PCM (Production Cost Model) Data Work Group Webinar 2028 ADS PCM Version 2.0 Validation Western Electricity Coordinating Council

Western Electricity Coordinating Council Overview 2028 ADS PCM V2.0 Validation Wheeling Rates Update BAA Load Fixes NVE Loads Resources Edits AESO Generation Capacity Fixes Western Electricity Coordinating Council

Western Electricity Coordinating Council Wheeling Rates Jamie Austin & Yi Zhang Western Electricity Coordinating Council

Western Electricity Coordinating Council Wheeling Rates Edits Anders Johnson, BPA: Hurdle rates representing the variable cost of transmitting power between balancing authorities within the Pacific Northwest should be estimated as $0/MWh in the GridView case. The reason is that transmission wheeling charges for transactions within the Pacific Northwest represent fixed cost of this transmission capacity is reserved under long term contracts with take or pay provisions. Power marketing activity in the Pacific Northwest is commonly conducted through bilateral transactions involving liquid market hubs such as Mid-Columbia Western Electricity Coordinating Council

Wheeling Seams Canada - NW NW TOT 2 CA

TOT 2 Transfer Limit: North-to-South: 265 MW South-to-North: 300 MW 647 MW north to south, 700 MW south to north TOT 2 Transfer Limit: North-to-South: 600 MW South-to-North: 580 MW Transfer Limit: North-to-South: 265 MW South-to-North: 300 MW

Wheeling (Tariff Rates) $/MWh Wheeling Rates (V2.0) Wheeling (Tariff Rates) $/MWh Interface by Zone-to-Zone Forward Backward W01_AB_AESO__BC_BCHA 2.24 9.5 Wb2_SW_TH_Mead__SW_NVE 7.27 W24_BS_IPCO__SW_NVE 2.67 Wb6_SW_TH_Mead__CA_LDWP 6.1 W25_BS_PACE__BS_IPCO 0.0 3.22 0.0 2.79 Wb5_SW_TH_Mead__CA_CISO 12.5 W26_BS_PACE__CA_LDWP 3.67 3.22 Wb1_SW_TH_Mead__SW_WALC 1.99 W27_BS_PACE__RM_WACM 5.2 Wb3_SW_TH_Mead__SW_AZPS 4.13 W28_BS_PACE__SW_AZPS Wb4_SW_TH_Mead__SW_SRP 2.52 W29_BS_PACE__SW_NVE W58_CA_IID__CA_CISO 3.47 W30_BS_PACE__SW_WALC W59_CA_LDWP__CA_CISO W56_CA_CISO__CA_BANC+ 2.64 W57_CA_CISO__CA_CFE 2.41 W31_RM_PSCO__SW_PNM 3.23 4.34 Northwest Paths   W32_RM_WACM__RM_PSCO W20_BS_IPCO__NW_AVA 2.79 W33_RM_WACM__SW_PNM W21_BS_IPCO__NW_BPAT+ W34_RM_WACM__SW_WALC W22_BS_IPCO__NW_PACW 3.67 3.22 W35_SW_AZPS__CA_CISO W03_NW_AVA__NW_BPAT+ W36_SW_AZPS__CA_IID W04_NW_AVA__NW_PACW 3.22 W37_SW_AZPS__CA_LDWP W06_NW_BPAT+__BC_BCHA 7.43 W38_SW_AZPS__SW_PNM W07_NW_BPAT+__CA_BANC+ W39_SW_AZPS__SW_SRP W08_NW_BPAT+__CA_CISO W40_SW_AZPS__SW_TEPC 3.73 W09_NW_BPAT+__CA_LDWP W41_SW_AZPS__SW_WALC W10_NW_BPAT+__NW_PACW W42_SW_NVE__CA_CISO W13_NW_BPAT+__SW_NVE W43_SW_NVE__CA_LDWP W18_NW_PACW__CA_CISO W44_SW_NVE__SW_WALC W23_BS_IPCO__NW_PGE W45_SW_PNM__SW_EPE W05_NW_AVA__NW_PGE W46_SW_PNM__SW_WALC W11_NW_BPAT+__NW_PGE W47_SW_SRP__CA_CISO W12_NW_BPAT+__NW_PSEI W48_SW_SRP__SW_TEPC W19_NW_PACW__NW_PGE W49_SW_SRP__SW_WALC Wc2_NW_TH_Malin__NW_PACW W50_SW_TEPC__SW_EPE Wc4_NW_TH_Malin__CA_CISO W51_SW_TEPC__SW_PNM Wc3_NW_TH_Malin__CA_BANC+ W52_SW_WALC__CA_CISO Wc1_NW_TH_Malin__NW_BPA+ W53_SW_WALC__CA_IID W02_AB_AESO__NW_NWMT+ 4.95 W54_SW_WALC__CA_LDWP W14_NW_NWMT+__BS_PACE W55_SW_WALC__SW_TEPC W15_NW_NWMT+__NW_AVA Wa1_SW_TH_PV__CA_CISO W16_NW_NWMT+__NW_BPAT+ Wa2_SW_TH_PV__SW_AZPS W17_NW_NWMT+__RM_WACM Wa3_SW_TH_PV__SW_SRP W_CA_AB32_NW-CA 0.828

BPA’s Long-Term Available Transfer Capability PATH NAME TTC (MW) 2025 2026 2027 2028 2029 South of Allston N>S 2115 636 680 720 756 787 Cross Cascades North E>W 10250 390 332 274 215 156 West of Lomo E>W 4200 984 994 1004 1014 1023 Cross Cascades South E>W 7500 781 728 707 687 667 North of Hanford N>S 4450 1710 1684 1656 1624 1588 North of John Day N>S 8800 2035 2003 1971 1938 1905 Paul-Allston N>S 2400 1049 1031 1013 975 Raver-Paul N>S 1450 56 46 35 25 15 West of McNary E>W 5230 2573 2592 2610 2629 2647 West of Slatt E>W 4670 1547 1565 1584 1602 1620 West of John Day E>W 4530 979 854 814 769 723 South of Custer N>S 1850 731 733 735 738 North of Echo Lake S>N 2800 66 34 1   AC Intertie N>S 2725 AC Intertie S>N 1391 Northern Intertie N>S 1335 50 Northern Intertie S>N 1120 DC Intertie N>S 3100 228 DC Intertie S>N 1904 1704 LaGrande E>W 413 126 LaGrande W>E 350 12 Montana Intertie E>W 1930 184 RATS N>S 300 181 RATS S>N 270 John Day Wind Gen 1200 195 Rock Creek Wind Gen 352 353 359 West of Garrison E>W 1618 West of Garrison W>E 931 533 West of Hatwai E>W 3650

BPA’s Long-Term Available Transfer Capability PATH NAME TTC (MW) 2025 2026 2027 2028 2029 CONDITIONAL FIRM INVENTORY (CFI) South of Allston N>S 2115 188 Cross Cascades North E>W 10250 1815 West of Lomo E>W 4200 814 Cross Cascades South E>W 7500 1849 North of Hanford N>S 4450 1453 North of John Day N>S 8800 1036 Paul-Allston N>S 2400 678 Raver-Paul N>S 1450 355 West of McNary E>W 5230 1446 West of Slatt E>W 4670 1644 West of John Day E>W 4530 1762 South of Custer N>S 1850 993 North of Echo Lake S>N 2800

Tyler Butikofer Associate Engineer II Generation Edits Tyler Butikofer Associate Engineer II Western Electricity Coordinating Council

Western Electricity Coordinating Council AESO Edits Keephills 1, 2 and Sundance 3-6 changed to Steam-Natural Gas 1810 MW reduction in capacity due to removing duplicate units and updated retirement dates Capacity was 24,536 MW, reduced to 22,726 MW Other data updated not affecting capacity Commission dates, Co-gen, DevStatus, Sub-types Western Electricity Coordinating Council

Western Electricity Coordinating Council AESO Details Western Electricity Coordinating Council

Other Duplicates in ADS PCM All units listed were turned off an placed on a parked bus. The total turned off was 499.9 MW

Western Electricity Coordinating Council NVEP Loads BPA serves load ~130 MW of load in Sierra Pacific’s Area Wells Rural: ~92 MW Harney: ~35 MW NVEP’s demand forecast in the L&R doesn’t include this 130 MW Conclusion: Use the FERC 714 load forecast for NVEP Western Electricity Coordinating Council

Western Electricity Coordinating Council Contact Information Tyler Butikofer tbutikofer@wecc.biz Western Electricity Coordinating Council