GHG Summary Report

CO2 equivalent emissions from facility subparts C-II, SS, and TT (metric tons):818,018.2
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:GENON ENERGY INC
Address:1360 Post oak Blvd. Suite 2000, Houston, TX 77056
Percent Ownership Interest:100

Subpart C: General Stationary Fuel Combustion

Gas Information Details

Gas Name	Carbon Dioxide
Gas Quantity	20.1 (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 : Emerg Gen 1 (Units 1-2)
Unit Type : OCS (Other combustion source)
Unit Description :
Other Unit Name : Diesel Engine

Individual Unit Details:
Use Ivt Indicator: Y
Maximum Rated Heat Input Capacity: 1.51 (mmBtu/hr)

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

Tier Fuel Details:

Fuel : Distillate Fuel Oil No. 2
Tier Name : Tier 2 (Equation C-2a)
Tier Methodology Start Date : 2020-01-01
Tier Methodology End Date : 2020-12-31
Frequency of HHV determinations : Semiannually

Tier 2 Monthly HHV Details :

January	February	March	April	May	June	July	August	September	October	November	December
N	N	N	N	N	N	N	N	N	N	N	N

Fuel Emission Details :

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

Unit Name : Startup Generator 6
Unit Type : OCS (Other combustion source)
Unit Description :
Other Unit Name : Diesel Engine

Individual Unit Details:
Use Ivt Indicator: Y
Maximum Rated Heat Input Capacity: 19.18 (mmBtu/hr)

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

Tier Fuel Details:

January	February	March	April	May	June	July	August	September	October	November	December
N	N	N	N	N	N	N	N	N	N	N	N

Fuel Emission Details :

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

Unit Name : Startup Generator 7
Unit Type : OCS (Other combustion source)
Unit Description :
Other Unit Name : Diesel Engine

Individual Unit Details:
Use Ivt Indicator: Y
Maximum Rated Heat Input Capacity: 19.19 (mmBtu/hr)

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

Tier Fuel Details:

January	February	March	April	May	June	July	August	September	October	November	December
N	N	N	N	N	N	N	N	N	N	N	N

Fuel Emission Details :

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

Unit Name : Startup Generator 5
Unit Type : OCS (Other combustion source)
Unit Description :
Other Unit Name : Diesel Engine

Individual Unit Details:
Use Ivt Indicator: Y
Maximum Rated Heat Input Capacity: 19.18 (mmBtu/hr)

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

Tier Fuel Details:

January	February	March	April	May	June	July	August	September	October	November	December
N	N	N	N	N	N	N	N	N	N	N	N

Fuel Emission Details :

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

Unit Name : Emerg Gen 2 (Units 3-4)
Unit Type : OCS (Other combustion source)
Unit Description :
Other Unit Name : Diesel Engine

Individual Unit Details:
Use Ivt Indicator: Y
Maximum Rated Heat Input Capacity: 2.26 (mmBtu/hr)

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

Tier Fuel Details:

January	February	March	April	May	June	July	August	September	October	November	December
N	N	N	N	N	N	N	N	N	N	N	N

Fuel Emission Details :

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

Subpart D: Electricity Generation

Gas Information Details

Gas Name	Carbon Dioxide
Gas Quantity	817,167.9 (Metric Tons)
Own Result?

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

Gas Name	Methane
Gas Quantity	15.15 (Metric Tons)
Own Result?

Gas Name	Nitrous Oxide
Gas Quantity	1.515 (Metric Tons)
Own Result?

Unit Details:

Unit Name : 4
Unit Type : Electricity Generator
Unit Description :
Plant Code : 3131 (numeric, maximum of 6 digits)
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 2017-07-01
Methodology End Date: 2020-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 268417.4
Annual CO2 Emissions Including Biomass (short tons): 295876.5
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: Bituminous
Annual heat input: 0 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 0 (Metric Tons)

Fuel type: Natural Gas (Weighted U.S. Average)
Annual heat input: 4977988.958 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 124.4 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 148.3 (Metric Tons)

Fuel type: Distillate Fuel Oil No. 2
Annual heat input: 649 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0.0 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 0.1 (Metric Tons)

Unit Name : 3
Unit Type : Electricity Generator
Unit Description :
Plant Code : 3131 (numeric, maximum of 6 digits)
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 2017-07-01
Methodology End Date: 2020-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 292893
Annual CO2 Emissions Including Biomass (short tons): 322856
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: Bituminous
Annual heat input: 0 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 0 (Metric Tons)

Fuel type: Natural Gas (Weighted U.S. Average)
Annual heat input: 5431902 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 135.8 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 161.9 (Metric Tons)

Fuel type: Distillate Fuel Oil No. 2
Annual heat input: 748 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0.1 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 0.1 (Metric Tons)

Unit Name : 1
Unit Type : Electricity Generator
Unit Description :
Plant Code : 3131 (numeric, maximum of 6 digits)
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 2017-07-01
Methodology End Date: 2020-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 133717.3
Annual CO2 Emissions Including Biomass (short tons): 147396.6
Annual CO2 Emissions from Biomass (metric tons): 0

Appendix G Equation G4:
Operating Hours Fuel Flow Rate: 7
Operating Hours HHV Substitution: 0

Electricity Fuel Details:

Fuel type: Bituminous
Annual heat input: 0 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 0 (Metric Tons)

Fuel type: Natural Gas (Weighted U.S. Average)
Annual heat input: 2479677 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 62.0 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 73.9 (Metric Tons)

Fuel type: Distillate Fuel Oil No. 2
Annual heat input: 530 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0.0 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 0.1 (Metric Tons)

Unit Name : 2
Unit Type : Electricity Generator
Unit Description :
Plant Code : 3131 (numeric, maximum of 6 digits)
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 2017-07-01
Methodology End Date: 2020-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 122140.2
Annual CO2 Emissions Including Biomass (short tons): 134635.2
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: Bituminous
Annual heat input: 0 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 0 (Metric Tons)

Fuel type: Natural Gas (Weighted U.S. Average)
Annual heat input: 2264921 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 56.6 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 67.5 (Metric Tons)

Fuel type: Distillate Fuel Oil No. 2
Annual heat input: 575 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 0.0 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 0.1 (Metric Tons)