4,233 | 3.0% | 12 of 12 |
| 2017 | 16,530 | Not reported | 12 of 12 |
| 2018 | 35,290 | Not reported | 12 of 12 |
| 2019 | 43,277 | 23.8% | 12 of 12 |
| 2020 | 48,393 | 26.5% | 12 of 12 |
| 2021 | 43,133 | 23.7% | 12 of 12 |
| 2022 | 37,342 | 20.5% | 12 of 12 |
| 2023 | 42,309 | 23.2% | 12 of 12 |
| 2024 | 35,123 | 19.2% | 12 of 12 |
| 2025 | 39,313 | 21.6% | 12 of 12 |
| 2026 (provisional, partial year) | 25,383 | 24.0% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN9 | Natural Gas Steam Turbine | 10.8 | January 2004 |
| GEN9A | Natural Gas Steam Turbine | 4.5 | December 2017 |
| SOLAR | Solar Photovoltaic | 0.5 | December 2005 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Merck & Co Inc as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Merck Rahway
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Questions about Merck Rahway
How much power does Merck Rahway Power Plant produce?
Merck Rahway Power Plant reported 39,313 MWh (39.3 GWh) of net generation in 2025, a 21.6% capacity factor on 15.8 MW of nameplate capacity. From January to July 2026 it reported 25.4 GWh, which is provisional.
Where is Merck Rahway Power Plant?
Merck Rahway Power Plant is in Union County, New Jersey, at 40.6156, −74.2653. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Merck Rahway Power Plant?
EIA-860M for August 2026 lists Merck & Co Inc as the operator (EIA operator ID 12311). The operator is not always the owner.
When did Merck Rahway Power Plant start operating?
Its first generator began operating in January 2004, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page