NOTICE DATE:  February 10, 2015
NOTICE TYPE:  W-A011215-02 Operations
SHORT DESCRIPTION:  Implementation of generic shadow price caps for previously irresolvable constraints in SCED
INTENDED AUDIENCE:  ERCOT Market Participants
DAY AFFECTED:  February 11, 2015
LONG DESCRIPTION:  Market Notice W-A011215-01 Operations, issued on January 12, 2015, indicated that as of February 11, 2015, the following constraint will no longer be considered irresolvable by SCED:
Contingency Name

Constraint Name

Description

Current
Maximum
Shadow
Price

Maximum
Shadow Price
effective
January 30, 2015

SSALSK28

6146__A

Skywest to Salt Flat Road 138kV line overloads Midland East to Buffalo 138kv line

$2,481.67

$3,500


Section 3.6 of the business practice document, Methodology for Setting Max Shadow Prices, requires a 30-day notice before the shadow price caps for SCED resolvable constraints are reset to their default values.  As indicated in Market Notice W-A011215-01 Operations, the generic transmission shadow price caps will be used in SCED, in accordance with Section 3.5 of the ERCOT Business Practice document, effective February 11, 2015.
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 email at [log in to unmask]<mailto:[log in to unmask]>.
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