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710.3 MW Natural Gas Steam Turbine (698 MW) + Petroleum Liquids (13 MW) operating in New Castle, DE — PJM Interconnection, LLC
710.3 MW
Nameplate Capacity
4
Generators
units
Hybrid (2)
Technology
Natural Gas Steam Turbine + Petroleum Liquids
1954
Operating Since
Coordinates
39.7389, -75.5038
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 | — | — |
Edge Moor is a 710.3 MW hybrid power plant located in New Castle County, Delaware. The plant, which began operating in 1954, is owned by Constellation Energy and operated by Calpine Mid-Atlantic Generation LLC. The primary fuel source is natural gas, and the plant utilizes natural gas steam turbine technology. Petroleum liquids are also listed as a fuel type. Edge Moor consists of four generators.
The plant operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region. In terms of size, Edge Moor is the second-largest power plant in Delaware out of four total plants, and ranks 303rd nationally out of 945 plants. The latest annual generation data indicates an output of 332,954 MWh, resulting in a capacity factor of 5.3%.
Generated from EIA, GEM, and public data sources
ISO/RTO
PJM
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC (PJM)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
8.3K MWh
Latest Month
333.0K MWh
Annual Generation
5.3%
Capacity Factor
CO₂ Intensity
1613 lb/MWh
NOx
0.839 lb/MWh
SO₂
0.246 lb/MWh
CH₄
0.031 lb/MWh
N₂O
0.003 lb/MWh
Capacity Factor
3.6%
Annual Net Gen
222 GWh
CO₂eq
1614 lb/MWh
Subregion
RFC East
2013
$765/kW
Est. Construction Cost
Total estimated cost: $543.1M
Market Position
ISO/RTO Market
PJM
LMP Node
50894
Pricing Hub
WESTERN HUB
Node Source
EIA-860 direct report
Last updated 2026-03-26
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