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5.5 MW Batteries (1 MW) + Natural Gas Internal Combustion Engine (5 MW) operating in Orange, CA — California Independent System Operator
5.5 MW
Nameplate Capacity
4
Generators
units
Hybrid (2)
Technology
Batteries + Natural Gas Internal Combustion Engine
2006
Operating Since
Coordinates
33.6228, -117.9364
County
Orange, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Hoag Memorial Presbyterian Hospital | — | — |
| Owner(s) | Hoag Memorial Presbyterian Hospital | — | — |
| Status | Operating | — | — |
The Hoag Hospital Cogen Plant is a 5.5 MW hybrid power plant located in Orange County, California. The plant began operating in 2006 and is owned and operated by Hoag Memorial Presbyterian Hospital. It utilizes natural gas as its primary fuel source, employing natural gas internal combustion engine technology. The facility also includes a 4.2 MWh battery energy storage system (BESS) with a 4.2-hour duration, utilizing lithium-ion battery (LIB) chemistry.
The plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. In the most recent year of data, the plant generated 27,441 MWh of electricity, achieving a capacity factor of 57.0%. The Hoag Hospital Cogen Plant ranks 201 out of 297 power plants in California and 1562 out of 1963 plants nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
California Independent System Operator (CISO)
Grid Voltage
12.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Commercial
Sector
Commercial CHP
2.3K MWh
Latest Month
27.4K MWh
Annual Generation
57.0%
Capacity Factor
CO₂ Intensity
931 lb/MWh
NOx
21 lb/MWh
SO₂
0.025 lb/MWh
CH₄
0.018 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
13.4%
Annual Net Gen
5 GWh
CO₂eq
932 lb/MWh
Subregion
WECC California
2013
$965/kW
Est. Construction Cost
Total estimated cost: $5.3M
Point of Interconnection
Nearest Substation
Costa Mesa
Substation Distance
4.602 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
HUNT2G_7_B1
Pricing Hub
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
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