California Air Resources Board

Since 1993, Health and Safety Code Sections 40709 and 40709.5 have required local air quality management districts / air pollution control districts (AQMDs / APCDs or districts) to collect information about the cost of offset transactions from stationary source owners who purchase offsets as required by district New Source Review programs. State law also requires districts to adopt emission reduction credit banking programs. Districts are required to collect specific information about offset transactions including the price paid in dollars per ton, the pollutant traded, the amount traded and the year of the transaction. Districts are also required to annually publish this information without revealing the identity of the parties involved with the transaction. Some districts are exempt from these requirements, including districts that are not required to submit a plan for attainment of state ambient air quality standards and that also meet federal air quality standards.

The California Air Resources Board (CARB) has compiled the information regarding offset transactions from all 35 districts to assemble a statewide report summarizing the emission reduction offset transactions in California from 1993 through the present. The following represents this information in a reverse chronology format.

• Emission Reduction Offsets Transaction Cost Summary report for 2018: (Does not include data from previous years.) This file contains 64 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2017: (Does not include data from previous years.) This file contains 42 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2016: (Does not include data from previous years.) This file contains 51 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2015: (Does not include data from previous years.) This file contains 48 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2014: (Does not include data from previous years.) This file contains 55 pages. 
• Emission Reduction Offsets Transaction Cost Summary Report for 2013: (Does not include data from previous years.) This file contains 49 pages. 
• Emission Reduction Offsets Transaction Cost Summary Report for 2012: (Does not include data from previous years.) This file contains 53 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2011: (Does not include data from previous years.) This file contains 61 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2010: (Does not include data from previous years.) This file contains 47 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2009: (Does not include data from previous years.) This file contains 52 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2008: (Does not include data from previous years.) This file contains 57 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2007: (Does not include data from previous years.) This file contains 65 pages. 
• Emission Reduction Offsets Transaction Cost Summary Report for 2006: (Does not include data from previous years.) This file contains 54 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2005: (Does not include data from previous years.) This file contains 44 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2004: (Does not include data from previous years.) This file contains 43 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2003: (Does not include data from previous years.) This file contains 42 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2002: (Does not include data from previous years.) Both versions contain 47 pages.
• Emission Reduction Offsets Transaction Cost Summary Report for 2001: (Appendix A includes data from 2000.)
• Emission Reduction Offsets Transaction Cost Summary Report for 2000: (Does not include data from previous years.)
• Emission Reduction Offsets Transaction Cost Summary Report for 1999: (Includes data from 1993 through 1998 in the appendices.)

If you have any questions feel free to call Kyle Rohlfing at (279) 216-0319

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