NOTICE DATE: January 28, 2014
NOTICE TYPE: W-A123013-02 Operations
SHORT DESCRIPTION: Implementation of generic shadow price caps for previously irresolvable constraints in SCED
INTENDED AUDIENCE: ERCOT Market Participants
DATES AFFECTED: January 29, 2014
LONG DESCRIPTION: Market Notice W-A123013-01 Operations, issued on December 30, 2013, indicated that as of January 29, 2014, the following constraints will no longer be considered irresolvable by SCED:
Contingency Name
Constraint Name
Description
Current
Maximum
Shadow
Price
Maximum
Shadow Price
effective
January 29, 2014
DGRSLNC5
6856__B
Graham to Long Creek 345 kV overloads
Bomarton - Seymour 69 kV
$2,000.00
$2,800.00
SODBODN9
6860__A
Odessa Basin Sw to Odessa North 69 kV overloads
Holt Sw - Ector Shell Tap 69 kV
$2,320.68
$2,800.00
DW_DDEN8
AIR_W_DE_1
Denton - Argyle / West Denton 138 kV overloads
Jim Crystal - West Denton 138 kV
$2,000.00
$3,500.00
SNCWMOS8
ODNTH_FMR1
Holt Sw - Moss Sw 138 kV overloads Odessa North 138/69 kV transformer
$2,000.00
$3,500.00
XWI2N89
6920_E_1
Wink Tnp Winkat1 138/69 kV overloads
Wink Tnp to Wink substation 69kV
$2,000.00
$2,800.00
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-A123013-01 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 January 29, 2014.
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