Market Rules and Market Design

April 21, 2008

Requested Client Action

Request for Comment

Integrated Balancing Authority Areas

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Summary

The CAISO has posted additional information regarding the modeling and pricing methodology of Integrated Balancing Authority Areas (IBAA). Please submit comments on the Draft Final Proposal by close of business April 25, 2008.

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Main Text

This is a reminder that the California ISO (CAISO) posted a Draft Final Proposal regarding the modeling and pricing methodology of Integrated Balancing Authority Areas (IBAA) and a stakeholder comment template to its website at http://www.caiso.com/1f50/1f50ae5b32340.html. Stakeholders can submit comments on the proposal to kalmeida@caiso.com by close of business Friday, April 25, 2008.

The CAISO MRTU program encompasses a comprehensive overhaul of the CAISO electricity markets designed to both enhance reliability and increase the efficient utilization of the transmission system. As part of its larger effort to improve its ability to reliably manage congestion on the transmission system, the CAISO has identified needed improvements in modeling and pricing transactions to and from IBAA.

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For More Information Contact

Keoni Almeida at kalmeida@caiso.com

The California ISO strives to be a world-class electric transmission organization built around a globally recognized and inspired team providing cost-effective and reliable service, well-balanced energy market mechanisms, and high-quality information for the benefit of our customers.