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Emission Reduction Credits

Emission Reduction Credits (ERCs) can be banked for later use as emission offsets if actual (not potential) emissions are reduced from stationary sources. ERCs resulting from the modification or shutdown of existing stationary sources are evaluated under If emission reductions meet the criteria to be certified as ERCs,  MBARD issues a certificate to the applicant/owner showing the owner’s name, the location where the emission reductions were generated, and the amount of ERCs for each criteria pollutant.

Once banked, ERCs are held by the owners and can be traded on the open market. MBARD maintains a registry of all ERC certificates that have been issued and all transactions that have taken place, but does not set the price of credits or arrange transactions between buyers and sellers of ERCs.

Rule 215 Banking of Emission Reductions


Application for ERCsFee Determination Sheet (use 'Other' section on form)

The process for obtaining ERCs begins when an applicant submits a complete application and pays the ERC registry fee. 


  • Reviews the application for completeness.
  • Performs an evaluation to determine the quantity of actual emission reductions and determine compliance with all applicable rules and regulations.
  • Makes a preliminary written decision as to whether the emission reductions should be certified as emission reduction credits.
  • Issues a 30-day preliminary public notice, including submission to EPA and ARB for comments on the application and evaluation.
  • Issues a notice of a final decision whether to approve the application.

If the application is approved, staff issues an ERC certificate to the applicant.


ERC transaction  are recorded in the Emission Reduction Credit Registry.  The files below contain the active ERCs and the Community Bank ERCs.

Active ERC Registry (as of 1/2/2024)Community Bank ERCs (as of 8/11/2023)

The Community Bank is ERCs set aside for essential public service projects. The definition of 'essential public service' is contained in Rule 215 Section 2.10.

Annual Summary of ERC transactions-California Air Resources Board

MBARD maintains a registry for ERCs for transactions which have occurred in Monterey, San Benito, or Santa Cruz counties.  The registry includes the amount of pollutants in each transaction in units of tons per year. In addition, the California Air Resources Board publishes an annual summary of ERC transactions in the state, showing the amount and price of credits for each transaction statewide.


Application for ERC Transfer

Transfers of ERCs are arranged directly between transferors (sellers) and transferees (buyers). The quantity of ERCs shown on a certificate can be transferred in full or in part.

ERCs may be transferred by the registered holder, upon submittal of an application for ERC transfer by the registered holder to MBARD, and payment of all outstanding obligations to MBARD. ERCs may be transferred in whole or in part. Transfer of the banked reductions shall not be effective until the MBARD informs the holder that notification of the transfer has been received and recorded in the ERC Registry. If reductions are transferred in part, the Banking Certificate must be surrendered to MBARD and a new ERC Banking Certificate issued to reflect the partial transfer. Sources operating in violation of any MBARD rules or regulations shall not be eligible to transfer ERCs or receive transferred ERCs.