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This page provides an overview of subtopics that are central to Subpart NN reporting:

• #Summary Summary Information for this Supplier
• #Miscellaneous Miscellaneous Information
• #LDC LDC GHG Information #Fractionator Fractionator GHG Information
• #Validation Validation Report

The end of the page contains links you can use for more information on these topics

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Summary Information for this Supplier

Subpart NN requires you to reporters must report the following data about your facility or company:

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miscellaneous information and GHG data annually by entering the data into e-GGRT

First time reporters must select the appropriate supplier type (LDC or NGL Fractionator)

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Miscellaneous Information

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LDCs must report the following data:

• The name of the U.S. state or territory covered in the report.
• The total annual volume (in thousand standard cubic feet) of Natural Gas delivered to each of the following end-user categories:
  • Residential consumers
  • Commercial consumers
  • Industrial consumers
  • Electricity generating facilities

When

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reporting the quantity of gas delivered to each of the 4 end-use categories, make sure to include the following:

• Natural
Gas
• gas delivered and owned by your LDC.
• Natural
Gas
• gas delivered to end-users by your LDC that IS NOT OWNED by your LDC.
• Any deliveries to
facilities
• large end-users whom receive greater than 460,000 mscf of natural gas per year as reported in Equation NN-4.

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NGL Fractionators

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must report the following data:

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• The annual volume (in thousand standard cubic feet) of
Natural Gas
• natural gas received for processing.
• The annual quantity (in barrels) of y-grade, o-grade and other bulk NGLs received from others for fractionation .
• The annual quantity (in barrels) of
Propane
• y-grade, o-grade and other bulk NGLs supplied to downstream users that are not fractionated by your facility.
• The annual quantity (in barrels) of propane odorized at the facility and delivered to others.

LDC GHG Information

For LDCs, Subpart NN requires you to LDCs must report the following data:

• The annual CO₂ quantity (in metric tons) associated with gas delivered to all meters customers that receive less than 460,000 thousand standard cubic feet per year (excluding CO₂ associated with natural gas stored for future deliveries).
• The volume of natural gas (in thousand standard cubic feet) and The annual CO₂ quantity (in metric tons) that would result from the complete combustion or oxidation of the seven reported volumes that follow:
  • The annual volume (in thousand standard cubic feet) of natural gas received at city gate stations during the reporting year for redelivery on the LDC’s distribution system, including for use gas used by the LDC, and the specific industry standard used to measure this volume.
    
  • The annual volume (in thousand standard cubic feet) of natural gas placed into storage during the reporting year, including gas liquefied and placed into storage.
    
  • The annual volume (in thousand standard cubic feet) of natural gas that is used for deliveries in the reporting year that was not otherwise accounted for in the above reported volume This includes natural gas previously stored on-system which that is removed from storage and used for deliveries to customers, downstream pipelines or other LDCs by the LDC within the reporting year.
    
  • The annual volume (in thousand standard cubic feet) of This also includes liquefied natural gas (LNG) produced at on-system vaporization facilities for delivery on the LDC’s distribution system during the reporting year.
  • This also The annual volume (in thousand cubic feet) of natural gas that is used for deliveries in the reporting year that was not received through a city gate station during the reporting year. This includes natural gas that bypassed the city gate and was delivered directly to LDC systems from the LDC’s distribution system from local producers or natural gas processing plants from local production.
  • The annual volume (in thousand standard cubic feet) of natural gas delivered to downstream gas transmission pipelines and other LDCs during the reporting year.
  • The annual volume (in thousand standard cubic feet) of natural gas delivered to each large end-user or meter registering supply equal to or greater than 460,000 thousand standard cubic feet during the calendar year and the customer large end-user's name, address, meter number, and EIA identification number (if known).
    
• The industry standard(s) of each meter reading usedused to measure the volumes of natural gas reported.
• Developed reporter-specific emission factors (EFs) and higher heating values (HHVs) All developed EFs and HHVs and the industry standard(s) used to develop them, if you developed sitereporter-specific EFs or HHVs are used to calculate CO₂.
• The number of days in the reporting year for which substitute data procedures were used to measure a quantity , and develop reporter-specific HHVs , and develop EFs.
  
• The method used (method one or method two) for estimating Equation NN-1 or NN-2) for calculating the CO₂ quantities that would result from the complete combustion or oxidation of natural gas supplied.  

Fractionator GHG Information

For NGL Fractionators , Subpart NN requires you to must report the following data:

• Annual CO₂ CO2 quantity (in metric tons) associated with all NGLs supplied, excluding quantities associated with NGLs received from other fractionators.
• Annual CO₂ CO2 quantities (in metric tons) associated with the total quantities of NGLs supplied, reported in the following product categories:
  Ethane
  • Propane
  • Normal butane
  • Isobutane
  • Pentanes plus
• Annual CO₂ CO2 quantities (in metric tons) associated with the total quantities of NGLs that are received from other fractionators, reported in the following product categories:
  
  • Ethane
  • Propane
  • Normal butane
  • Isobutane
  • Pentanes plus

• The annual quantities (in barrels) of ethane, propane, normal butane, isobutane, and pentanes plus supplied to downstream facilities and the specific industry standard used to measure these quantities.

• The annual quantities (in barrels) of ethane, propane, normal butane, isobutane and pentanes plus received from other NGL fractionators

  .

• Developed reporter-specific

  All developed

  EFs and HHVs and the industry standard(s) used to develop them, if

  you developed site

  reporter-specific EFs or HHVs are used to calculate CO2.

• The number of days in the reporting year for which substitute data procedures were used to measure a quantity

  ,

  and develop reporter-specific HHVs

  ,

  and

  develop

  EFs.

• The method used (

  method one or method two) for estimating CO₂

  Equation NN-1 or NN-2) for calculating the CO2 quantities that would result from the complete combustion or oxidation of each NGL product supplied.

Validation Report

You can use the The Validation Report to ensure assists you with determining the completeness and quality of your reporting reported data.

You should We strongly encourage you to use the Validation Report to check your work. The Validation Report performs two types of checks:

• Data Completeness: Data that is required for reporting is that are missing or incomplete.
• Data Quality: Data is that are outside of the expected range of expected values.

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Certain validation checks which are considered to represent critical errors must be corrected before you can successfully generate and submit your Annual Report. These checks are signified with a stop sign Image Added. If you feel that you have triggered one of these checks in error, or if there’s a reason why your report should be submitted despite the check being triggered, please submit a request to the e-GGRT Help Desk at GHGReporting@epa.gov.

You may view the Validation Report at any time.

#Back Back to Top

See Also

Screen Errors
Using e-GGRT to Prepare Your Subpart NN Report
Subpart NN Summary Information for this Supplier
Subpart NN Miscellaneous Information
Subpart NN LDC GHG Information
Subpart NN Fractionator GHG Information
Subpart Validation Report

Subpart W Data populated from Subpart NN Data