NOTICE DATE:  September 26, 2008

NOTICE TYPE:  M-B092608-01 Settlements

CLASSIFICATION: Public

SHORT DESCRIPTION:  ERCOT to adjust Coast Weather Zone Load Profiles

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED:  Operating Days beginning September 13, 2008

LONG DESCRIPTION: In accordance with PUC Project No. 36150 (Issues
Relating to the Disaster Resulting from Hurricane Ike), ERCOT will be
adjusting all Load Profiles for the Coast Weather Zone used for
aggregating load starting with Operating Day September 13, 2008 and
continuing forward until further notice. These adjusted Load Profiles
will first be reflected on the Initial Settlement of Operating Day
September 18, 2008. Adjustments for Operating Days September 13 - 17,
2008 will be reflected in the Final Settlement for these Operating Days.


 

The Coast Weather Zone Load Profiles will be scaled down to better
reflect the proportion of Customers that have power based on market
communications from CenterPoint Energy. For example, if 20% of the
Customers had power on a particular Operating Day, all Coast Weather
Zone Load Profiles for that day would be multiplied by 20% (reduced by
80%). ERCOT will use the daily communications from CenterPoint Energy to
determine the percent of Customers with power.

 

No adjustments will be made to the IDR proxy day process.

 

The coefficients utilized to adjust the Backcasted Load Profiles for the
Coast Weather Zone will be published on the ERCOT website as a Key
Document on the Load Profiling page.  The link to the Load Profiling
page is http://www.ercot.com/mktinfo/loadprofile.

 

ADDITIONAL INFORMATION: ERCOT will host a conference call on Monday,
September 29, 2008 from 10:00 a.m. CPT to 12:00 p.m. CPT to explain the
changes to the Coast Weather Zone Load Profile in support of the PUCT
order. ERCOT will cover the changes to the profiles and take any
questions concerning this change. The conference call information is as
follows:

Call-in toll-free number (US/Canada): 866-469-3239

Meeting Number: 356 327 440

Password: #

 

CONTACT:  If you have any questions, please contact your ERCOT Account
Manager. You may also call the general ERCOT Client Services phone
number at (512) 248-3900 or contact ERCOT Client Services via e-mail at 
[log in to unmask] <mailto:[log in to unmask]> .

If you are receiving e-mail from an ERCOT distribution list that you no
longer wish to receive, please follow this link in order to unsubscribe
from this list: http://lists.ercot.com <http://lists.ercot.com/> .

 

 

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