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710.7 MW Natural Gas operating in San Diego, CA
710.7 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combined Cycle
Technology
2009
Operating Since
Coordinates
32.5815, -116.9150
County
San Diego, CA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Otay Mesa Energy Center LLC | Otay Mesa Energy Center | — |
| Owner(s) | Otay Mesa Energy Center LLC | Constellation Energy | — |
| Status | Operating | — | — |
The Otay Mesa Generating Project is a 710.7 MW natural gas-fired combined cycle power plant located in San Diego County, California. The plant began operating in 2009 and consists of 3 generators. It is owned by Constellation Energy and operated by Otay Mesa Energy Center LLC. The plant is interconnected to the California Independent System Operator (CAISO) grid and falls within the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year of data, the Otay Mesa Generating Project produced 1,629,902 MWh of electricity, operating at a capacity factor of 26.2%. The plant is a significant contributor to California's power supply, ranking as the 14th largest out of 76 power plants in the state and 302nd largest out of 945 plants nationally. Recent news coverage indicates at least one regulatory issue affecting the plant.
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
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
84.9K MWh
Latest Month
1.6M MWh
Annual Generation
26.2%
Capacity Factor
Forward-looking generation outlook with probabilistic ranges across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
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CO₂ Intensity
848 lb/MWh
NOx
0.045 lb/MWh
SO₂
0.004 lb/MWh
CH₄
0.016 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
36.1%
Annual Net Gen
2179 GWh
CO₂eq
849 lb/MWh
Subregion
WECC California
2013
$965/kW
Est. Construction Cost
Total estimated cost: $685.9M
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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Market Position
ISO/RTO Market
CAISO
LMP Node
—
Pricing Hub
TH_SP15_GEN-APND
Node Source
Shared substation inference
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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