California Air Resources Board

In 2009, the Board directed staff to prepare guidelines to assist regulated parties in determining carbon intensity values for crude oil used in California. Staff organized several workgroup meetings in 2010 and 2011 and adopted the Oil Production Greenhouse Gas Emission Estimator (OPGEE) Model in 2012. The OPGEE model was updated as part of the 2015 LCFS re-adoption and the 2018 LCFS amendments.

Proposed Version: OPGEE Model and Supporting Information (released February 21, 2023)

• OPGEE Version 3.0b
• OPGEE User Guide and Technical Documentation (OPGEE 3.0b)
• MCON Inputs Spreadsheet for 2010 Baseline Crudes (OPGEE 3.0b)
• MCON Inputs Spreadsheet for Crude Lookup Table (OPGEE 3.0b)

Current Version: OPGEE Model and Supporting Information

• OPGEE Version 2.0
• OPGEE User Guide and Technical Documentation (OPGEE 2.0)
• MCON Inputs Spreadsheet for 2010 Baseline Crudes (OPGEE 2.0)
• MCON Inputs Spreadsheet for Crude Lookup Table (OPGEE 2.0)

Final California Crude Average Carbon Intensity Values (Public Comments)

• 2022 Crude Carbon Intensity Value
• 2021 Crude Carbon Intensity Value
• 2020 Crude Carbon Intensity Value
• 2019 Crude Carbon Intensity Value
• 2018 Crude Carbon Intensity Value
• 2017 Crude Carbon Intensity Value
• 2016 Crude Carbon Intensity Value
• 2015 Crude Carbon Intensity Value
• 2014 Crude Carbon Intensity Value
• 2013 Crude Carbon Intensity Value
• 2012 Crude Carbon Intensity Value

Previous Versions: OPGEE Model and Supporting Information

• OPGEE Version 1.1E
  • OPGEE User Guide and Technical Documentation
  • MCON Inputs Spreadsheet for 2010 Baseline Crudes
  • MCON Inputs Spreadsheet for Crude Lookup Table
• OPGEE Version 1.0
  • OPGEE Model Supporting Materials Version 1.0