NOTICE DATE: November 6,
2009
NOTICE TYPE: M-B110609-01
Settlements
SHORT DESCRIPTION: Back
out and re-run of data aggregation process
INTENDED AUDIENCE: QSE
Settlements personnel
DAY AFFECTED: Operating
Day September 4, 2009
LONG DESCRIPTION: For the
Final Settlement of Operating Day September 4, 2009, Market Participants may
notice slight differences when performing routine shadow settlement
calculations. These differences may be attributed to the fact that the data
aggregation process was re-run during the nightly batch process but the
settlements process was not re-run and therefore used data from the first data
aggregation process instead of the second. There was a minor change in the total
system load reported between the two aggregation runs. The differences for two
of the major bill determinants used in the settlements process are listed
below.
The LTOTQSE
difference are -0.1803 min and 0.6138 max MWhs.
The
LQSECMUFE difference are -0.116 min and 0.6314 max MWhs.
Generation
totals and Non Opt-In Entity (NOIE) load were not affected.
ERCOT will
ensure that these differences are corrected and included in the True-Up run of
this Operating Day.
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].
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