GHG Summary Report

CO2 equivalent emissions from facility subparts C-II, SS, and TT (metric tons):165,780.6
CO2 equivalent emissions from supplier subparts LL-QQ (metric tons):
Biogenic CO2 emissions from facility subparts C-II, SS, and TT (metric tons):0
Cogeneration Unit Emissions Indicator:N
GHG Report Start Date:2023-01-01
GHG Report End Date:2023-12-31
Description of Changes to Calculation Methodology:
Plant Code Indicator:Y
Primary NAICS Code:221112
Second Primary NAICS Code:

Parent Company Details:

Parent Company Name:DOMINION ENERGY INC
Address:120 Tredegar St, Richmond, VA 23219
Percent Ownership Interest:100

Subpart C: General Stationary Fuel Combustion

Gas Information Details

Gas Name	Carbon Dioxide
Gas Quantity	19.8 (Metric Tons)
Own Result?

Gas Name	Biogenic Carbon dioxide
Gas Quantity	0 (Metric Tons)
Own Result?

Gas Name	Methane
Gas Quantity	0 (Metric Tons)
Own Result?

Gas Name	Nitrous Oxide
Gas Quantity	0 (Metric Tons)
Own Result?

Unit Details:

Unit Name : PH1
Unit Type : PRH (Process Heater)
Unit Description :

Individual Unit Details:
Use Ivt Indicator: N
Maximum Rated Heat Input Capacity: 5.21 (mmBtu/hr)

Emission Details:
Annual CO₂ mass emissions from sorbent: 0 (Metric Tons)
Annual Biogenic CO2 Emissions: 0 (metric tons)

Tier Fuel Details:

Fuel : Natural Gas (Weighted U.S. Average)
Tier Name : Tier 1 (Equation C-1)
Tier Methodology Start Date : 2023-01-01
Tier Methodology End Date : 2023-12-31

Fuel Emission Details :

Total CO2 emissions	Total CH4 emissions	Total N2O emissions	Total CH4 emissions CO2e	Total N2O emissions CO2e
10.6 (Metric Tons)	0.00 (Metric Tons)	0.000 (Metric Tons)	0 (Metric Tons)	0 (Metric Tons)

Equation C1/C8 Inputs :
Fuel Quantity : 195600 (scf/year)

Unit Name : PH-2
Unit Type : PRH (Process Heater)
Unit Description :

Individual Unit Details:
Use Ivt Indicator: N
Maximum Rated Heat Input Capacity: 5.21 (mmBtu/hr)

Emission Details:
Annual CO₂ mass emissions from sorbent: 0 (Metric Tons)
Annual Biogenic CO2 Emissions: 0 (metric tons)

Tier Fuel Details:

Total CO2 emissions	Total CH4 emissions	Total N2O emissions	Total CH4 emissions CO2e	Total N2O emissions CO2e
9.2 (Metric Tons)	0.00 (Metric Tons)	0.000 (Metric Tons)	0 (Metric Tons)	0 (Metric Tons)

Equation C1/C8 Inputs :
Fuel Quantity : 169600 (scf/year)

Subpart D: Electricity Generation

Gas Information Details

Gas Name	Carbon Dioxide
Gas Quantity	165,580 (Metric Tons)
Own Result?

Gas Name	Biogenic Carbon dioxide
Gas Quantity	0 (Metric Tons)
Own Result?

Gas Name	Methane
Gas Quantity	3.19 (Metric Tons)
Own Result?

Gas Name	Nitrous Oxide
Gas Quantity	0.339 (Metric Tons)
Own Result?

Unit Details:

Unit Name : 4
Unit Type : Electricity Generator
Unit Description :
Plant Code : 7838 (numeric, maximum of 6 digits)
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 2000-07-10
Methodology End Date: 2023-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 65422.9
Annual CO2 Emissions Including Biomass (short tons): 72115.7
Annual CO2 Emissions from Biomass (metric tons): 0

Appendix G Equation G4:
Operating Hours Fuel Flow Rate: 0
Operating Hours HHV Substitution: 0

Electricity Fuel Details:

Fuel type: Natural Gas (Weighted U.S. Average)
Annual heat input: 1150773 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 28.8 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 34.3 (Metric Tons)

Fuel type: Distillate Fuel Oil No. 2
Annual heat input: 45942 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 3.4 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 8.2 (Metric Tons)

Unit Name : 1
Unit Type : Electricity Generator
Unit Description :
Plant Code : 7838 (numeric, maximum of 6 digits)
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 2000-07-09
Methodology End Date: 2023-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 60597
Annual CO2 Emissions Including Biomass (short tons): 66796.1
Annual CO2 Emissions from Biomass (metric tons): 0

Appendix G Equation G4:
Operating Hours Fuel Flow Rate: 1
Operating Hours HHV Substitution: 0

Electricity Fuel Details:

Fuel type: Natural Gas (Weighted U.S. Average)
Annual heat input: 1121512 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 28.0 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 33.4 (Metric Tons)

Fuel type: Distillate Fuel Oil No. 2
Annual heat input: 1774 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0.1 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 0.3 (Metric Tons)

Unit Name : 2
Unit Type : Electricity Generator
Unit Description :
Plant Code : 7838 (numeric, maximum of 6 digits)
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 2000-07-10
Methodology End Date: 2023-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 4953.5
Annual CO2 Emissions Including Biomass (short tons): 5460.2
Annual CO2 Emissions from Biomass (metric tons): 0

Appendix G Equation G4:
Operating Hours Fuel Flow Rate: 0
Operating Hours HHV Substitution: 0

Electricity Fuel Details:

Fuel type: Natural Gas (Weighted U.S. Average)
Annual heat input: 78738 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 2.0 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 2.3 (Metric Tons)

Fuel type: Distillate Fuel Oil No. 2
Annual heat input: 9622 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0.7 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 1.7 (Metric Tons)

Unit Name : 3
Unit Type : Electricity Generator
Unit Description :
Plant Code : 7838 (numeric, maximum of 6 digits)
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 2000-07-05
Methodology End Date: 2023-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 34606.6
Annual CO2 Emissions Including Biomass (short tons): 38146.9
Annual CO2 Emissions from Biomass (metric tons): 0

Appendix G Equation G4:
Operating Hours Fuel Flow Rate: 0
Operating Hours HHV Substitution: 0

Electricity Fuel Details:

Fuel type: Natural Gas (Weighted U.S. Average)
Annual heat input: 629232 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 15.7 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 18.8 (Metric Tons)

Fuel type: Distillate Fuel Oil No. 2
Annual heat input: 9279 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0.7 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 1.7 (Metric Tons)