GHG Summary Report

CO2 equivalent emissions from facility subparts C-II, SS, and TT (metric tons):2,938,984.7
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:2016-01-01
GHG Report End Date:2016-12-31
Description of Changes to Calculation Methodology:
Plant Code Indicator:Y
Primary NAICS Code:221112
Second Primary NAICS Code:

Parent Company Details:

Parent Company Name:DYNEGY INC
Address:601 Travis Street, Suite 1400, Houston, TX 77002
Percent Ownership Interest:100

Subpart C: General Stationary Fuel Combustion

Gas Information Details

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

Gas Name	Methane
Gas Quantity	0.1 (Metric Tons)
Own Result?

Gas Name	Nitrous Oxide
Gas Quantity	0.01 (Metric Tons)
Own Result?

Gas Name	Carbon Dioxide
Gas Quantity	5,226.6 (Metric Tons)
Own Result?

Unit Details:

Unit Name : CP-1
Unit Type : OCS (Other combustion source)
Unit Description :
Other Unit Name :

Common Pipe Details:
Use Ivt Indicator: N
Maximum Rated Heat Input Capacity: 0.35
Cumulative Maximum Rated Heat Input Capacity:

Emission Details:
Annual Biogenic CO2 Emissions: 0 (metric tons)
Annual Fossil fuel based CO2 Emissions: 22.2 (metric tons)

Tier Fuel Details:

Fuel : Natural Gas (Weighted U.S. Average)
Tier Name : Tier 2 (Equation C-2a)
Tier Methodology Start Date : 2016-01-01
Tier Methodology End Date : 2016-12-31
Frequency of HHV determinations : Monthly

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
22.2 (Metric Tons)	0.00 (Metric Tons)	0.000 (Metric Tons)	0 (Metric Tons)	0 (Metric Tons)

Equation C2a/C9a Inputs :
Fuel Quantity : 399616.29 (scf/year)
Use Default High Heat Value : false
Equation C2b Inputs :

	Fuel Combusted	High Heat Value
January	67040.77 (scf/month)	0.0010558 (mmBtu/scf)
February	53847.81 (scf/month)	0.0010562 (mmBtu/scf)
March	39300.31 (scf/month)	0.0010424 (mmBtu/scf)
April	32838.18 (scf/month)	0.0010508 (mmBtu/scf)
May	36118.97 (scf/month)	0.001050721 (mmBtu/scf)
June	4624.46 (scf/month)	0.0010508 (mmBtu/scf)
July	4146.4 (scf/month)	0.0010497 (mmBtu/scf)
August	4430.51 (scf/month)	0.0010469 (mmBtu/scf)
September	5413.36 (scf/month)	0.0010504 (mmBtu/scf)
October	7231.22 (scf/month)	0.001048993 (mmBtu/scf)
November	12859.33 (scf/month)	0.001038 (mmBtu/scf)
December	131764.97 (scf/month)	0.001041 (mmBtu/scf)

Unit Name : GHS-1
Unit Type : NGLH (Heater, natural gas line)
Unit Description :

Individual Unit Details:
Use Ivt Indicator: N
Maximum Rated Heat Input Capacity: 20.1 (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
5204.4 (Metric Tons)	0.10 (Metric Tons)	0.010 (Metric Tons)	2.5 (Metric Tons)	2.9 (Metric Tons)

Equation C2a/C9a Inputs :
Fuel Quantity : 93437000 (scf/year)
Use Default High Heat Value : false
Equation C2b Inputs :

	Fuel Combusted	High Heat Value
January	20584000 (scf/month)	0.0010558 (mmBtu/scf)
February	9859000 (scf/month)	0.0010562 (mmBtu/scf)
March	9749000 (scf/month)	0.0010424 (mmBtu/scf)
April	7189000 (scf/month)	0.0010508 (mmBtu/scf)
May	3781000 (scf/month)	0.001050721 (mmBtu/scf)
June	6141000 (scf/month)	0.0010508 (mmBtu/scf)
July	6620000 (scf/month)	0.0010497 (mmBtu/scf)
August	6530000 (scf/month)	0.0010469 (mmBtu/scf)
September	5864000 (scf/month)	0.0010504 (mmBtu/scf)
October	5896000 (scf/month)	0.001048993 (mmBtu/scf)
November	5406000 (scf/month)	0.001038 (mmBtu/scf)
December	5818000 (scf/month)	0.001041 (mmBtu/scf)

Unit Name : GP-1
Unit Type : OCS (Other combustion source)
Unit Description :
Other Unit Name :

Small Unit Aggregation Details:
Use Ivt Indicator: N
Highest Maximum Rated Heat Input Capacity: 1.75
Cumulative Maximum Rated Heat Input Capacity:

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

Tier Fuel Details:

Fuel : Natural Gas (Weighted U.S. Average)
Tier Name : Tier 1 (Equation C-1b, natural gas billing in mmBtu)
Tier Methodology Start Date : 2016-01-01
Tier Methodology End Date : 2016-12-31

Fuel Emission Details :

Total CO2 emissions	Total CH4 emissions	Total N2O emissions	Total CH4 emissions CO2e	Total N2O emissions CO2e
0 (Metric Tons)	0 (Metric Tons)	0 (Metric Tons)	0 (Metric Tons)	0 (Metric Tons)

Equation C1b/C8b Inputs :
Natural Gas Usage : 0 (mmBtu/year)

Subpart D: Electricity Generation

Gas Information Details

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

Gas Name	Methane
Gas Quantity	54.35 (Metric Tons)
Own Result?

Gas Name	Nitrous Oxide
Gas Quantity	5.435 (Metric Tons)
Own Result?

Gas Name	Carbon Dioxide
Gas Quantity	2,930,774.2 (Metric Tons)
Own Result?

Unit Details:

Unit Name : GTG-1
Unit Type : Electricity Generator
Unit Description :
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 2016-01-01
Methodology End Date: 2016-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 766186.2
Annual CO2 Emissions Including Biomass (short tons): 844567.1
Annual CO2 Emissions from Biomass (metric tons): 0

Appendix G Equation G4:
Operating Hours Fuel Flow Rate: 5
Operating Hours HHV Substitution: 0

Electricity Fuel Details:

Fuel type: Natural Gas (Weighted U.S. Average)
Annual heat input: 14211469.6 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 355.3 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 423.5 (Metric Tons)

Unit Name : GTG-2
Unit Type : Electricity Generator
Unit Description :
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 2016-01-01
Methodology End Date: 2016-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 747971.6
Annual CO2 Emissions Including Biomass (short tons): 824489.1
Annual CO2 Emissions from Biomass (metric tons): 0

Appendix G Equation G4:
Operating Hours Fuel Flow Rate: 3
Operating Hours HHV Substitution: 0

Electricity Fuel Details:

Fuel type: Natural Gas (Weighted U.S. Average)
Annual heat input: 13873628.96 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 346.8 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 413.4 (Metric Tons)

Unit Name : GTG-3
Unit Type : Electricity Generator
Unit Description :
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 2016-01-01
Methodology End Date: 2016-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 748410
Annual CO2 Emissions Including Biomass (short tons): 824972.3
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: 13881824.35 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 347.0 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 413.7 (Metric Tons)

Unit Name : GTG-4
Unit Type : Electricity Generator
Unit Description :
Part 75 Methodology : Appendix G, Equation G-4
Methodology Start Date: 2016-01-01
Methodology End Date: 2016-12-31
Acid Rain Program Indicator: Y

Emission Details:
Annual CO2 Emissions Including Biomass (metric tons): 668206.4
Annual CO2 Emissions Including Biomass (short tons): 736563.9
Annual CO2 Emissions from Biomass (metric tons): 0

Appendix G Equation G4:
Operating Hours Fuel Flow Rate: 2
Operating Hours HHV Substitution: 0

Electricity Fuel Details:

Fuel type: Natural Gas (Weighted U.S. Average)
Annual heat input: 12394173.3 (mmBtu)
CH₄ Emissions CO₂ Equivalent: 309.9 (Metric Tons)
N₂O Emissions CO₂ Equivalent: 369.3 (Metric Tons)