Texas Regional Entity Presentation
Texas Regional Entity
Compliance Report
Board of Directors
September 14, 2009
ITEM 4A - COMPLIANCE REPORT
SEPTEMBER 14, 2009
Overview
¡ñ August 2009 ERCOT CPS1 Monthly Performance
¡ñ August 2009 Resource Plan Performance Metrics for
Non-Wind and Wind Only QSEs
¡ñ Texas RE Upcoming Workshops
¡ñ Texas RE Stakeholder Outreach
¡ñ NERC Standards Self-Certification Update
¡ñ Nodal Regulatory Requirements
¡ñ PRR ¨C 822 Removing Access to Restricted Computer
Systems, Control Systems and Facilities
Page 2 of 13
ITEM 4A - COMPLIANCE REPORT
SEPTEMBER 14, 2009
CPS1 Average
August 2009 ERCOT¡¯s CPS1 Monthly Performance
170
170
160
160
150
150
140
140
130
130
120
120
110
110
100
100
Monthly Avg
12 Actual
Mo Rolling Avg
Page 3 of 13
Poly.
(12 Mo Rolling Avg)
Trend
ITEM 4A - COMPLIANCE REPORT
SEPTEMBER 14, 2009
Analysis of CPS1 Monthly Performance
¡ñ Purpose: To maintain Interconnection steady-state
frequency within defined limits by balancing real
power demand and supply in real-time
¡ñ CPS1 is one reliability measure of how well the ERCOT
region managed the BPS
¡ñ ERCOT region¡¯s frequency performance is determined
by NERC Control Performance Standard 1 (CPS1)
¡ñ Seasonal fluctuation is expected
¡ñ Scores for individual months can be adversely affected
by events (such as hurricanes)
¡ñ A detailed formula can be found in NERC Reliability
Standard BAL-001-0a
Page 4 of 13
ITEM 4A - COMPLIANCE REPORT
SEPTEMBER 14, 2009
July 2009 Resource Plan Performance Metrics for
Non-Wind Only QSEs
ID
Resource Plan Performance
Metric Scores
DK
DE
IP
AP
BY
BC
AY AM AR KC
BR
DF
CI
AD
BJ
KD KE
CF
ET
DA
DP
Resource Status
100 100 99 100 100 100 100 99 100 100 100 100 100 100 100 100 99 100 97 100 100
LSL HSL Percent
98
DA Zonal Schedule
AP Adjustment
100 100 ---
99 100 100 100 95
94
97
99
99 100 98 100 ---
95 100 100
94
100 100 100 97 100 100 94 100 100 99 100 100 100 100 100 100 100 99
---
98
100
100 100 100 98 100 100 98 100 100 99 100 100 100 100 100 99
---
98
100
93
98
Down Bid & Obligation
99
96 100 98
96
Total Up Ancillary Service
---
100 --- 100 97
96
99
99 100 98
98
90
96
99
99 100 99 100 90 100 ---
98
99
97
95
98
---
---
---
---
97
99 100 95
100
KB KA
IN
IZ
KG BX
CC CD AC
IO
99 100 100 99 100 100 99 100 100 99 100 100 100
99
98
97
ID
Resource Plan Performance
Metric Scores
BG
CQ
Resource Status
99
99 100 100 100 100 99
LSL HSL Percent
99
98 100 100 100 96 100 96
DA Zonal Schedule
98
100 100 100 100 100 100 100 99 100 100 100 99 100 100 100 100 98 100 100 100
AP Adjustment
99
98 100 100 100 99
Down Bid & Obligation
99
100 ---
---
Total Up Ancillary Service
100
99
98 100 98
KI
---
JV
JU
---
CX KH
FK HW JD
KF
97 100 91
98
96 100 100 96 100 94
96 100 100 100 99 100 98
98 100 100 99 100 96
---
97 100 100 97
Page 5 of 13
99 100 100
95 100 100 99
98 100 100
---
90
90
97
99
90
99
94 100 100
99
99
98
96
99
97
98
98 100 ---
100
ITEM 4A - COMPLIANCE REPORT
SEPTEMBER 14, 2009
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