Mandatory GHG Reporting - Guidance Documents
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Greenhouse Gas Reporting
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The following guidance documents are provided by CARB to assist reporters in complying with the Regulation for the Mandatory Reporting of Greenhouse Gas Emissions (MRR). These guidance materials are provided solely for informational purposes to assist reporters in meeting the requirements of MRR, and do not, and cannot create or vary any legal requirements of MRR.
General Reporting Guidance
- Cessation of Reporting - Contact CARB with specific questions.
- Change of Ownership or Operational Control Notification and Reporter Responsibilities (1/11/19)
- Aggregation of Emitting Units (2/7/2014)
- Determining Rule Applicability (2/1/2019)
- Applicability for 2016 and 2018 MRR Revisions (1/23/2020)
- Fuel versus Emissions Table - Threshold Guidance for MRR (3/5/2012)
- Fuel Suppliers - Estimating CO2 Emissions from Complete Oxidation of Fuels Supplied (3/15/2012)
- Cost of Implementation (COI) Reporting and Verification FAQs (3/6/2017) Link to Regulation
Emissions Data Reporting Guidance
- Measurement Accuracy and Missing Data Provisions (1/11/2019)
- Electricity Generating and Cogeneration Units (1/11/2019)
- Suppliers of Transportation Fuels and Natural Gas Fuels (3/23/2023)
- Biomass-Derived Fuels (1/11/19)
- Natural Gas Liquid (NGL) Fractionators (3/12/2019)
- Petroleum and Natural Gas Systems (1/23/2020)
Product Data Reporting Guidance
- Covered Product Data General Reporting and Verification (3/4/2019)
- Hydrogen Producer Reporting (3/12/2019)
- Hydrogen Transfer Purchaser/Receiver Reporting FAQ (1/11/19)
- Tomato Processing Covered Product Data (1/19/2018)
- Cement Producers Covered Product Data (2/17/2015)
- Petroleum Refineries and Coke Calciners (3/4/2019)
- Petroleum and Natural Gas Systems Covered Product Data (2/21/2019)
Electric Power Entities
- Electric Power Entities (EPEs): Resources specifically for electric power entities
Additional Reporting Assistance
- GHG Mandatory Reporting Regulation Text
- GHG Regulation Training Sessions and Materials
- Cal e-GGRT Reporting Tool and Training
For questions please contact:
- Sector Specialist Contacts List or the GHG Reporting Help Desk