Requested
Client Action: Information Only
Date of
Distribution: January 12,
2007
Categories: Legal/ Regulatory, Market Rules and
Market Design
Subject: Amendment 72 – Posting of
Recommended Modifications
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Summary: Following a stakeholder process to
identify and evaluate potential refinements to Tariff Amendment 72, the CAISO
has finalized its recommendation, which will be presented for approval to the
CAISO Board of Governors on January 25, 2007. The final recommendations are summarized
in a white paper posted to the CAISO website.
___________________________________________________
Main
Text: The California ISO (CAISO) has
completed a stakeholder process to identify and consider potential refinements
to Amendment 72. After
consideration of all the feedback received, both from stakeholders and CAISO
staff, the CAISO has finalized its recommendation. This recommendation is posted on the
CAISO website at: http://www.caiso.com/18c9/18c9b8e3224d0.html.
The CAISO will seek Board of
Governors’ approval of this recommendation at the January 25, 2007 Board
meeting.
Background
In October 2005, the California ISO
(CAISO) filed Tariff Amendment 72, which required Scheduling Coordinators (SCs)
to submit day-ahead schedules equal to at least 95% of their forecast demand for
each hour of the next day. The 95%
day-ahead scheduling requirement was designed to enhance reliability and reduce
the need for the CAISO to take actions to protect against underscheduling, such
as requiring additional capacity to be on-line through Must-Offer Waiver
denials.
Overall compliance with the 95%
day-ahead scheduling requirement has been extremely high since spring 2006,
particularly during peak hours.
However, some participants and CAISO operations staff have expressed
concerns about the impacts and difficulty of complying with the 95% scheduling
requirement, particularly during off-peak and weekend hours. In response to these concerns, the CAISO
initiated a stakeholder process to identify and consider potential refinements
to Amendment 72.
Activities
On December 12, 2006, the CAISO
posted a white paper outlining issues with Amendment 72 and a draft straw
proposal for changes to Amendment 72.
Comments to the white paper were posted December 20, 2006. Following review of the comments and
feedback during the December 20, 2006 stakeholder conference call, an addendum
to the white paper was posted outlining specific options for modifications to
Amendment 72. The Addendum was
posted on December 22, 2006 and comments to the Addendum were posted January 8,
2007.
All of these documents can be viewed
on the CAISO website at: http://www.caiso.com/18c9/18c9b8e3224d0.html.
___________________________________________________
For More
Information Contact: Gillian Biedler at
916-608-7203
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.
EA/ComPR/IPS/ds