Miramar Energy Facility

🔥 Natural GasElectric Utility106 MW capacity

245th largest plant in California · 2357th nationally

Miramar Energy Facility is a natural gas power plant in California with a nameplate capacity of 106 MW. It generates roughly 23.0k MWh per year — enough to power about 2,187 average U.S. homes.

Its capacity factor of 2% reflects intermittent or peaking operation. At 1227 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.

PeakingMid-meritBaseload0%40%80%100%2%
Peaking — intermittent or backup
Capacity106 MWnameplate
Annual Generation23.0k MWhEPA eGRID
Capacity Factor2%of theoretical max
Annual CO₂14.1kmetric tons

Location

Plant NameMiramar Energy Facility
OperatorSan Diego Gas & Electric Co
CitySan Diego
CountySan Diego County
StateCalifornia
ZIP92121
Coordinates32.87690, -117.16639

This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.

Natural GasHydroelectricSolarBiomassBattery Storage

Generators (2)

IDTechnologyFuelCapacityStatusOnline
1Natural Gas Fired Combustion TurbineNatural Gas53.0 MWOperating2005
2Natural Gas Fired Combustion TurbineNatural Gas53.0 MWOperating2009

Emissions (annual)

CO₂14.1k metric tons
NOₓ2 metric tons
CO₂ Rate1227 lb/MWh
U.S. grid average800 lb/MWhNatural gas combined-cycle average900 lb/MWhThis plant1,226 lb/MWhCoal plant average2,100 lb/MWh

Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.

Grid context

NERC RegionWECC
Balancing AuthorityCalifornia Independent System Operator

About Natural Gas plants

Natural gas plants are the workhorse of the modern grid. Combined-cycle units achieve very high efficiency and can ramp up and down quickly to balance variable renewables. They emit roughly half the CO₂ per MWh of coal and far less of other pollutants, but they still release upstream methane during fuel extraction.

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