Real-Time Imbalance Energy Offset

Background In response to inquiries by market participants regarding the real-time imbalance energy offset (Charge Code (CC) 6477) for the month of April, the California ISO conducted a review of the first monthly invoice published under the new market model launched April 1, 2009. The ISO seeks to discuss its findings with stakeholders. The imbalance energy offset is calculated by summing the settlement dollar values for the following charge codes: real-time instructed imbalance energy (CC6470), real-time uninstructed imbalance energy (CC6475), real-time unaccounted for energy (CC6474) and the HASP energy, congestion and loss pre-dispatch (CC6051), less real-time congestion offset (CC6774). Consistent with Section 11.5.4.2 of the ISO Tariff, allocation of CC6477 is based on measured demand in pro rata share to all scheduling coordinators (SCs) including Metered Sub-System (MSS) operators that are not load following and have elected gross settlement.

Outcome Pending closure of initiative.

Process

Relevant Market Notices

Stakeholder Comments on Real-Time Imbalance Energy Offset Straw Proposal California Department of Water Resources State Water Project Comments on September 23, 2009 Real-Time Imbalance Energy Offset Straw Proposal pdf 65K | Abstract | 10/07/2009 14:52 California Large Energy Consumers Association Comments on September 23, 2009 Real-Time Imbalance Energy Offset Straw Proposal pdf 11K | Abstract | 10/07/2009 14:41 California Manufacturers and Technology Association (CMTA) and Energy Users Forum (EUF) Comments on September 23, 2009 Real-Time Imbalance Energy Offset Straw Proposal pdf 105K | Abstract | 10/07/2009 14:39 Cities of Anaheim, Azusa, Banning, Colton, Pasadena, and Riverside, California Comments on September 23, 2009 Real-Time Imbalance Energy Offset Straw Proposal pdf 84K | Abstract | 10/07/2009 14:47 J.P. Morgan Comments on September 23, 2009 Real-Time Imbalance Energy Offset Straw Proposal pdf 19K | Abstract | 10/07/2009 14:49 Pacific Gas and Electric Company Comments on September 23, 2009 Real-Time Imbalance Energy Offset Straw Proposal pdf 76K | Abstract | 10/07/2009 14:38 Powerex Comments on September 23, 2009 Real-Time Imbalance Energy Offset Straw Proposal pdf 16K | Abstract | 10/07/2009 14:50 Southern California Edison Comments on September 23, 2009 Real-Time Imbalance Energy Offset Straw Proposal pdf 72K | Abstract | 10/07/2009 14:36 Western Power Trading Forum Comments on September 23, 2009 Real-Time Imbalance Energy Offset Straw Proposal pdf 68K | Abstract | 10/07/2009 14:45

Stakeholder Conference Call 28-Sep-2009 Agenda - Real-Time Imbalance Energy Offset Conference Call 28-Sep-2009 pdf 91K | Abstract | 09/24/2009 15:25 Presentation - Real-Time Imbalance Energy Offset Straw Proposal pdf 113K | Abstract | 09/24/2009 15:28 Straw Proposal - Real-Time Imbalance Energy Offset pdf 49K | Abstract | 09/23/2009 16:42

Real-Time Imbalance Energy Offset Settlement Tariff Modifications Real-Time Imbalance Energy Offset Settlement Tariff Modifications 17-Sep-2009 pdf 12K | Abstract | 09/17/2009 09:45 NCPA Comments on Real-Time Imbalance Energy Offset Settlement Tariff Modifications 22-Sep-2009 pdf 18K | Abstract | 09/23/2009 09:47

Stakeholder Comments on Real-Time Imbalance Energy Offset Issue Paper CDWR-SWP Comments on Real-Time Imbalance Energy Offset Issue Paper pdf 77K | Abstract | 09/14/2009 07:53 CEI Comments on Real-Time Imbalance Energy Offset Issue Paper pdf 48K | Abstract | 09/14/2009 07:57 Dynegy Comments on Real-Time Imbalance Energy Offset Issue Paper pdf 3K | Abstract | 09/14/2009 07:59 Gila River Power Comments on Real-Time Imbalance Energy Offset Issue Paper pdf 37K | Abstract | 09/14/2009 08:02 JPMorgan Comments on Real-Time Imbalance Energy Offset Issue Paper pdf 13K | Abstract | 09/14/2009 08:03 NCPA Comments on Real-Time Imbalance Energy Offset Issue Paper pdf 96K | Abstract | 09/14/2009 08:05 PG&E Comments on Real-Time Imbalance Energy Offset Issue Paper pdf 83K | Abstract | 09/14/2009 08:06 Powerex Comments on Real-Time Imbalance Energy Offset Issue Paper pdf 17K | Abstract | 09/14/2009 08:08 SCE Comments on Real-Time Imbalance Energy Offset Issue Paper pdf 68K | Abstract | 09/15/2009 17:18 Six Cities Comments on Real-Time Imbalance Energy Offset Issue Paper pdf 75K | Abstract | 09/14/2009 08:11 Western Comments on Real-Time Imbalance Energy Offset Issue Paper pdf 20K | Abstract | 09/14/2009 08:17

Stakeholder Conference Call 28-Aug-2009 Presentation - Analysis of Real-Time Imbalance Energy Offset 28-Aug-2009 pdf 772K | Abstract | 08/27/2009 13:57

Issue Paper Updated Issue Paper - Analysis of Real-Time Imbalance Energy Offset (CC 6477) pdf 730K | Abstract | 08/26/2009 16:28 Issue Paper - Analysis of Real-Time Imbalance Energy Offset (CC 6477) pdf 416K | Abstract | 08/24/2009 18:59