Subpart NN Local Distribution Companies (LDCs)
Note: The Cal e-GGRT help system includes general instruction on using the California GHG reporting tool. However, the help system may not explain differences between California and U.S. EPA reporting requirements. Please refer to the ARB reporting website for California-specific reporting requirements and additional help.

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Step 1 - Equation NN-1 Summary and Results

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Find the table titled "GHG SUMMARY" and click OPEN.

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From the Equation NN-6 Summary page, click NEXT.

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Cal e-GGRT will guide you to the Equation NN-1 overview page where you can use the radio buttons to indicate the source of reported GHG quantities associated with natural gas received at city gate stations. You can either use the calculated result, or choose to enter your own result.

If you elect to enter your own result, enter the quantity of CO2 associated with the natural gas received at city gate stations (in metric tons of CO2) in the space provided, then click NEXT. If you choose to use Cal eGGRT to calculate the result for you, simply click NEXT without entering a value.

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In the spaces provided, enter the:

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When finished, click NEXT.

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Use the radio buttons to indicate your source for the CO2 emissions factor.

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Step 2 - Equation NN-3 Summary and Results

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On the Subpart NN Equation NN-3 overview page, use the radio buttons to indicate the source of reported CO2 quantities from product delivered to downstream transmission pipelines or other LDCs in quantities less than 460,000 thousand scf per year.

If you elect to enter your own result, enter the total CO2 quantity from natural gas delivered to downstream transmission pipelines or other LDCs (metric tons) in the space provided then click NEXT. If you choose to use Cal eGGRT to calculate the result for you, simply click NEXT without entering a value.

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In the spaces provided, enter the:

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When finished, click NEXT.

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Use the radio buttons to indicate your source for the CO2 emissions factor.

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Step 3 - Equation NN-4 Summary and Results

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On the Subpart NN NN-4 Annual Volume of NG Received by End-Users page, use the radio buttons to indicate the source of reported GHG quantities from natural gas received by end-users that receive a supply greater than or equal to 460,000 thousand standard cubic feet per year.

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* Note that you should report the customer's customer’s physical address, if the physical address is known. Should a facility you deliver gas to not have a physical address, the facility's mailing address may be used.

** Note that LDCs are only required to report this information if known. The EIA identification number referenced here is a number assigned to electric power plants who report on EIA Form EIA-923 (Power Plant Operations Report). Each facility who reports on this form is assigned a "Plant ID" “Plant ID” number by EIA, which is a unique number for each power generating facility. This identification number is from 1 to 5 digits in length and can be found in the files under "Downloads" “Downloads” located at: http://www.eia.gov/cneaf/electricity/page/eia906_920.html. Reporting of this identification number is not required.

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For each meter, enter the requested data. When finished, click SAVE.

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Step 4 - Equation NN-5 Summary and Results

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On the Subpart NN Equation NN-5 overview page, use the radio buttons to indicate the source of reported CO2 quantities from the net product that is liquefied and/or stored/removed from storage and received from local production by the LDC within the reporting year.

If you elect to enter your own result, enter your CO2 quantity from the net product that is liquefied and/or stored/removed from storage and received from local production by the LDC within the reporting year (in metric tons) in the space provided then click NEXT. If you choose to use eGGRT to calculate the result for you, simply click NEXT without entering a value.

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In the spaces provided, enter the:

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When finished, click NEXT.

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Enter the following information in the spaces provided:

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When finished, click NEXT.

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Use the radio buttons to indicate your source for the CO2 emissions factor.

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Note that the value for CO2l may either be positive or negative depending on whether more natural gas was withdrawn from storage/received from local production or placed into storage during the reporting year.

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When you are satisfied that all entered data is correct, click FINISHED.

Step 6 - Additional Information Required for LDCs

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

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Starting on the Subpart NN Overview page, find the NATURAL GAS VOLUMES BY END USE CATEGORY (MSCF) table and click OPEN

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Enter the total annual volume (in thousand standard cubic feet) of Natural Gas delivered to residential, commercial and industrial consumers as well as electricity generating facilities

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This web site is maintained by a contractor to the California Air Resources Board (RY2015.R.03)