Administrative Regulatory requirements Other: (explain) (please select all that apply) Business Case The current system implementation of how Hubs and Load Zones are modeled in the DAM and CRR Auctions is the most appropriate implementation. This NPRR provides transparency by aligning the Protocols with ERCOT systems. ERCOT intends to seek a future NPRR and system change to bring the Real-Time Markets (RTMs) into alignment after careful consideration with stakeholders. Credit Work Group Review ERCOT Credit Staff and the Credit Work Group (Credit WG) have reviewed NPRR868 and do not believe that it requires changes to credit monitoring activity or the calculation of liability. PRS Decision On 3/8/18, PRS voted unanimously to grant NPRR868 Urgent status. PRS then voted unanimously to recommend approval of NPRR868 as submitted and to forward NPRR868 and the Impact Analysis to TAC. All Market Segments were present for the votes. Summary of PRS Discussion On 3/8/18, there was no discussion. TAC Decision On 3/22/18, TAC voted unanimously to recommend approval of NPRR868 as recommended by PRS in the 3/8/18 PRS Report with a proposed effective date of upon Board approval. All Market Segments were present for the vote. Summary of TAC Discussion On 3/22/18, there was no discussion. ERCOT Opinion ERCOT supports approval of NPRR868. Board Decision On 4/10/18, the ERCOT Board approved NPRR868 as recommended by TAC in the 3/22/18 TAC Report. Sponsor Name Carrie Bivens E-mail Address Company ERCOT Phone Number 512-248-6678
69 WLVEE 345 NORTH 70 W_DENT 345 NORTH 71 WTRML 345 NORTH 72 WCSWS 345 NORTH 73 WEBB 345 NORTH 74 WHTNY 345 NORTH 75 WCPP 345 NORTH (2) The North 345 kV Hub Price of the Hub Bus for each hour of the Settlement Interval of the Day-Ahead Market (DAM) in the Day-Ahead and is the simple average of the Hub Bus prices for each 15-minute Settlement Interval in Real-Time, for each Hub Bus included in this Hub. (3) The Day-Ahead Settlement Point Price of the Hub for a given Operating Hour is calculated as follows: weighted
(4) The Real-Time Settlement Point Price of the Hub for a given 15-minute Settlement Interval is calculated as follows: RTSPP North345 = Max [-$251, (RTRSVPOR + RTRDP + (HUBDF hb, North345 * ((RTHBP hb, North345, y * TLMP y) / (TLMP y))))], if HB North345≠0 RTSPP North345 = RTSPPERCOT345Bus, if HB North345=0 Where: RTRSVPOR = (RNWF y * RTORPA y) RTRDP = (RNWFy * RTORDPAy)
(4) The Real-Time Settlement Point Price of the Hub for a given 15-minute Settlement Interval is calculated as follows: RTSPP Houston345 = Max [-$251, (RTRSVPOR + RTRDP + (HUBDF hb, Houston345 * ((RTHBP hb, Houston345, y * TLMP y) / (TLMP y))))], if HB Houston345≠0 RTSPP Houston345 = RTSPPERCOT345Bus, if HB Houston345=0 Where: RTRSVPOR = (RNWF y * RTORPA y) RTRDP = (RNWFy * RTORDPAy) RNWF y = TLMP y / TLMP y RTHBP hb, Houston345, y = (HBDF b, hb, Houston345 * RTLMP b, hb, Houston345, y)
(4) The Real-Time Settlement Point Price of the Hub for a given 15-minute Settlement Interval is calculated as follows: RTSPP Pan345 = Max [-$251, (RTRSVPOR + RTRDP + (HUBDF hb, Pan345 * ((RTHBP hb, Pan345, y * TLMP y) / ( TLMP y))))], if HB Pan345≠0 RTSPP Pan345 = RTSPP ERCOT345Bus, if HB Pan345=0 Where: RTRSVPOR = (RNWF y * RTORPA y) RTRDP = (RNWF y * RTORDPA y) RNWF y = TLMP y / TLMP y RTHBP hb, Pan345, y = (HBDF b, hb, Pan345 * RTLMP b, hb, Pan345, y) HUBDF hb, Pan345 = IF(HB Pan345=0, 0, 1 / HB Pan345) HBDF b, hb, Pan345 = IF(B hb, Pan345=0, 0, 1 / B hb, Pan345) The above variables are defined as follows: