GHG Summary Report

CO2 equivalent emissions from facility subparts C-II, SS, and TT (metric tons):2,315,074.8
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:2020-01-01
GHG Report End Date:2020-12-31
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	468,212.8 (Metric Tons)
Own Result?

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

Gas Name	Methane
Gas Quantity	8.57 (Metric Tons)
Own Result?

Gas Name	Nitrous Oxide
Gas Quantity	0.858 (Metric Tons)
Own Result?

Unit Details:

Unit Name : 7
Unit Type : OCS (Other combustion source)
Unit Description :
Other Unit Name :

Emission Details:
Annual Biogenic CO2 Emissions: 0 (metric tons)

Annual CO2 emission measured by CEMS or Other Part75 Methodology : 468211.8
Tier Methodology Start Date : 2020-01-01
Tier Methodology End Date : 2020-12-31
Part75 Heat Input Method : Appendix D
Part 75 CO2 Methodology : Appendix D and G calculation method--- § 98.33(a)(5)(i)

Appendix D and G calculation method :
Source operating hours in the reporting year that fuel flow rate was missing : 0
Source operating hours in the reporting year that high heating value was missing : 0

Tier Fuel Details:

Fuel : Natural Gas (Weighted U.S. Average)

Fuel Emission Details :

Fuel type: Natural Gas (Weighted U.S. Average)
Annual heat input: 8573104.718 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 214.3 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 255.4 (Metric Tons)

Fuel : Distillate Fuel Oil No. 2

Fuel Emission Details :

Fuel type: Distillate Fuel Oil No. 2
Annual heat input: 1270.83792 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 0.3 (Metric Tons)

Unit Name : IS-4
Unit Type : NGLH (Heater, natural gas line)
Unit Description :

Individual Unit Details:
Use Ivt Indicator: N
Maximum Rated Heat Input Capacity: 4.25 (mmBtu/hr)

Emission Details:
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 : 2020-01-01
Tier Methodology End Date : 2020-12-31

Fuel Emission Details :

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

Equation C1/C8 Inputs :
Fuel Quantity : 18230 (scf/year)

Subpart D: Electricity Generation

Gas Information Details

Gas Name	Carbon Dioxide
Gas Quantity	1,833,228.6 (Metric Tons)
Own Result?

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

Gas Name	Methane
Gas Quantity	193.34 (Metric Tons)
Own Result?

Gas Name	Nitrous Oxide
Gas Quantity	27.953 (Metric Tons)
Own Result?

Unit Details:

Unit Name : 5
Unit Type : Electricity Generator
Unit Description :
Plant Code : 3797 (numeric, maximum of 6 digits)
Part 75 Methodology : CEMS
Methodology Start Date: 2019-04-01
Methodology End Date: 2020-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 591093
Annual CO2 Emissions Including Biomass (short tons): 651561.8
Annual CO2 Emissions from Biomass (metric tons): 0

CEMS Details:
Operating Hours CO2 Concentration Substituted: 5
Operating Hours Stack Gas Flow Rate Substituted: 1
Operating Hours Stack Gas Moisture Substituted:

Electricity Fuel Details:

Fuel type: Bituminous
Annual heat input: 6567534.973 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 1806.1 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 3131.4 (Metric Tons)

Fuel type: Distillate Fuel Oil No. 2
Annual heat input: 96688.05623 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 7.3 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 17.3 (Metric Tons)

Unit Name : **8A
Unit Type : Electricity Generator
Unit Description :
Plant Code : 3797 (numeric, maximum of 6 digits)
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 1995-10-01
Methodology End Date: 2020-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 267117.7
Annual CO2 Emissions Including Biomass (short tons): 294443.9
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: 4947638.287 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 123.7 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 147.4 (Metric Tons)

Fuel type: Distillate Fuel Oil No. 2
Annual heat input: 913.039776 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0.1 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 0.2 (Metric Tons)

Unit Name : 6
Unit Type : Electricity Generator
Unit Description :
Plant Code : 3797 (numeric, maximum of 6 digits)
Part 75 Methodology : CEMS
Methodology Start Date: 1995-01-01
Methodology End Date: 2020-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 975017.9
Annual CO2 Emissions Including Biomass (short tons): 1074762.3
Annual CO2 Emissions from Biomass (metric tons): 0

CEMS Details:
Operating Hours CO2 Concentration Substituted: 7
Operating Hours Stack Gas Flow Rate Substituted: 9
Operating Hours Stack Gas Moisture Substituted:

Electricity Fuel Details:

Fuel type: Bituminous
Annual heat input: 10468307.37 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 2878.8 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 4991.3 (Metric Tons)

Fuel type: Distillate Fuel Oil No. 2
Annual heat input: 237289.3706 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 17.8 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 42.4 (Metric Tons)