1. May 2012 Generation Resource Energy and Regulation Deployment Performance
QMWG 6/8/2012

2. NON-IRR GREDP – Energy Deployments
Resources below 85% threshold
QSE Name
Resource Name
Fuel Type
Total Intervals Passed
Total Intervals Scored
Std Dev(GREDP MW)
GREDP Monthly Score
<QSE1>
<RESOURCE NAME>
SCLE90 46 58
5.73
79.31
<QSE2> 15 18
8.03
83.33

3. IRR GREDP Resources below 95% threshold Mar-12 Apr-12 May-12
< 10 Intervals 13 19 9
>=10<100 Intervals 16 4 7
>=100<500 Intervals
>=500 Intervals 10 11
Weighted Averaged GREDP *
92.8%
91.2%
91.9%
Weighted Average Deviation *
5.6MWs
5.4MWs
6.6MWs
Total Intervals
30,532
22,073
19,286
* Includes all WGRs (not just failures)

4. March IRR Failures QSE Name Resource Name Total Intervals Passed
Total Intervals Scored
Std Dev (ATG-Exp MW)
GREDP Monthly Score
<QSE NAME>
<RESOURCE NAME>
990
1,114
22.24
88.87
725
1,021
10.41
71.01
789
894
6.9
88.26
749
852
6.85
87.91
740
788
5.86
93.91
658
2.42
88.92
690
735
6.14
93.88
683
723
2.14
94.47
646
692
1.91
93.35
605
679
0.89
89.1
610
676
0.83
90.24
277
375
6.18
73.87
184
267
18.62
68.91 85
167
12.98
50.9
126
163
17.72
77.3 32 45
2.1
71.11

5. March IRR Failures (continued)
QSE Name
Resource Name
Total Intervals Passed
Total Intervals Scored
Std Dev (ATG-Exp MW)
GREDP Monthly Score
<QSE NAME>
<RESOURCE NAME> 33 40
4.57
82.5 28 31
3.33
90.32 14 23
6.01
60.87 17 20 8 85 18
7.16 90 9 12
8.92 75 2 7
1.8
28.57 3 4
15.54 1
7.84
33.33
1.16
6.04 50
6.94
2.41

6. GREDP Scenario Analysis
NON-IRRs
>= 85%
< 85%
% Passing
5 MW
257 65
79.81%
10 MW
300 12
96.15%
5 MW - 5%
312 10
96.89%
15 MW
321 1
99.69%
8MW - 8% (Current)
320 2
99.38%
Exclusions - No Freq Dev
319 3
99.07%
IRRs
>= 95%
< 95%
% Passing
10% - 1 MW when BP = 0 (Current) 24 31
43.64%
5 MW - 5% - low side - 95% 18 37
32.73%
8 MW - 8% - low side - 95% 21 34
38.18%
8 MW - 8% - low side - 85% 32 23
58.18%
Exclusions - No Freq Dev
41.82%

7. Manual HDL/LDL Override Summary
QMWG

8. Daily Summary Graph
For this analysis, we captured unique HDL/LDL overrides
An override is considered unique if that same Resource did not have an override within the last 10 minutes
There were 8 total unique overrides in May
As compared to 1 in April and 27 in March

9. Daily Summary Table Date Total Number of Overrides
Number of Resources with an Override
Number of Unique HDL/LDL Overrides
May 1, 2012 89 1 2
May 2, 2012
May 3, 2012
May 4, 2012
May 5, 2012
May 6, 2012
May 7, 2012
May 8, 2012
May 9, 2012
May 10, 2012
May 11, 2012
May 12, 2012
May 13, 2012
May 14, 2012
May 15, 2012
May 16, 2012 63 3
May 17, 2012
May 18, 2012
May 19, 2012
May 20, 2012
May 21, 2012
May 22, 2012
May 23, 2012
May 24, 2012
May 25, 2012
May 26, 2012
May 27, 2012
May 28, 2012
May 29, 2012
May 30, 2012
109
May 31, 2012

10. Reasons for Manual HDL/LDL Overrides
Outages required overrides as a result of local voltage issues
Also had voltage issues resulting from a severe storm
The following constraint had SCED executions counted towards irresolvability:
XMOS58 : ODNTH_FMR1
This constraint has not met the criteria for resetting the shadow price cap