NSPS for Greenhouse Gas Emissions for New Electric Utility Generating Units

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ECMPS Emissions Reporting Instructions

2.9 NSPS Subpart TTTT Compliance Reports

2.9 NSPS Subpart TTTT Compliance Reports
NSPS Subpart TTTT Compliance Reports Overview
If your EGU is subject to the NSPS Greenhouse Gas Rule (40 CFR 60 Subpart TTTT), you must
begin submitting quarterly compliance reports, if applicable, after you have accumulated 12
operating months of CO2 emissions data. The initial quarterly report must include the twelfth
operating month in the first 12-operating month compliance period.
Each quarterly compliance report must include the applicable information in this section, 2.9.
Note that the annual potential and actual energy output and electrical output values are reported
only in the report for the fourth calendar quarter.
If any month in the calendar quarter is the twelfth operating month in a compliance period, you
must also report the applicable information in section 2.9.1 of these instructions for that
compliance period.
In the fourth calendar quarter of each year in which you submit quarterly compliance reports,
you must also report the applicable information in section 2.9.2 of these instructions.
If your EGU is not subject to the NSPS Greenhouse Gas Rule, do not report any of the data
elements in sections 2.9, 2.9.1, or 2.9.2 in your quarterly emissions file.
NSPS Summary Data XML Model
Figure 22: NSPS4T Summary Data XML Elements

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2.9 NSPS Subpart TTTT Compliance Reports

NSPS4T Summary Data XML Elements
CO2 Emissions Standard Code (CO2StandardCode)
Report the code from Table 48, below, which corresponds with the emissions standard from
Table 1 or Table 2 of subpart TTTT with which the EGU must comply.
Table 48: CO2 Emissions Standard Codes

Code
NEW640

Description
Newly constructed steam generating unit or integrated gasification combined cycle (IGCC)
following the standard in Table 1 of Subpart TTTT:
640 kg CO2/MWh of gross energy output

RCON910

Reconstructed steam generating unit or IGCC that has base load rating of 2,000 MMBtu/h or less
following the standard in Table 1 of Subpart TTTT:
910 kg of CO2 per MWh of gross energy output

RCON820

Reconstructed steam generating unit or IGCC that has a base load rating greater than 2,000
MMBtu/h following the standard in Table 1 of Subpart TTTT:
820 kg of CO2 per MWh of gross energy output
A modified steam generating unit or IGCC using a unit-specific standard that must be:

MODUS

≥ 820 kg of CO2/MWh gross, for units with a base load > 2,000 mmBtu/hr or
≥ 910 kg of CO2/ MWh gross, for units with a base load ≤ 2,000 mmBtu/hr

CTOUT

Newly constructed or reconstructed stationary combustion turbine that supplies more than its design
efficiency or 50 percent, whichever is less, times its potential electric output as net-electric sales on
both a 12-operating month and a 3-year rolling average basis, and combusts more than 90% natural
gas on a heat input basis on a 12-operating-month rolling average basis following the standard in
Table 2 of Subpart TTTT:
450 kg of CO2 per MWh of gross energy output

CTOLB

Newly constructed or reconstructed stationary combustion turbine that supplies more than its design
efficiency or 50 percent, whichever is less, times its potential electric output as net-electric sales on
both a 12-operating month and a 3-year rolling average basis, and combusts more than 90% natural
gas on a heat input basis on a 12-operating-month rolling average basis following the standard in
Table 2 of Subpart TTTT:
l,000 lb of CO2 per MWh of gross energy output

CTOUTNT

Newly constructed or reconstructed stationary combustion turbine that supplies more than its design
efficiency or 50 percent, whichever is less, times its potential electric output as net-electric sales on
both a 12-operating month and a 3-year rolling average basis, and combusts more than 90% natural
gas on a heat input basis on a 12-operating-month rolling average basis following the standard in
Table 2 of Subpart TTTT:
470 kg of CO2 per MWh of net energy output

CTOLBNT

Newly constructed or reconstructed stationary combustion turbine that supplies more than its design
efficiency or 50 percent, whichever is less, times its potential electric output as net-electric sales on
both a 12-operating month and a 3-year rolling average basis, and combusts more than 90% natural
gas on a heat input basis on a 12-operating-month rolling average basis following the standard in
Table 2 of Subpart TTTT:
1,030 lb of CO2 per MWh of net energy output

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ECMPS Emissions Reporting Instructions

Code

CTHING

2.9 NSPS Subpart TTTT Compliance Reports

Description
Newly constructed or reconstructed stationary combustion turbine that supplies its design efficiency
or 50 percent, whichever is less, times its potential electric output or less as net-electric sales on
either a 12-operating month or a 3-year rolling average basis, and combusts more than 90% natural
gas on a heat input basis on a 12-operating-month rolling average basis following the standard in
Table 2 of Subpart TTTT:
120 lb CO2 /mmBtu

CTHIMF

Newly constructed and reconstructed stationary combustion turbine that combusts 90% or less
natural gas on a heat input basis on a 12-operating-month rolling average basis, as determined by
the procedures in §60.5525 following the standard in Table 2 of Subpart TTTT:
120 lb CO2/MMBtu) to 160 lb CO2/MMBtu

MODUS Value (MODUSValue)
If the EGU is complying with a unit-specific CO2 emission standard, report the numeric value of
the standard. For all other CO2 emission standards, leave this field blank.
MODUS Units of Measure Code (MODUSUOMCode)
Report the units of measure from Table 49, below, which correspond to the unit-specific CO2
emission standard.
Table 49: CO2M Emission Rate Units of Measure Code

Code

Description

KGMWH
LBMMBTU
LBMWH

kg/MWh
lb/MMBTU
lb/MWh

Electrical Load Code (ElectricalLoadCode)
Report a code of either “GROSS” or “NET” to indicate if the energy output values used in
compliance determination are based solely upon gross or net electrical load.
No Compliance Period Ended Indicator (NoCompliancePeriodEndedIndicator)
Indicate if a compliance period ended in the quarter for which the report is being prepared. Use a
“1” for yes and “0” for no.
No Compliance Period Ended Comment (NoCompliancePeriodEndedComment)
If there are no compliance periods that end in the quarter for which the report is prepared,
include a statement to that effect.

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2.9.1 NSPS Subpart TTTT Fourth Quarter Data

2.9.1 NSPS4T Compliance Period Data
NSPS4T Compliance Period Data Overview
You must report data in the “Compliance Period End” field in each quarterly report. Then, if any
month in the calendar quarter is the twelfth operating month in a 12- operating month
compliance period, you must report the applicable data elements in this section, 2.9.1, for that
compliance period. Do not report these elements if your EGU is not subject to this subpart.
NSPS4T Compliance Period Data XML Model
Figure 23: NSPS4T Compliance Period Data XML Elements

NSPS4T Compliance Period Data XML Elements
Begin Year(BeginYear)
Report the year (20xx) in which the first operating month in the compliance period occurred.
Begin Month (BeginMonth)
Report the first operating month in the compliance period for which you performed a CO2 mass
emissions rate calculation as a numerical value 1-12.
End Year (EndYear)
Report the year (20xx) in which the twelfth operating month in the compliance period occurred.
End Month (EndMonth)
Report the twelfth operating month in the compliance period for which a CO2 mass emission
rate was calculated as a numerical value 1-12.
Average CO2 Emission Rate (AverageCO2EmissionRate)
Report the average CO2 mass emissions rate for the compliance period.
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2.9.1 NSPS Subpart TTTT Fourth Quarter Data

CO2 Emission Rate Units of Measure Code (CO2EmissionRateUOMCode)
Indicate the units of measure of the average CO2 emission rate using the appropriate code from
Table 49.
Percent Valid Operating Hours (PercentValidOpHours)
Report the percentage of valid operating hours in each 12-month compliance period. If more than
one compliance period ends in the quarter, report one PercentValidOpHours for each compliance
period.
Violation of CO2 Standard (ViolationofCO2StandardIndicator)
Indicate whether or not the EGU violated the applicable CO2 emission standard in the
compliance period. Report “1” if a violation did occur and “0” if no violation of the standard
occurred.
Violation of CO2 Standard Comment (ViolationofCO2StandardComment)
If one or more compliance periods ends in the quarter and there are no violations of the CO2
emissions standard that occurred for the affected EGU, include a statement indicating this.

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2.9.2 NSPS Subpart TTTT Fourth Quarter Data

2.9.2 NSPS4T Fourth Quarter Data
In the report for the fourth calendar quarter of the year, you must include certain data elements
not required in other calendar quarters. Do not report these elements if your EGU is not subject
to this subpart.
NSPS4T Fourth Quarter Data XML Model
Figure 24: NSPS4T Fourth Quarter Data XML Elements

NSPS4T Fourth Quarter Data XML Elements
Annual Energy Sold (AnnualEnergySold)
In the report for the fourth quarter, report the amount of output sold over the four quarters of the
calendar year. Leave this field blank if the report is for any other quarter.
Annual Energy Sold Type Code (AnnualEnergySoldTypeCode)
Report a code of either “GROSS” or “NET” to indicate if the annual energy sold to the grid was
in terms of gross or net energy for the unit. Leave this field blank if the report is for any other
quarter.
Annual Potential Electric Output (AnnualPotentialElectricOutput)
In the report for the fourth calendar quarter of each year, report the potential annual electric
output of the EGU in the report, in units of megawatt hours (MWh). Leave this field blank for all
other quarterly reports.

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