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1098.2 MW Natural Gas operating in New Castle, DE — PJM Interconnection, LLC
1,098.2 MW
Nameplate Capacity
8
Generators
units
Natural Gas Fired Combined Cycle
Technology
1989
Operating Since
Coordinates
39.7436, -75.5072
County
New Castle, DE
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Calpine Mid-Atlantic Generation LLC | Calpine Mid-Atlantic Generation | — |
| Owner(s) | Calpine Mid-Atlantic Generation LLC | Constellation Energy | — |
| Status | Operating | — | — |
The Hay Road power plant is located in New Castle County, Delaware. It is the largest of four power plants in the state and ranks 143rd nationally out of 945 plants. The plant has a total capacity of 1098.2 MW across eight generators and is owned by Constellation Energy. Calpine Mid-Atlantic Generation LLC is the listed operator per EIA data. The plant began operating in 1989, utilizing natural gas-fired combined cycle technology as its primary fuel source.
Hay Road operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region. The plant's latest annual generation was 2,178,940 MWh, resulting in a capacity factor of 22.6%.
Generated from EIA, GEM, and public data sources
ISO/RTO
PJM
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
200.8K MWh
Latest Month
2.2M MWh
Annual Generation
22.6%
Capacity Factor
CO₂ Intensity
1028 lb/MWh
NOx
0.367 lb/MWh
SO₂
2013
$965/kW
Est. Construction Cost
Total estimated cost: $1.1B
Point of Interconnection
Nearest Substation
Hay Road
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
PJM
LMP Node
50892
Pricing Hub
WESTERN HUB
Node Source
EIA-860 direct report
Last updated 2026-04-09
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ask pi about Hay RoadPJM Interconnection, LLC (PJM)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
0.004 lb/MWh
CH₄
0.019 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
20.3%
Annual Net Gen
1957 GWh
CO₂eq
1029 lb/MWh
Subregion
RFC East