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ERCOT Client Relations <[log in to unmask]>
Fri, 14 Mar 2008 15:01:36 -0500
NOTICE DATE:  March 14, 2008

NOTICE TYPE:  W-A031408-01 Operations


SHORT DESCRIPTION:  On Tuesday, April 1, 2008, ERCOT will begin
unannounced generator unit testing per approved Protocol Revision
Request (PRR) 750, Unannounced Generation Capacity Testing.


DAY AFFECTED:  April 1, 2008

LONG DESCRIPTION: ERCOT will begin unannounced generator testing as
described in Protocol Section 6.10.2, General Capacity Testing
Requirements.  As a result of PRR750, Qualified Scheduling Entities
(QSEs) will no longer perform seasonal Net Dependable Capability (NDC)
testing. However, QSEs are required to submit seasonal Net Dependable
Capability for each represented Generation Resource within the first 15
days of the season.  The NDC will be utilized by ERCOT in place of the
previous NDC submitted from previous tests.  ERCOT will begin utilizing
this information and require all data to be updated by April 1, 2008.
The seasons are defined in Protocol Section 2, Definitions and Acronyms.

ERCOT will use the lower of NDC, High Sustainable Limit (HSL) from the
Resource Plan or telemetered HSL in order to calculate responsive
reserve.   The unannounced generation test will verify that the HSL
reported in the Resource Plan is achievable.   ERCOT will, at its
discretion, begin conducting unannounced Generation Resource testing.
Please review the details of the testing requirements described in
Protocol Section 6.10.2.  


ACTION REQUIRED:  The QSE Seasonal Net Real Power Submission Form for
Generation Resources is attached and should be submitted to 
[log in to unmask] <mailto:[log in to unmask]> .  The Unannounced
Seasonal Generation Verification Test Form is also attached.  The yellow
highlighted fields should be filled in by the QSE at the time of the
unannounced test and submitted to [log in to unmask]
<mailto:[log in to unmask]>  upon test completion.



Attached Test Forms:

Unannounced Capability Verification Form

QSEs Seasonal HSL Submission Form


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]> .

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