LADWP uses the ATC formula in R7 and R8 of the MOD-029-1a Rated System Path Methodology: ATCF = TTC ETCF CBM TRM + PostbackF + CounterflowsF – – – ATCF is the firm Available Transfer Capability for the ATC Path for that period. TTC is the Total Transfer Capability of the ATC Path for that period. ETCF is the sum of existing firm commitments for the ATC Path during that period. CBM is the Capacity Benefit Margin for the ATC Path during that period. LADWP currently does not utilize CBM. TRM is the Transmission Reliability Margin for the ATC Path during that period. LADWP currently does not utilize TRM. PostbacksF are changes to firm Available Transfer Capability due to a change in the use of Transmission Service for that period, as defined in Business Practices. CounterflowsF are adjustments to firm Available Transfer Capability as determined by the Transmission Service Provider and specified in their ATCID. ATCNF = TTC ETCF ETCNF CBMS TRMU + PostbackNF + – – – – CounterflowsNF ATCNF is the non-firm Available Transfer Capability for the ATC Path for that period. TTC is the Total Transfer Capability of the ATC Path for that period. is the sum of existing firm commitments for the ATC Path during that ETCF period. ETCNF is the sum of existing non-firm commitments for the ATC Path during that period.
LADWP uses the ATC formula in R7 and R8 of the MOD-029-1a Rated System Path Methodology: ATCF = TTC – ETCF – CBM – TRM + PostbackF + CounterflowsF ATCF is the firm Available Transfer Capability for the ATC Path for that period. TTC is the Total Transfer Capability of the ATC Path for that period. ETCF is the sum of existing firm commitments for the ATC Path during that period. CBM is the Capacity Benefit Margin for the ATC Path during that period. LADWP currently does not utilize CBM. TRM is the Transmission Reliability Margin for the ATC Path during that period. LADWP currently does not utilize TRM. PostbacksF are changes to firm Available Transfer Capability due to a change in the use of Transmission Service for that period, as defined in Business Practices. CounterflowsF are adjustments to firm Available Transfer Capability as determined by the Transmission Service Provider and specified in their ATCID. ATCNF = TTC – ETCF – ETCNF – CBMS – TRMU + PostbackNF + CounterflowsNF ATCNF is the non-firm Available Transfer Capability for the ATC Path for that period. TTC is the Total Transfer Capability of the ATC Path for that period. ETCF is the sum of existing firm commitments for the ATC Path during that period. ETCNF is the sum of existing non-firm commitments for the ATC Path during that period.