Information Technology Report Trey Felton Manager, IT Service Delivery September 2011 ERCOT Public

2 September 2011 Highlights Service Availability: Market Operations IT systems met all SLA targets Market Data Transparency IT systems met all SLA targets Retail Market IT systems met all SLA targets System maintenance of the Market Information System (MIS) database and applications to correct intermittent data posting errors to the public dashboards on ERCOT.com (8/10) Components of MIS affected for up to 30 minutes from 10:30pm until 11:00pm TML Report Explorer was unavailable for 50 minutes (8/23) and degraded for 100 minutes (8/24) Find Transaction and Find ESIID were affected; users may have received “System Not Responding” Enterprise Application Integration had to be restarted due to a configuration issue, which has now been fixed ERCOT experienced system issues that prevented reports from being downloaded from the Market Information page on ERCOT.com (8/24) –Issue lasted for 159 minutes; the reports continued to be available through MIS

3 Digital Certificates  Background  ERCOT’s digital certificate vendor has migrated public root certification to 2048-bit, which in turn requires all MP’s to utilize 2048-bit certificates. Digital certificates are required to access, download, submit, and query ERCOT systems. Timeline and required action –No later than Sept 30 th, Market Participants must update their certificates to 2048-bit Market Operations Test Environment (MOTE) has been configured for testing MP technical staff can follow 5 steps in the ERCOT SSL Communications Standards –After Oct 1 st, all 1024-bit certs should be deleted from keystore, as they will no longer be of use –ERCOT will send market notices and brief numerous market participant forums

4 Browser Standard Timeline  ERCOT currently supports Internet Explorer 6 and 7 browsers  Other browsers are mostly, if not fully, compatible though not supported by ERCOT IT staff (Firefox, Safari, Chrome, etc)  ERCOT is planning to have all market facing applications compatible with Microsoft browser IE8 (Internet Explorer v8) by April 1, 2012  The IE8 browser comes with the latest version of Microsoft Windows Operating Systems (Windows 7) and contains improved security features.  Prior to April 1 st, 2012 ERCOT will publish a list of recommended IE8 browser configuration settings ERCOT’s support for IE8 will allow Market Participants to upgrade their browsers anytime after the effective date –Any Market Participant that has a problem with IE8 after April 1, 2012, can report the issue to Client Services or to ERCOT’s Helpdesk –ERCOT will continue to support Microsoft IE7 until mid No action is required from Market Participants at this time.

5 ERCOT Public 2011 Net Service Availability (Retail and Market Ops) September 2011

Data Center Availability ERCOT PublicSeptember 2011

7 ERCOT Public August 2011 Net Service Availability September 2011

8 August 2011 Data Center Power Availability ERCOT PublicSeptember 2011

9 YTD Availability – Retail Market IT Services ERCOT PublicSeptember 2011

10 YTD Availability – Market Operations ERCOT PublicSeptember 2011

11 ERCOT Public TML Report Explorer Availability September 2011

12 MIS Availability ERCOT PublicSeptember 2011

13 Release Management Metrics (Releases) ERCOT PublicSeptember 2011 Awaiting slide

14 Release Management Metrics (Changes) ERCOT PublicSeptember 2011 Awaiting slide

15 ERCOT Public Website Metrics (August 2011) ERCOT PublicSeptember 2011 Awaiting slide

16 ERCOT Public Website Metrics (August 2011) ERCOT PublicSeptember 2011 Awaiting slide