Common use of Compute RTO Generation Serving RTO Load Clause in Contracts

Compute RTO Generation Serving RTO Load. Using the real-time generation output in MWs, compute the Generation serving RTO Load. Sum the output of RTO generation within each load zone: _ = ∑ =1 ,, for each RTO load zone Where: zone = the relevant RTO load zone; unit = the relevant generator; RTO_Genzone = the sum of the RTO’s generation in a zone; and Genunit,zone = the real-time output of the unit in a given zone. Next, reduce the RTO generation located within a load zone by the scheduled line real-time export transaction schedules that source from that particular load zone: __ = _ − ∑ _ℎℎ_, Where: zone = the relevant RTO load zone; scheduled_line = each of the Transmission Facilities identified in Table 1 above; RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone; RTO_Genzone = the sum of the RTO’s generation in a zone; and Export_Schedulesscheduled_line,zone = export schedules from a zone over a scheduled line. The real-time export schedules over scheduled lines will only reduce the generation in the source zones identified in Table 1 above. The resulting generator output based on this reduction is defined below. Where: = , (__) _ unit = the relevant generator; zone = the relevant RTO load zone; Genunit,zone = the real-time output of the unit in a given zone; Reduced Genunit = each unit’s real-time output after reducing the RTO_Net_Gen by the real-time export schedules over scheduled lines; RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone; and RTO_Genzone = the sum of the RTO’s generation in a zone. Once export schedules over scheduled lines are accounted for, it is then appropriate to reduce the net RTO generation by the remaining real-time export schedules at the proxies identified in Table 2 above. Where: __ = ∑ __ =1 zone = the relevant RTO load zone; RTO_Net_Gen = the sum of the RTO’s generation reduced by the sum of export schedules over all scheduled lines; and RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone. __ = __ − ∑ _ℎ =1 Where: proxy = representation of defined sets of Transmission Facilities that (i) interconnect neighboring Balancing Authorities,

Compute RTO Generation Serving RTO Load. Using the real-time generation output in MWs, compute the Generation serving RTO Load. Sum the output of RTO generation within each load zone: =1 _ = ∑ =1 ,, , for each RTO load zone Where: zone = the relevant RTO load zone; unit = the relevant generator; RTO_Genzone = the sum of the RTO’s generation in a zone; and Genunit,zone = the real-time output of the unit in a given zone. Next, reduce the RTO generation located within a load zone by the scheduled line real-time export transaction schedules that source from that particular load zone: Where: __ = _ − ∑ _ℎℎ_, Where: ℎ_=1 zone = the relevant RTO load zone; scheduled_line = each of the Transmission Facilities identified in Table 1 above; RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone; RTO_Genzone = the sum of the RTO’s generation in a zone; and Export_Schedulesscheduled_line,zone = export schedules from a zone over a scheduled line. The real-time export schedules over scheduled lines will only reduce the generation in the source zones identified in Table 1 above. The resulting generator output based on this reduction is defined below. __ Where: = , (__( _ ) _ unit = the relevant generator; zone = the relevant RTO load zone; Genunit,zone = the real-time output of the unit in a given zone; Reduced Genunit = each unit’s real-time output after reducing the RTO_Net_Gen by the real-time export schedules over scheduled lines; RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone; and RTO_Genzone = the sum of the RTO’s generation in a zone. Once export schedules over scheduled lines are accounted for, it is then appropriate to reduce the net RTO generation by the remaining real-time export schedules at the proxies identified in Table 2 above. Where: __ = ∑ __ =1 zone = the relevant RTO load zone; RTO_Net_Gen = the sum of the RTO’s generation reduced by the sum of export schedules over all scheduled lines; and RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone. __ = __ − ∑ _ℎ =1 Where: proxy = representation of defined sets of Transmission Facilities that (i) interconnect neighboring Balancing Authorities,

Compute RTO Generation Serving RTO Load. Using the real-time generation output in MWs, compute the Generation serving RTO Load. Sum the output of RTO generation within each load zone: _ 𝑢𝑛𝑖𝑡=1 𝑅𝑇𝑂_𝐺𝑒𝑛𝑧𝑜𝑛𝑒 = ∑ =1 ,∑𝑎𝑙𝑙 𝐺𝑒𝑛𝑢𝑛𝑖𝑡,𝑧𝑜𝑛𝑒 , for each RTO load zone Where: zone = the relevant RTO load zone; unit = the relevant generator; RTO_Genzone = the sum of the RTO’s generation in a zone; and Genunit,zone = the real-time output of the unit in a given zone. Next, reduce the RTO generation located within a load zone by the scheduled line real-time export transaction schedules that source from that particular load zone: __ Where: 𝑅𝑇𝑂_𝑅𝑒𝑑𝑢𝑐𝑒𝑑_𝐺𝑒𝑛𝑧𝑜𝑛𝑒 = _ 𝑅𝑇𝑂_𝐺𝑒𝑛𝑧𝑜𝑛𝑒 − ∑ _ℎℎ_, Where: 𝐸𝑥𝑝𝑜𝑟𝑡_𝑆𝑐ℎ𝑒𝑑𝑢𝑙𝑒𝑠𝑠𝑐ℎ𝑒𝑑𝑢𝑙𝑒𝑑_𝑙𝑖𝑛𝑒,𝑧𝑜𝑛𝑒 𝑠𝑐ℎ𝑒𝑑𝑢𝑙𝑒𝑑_𝑙𝑖𝑛𝑒=1 zone = the relevant RTO load zone; scheduled_line = each of the Transmission Facilities identified in Table 1 above; RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone; RTO_Genzone = the sum of the RTO’s generation in a zone; and Export_Schedulesscheduled_line,zone = export schedules from a zone over a scheduled line. The real-time export schedules over scheduled lines will only reduce the generation in the source zones identified in Table 1 above. The resulting generator output based on this reduction is defined below. 𝑅𝑇𝑂_𝑅𝑒𝑑𝑢𝑐𝑒𝑑_𝐺𝑒𝑛𝑧𝑜𝑛𝑒 Where: 𝑅𝑒𝑑𝑢𝑐𝑒𝑑 𝐺𝑒𝑛𝑢𝑛𝑖𝑡 = , (__𝐺𝑒𝑛𝑢𝑛𝑖𝑡,𝑧𝑜𝑛𝑒 ( 𝑅𝑇𝑂_𝐺𝑒𝑛 ) _ 𝑧𝑜𝑛𝑒 unit = the relevant generator; zone = the relevant RTO load zone; Genunit,zone = the real-time output of the unit in a given zone; Reduced Genunit = each unit’s real-time output after reducing the RTO_Net_Gen by the real-time export schedules over scheduled lines; RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone; and RTO_Genzone = the sum of the RTO’s generation in a zone. Once export schedules over scheduled lines are accounted for, it is then appropriate to reduce the net RTO generation by the remaining real-time export schedules at the proxies identified in Table 2 above. Where: __ 𝑎𝑙𝑙 𝑅𝑇𝑂_𝑁𝑒𝑡_𝐺𝑒𝑛 = ∑ __ =1 𝑅𝑇𝑂_𝑅𝑒𝑑𝑢𝑐𝑒𝑑_𝐺𝑒𝑛𝑧𝑜𝑛𝑒 𝑧𝑜𝑛𝑒=1 zone = the relevant RTO load zone; RTO_Net_Gen = the sum of the RTO’s generation reduced by the sum of export schedules over all scheduled lines; and RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone. __ 𝑎𝑙𝑙 𝑅𝑇𝑂_𝐹𝑖𝑛𝑎𝑙_𝐺𝑒𝑛 = __ 𝑅𝑇𝑂_𝑁𝑒𝑡_𝐺𝑒𝑛 − ∑ _ℎ =1 𝐸𝑥𝑝𝑜𝑟𝑡_𝑆𝑐ℎ𝑒𝑑𝑢𝑙𝑒𝑠𝑝𝑟𝑜𝑥𝑦 𝑝𝑟𝑜𝑥𝑦=1 Where: proxy = representation of defined sets of Transmission Facilities that (i) interconnect neighboring Balancing Authorities,

Compute RTO Generation Serving RTO Load. Using the real-time generation output in MWs, compute the Generation serving RTO Load. Sum the output of RTO generation within each load zone: _ unit=1 RTO_Genzone = ∑ =1 ∑aSS Genunit,zone, for each RTO load zone Where: zone = the relevant RTO load zone; unit = the relevant generator; RTO_Genzone = the sum of the RTO’s generation in a zone; and Genunit,zone = the real-time output of the unit in a given zone. Next, reduce the RTO generation located within a load zone by the scheduled line real-time export transaction schedules that source from that particular load zone: __ = _ − ∑ _ℎℎ_, RTO_Reduced_Genzone aSS Where: = RTO_Genzone — Σ Exeort_SchedulesccheduSed_Sine,zone ccheduSed_Sine=1 zone = the relevant RTO load zone; scheduled_line = each of the Transmission Facilities tTransmission fFacilities identified in Table 1 above; RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone; RTO_Genzone = the sum of the RTO’s generation in a zone; and Export_Schedulesscheduled_line,zone = export schedules from a zone over a scheduled line. The real-time export schedules over scheduled lines will only reduce the generation in the source zones identified in Table 1 above. The resulting generator output based on this reduction is defined below. Reduced Gen Where: = , (__) _ unit = the relevant generator; zone = the relevant RTO load Gen unit,zone; Genunit,zone = the real-time output of the unit in a given zone; Reduced Genunit = each unit’s real-time output after reducing the RTO_Net_Gen by the real-time export schedules over scheduled lines; RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone; and RTO_Genzone = the sum of the RTO’s generation in a zone. Once export schedules over scheduled lines are accounted for, it is then appropriate to reduce the net RTO generation by the remaining real-time export schedules at the proxies identified in Table 2 above. Where: __ = ∑ __ =1 zone = the relevant RTO load zone; RTO_Net_Gen = the sum of the RTO’s generation reduced by the sum of export schedules over all scheduled lines; and RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone. __ = __ − ∑ _ℎ =1 Where: proxy = representation of defined sets of Transmission Facilities that (i) interconnect neighboring Balancing Authorities,

Compute RTO Generation Serving RTO Load. Using the real-time generation output in MWs, compute the Generation serving RTO Load. Sum the output of RTO generation within each load zone: =1 _ = ∑ =1 ,, , for each RTO load zone Where: zone = the relevant RTO load zone; unit = the relevant generator; RTO_Genzone = the sum of the RTO’s generation in a zone; and Genunit,zone = the real-time output of the unit in a given zone. Next, reduce the RTO generation located within a load zone by the scheduled line real-time export transaction schedules that source from that particular load zone: __ = _ − ∑ _ℎℎ_, Where: zone = the relevant RTO load zone; scheduled_line = each of the Transmission Facilities identified in Table 1 above; RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone; RTO_Genzone = the sum of the RTO’s generation in a zone; and Export_Schedulesscheduled_line,zone = export schedules from a zone over a scheduled line. The real-time export schedules over scheduled lines will only reduce the generation in the source zones identified in Table 1 above. The resulting generator output based on this reduction is defined below. __ Where: = , (__( _ ) _ unit = the relevant generator; zone = the relevant RTO load zone; Genunit,zone = the real-time output of the unit in a given zone; Reduced Genunit = each unit’s real-time output after reducing the RTO_Net_Gen by the real-time export schedules over scheduled lines; RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone; and RTO_Genzone = the sum of the RTO’s generation in a zone. Once export schedules over scheduled lines are accounted for, it is then appropriate to reduce the net RTO generation by the remaining real-time export schedules at the proxies identified in Table 2 above. Where: __ = ∑ __ =1 zone = the relevant RTO load zone; RTO_Net_Gen = the sum of the RTO’s generation reduced by the sum of export schedules over all scheduled lines; and RTO_Reduced_Genzone = the sum of the RTO’s generation in a zone reduced by the sum of export schedules over scheduled lines from the zone. __ = __ − ∑ _ℎ =1 Where: proxy = representation of defined sets of Transmission Facilities that (i) interconnect neighboring Balancing Authorities,