Mandatory GHG Reporting - Asset Controlling Supplier

This page updated February 4, 2014

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Asset Controlling Suppliers -  System Emission Factors

Pursuant to section 95111(b)(3) of the Regulation for the Mandatory Reporting of Greenhouse Gas Emissions (title 17, California Code of Regulations, section 95100 et seq.), ARB publishes emission factors for all recognized and approved asset-controlling suppliers (ACS) to provide electricity purchasing and selling entities information about potential greenhouse gas emission compliance obligations associated with electricity from these sources.  

Data Year 2014

For data year 2014, ARB has recognized and approved two asset-controlling suppliers based on reports submitted and verified pursuant to section 95111(f) of the MRR:  Bonneville Power Administration (BPA) and Powerex.  BPA is a federal agency which markets electric power from all of the federally owned hydroelectric projects in the Pacific Northwest. Powerex is the wholly-owned electricity marketing subsidiary of BC Hydro – Canada’s third largest electric utility – responsible for marketing BC Hydro’s surplus electricity in the western United States.  The ACS system emission factors applicable to data year 2014, for reporting in 2015, are shown below in Table 3, and as posted in the Detailed ACS System Emission Factors for 2014 with Guidance.

 

Table 3
Asset-Controlling Supplier System Emission Factors
for Data Year 2014 (Reported in 2015)

Bonneville Power Administration (BPA)
ARB ID #4000

0.0192 MT CO2e per MWh

Powerex
ARB ID #3101

0.0216 MT CO2e per MWh


Data Year 2013

For data year 2013, ARB recognized and approved two asset-controlling suppliers based on reports submitted and verified pursuant to section 95111(f) of the MRR: BPA and Powerex.  The ACS system emission factors applicable to data year 2013, reported in 2014, are shown below in Table 2, and as posted in the Detailed ACS System Emission Factors for 2012 and 2013 with Guidance.

 

Table 2
Asset-Controlling Supplier System Emission Factors
for Data Year 2013 (Reported in 2014)

Bonneville Power Administration (BPA)
ARB ID #4000

0.0249 MT CO2e per MWh

Powerex
ARB ID #3101

0.0293 MT CO2e per MWh

 

Data Year 2012

For data year 2012, Bonneville Power Administration (BPA) was the only ACS recognized by ARB.  Section 95111(b)(3) of the MRR specifies that the ACS system emission factor assigned to BPA, which is to be used for emissions data collected in data year 2012 and reported to ARB in 2013, is 20 percent of the default emission factor for unspecified sources. This ACS system emission factor is shown in Table 1.   

Table 1
Asset-Controlling Supplier System Emission Factor
for Data Year 2012 (Reported in 2013)
Bonneville Power Administration (BPA)
ARB ID #4000
0.0856 MT CO2e per MWh


 

For technical questions about the calculation of the ACS system emission factors, please contact Wade McCartney at wmccartn@arb.ca.gov or (916) 327-0822.  For general reporting questions, please contact David Edwards at dedwards@arb.ca.gov or (916) 323-4887.

Asset Controlling Supplier - Registration by May 1

Electric Power Entities may register as an Asset Controlling Supplier pursuant to §95102(a)(17) and §95111(b)(3). Applicants may download and complete the Asset Controlling Supplier application form here:


ARB has posted an Asset Controlling Supplier (ACS) System Emission Factor Calculation workbook in Excel. This workbook will facilitate entity compliance with the system emission factor calculation in Section 95111(b)(4) and 95111(b)(3).

For entities wishing to be considered an Asset Controlling Supplier for reporting 2014 emissions, please submit your application by May 1st. The submission by this date is needed to ensure sufficient time to process and review the application for the upcoming reporting year. Once the application is completed, please submit the form and attachments.

If you have Electric Power Entity questions please contact Wade McCartney, 916.327.0822


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