Information Technology Report

Dave PagliaiManager, IT Support Services

October 2015

ERCOT Public

2 ERCOT PublicOctober 2015

Incident Report Highlights

Service Availability – September Market Data Transparency IT systems met all SLA targets, with the exception ofX Retail API (Find ESIID – 97.8%)

Incidents & Maintenance – September/October 09/20/15 – UNIX Production frame failure in Taylor data center 09/21/15 – Unplanned Maintenance (Site Failover) 10/02/15 – Planned Maintenance (Site Failover) 10/08/15 – Planned Maintenance (Site Failover – External Web Services) 10/09/15 – Planned Maintenance (Site Failover – MIS) 10/11/15 – Planned Maintenance (Site Failover – ercot.com, MPIM, Retail API)

3 ERCOT PublicOctober 2015

Incident Report Highlights

Report Name Frequency EMIL IDReport Type ID

Missed IntervalsNumber of Intervals Missed

Consolidated Transmission Outage Report Chron - Hourly NP3-157-CD 13446 20/09/2015 18:00 - 20/09/2015 21:00 4

Forecasted Temperature Adjusted Dynamic Ratings Chron - Hourly NP3-217-CD 12346 20/09/2015 18:00 - 20/09/2015 21:00 4

Hourly Balancing Authority Operations Report Chron - Hourly EIA-930-CD 13457 20/09/2015 18:00 - 20/09/2015 21:00 4

Hourly Resource Outage Capacity Chron - Hourly NP3-233-CD 13103 20/09/2015 18:00 - 20/09/2015 21:00 4

Hourly State Estimator Phase Shifter Information Chron - Hourly NP6-622-CD 12310 20/09/2015 18:00 - 20/09/2015 21:00 4

Load Forecast Distribution Factors Chron - Hourly NP4-159-CD 12324 20/09/2015 18:00 - 20/09/2015 21:00 4

NSA Active Constraints Chron - 5 Minutes when needed NP6-6-CD 12305 09/20/2015 17:45 - 09/21/2015 03:30 116

NSA Inactive Constraints Chron - 5 Minutes when needed NP5-911-CD 12345 09/20/2015 17:45 - 09/21/2015 03:30 116

QSE Ancillary Services Capacity Monitor Chron - 5 Minutes NP8-143-CD 11025 20/09/2015 17:45 - 20/09/2015 22:15 54

Real Time Dynamic Rating Data Chron - 15 Minutes NP6-215-CD 11024 20/09/2015 17:45 - 20/09/2015 21:45 16

RUC Buy-Back Hours Chron - Hourly NP5-513-CD 13102 21/09/2015 00:00 - 21/09/2015 06:00 6

Seven-Day Load Forecast by Forecast Zone Chron - Hourly NP3-560-CD 12311 20/09/2015 18:00 - 20/09/2015 21:00 4

Seven-Day Load Forecast by Weather Zone Chron - Hourly NP3-561-CD 12312 20/09/2015 18:00 - 20/09/2015 21:00 4

Short-Term System Adequacy Report Chron - Hourly NP3-763-CD 12315 20/09/2015 18:00 - 20/09/2015 21:00 4

State Estimator Bus Voltages Chron - Hourly NP6-627-CD 13048 20/09/2015 18:00 - 20/09/2015 21:00 4

State Estimator Load Report - DC Ties Flows Chron - Hourly NP6-626-CD 12359 20/09/2015 18:00 - 20/09/2015 21:00 4State Estimator Load Report - Total ERCOT Generation

Chron - HourlyNP6-625-CD 12358

20/09/2015 18:00 - 20/09/2015 21:00 4

State Estimator Real-Time Transmission Line Flows Chron - 5 Minutes NP6-619-CD 12308 20/09/2015 17:45 - 20/09/2015 21:45 48

State Estimator Switch Status Chron - Hourly NP6-93-CD 12304 20/09/2015 18:00 - 20/09/2015 21:00 4

System-Wide Demand Chron - Hourly NP6-235-CD 12340 20/09/2015 18:00 - 20/09/2015 21:00 4

Temporarily Removed Contingencies Chron - Hourly NP5-649-CD 12352 20/09/2015 18:00 - 20/09/2015 21:00 4

Topology Consistency Chron - 5 Minutes NP6-291-CD 12309 20/09/2015 17:45 - 20/09/2015 21:45 48

Unconfirmed Ancillary Service Trades Chron - Hourly NP4-439-CD 13084 20/09/2015 15:00 - 21/09/2015 04:00 13

Unconfirmed Capacity TradesChron - Hourly

NP4-437-CD 1308220/09/2015 16:00 - 20/09/2015 23:0021/09/2015 01:00 - 21/09/2015 03:00

10

Unconfirmed Energy Trades Chron - Hourly NP4-438-CD 13083 20/09/2015 18:00 - 21/09/2015 03:00 9

Wind Generation Resource Power Potential Forecast Chron - Hourly NP4-731-SG 12320 20/09/2015 18:00 - 21/09/2015 04:00 10

Wind Power Production - Actual 5-minute averaged values Chron - 5 Minutes NP4-733-CD 13071

20/09/2015 17:40 - 20/09/2015 21:45 49

Wind Power Production - Hourly averaged actual and forecasted values

Chron - HourlyNP4-732-CD 13028

20/09/2015 18:00 - 20/09/2015 21:00 4