1. Load Resource Deployment Summary 2006 to Present 2006 DateTime Duration (min) Amount of Response (MW)Type of Deployment 4/17/200615:341751357EECP Step 2, Systemwide Manual Deployment 10/3/200617:371371291 Systemwide Manual Deployment (VDI) related to frequency restoration as a result of a potential NERC DCS Event 12/22/20062:54641215 UF Spike < 59.7 but of uncertain duration followed by ERCOT Operator VDI. 2007 DateTime Duration (min) Amount of Response (MW)Type of Deployment 7/2/200719:38251184 Systemwide Manual Deployment (VDI) related to frequency restoration as a result of a potential NERC DCS Event 9/5/20077:57921206 Systemwide Manual Deployment (VDI) related to frequency restoration as a result of a potential NERC DCS Event 12/12/20071:56191104 Systemwide Manual Deployment (VDI) related to frequency restoration as a result of a potential NERC DCS Event

2. 2008 DateTime Duration (min) Amount of Response (MW)Type of Deployment 2/26/200818:49791211EECP Step 2, Systemwide Manual Deployment 3/16/200811:374632UF Event for Frequency < 59.7 Hz but less than 20 cycles 8/11/200817:14411179 Systemwide Manual Deployment (VDI) related to frequency restoration as a result of a potential NERC DCS Event 12/16/200815:4946837 Systemwide Manual Deployment (VDI) related to frequency restoration as a result of a potential NERC DCS Event 2009 DateTime Duration (min) Amount of Response (MW)Type of Deployment No Deployment Events 2010 DateTime Duration (min) Amount of Response (MW)Type of Deployment 1/9/201010:3230922 Systemwide Manual Deployment (VDI) related to frequency restoration as a result of a potential NERC DCS Event 5/15/201016:14361112UF Event for frequency < 59.7 Hz but of uncertain duration 6/23/201015:2040817 UF Event followed by VDI to selected QSEs for frequency restoration as a result of a NERC DCS Event 8/20/201015:28121329 Systemwide Manual Deployment (VDI) related to frequency restoration as a result of a potential NERC DCS Event 11/3/201010:21521301 UF Event followed by VDI to QSEs for frequency restoration as a result of a potential NERC DCS Event

3. 2011 DateTime Duration (min) Amount of Response (MW)Type of Deployment 2/2/20115:24515887EEA Level 2A, Systemwide Manual Deployment 3/23/201114:4631393 UF Event for frequency near 59.7 Hz that caused some Load Resources to trip offline 4/5/201122:02675 UF Event for frequency near 59.7 Hz that caused some Load Resources to trip offline 5/19/201114:089114 UF Event for frequency near 59.7 Hz that caused some Load Resources to trip offline 8/4/201114:32201863EEA Level 2A, Systemwide Manual Deployment 8/24/201115:10133634EEA Level 2A, Group 1 Manual Deployment 11/29/20113:2915739UF Event for frequency < 59.7 Hz but of uncertain duration 2012 DateTime Duration (min) Amount of Response (MW)Type of Deployment 7/10/201220:4614198 UF Event for frequency near 59.7 Hz that caused some Load Resources to trip offline 7/30/201216:0313324 UF Event for frequency near 59.7 Hz that caused some Load Resources to trip offline 11/2/20121:4111882UF Event for frequency < 59.7 Hz but of uncertain duration

4. 2013 DateTime Duration (min) Amount of Response (MW)Type of Deployment 1/4/20139:4120572 UF Event for frequency near 59.7 Hz that caused some Load Resources to trip offline 1/8/201316:4010974 UF Event for frequency near 59.7 Hz that caused some Load Resources to trip offline 11/1/201321:4710463 UF Event for frequency near 59.7 Hz that caused some Load Resources to trip offline 2014 DateTime Duration (min) Amount of Response (MW)Type of Deployment 1/6/20146:53601028 Initially to maintain frequency but then went into EEA Level 2 with a Systemwide Deployment 1/18/20148:4159850 UF Event for frequency near 59.7 Hz that caused some Load Resources to trip offline; resulted in EEA Level 1 event.