NOTICE DATE: July 24, 2014 NOTICE TYPE: W-A072414-01 Operations SHORT DESCRIPTION: Implementation of maximum shadow price for an irresolvable constraint in SCED INTENDED AUDIENCE: ERCOT Market Participants DAY AFFECTED: July 24, 2014 LONG DESCRIPTION: On July 24, 2014, ERCOT is implementing a modified maximum shadow price for a constraint that was found to be irresolvable per the criteria defined in Section 3.6.1 of the business practice document, "Setting the Shadow Price Caps and Power Balance Penalties in Security Constrained Economic Dispatch." The contingency/constraint pair and maximum shadow price (set in accordance with Section 3.6.2 of that same document) are as follows: Contingency Name Constraint Name Description Maximum Shadow Price SSALSK28 6146__A Loss of the 138 kV line from Skywest to Salt Flat Road overloading the 138 kV line from Midland East to Buffalo $2,377.57 ADDITIONAL INFORMATION: The business practice document is posted under Key Documents on the Real-Time Market webpage<http://www.ercot.com/mktinfo/rtm/>. 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]>. If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com. sa