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20.8 MW Natural Gas Steam Turbine (20 MW) + Solar Photovoltaic (1 MW) operating in Union, NJ — PJM Interconnection, LLC
20.8 MW
Nameplate Capacity
4
Generators
units
Hybrid (2)
Technology
Natural Gas Steam Turbine + Solar Photovoltaic
1977
Operating Since
Coordinates
30.6469, -96.3729
County
Union, NJ
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Merck & Co Inc | — | — |
| Owner(s) | Merck & Co Inc | — | — |
| Status | Operating | — | — |
The Merck Rahway Power Plant, located in Union County, New Jersey, has a total capacity of 20.8 MW. The plant, which began operating in 1977, is owned and operated by Merck & Co Inc. It is a hybrid plant utilizing both natural gas and solar photovoltaic technologies. Specifically, the plant employs natural gas steam turbines in addition to solar generation. The plant consists of 4 generators.
The plant operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region. In the most recent year of data, the plant generated 39,313 MWh, achieving a capacity factor of 21.6%. The solar photovoltaic portion of the plant uses a fixed tilt tracking system. The Merck Rahway Power Plant is ranked 24th out of 46 power plants in New Jersey and 1304th out of 1963 plants nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
PJM
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
4.1K MWh
Latest Month
39.3K MWh
Annual Generation
21.6%
Capacity Factor
CO₂ Intensity
644 lb/MWh
NOx
0.058 lb/MWh
SO₂
2013
$965/kW
Est. Construction Cost
Total estimated cost: $20.1M
Point of Interconnection
Nearest Substation
Pleasant Street Substation · 26 kV
Substation Distance
3.583 km
Operator
Public Service Enterprise Group
Coord Source
OSM spatial
Market Position
ISO/RTO Market
PJM
LMP Node
MINUEST 230 KV MINUESP
Pricing Hub
WESTERN HUB
Location Type
Generation Node
Node Source
Curated node match
Last updated 2026-03-15
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ask pi about Merck Rahway Power PlantPJM Interconnection, LLC (PJM)
Grid Voltage
26.4 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Industrial
Sector
Industrial CHP
0.003 lb/MWh
CH₄
0.012 lb/MWh
N₂O
0.001 lb/MWh
Capacity Factor
23.2%
Annual Net Gen
42 GWh
CO₂eq
645 lb/MWh
Subregion
RFC East