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.
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