Cost Allocation Proceedings

Cost allocation proceedings for natural gas recur on a Biennial (BCAP) or Triennial (TCAP) basis. These proceedings address: 

  • The allocation of the costs of service across customers and the design of rates that customers pay.  
  • Gas service rates based on the remaining balances in various utility accounts that have been authorized by the CPUC.  
  • Serve as a forum for various policy and other issues.    

Cost Allocation Proceedings are conducted on a utility basis. 


Pacific Gas and Electric Company




San Diego Gas & Electric Company/Southern California Gas Company


2016 Triennial Cost Allocation Proceeding (TCAP) 

 Phase 1

In December 2014, SDG&E and SoCalGas filed an Application in Phase 1 Natural Gas Rates, requesting CPUC approval to increase those rates effective January 1, 2016.


Phase 2

In July 2015, SDG&E and SoCalGas filed their Application in Phase 2 to update demand forecast and marginal unit costs, effective January 1, 2017.  



2013 SDG&E / SoCalGas Triennial Cost Allocation Proceeding (TCAP)